WO2024172593A1 - Maxillary skeletal expander and manufacturing method therefor - Google Patents
Maxillary skeletal expander and manufacturing method therefor Download PDFInfo
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- WO2024172593A1 WO2024172593A1 PCT/KR2024/095294 KR2024095294W WO2024172593A1 WO 2024172593 A1 WO2024172593 A1 WO 2024172593A1 KR 2024095294 W KR2024095294 W KR 2024095294W WO 2024172593 A1 WO2024172593 A1 WO 2024172593A1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/10—Devices having means to apply outwardly directed force, e.g. expanders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
Definitions
- the present invention relates to a dental arch expansion device and a method for manufacturing the same.
- teeth and oral and maxillofacial areas are caused by teeth and oral and maxillofacial areas not growing properly in their proper place due to abnormal development of teeth or jawbones, bad habits affecting teeth, or heredity.
- the structure of teeth and oral cavity is a factor in determining a person's impression and can cause a decrease in the function of crushing food, so interest in orthodontic treatment is increasing day by day.
- the maxillary expansion device is a device used to treat patients whose maxilla is less developed than their mandible, and is a device that expands the maxilla to facilitate treatment.
- the bones of the face are like a puzzle, so it is easy to move the bones during the growth period, and the maxilla is not made of a single bone, but several bones interlocked. If the upper jaw is small to accommodate the permanent teeth, it is possible to widen the maxilla itself by spreading the bone area in the center of the roof of the mouth.
- a conventional arch expansion device which comprises: a pair of main bodies; an expansion screw for adjusting a gap between the pair of main bodies; a guide rail inserted on both sides into the pair of main bodies and for guiding the movement of the main bodies; a keyhole formed integrally with the expansion screw; a screw insertion portion which is a part of the main bodies and has a screw insertion hole for guiding the vertical implantation of a micro screw implanted in the upper jaw; an arm which has one end fixed to the main bodies and the other end extending toward a tooth; and a tooth fixing portion which is formed integrally with the arm and is fixed to a patient's teeth.
- the main body is fixed to the roof of the mouth through a screw in the upper jaw, and pressure is applied from the main body through an arm extending toward the teeth to expand the left and right width of the dental arch.
- the above-mentioned dental arch expander requires vertical installation through a screw in the roof of the mouth, so there is a problem of poor aesthetics when using the dental arch expander, and there is also a problem of inconvenience in that a procedure to install the dental arch expander is required.
- Patent Document 1 KR 10-2226747 B1
- the purpose of the present invention relates to a dental arch expansion device, and more specifically, to provide a dental arch expansion device that can be output through 3D printing and can be fitted to a patient's oral cavity.
- Another object of the present invention is to provide an arch expansion device that can be used on either the maxilla or the mandible and can be used without a separate fixation device such as a screw, thereby not requiring a separate surgical fixation.
- Another object of the present invention is to provide a dental arch expander that, when used, has less of a foreign body sensation and does not cause wounds inside the mouth compared to conventional dental arch expanders, thereby not causing pain caused by the dental arch expander.
- the present invention relates to a dental arch expansion device, which may include a fixing part positioned closely to the upper or lower jaw; and an expansion part coupled to the fixing part and formed to be in contact with the boundary between the teeth and the gums.
- the above-mentioned fixed portion is formed to correspond to the shape of the hard palate and soft palate of the maxilla, and is positioned in close contact with the hard palate and soft palate, and the above-mentioned expansion portion is formed to contact the boundary between the teeth and gums of the maxilla, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed portion, so that a force can be applied to expand the dental arch.
- the above-mentioned fixed part is positioned in close contact with the floor of the mouth under the tongue, and the above-mentioned expansion part is formed to contact the border between the teeth and gums of the lower jaw, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed part, so that force can be applied to expand the dental arch.
- the above extension part may additionally include a tooth orthodontic part for correcting teeth positioned inwardly of the oral cavity toward the outside.
- the above-mentioned arch expansion device is a 3D printing photocurable composition
- n is an integer from 1 to 100
- n 1 to 50
- A, B, C and D are identical or different from each other and are repeating units each independently selected from the group consisting of compounds represented by chemical formulas 2 to 6,
- a, b, c and d are the same or different from each other and are each independently an integer from 1 to 30,
- R 1 and R 2 are the same or different, and can each independently be selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms.
- a method for manufacturing a maxillary expansion device includes the steps of: obtaining a three-dimensional image of an oral cavity using a 3D scanner; using the image, forming a structure for a maxillary expansion device by simulating stepwise movement for maxillary expansion through a computer program; and transmitting the structure for the maxillary expansion device obtained by the simulation to a 3D printer to output the maxillary expansion device.
- the maxillary expansion device may include a fixing part closely positioned on the upper jaw or the lower jaw; and an extension part coupled to the fixing part and formed to be in contact with a boundary between teeth and gums.
- the above-mentioned fixed portion is formed to correspond to the shape of the hard palate and soft palate of the maxilla, and is positioned in close contact with the hard palate and soft palate, and the above-mentioned expansion portion is formed to contact the boundary between the teeth and gums of the maxilla, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed portion, so that a force can be applied to expand the dental arch.
- the above-mentioned fixed part is positioned in close contact with the floor of the mouth under the tongue, and the above-mentioned expansion part is formed to contact the border between the teeth and gums of the lower jaw, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed part, so that force can be applied to expand the dental arch.
- substitution means that a hydrogen atom bonded to a carbon atom of a compound is replaced with another substituent, and the position of substitution is not limited as long as it is a position where a hydrogen atom is substituted, that is, a position where a substituent can be substituted, and when two or more are substituted, the two or more substituents may be the same or different from each other.
- the above substituents are hydrogen, a cyano group, a nitro group, a halogen group, a hydroxy group, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkynyl group having 2 to 24 carbon atoms, a heteroalkyl group having 2 to 30 carbon atoms, an aralkyl group having 6 to 30 carbon atoms, an aryl group having 5 to 30 carbon atoms, a heteroaryl group having 2 to 30 carbon atoms, a heteroarylalkyl group having 3 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, an alkylamino group having 1 to 30 carbon atoms, an arylamino group having 6 to 30 carbon atoms, an aralkylamino group having 6 to 30 carbon atoms, a heteroarylamino group having 2 to 24 carbon atoms, a substituted or unsubstituted alkyls
- the present invention is a maxillary expansion device that can be output through 3D printing and can be adjusted to fit a patient's oral cavity. It can be used on either the upper or lower jaw, and can be used without a separate fixing device such as a screw, so separate surgical fixation is not required.
- FIG. 1 is a drawing of a bow expansion device according to one embodiment of the present invention.
- FIG. 2 is a drawing of a bow expansion device according to one embodiment of the present invention.
- FIG. 3 is a drawing of a conventional arch expansion device according to one embodiment of the present invention.
- FIG. 4 is a drawing of a conventional arch expansion device according to one embodiment of the present invention.
- Figure 5 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 6 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 7 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 8 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 9 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 10 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 11 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 12 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 13 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
- Figure 14 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
- FIG. 15 is a drawing of a bow expansion device according to one embodiment of the present invention.
- FIG. 16 is an exemplary drawing of the use of a bow expansion device according to one embodiment of the present invention.
- FIG. 17 is an exemplary drawing of the use of a bow expansion device according to one embodiment of the present invention.
- the present invention relates to a dental arch expansion device comprising a fixed part positioned closely to the upper or lower jaw; and an expansion part coupled to the fixed part and formed to contact the border between teeth and gums.
- the dental arch means an arch shape in the jaw that forms a horseshoe-shaped arch when viewed from the occlusal plane when the teeth are arranged.
- expansion of the dental arch means expanding the dental arch by adjusting the angle of the teeth or expanding the bone of the basal bone to the left and right.
- arch expansion treatment In orthodontic treatment, the purpose of arch expansion treatment varies depending on age. In children and adolescents, arch expansion can be used to improve the skeleton and malocclusion, and in adults, arch expansion treatment can be used to restore dental function and improve appearance due to malocclusion.
- the dental arch can be expanded using a wire.
- the dental arch expander is a device that expands a narrow dental arch, and can be used mainly in the upper jaw. In addition, it does not only spread the teeth, but also classifies the bones of the dental arch.
- Conventional dental arch expansion devices not only use wires as shown in Fig. 3, but also have a part that is fixed to the roof of the mouth using a screw as shown in Fig. 4, and a form that has an arm for applying force from the screw to the teeth.
- the dental arch expander In the case of the dental arch expander that uses only wires as described above or fixes the main body to the roof of the mouth with screws, it can sufficiently exert force to expand the dental arch, but in some cases, excessive force may be applied to the roof of the mouth, causing injury, and in cases where the tongue must touch the roof of the mouth when swallowing saliva or speaking, excessive foreign body sensation may occur, causing great discomfort to the patient.
- the present invention is characterized in that it can be used without a separate fixing device, such as a screw, unlike a conventional arch expansion device, so that a separate surgical fixation is not required, and it is a jaw expansion device that can be adjusted to the patient's oral cavity, and can be used on either the upper or lower jaw.
- it may include a fixed portion positioned closely to the upper or lower jaw; and an extension portion joined to the fixed portion and formed to contact the border between the teeth and gums.
- a conventional dental arch expansion device can be attached to a tooth by connecting a wire to the device, and can also exhibit a force to expand the dental arch.
- a method was used in which the main body was fixed to the upper jaw using a screw.
- the fixing member (200) is printed to correspond to the shape of the upper jaw's hard palate and soft palate, so that it can be completely sealed when used.
- the upper jaw is usually in a concave shape with a groove formed inside in an arch shape. Accordingly, the fixing member (200) printed using a 3D printer can also have a shape corresponding to this.
- the above-mentioned fixed part (200) prevents the dental arch expansion device of the present invention from easily falling off when used together with the expansion part (300), and unlike conventional dental arch expansion devices, it has a shape corresponding to the roof of the mouth, thereby reducing the feeling of a foreign body.
- extension part (300) is formed to be in contact with the border of the teeth and gums, and is used by being combined in a form that closely adheres to the patient's gums.
- the dental arch expansion device (100) of the present invention captures the oral condition of a patient as a video image using a 3D scanner, and when the shape of the dental arch expansion device is derived step by step through a computer program, it can be output in a form appropriate for the step.
- the output arch expansion device (100) is output in a shape corresponding to the shape of the arch that is expanded more than the current patient's arch.
- the dental arch expansion device (100) output in the form of a patient's stepwise expanded dental arch may not be easily attached when combined with the patient's upper jaw.
- the dental arch expansion device (100) of the present invention is in a state of complete adhesion to the patient's upper or lower jaw, and specifically, is combined in such a way that it is in adhesion up to the boundary line between the teeth and gums.
- the dental arch expansion device (100) As the dental arch expansion device (100) is output in a form larger than the patient's current dental arch in the adhesion state, the dental arch can be expanded by a force that tends to spread outward based on the center point of the dental arch expansion device (100) of the present invention.
- FIG. 2 is an example of a dental arch expansion device (100) according to one embodiment of the present invention that can be used on the lower jaw.
- the lower jaw is used for the area under the tongue, and the shape of the arch expander (100) and the fixing part (200, 200') used for the upper jaw are different.
- the fixing part (200') of the present invention Since there are parts under the tongue, such as the lingual frenulum and the sublingual gland, where the fixing part (200') of the present invention cannot be positioned, the fixing part (200') is positioned in a part other than the relevant part.
- the expansion part (300') is formed to contact the boundary between the teeth and gums of the lower jaw, similar to the arch expansion device (100) used for the upper jaw, and is symmetrical in the left and right directions based on the center of the fixing part, so that force can be applied to expand the arch.
- the dental arch expansion device (100) of the present invention may additionally include an orthodontic unit (not shown).
- the orthodontic unit (not shown) may be extended and joined to the expansion unit in order to correct teeth positioned inwardly of the oral cavity toward the outside.
- the extension (300, 300') of the present invention is formed to contact the boundary between the teeth and gums, and the force applied to the upper or lower jaw by the extension (300, 300') is allowed to reach only the boundary between the teeth and gums.
- the dental arch expansion device (100) of the present invention is intended to expand the dental arch, and only the effect of expanding the upper or lower jaw is intended to be exerted, so that the teeth should not be tilted by the dental arch expansion device (100) of the present invention.
- the dental arch expansion device (100) of the present invention can be formed so that the expansion part (300, 300') comes into contact with the boundary between the teeth and gums.
- teeth are divided into the crown, cervical region, and root.
- the crown is the visible upper part of the tooth
- the root is the root of the tooth
- the cervical region refers to the boundary between the tooth and the gums as described above.
- the center of the tooth corresponds to the cervical region.
- the jaw expansion effect is exhibited by the jaw expansion device (100), and the tooth tilting phenomenon can be prevented.
- some teeth may be positioned on the inside of the teeth or tilted toward the inside of the mouth.
- a dental arch expander was used to first widen the space between teeth, and then an orthodontic device was used to adjust the positions of the teeth so that they were evenly spaced.
- the dental arch expansion device (100) of the present invention converts the patient's oral condition into image data using a 3D scanner, and outputs this to the dental arch expansion device (100) step by step through a computer program.
- an orthodontic part (not shown) is formed in succession to the expansion part (300, 300'), so that the dental arch expansion and tooth orthodontic effects can be achieved simultaneously.
- the dental arch expansion device (100) must be positioned closely to the patient's maxilla or mandible and must be able to exert an expanding force. In order to function in this manner, it must be able to be completely adhered to the patient's maxilla or mandible.
- the present invention is characterized by printing an arch expansion device (100) using a 3D printer using a shape memory polymer.
- the above-mentioned dental arch expansion device (100) can be made flexible and transformed into a shape that fits the patient's upper or lower jaw by soaking it in water above 40°C before use.
- hard plastic materials used to manufacture transparent orthodontic devices can exert sufficient force to expand the arch when used as arch expanders, but have the problem of making it difficult to completely adhere to the patient's upper or lower jaw for use. That is, in a state where the arch expander is manufactured in a shape that fits a stepwise expanded form, in order to be attached to the patient's upper or lower jaw that has not yet been expanded, it must be used by bending it, but if force is applied to bend it, it may break, and even if it is fitted in a bent state, it is impossible to use it in a completely adhered state.
- the dental arch expansion device (100) of the present invention is printed using a photocurable polymer composition for a 3D printer, which will be described later.
- a photocurable polymer composition for a 3D printer which will be described later.
- the above-described dental arch expansion device (100) of the present invention When the above-described dental arch expansion device (100) of the present invention is used on a patient, it is immersed in water of 40°C or higher. At this time, it is deformed into a shape that fits the patient's dental arch, but is gradually restored to its original shape by body temperature. At this time, a force is generated on the upper or lower jaw by the restoring force, so that the dental arch can be expanded.
- the photocurable polymer composition for a 3D printer may include a photocurable oligomer for 3D printing represented by the following chemical formula 1; a monomer; a photoinitiator; and a stabilizer:
- n is an integer from 1 to 100
- n 1 to 50
- A, B, C and D are identical or different from each other and are repeating units each independently selected from the group consisting of compounds represented by chemical formulas 2 to 6,
- a, b, c and d are the same or different from each other and are each independently an integer from 1 to 30,
- R 1 and R 2 are the same or different, and can each independently be selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms.
- the above photocurable oligomer is characterized by including a urethane acrylate structure as a main chain, a photocurable functional group bonded to the urethane structure, and including a soft functional group and a hard functional group in the compound.
- the output exhibits flexible properties due to the soft functional group included in the photocurable composition, and can also exhibit heat resistance due to the hard functional group.
- a flexible effect can be exhibited by utilizing a carbon skeleton having soft properties at room temperature, and heat-resistant properties can also be exhibited by utilizing a carbon skeleton having hard properties at room temperature.
- the above photocurable oligomer contains a carbon skeleton having hard properties, it can produce a 3D printing output product having excellent physical properties such as thermal properties, strength, elastic modulus, and tensile elongation, and can be restored to its original shape by heat.
- the photocurable oligomer contains a carbon skeleton with soft properties, its shape can be deformed by an external force after heat is provided.
- a composition for a 3D printer may include, as described below, a photocurable oligomer for 3D printing; a monomer; a photoinitiator; and a stabilizer.
- the oligomer, monomer, photoinitiator, and stabilizer included in the composition all affect the physical properties of the output, but the oligomer has the greatest effect. Accordingly, in general, in order to improve the physical properties of the 3D output, only a carbon skeleton having a hard property is included, which can improve the physical properties of the output, but conversely, if the shape is deformed due to use, the shape cannot be restored, which causes a problem in that it cannot be used multiple times.
- the composition for a 3D printer of the present invention includes a carbon skeleton having a hard property and a carbon skeleton having a soft property, not only is it excellent in physical properties such as thermal properties, strength, elastic modulus, and tensile elongation, but also can utilize the flexible property of the soft functional group, so that when the shape is deformed by an external force in a state where heat is provided, the deformed shape can be fixed, and when heat is provided again, the original shape can be restored.
- A, B and D are the same as or different from each other, and can be repeating units each independently selected from compounds represented by chemical formula 2 or 3.
- the above C may be a repeating unit selected from the group consisting of compounds represented by chemical formulas 4 to 6.
- the photocurable oligomer represented by the above chemical formula 1 can be manufactured by a method for synthesizing a urethane acrylate series. Basically, it proceeds by a stepwise polymerization reaction of a diol and a diisocyanate, and in order to prevent gelation of the material due to an increase in molecular weight during the polymerization process of the material, an acrylic monomer having no reaction site is used as a suspension.
- the monomer used in the synthesis of the oligomer of the present invention as an available acrylic monomer may be Isobornyl acrylate, Cyclic Trimethylolpropane Formal Acrylate, Lauryl acrylate, Lauryl methacrylate, 3,5,3-trimethelhexyl acrylate, Tetrahydrofurfuryl acrylate, Tetrahydrofurfuryl methacrylate, Benzyl methacrylate, etc.
- diol was pre-introduced into the monomer base used primarily as a monomer to stabilize it, and then diisocyanate was introduced.
- reaction heat was generated, the urethane chain became longer, and the molecular weight increased.
- the viscosity of the material may also increase. If the above-mentioned molecular weight increase proceeds rapidly, the temperature rises rapidly, which also causes the urethane reaction to proceed more quickly, and as a result, the oligomer is gelled before reaching a sufficient molecular weight, making it impossible to use as a material.
- a solvent for introducing a diol is selected from the group consisting of Isobornyl acrylate, Cyclic Trimethylolpropane Formal Acrylate, Lauryl acrylate, Lauryl methacrylate, 3,5,3-trimethelhexyl acrylate, Tetrahydrofurfuryl acrylate, Tetrahydrofurfuryl methacrylate, Benzyl methacrylate, and mixtures thereof.
- the solvent does not participate in the reaction, and is used to control the reaction speed of the material and prevent a rapid increase in viscosity due to an increase in molecular weight.
- the monomers for synthesizing the oligomer of the present invention must not have a functional group capable of reactive urethane reaction, such as a hydroxyl group or a urethane group.
- the equivalent ratio of diol and diisocyanate was set to a state where the equivalent of diisocyanate was higher than that of diol, so that the oligomer terminal existed as an isocyanate group.
- a reaction catalyst including a Zn-based catalyst can be used during the reaction process.
- the catalyst may or may not be included.
- the catalyst is included to make the reaction proceed more quickly, and the reaction can proceed even if it is not necessarily included, but even if it is included, the reaction can proceed with a very small amount added.
- the diols used for the production of the above oligomers are as follows:
- diisocyanate for reacting with the above diol is as follows:
- monomers that may be included to terminate the urethane reaction or increase the molecular weight are as follows:
- the compound represented by the chemical formula 1 manufactured by the above manufacturing method can be selected from the group consisting of the following compounds:
- the photocurable oligomer may have a number average molecular weight (Mn) of 1,500 to 6,000, 1,500 to 5,500, or 1,600 to 5,000.
- the photocurable oligomer may have a weight average molecular weight (Mw) of 2,500 to 9,000, 3,000 to 8,500, or 3,500 to 8,000.
- an oligomer having a number average molecular weight and a weight average molecular weight is used to manufacture a photocurable composition for 3D printing, which will be described later, and by using the same, a dental arch expansion device customized to a patient's oral structure can be printed, and by using the same, the convenience of use for the patient can be improved and the dental arch expansion effect can be enhanced.
- the dental arch expansion device of the present invention is immersed in water at 50 to 100°C and then deformed, the shape changes to the deformed form, but when it is used while being fitted to the upper or lower jaw, the dental arch expansion device, whose shape has been changed by body temperature, gradually returns to its original shape, so that the dental arch expansion effect can be exhibited.
- the composition can exhibit characteristics as a shape memory polymer and can be provided as a patient-specific maxillofacial expansion device.
- the above photocurable oligomer may have a viscosity of 2,000 psi to 3,500 psi, 2,100 psi to 3,200 psi, or 2,200 psi to 3,000 psi.
- a photocurable composition is manufactured using an oligomer having a viscosity in the above range, it can be provided with a viscosity suitable for use in a 3D printer.
- the photoinitiator may be BP, TPO, DCP, BPO, DPPO, etc., and preferably DPPO (2-hydroxy-2-methylpropiophenone), but is not limited to the above examples, and any photoinitiator capable of producing a photocurable composition may be used without limitation.
- the above stabilizer may be selected from the group consisting of tertiary amines such as diethylethanolamine and trihexylamine, hindered amines, organic phosphates, and hindered phenols, but is not limited to the above examples, and any stabilizer capable of producing a photocurable composition may be used without limitation.
- the above additives may include conventional additives such as leveling agents, slip agents or stabilizers to improve thermal and oxidation stability, storage stability, surface properties, flow properties and process properties.
- a photocurable composition according to one embodiment of the present invention may contain 1 part by weight of a photoinitiator per 100 parts by weight of a UV resin.
- the UV resin includes a photocurable oligomer of the present invention; and a monomer, and more specifically, may contain a compound represented by the following chemical formula 1, a compound represented by the following chemical formula 7, and a compound represented by the following chemical formula 8 in a weight ratio of 1:1:1 to 2:1:1.
- a method for manufacturing a maxillary expansion device includes the steps of: obtaining a three-dimensional image of an oral cavity using a 3D scanner; using the image, forming a structure for a maxillary expansion device by simulating stepwise movement for maxillary expansion through a computer program; and transmitting the structure for the maxillary expansion device obtained by the simulation to a 3D printer to output the maxillary expansion device.
- the maxillary expansion device may include a fixing part closely positioned on the upper jaw or the lower jaw; and an extension part coupled to the fixing part and formed to be in contact with a boundary between teeth and gums.
- the above computer program uses a commercially available program, provides the degree of expansion of the arch in stages, and can derive the structure of a corresponding arch expansion device.
- the structural information for the above-described arch expansion device can be transmitted to a 3D printer, and the arch expansion device of the present invention can be printed using the same.
- the arch expansion device according to one embodiment of the present invention may be output in a shape as shown in Fig. 15.
- Fig. 15 illustrates one embodiment of the arch expansion device of the present invention, and is for use in the upper jaw.
- the above-mentioned dental arch expansion device can exhibit the effect of expanding the dental arch in stages by utilizing the characteristics of shape memory polymers.
- the dental arch expansion device of the present invention can be used together with a transparent orthodontic device. As shown in Fig. 17, by using the transparent orthodontic device together, the shape of the teeth can be prevented from being deformed during the dental arch expansion process through the transparent orthodontic device, and teeth can be corrected simultaneously with the dental arch expansion.
- the use in the usage state as shown in the above Fig. 17 is possible because the dental arch expansion device of the present invention obtains information about the patient's oral cavity using a 3D scanner and is custom-made using a 3D printer.
- Isobornyl acrylate was used as a solvent, and polypropylene glycol, cyclohexanedimethanol, and BHT were added, stirred at 10 to 200 rpm at 10 to 50°C, then isophorone diisocyanate was added and stirred at a stirring speed of 50 to 200 rpm under the same temperature conditions. After that, HEMA was added, stirred at 150 to 500 rpm at 50 to 250°C to produce an oligomer.
- the GPC analysis results for the oligomer of the above Manufacturing Example 1 are as shown in Fig. 5.
- the NMR analysis results are as shown in Fig. 6.
- An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction.
- the prepared oligomer is as follows:
- the GPC analysis results for the oligomer of the above Manufacturing Example 2 are as shown in Fig. 7.
- the NMR analysis results are as shown in Fig. 8.
- An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction.
- the prepared oligomer is as follows:
- the GPC analysis results for the oligomer of the above Manufacturing Example 3 are as shown in Fig. 9.
- the NMR analysis results are as shown in Fig. 10.
- An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction.
- the prepared oligomer is as follows:
- the GPC analysis results for the oligomer of the above Manufacturing Example 4 are as shown in Fig. 11.
- the NMR analysis results are as shown in Fig. 12.
- An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction.
- the prepared oligomer is as follows:
- the GPC analysis results for the oligomer of the above Manufacturing Example 5 are as shown in Fig. 13.
- the NMR analysis results are as shown in Fig. 14.
- the viscosity of the oligomers of the above manufacturing examples 1 to 5 was measured, and the mechanical properties were measured after 3D printing.
- the oligomers of the above Preparation Examples 1 to 5 were mixed in a weight ratio of 1:1:1, and 1 part by weight of DPPO was mixed with 100 parts by weight of the mixture to prepare a polymer composition, which was then placed in a 3D printer to prepare a specimen:
- the flexural strength was tested according to ISO 20795-2 and ISO 10477 standards, and the tensile strength was tested according to ASTM D638.
- Manufacturing example 1 Manufacturing example 2 Manufacturing example 3 Manufacturing example 4 Manufacturing example 5 Batch Size 50L 50L 50L 50L Blending and 3D Printing Output After mechanical properties Flexural strength (20795-2 Psalm, MPa) 171 162 155 163 150 Flexural elasticity (20795-2 Psalm, MPa) 3939 3807 3800 3655 3594 Flexural strength (10477 specimens, MPa) 146 122 162 158 143 Tensile strength (D 638, MPa) 109 102 115 113 108 Elongation (D 638, %) 3.9 3.0 7.6 6.5 7.7 Viscosity (psi) 2880 2950 2220 2380 2380
- the flexural strength must be 150 MPa or more and the tensile strength must be 110 MPa or more, so the photocurable composition using the oligomer of Manufacturing Examples 3 and 4 can be used as an arch expansion device, while in the case of other Manufacturing Examples, the arch expansion effect due to shape deformation may be insufficient when used as an arch expansion device.
- a polymer composition prepared by mixing the oligomer, monomer, and photoinitiator of Experimental Example 1 was placed in a 3D printer and printed using a filament expansion device.
- the experimental method involved immersing the sample in water at 50 to 100°C, applying an external force to deform the shape, and checking whether the deformed shape was fixed, and whether the sample was restored to its original shape under conditions of 20 to 30°C after being immersed in water at a temperature of 40 to 80°C again.
- the shape is deformed by an external force after being immersed in water at 40 to 80°C for the first time and the deformed shape is fixed, and then the shape is restored to the original shape at 20 to 30°C after being immersed in water at 50 to 100°C again, it is marked as O.
- Manufacturing example 1 Manufacturing example 2 Manufacturing example 3 Manufacturing example 4 Manufacturing example 5 Shape memory properties O O O O O O
- a maxillary expansion device when fitted into a patient's maxilla or mandible, it can be used in a flexible state by putting it in warm water, so that the patient can fit it completely into the maxilla or mandible without feeling much pain.
- the shape is gradually transformed into the original shape by body temperature, and the original shape corresponds to the state of the maxilla or mandible that has been gradually expanded by the computer program as described above, and a pressing force is applied to exert the maxillary expansion effect.
- the present invention relates to a dental arch expansion device and a method for manufacturing the same.
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Abstract
The present invention relates to a maxillary skeletal expander and a manufacturing method therefor. The maxillary skeletal expander is printed through 3D printing, can fit the oral cavity of a patient and be used on both the upper jaw and the lower jaw, and does not require a separate fixing device such as a screw, and thus does not require a separate fixing procedure. In addition, compared to conventional maxillary skeletal expanders, the maxillary skeletal expander generates less of a foreign body sensation during use and does not cause injuries in the oral cavity, and thus does not cause pain.
Description
본 발명은 악궁 확장 장치 및 이의 제조 방법에 관한 것이다.The present invention relates to a dental arch expansion device and a method for manufacturing the same.
일반적으로 불균일한 치열, 부정교합 및 안면돌출은 치아나 턱뼈의 발육이상, 치아에 영향을 미치는 나쁜 습관 또는 유전 등으로 인해 치아 및 구강악 안면부위가 제자리에서 바르게 자라지 못하여 발생된다. 치열 및 구강의 구조는 사람의 인상을 결정하는 요인으로 작용하며, 음식물의 분쇄기능을 저하시키는 원인이 되므로 치아 교정에 대한 관심은 날로 증가하고 있다.In general, uneven teeth, malocclusion, and facial protrusion are caused by teeth and oral and maxillofacial areas not growing properly in their proper place due to abnormal development of teeth or jawbones, bad habits affecting teeth, or heredity. The structure of teeth and oral cavity is a factor in determining a person's impression and can cause a decrease in the function of crushing food, so interest in orthodontic treatment is increasing day by day.
다만, 아래 위 치아의 맞물림에 대한 이상이나 안면의 골격구조에 대한 이상이 너무 심한 경우에는 교정 장치에 의한 교정이 불가능하며, 악궁 확장 장치와 같은 치열교정치료가 요구된다.However, if the abnormality in the occlusion of the upper and lower teeth or the abnormality in the facial bone structure is too severe, correction using orthodontic devices is not possible and orthodontic treatment such as arch expansion devices is required.
악궁 확장 장치는, 상악이 하악에 비해 덜 발달한 환자의 치료에 이용되는 장치로, 상악을 확장시켜 치료를 용이하게 하기 위한 장치이다. 얼굴의 뼈는 퍼즐처럼 되어있어 성장기 중에는 뼈를 움직이기가 쉬우며, 상악 역시 하나의 뼈로 구성되지 않으며 여러 개의 뼈가 맞물려 있다. 위턱이 영구치를 수용하기에 크기가 작은 경우 입 천정 중앙에 있는 뼈 부위를 벌려줌으로써 악궁 자체를 넓혀주는 것이 가능하다.The maxillary expansion device is a device used to treat patients whose maxilla is less developed than their mandible, and is a device that expands the maxilla to facilitate treatment. The bones of the face are like a puzzle, so it is easy to move the bones during the growth period, and the maxilla is not made of a single bone, but several bones interlocked. If the upper jaw is small to accommodate the permanent teeth, it is possible to widen the maxilla itself by spreading the bone area in the center of the roof of the mouth.
관련하여, 종래 악궁 확장 장치는 한 쌍의 본 체; 한 쌍의 본체 사이의 간격을 조절하는 확장 스크류; 한 쌍의 본체에 양 측이 삽입되며, 본체의 움직임을 안내하기 위한 가이드 레일; 확장 스크류와 일체로 형성되는 키홀; 본체의 일부이며, 상악에 식립되는 마이크로 스크류의 수직 식립을 안내하는 스크류 삽입홀을 구비하는 스크류 삽입부; 일단은 본체에 고정되며, 타단은 치아를 향해 뻗어있는 암; 및 암과 일체로 형성되며 환자의 치아에 고정되는 치아 고정부;로 구성된 악궁 확장장치가 개시되어 있다.In relation to this, a conventional arch expansion device is disclosed, which comprises: a pair of main bodies; an expansion screw for adjusting a gap between the pair of main bodies; a guide rail inserted on both sides into the pair of main bodies and for guiding the movement of the main bodies; a keyhole formed integrally with the expansion screw; a screw insertion portion which is a part of the main bodies and has a screw insertion hole for guiding the vertical implantation of a micro screw implanted in the upper jaw; an arm which has one end fixed to the main bodies and the other end extending toward a tooth; and a tooth fixing portion which is formed integrally with the arm and is fixed to a patient's teeth.
상기와 같이, 악궁을 확장하기 위해, 상악에 스크류를 통해, 본체를 입 천정에 고정시키고, 상기 본체로부터, 치아 쪽으로 뻗어 있는 암을 통해 가압하여 악궁의 좌우폭을 확장시키는 것이다. As described above, in order to expand the dental arch, the main body is fixed to the roof of the mouth through a screw in the upper jaw, and pressure is applied from the main body through an arm extending toward the teeth to expand the left and right width of the dental arch.
상기 악궁 확장 장치는 입 천정에 스크류를 통해, 수직 식립이 필요하여 악궁 확장 장치를 이용하는 경우, 심미성이 떨어지는 문제가 있으며, 악궁 확장 장치를 설치하는 시술이 필요한 점에서 번거로운 문제가 있다.The above-mentioned dental arch expander requires vertical installation through a screw in the roof of the mouth, so there is a problem of poor aesthetics when using the dental arch expander, and there is also a problem of inconvenience in that a procedure to install the dental arch expander is required.
또한, 상기 악궁 확장 장치는 상악에는 사용이 가능하나 하악에는 사용이 불가한 문제가 있다. In addition, there is a problem that the above-mentioned dental arch expansion device can be used on the upper jaw but not on the lower jaw.
이에, 심미성을 높이고, 번거로운 시술이 불필요하며, 상악 뿐 아니라 하악에도 악궁 확장이 가능한 악궁 확장 장치의 개발이 필요하다. Accordingly, there is a need to develop an arch expansion device that improves aesthetics, does not require cumbersome procedures, and can expand the arch of the upper and lower jaws.
[선행기술문헌][Prior art literature]
[특허문헌][Patent Document]
(특허 문헌 1) KR 10-2226747 B1(Patent Document 1) KR 10-2226747 B1
본 발명의 목적은 악궁 확장 장치에 관한 것으로, 구체적으로 3D 프린팅을 통해 출력하여, 환자의 구강에 맞출 수 있는 악궁 확장 장치를 제공하는 것이다. The purpose of the present invention relates to a dental arch expansion device, and more specifically, to provide a dental arch expansion device that can be output through 3D printing and can be fitted to a patient's oral cavity.
본 발명의 다른 목적은 상악 또는 하악에 모두 사용할 수 있으며, 스크류와 같은 별도의 고정 장치가 없이도 사용할 수 있어 별도의 시술 고정이 필요하지 않은 악궁 확장 장치를 제공하는 것이다. Another object of the present invention is to provide an arch expansion device that can be used on either the maxilla or the mandible and can be used without a separate fixation device such as a screw, thereby not requiring a separate surgical fixation.
본 발명의 다른 목적은 악궁 확장 장치를 사용 시에도 종래 악궁 확장 장치에 비해, 이물감이 적고, 구강 내 상처가 발생하지 않아 악궁 확장 장치에 의한 통증의 발생을 유발하지 않는 악궁 확장 장치를 제공하는 것이다.Another object of the present invention is to provide a dental arch expander that, when used, has less of a foreign body sensation and does not cause wounds inside the mouth compared to conventional dental arch expanders, thereby not causing pain caused by the dental arch expander.
상기 목적을 달성하기 위하여, 본 발명은 악궁 확장 장치에 관한 것으로, 상악 또는 하악에 밀접하게 위치하는 고정부; 및 상기 고정부에 결합되며, 치아와 잇몸의 경계에 접하도록 형성되는 확장부를 포함할 수 있다. To achieve the above object, the present invention relates to a dental arch expansion device, which may include a fixing part positioned closely to the upper or lower jaw; and an expansion part coupled to the fixing part and formed to be in contact with the boundary between the teeth and the gums.
상기 고정부는 상악의 경구개 및 연구개의 형상과 대응되도록 형성되어, 상기 경구대 및 연구개에 밀착하여 위치하며, 상기 확장부는 상악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해질 수 있다. The above-mentioned fixed portion is formed to correspond to the shape of the hard palate and soft palate of the maxilla, and is positioned in close contact with the hard palate and soft palate, and the above-mentioned expansion portion is formed to contact the boundary between the teeth and gums of the maxilla, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed portion, so that a force can be applied to expand the dental arch.
상기 고정부는 혀 아래의 구강 바닥에 밀착하여 위치하며, 상기 확장부는 하악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해질 수 있다. The above-mentioned fixed part is positioned in close contact with the floor of the mouth under the tongue, and the above-mentioned expansion part is formed to contact the border between the teeth and gums of the lower jaw, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed part, so that force can be applied to expand the dental arch.
상기 확장부는 구강 내측으로 위치한 치아를 외측으로 교정하기 위한 치아 교정부를 추가로 포함할 수 있다. The above extension part may additionally include a tooth orthodontic part for correcting teeth positioned inwardly of the oral cavity toward the outside.
상기 악궁 확장 장치는 하기 화학식 1로 표시되는 3D 프린팅용 광경화형 올리고머; 모노머; 광개시제; 및 안정제를 포함하는 3D 프린팅용 광경화형 조성물로, 3D 프린터를 이용하여 출력될 수 있다:The above-mentioned arch expansion device is a 3D printing photocurable composition comprising a 3D printing photocurable oligomer represented by the following chemical formula 1; a monomer; a photoinitiator; and a stabilizer, and can be printed using a 3D printer:
[화학식 1][Chemical Formula 1]
[규칙 제91조에 의한 정정 08.03.2024]
[Correction under Rule 91 08.03.2024]
[화학식 2][Chemical formula 2]
[화학식 3][Chemical Formula 3]
[화학식 4][Chemical Formula 4]
[화학식 5][Chemical Formula 5]
[화학식 6][Chemical formula 6]
여기서, Here,
n은 1 내지 100의 정수이며, n is an integer from 1 to 100,
m은 1 내지 50의 정수이며, m is an integer from 1 to 50,
A, B, C 및 D는 서로 동일하거나 상이하며, 각각 독립적으로 화학식 2 내지 6으로 표시되는 화합물로 이루어진 군으로부터 선택되는 반복단위이며, A, B, C and D are identical or different from each other and are repeating units each independently selected from the group consisting of compounds represented by chemical formulas 2 to 6,
a, b, c 및 d는 서로 동일하거나 상이하며, 각각 독립적으로 1 내지 30의 정수이며, a, b, c and d are the same or different from each other and are each independently an integer from 1 to 30,
R1 및 R2는 서로 동일하거나 상이하며, 각각 독립적으로 수소, 중수소, 치환 또는 비치환된 탄소수 1 내지 30의 알킬기, 치환 또는 비치환된 탄소수 2 내지 30의 알케닐기, 치환 또는 비치환된 탄소수 2 내지 30의 알키닐기, 치환 또는 비치환된 탄소수 6 내지 30의 아릴기 및 치환 또는 비치환된 탄소수 1 내지 30의 헤테로아릴기로 이루어진 군으로부터 선택될 수 있다.R 1 and R 2 are the same or different, and can each independently be selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms.
본 발명의 다른 일 실시예에 따른 악궁 확장 장치의 제조 방법은 3D 스캐너를 이용하여 구강에 대한 3차원 영상을 확보하는 단계; 상기 영상을 이용하여 컴퓨터 프로그램을 통해, 악궁 확장에 대한 단계적인 이동을 위한 시뮬레이션 하여 단계별 악궁 확장 장치에 대한 구조를 형성하는 단계; 및 상기 시뮬레이션에 의해 확보된 단계별 악궁 확장 장치에 대한 구조를 3D 프린터로 전송하여 악궁 확장 장치를 출력하는 단계를 포함하며, 상기 악궁 확장 장치는 상악 또는 하악에 밀접하게 위치하는 고정부; 및 상기 고정부에 결합되며, 치아와 잇몸의 경계에 접하도록 형성되는 확장부를 포함할 수 있다. According to another embodiment of the present invention, a method for manufacturing a maxillary expansion device includes the steps of: obtaining a three-dimensional image of an oral cavity using a 3D scanner; using the image, forming a structure for a maxillary expansion device by simulating stepwise movement for maxillary expansion through a computer program; and transmitting the structure for the maxillary expansion device obtained by the simulation to a 3D printer to output the maxillary expansion device. The maxillary expansion device may include a fixing part closely positioned on the upper jaw or the lower jaw; and an extension part coupled to the fixing part and formed to be in contact with a boundary between teeth and gums.
상기 고정부는 상악의 경구개 및 연구개의 형상과 대응되도록 형성되어, 상기 경구대 및 연구개에 밀착하여 위치하며, 상기 확장부는 상악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해질 수 있다. The above-mentioned fixed portion is formed to correspond to the shape of the hard palate and soft palate of the maxilla, and is positioned in close contact with the hard palate and soft palate, and the above-mentioned expansion portion is formed to contact the boundary between the teeth and gums of the maxilla, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed portion, so that a force can be applied to expand the dental arch.
상기 고정부는 혀 아래의 구강 바닥에 밀착하여 위치하며, 상기 확장부는 하악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해질 수 있다.The above-mentioned fixed part is positioned in close contact with the floor of the mouth under the tongue, and the above-mentioned expansion part is formed to contact the border between the teeth and gums of the lower jaw, and is symmetrical in the left and right directions based on the center of the above-mentioned fixed part, so that force can be applied to expand the dental arch.
본 발명에서 "치환"은 화합물의 탄소 원자에 결합된 수소 원자가 다른 치환기로 바뀌는 것을 의미하며, 치환되는 위치는 수소 원자가 치환되는 위치 즉, 치환기가 치환 가능한 위치라면 한정하지 않으며, 2 이상 치환되는 경우, 2 이상의 치환기는 서로 동일하거나 상이할 수 있다. 상기 치환기는 수소, 시아노기, 니트로기, 할로겐기, 히드록시기, 탄소수 1 내지 30의 알킬기, 탄소수 2 내지 30의 알케닐기, 탄소수 2 내지 24의 알키닐기, 탄소수 2 내지 30의 헤테로알킬기, 탄소수 6 내지 30의 아르알킬기, 탄소수 5 내지 30의 아릴기, 탄소수 2 내지 30의 헤테로아릴기, 탄소수 3 내지 30의 헤테로아릴알킬기, 탄소수 1 내지 30의 알콕시기, 탄소수 1 내지 30의 알킬아미노기, 탄소수 6 내지 30의 아릴아미노기, 탄소수 6 내지 30의 아르알킬아미노기, 탄소수 2 내지 24의 헤테로 아릴아미노기, 치환 또는 비치환의 탄소수 1 내지 30의 알킬실릴기, 치환 또는 비치환의 탄소수 6 내지 30의 아릴실릴기 및 치환 또는 비치환의 탄소수 6 내지 30의 아릴옥시기로 이루어진 군으로부터 선택되는 하나 이상의 치환기로 치환될 수 있으나, 상기 예시에 국한되지 않는다.In the present invention, "substitution" means that a hydrogen atom bonded to a carbon atom of a compound is replaced with another substituent, and the position of substitution is not limited as long as it is a position where a hydrogen atom is substituted, that is, a position where a substituent can be substituted, and when two or more are substituted, the two or more substituents may be the same or different from each other. The above substituents are hydrogen, a cyano group, a nitro group, a halogen group, a hydroxy group, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkynyl group having 2 to 24 carbon atoms, a heteroalkyl group having 2 to 30 carbon atoms, an aralkyl group having 6 to 30 carbon atoms, an aryl group having 5 to 30 carbon atoms, a heteroaryl group having 2 to 30 carbon atoms, a heteroarylalkyl group having 3 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, an alkylamino group having 1 to 30 carbon atoms, an arylamino group having 6 to 30 carbon atoms, an aralkylamino group having 6 to 30 carbon atoms, a heteroarylamino group having 2 to 24 carbon atoms, a substituted or unsubstituted alkylsilyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms. It may be substituted with one or more substituents selected from the group consisting of an arylsilyl group having 30 carbon atoms and a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, but is not limited to the above examples.
본 발명은 3D 프린팅을 통해 출력하여, 환자의 구강에 맞출 수 있는 악궁 확장 장치로, 상악 또는 하악에 모두 사용할 수 있으며, 스크류와 같은 별도의 고정 장치가 없이도 사용할 수 있어 별도의 시술 고정이 필요하지 않다. The present invention is a maxillary expansion device that can be output through 3D printing and can be adjusted to fit a patient's oral cavity. It can be used on either the upper or lower jaw, and can be used without a separate fixing device such as a screw, so separate surgical fixation is not required.
또한, 악궁 확장 장치를 사용 시에도 종래 악궁 확장 장치에 비해, 이물감이 적고, 구강 내 상처가 발생하지 않아 악궁 확장 장치에 의한 통증의 발생을 유발하지 않는다.In addition, when using the dental arch expander, there is less foreign body sensation and no wounds occur in the oral cavity compared to conventional dental arch expanders, so the dental arch expander does not cause pain.
도 1은 본 발명의 일 실시예에 따른 악궁 확장 장치에 대한 도면이다. FIG. 1 is a drawing of a bow expansion device according to one embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 악궁 확장 장치에 대한 도면이다.FIG. 2 is a drawing of a bow expansion device according to one embodiment of the present invention.
도 3은 본 발명의 일 실시예에 따른 종래 악궁 확장 장치에 대한 도면이다.FIG. 3 is a drawing of a conventional arch expansion device according to one embodiment of the present invention.
도 4은 본 발명의 일 실시예에 따른 종래 악궁 확장 장치에 대한 도면이다.FIG. 4 is a drawing of a conventional arch expansion device according to one embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 GPC 측정 결과이다. Figure 5 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 6은 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 NMR 측정 결과이다.Figure 6 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 7은 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 GPC 측정 결과이다. Figure 7 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 8은 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 NMR 측정 결과이다.Figure 8 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 9는 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 GPC 측정 결과이다. Figure 9 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 10은 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 NMR 측정 결과이다.Figure 10 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 11은 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 GPC 측정 결과이다. Figure 11 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 12는 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 NMR 측정 결과이다.Figure 12 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 13은 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 GPC 측정 결과이다. Figure 13 shows the GPC measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 14는 본 발명의 일 실시예에 따른 광경화형 올리고머에 대한 NMR 측정 결과이다.Figure 14 shows the NMR measurement results for a photocurable oligomer according to one embodiment of the present invention.
도 15는 본 발명의 일 실시예에 따른 악궁 확장 장치에 대한 도면이다. FIG. 15 is a drawing of a bow expansion device according to one embodiment of the present invention.
도 16은 본 발명의 일 실시예에 따른 악궁 확장 장치의 사용에 대한 예시 도면이다. FIG. 16 is an exemplary drawing of the use of a bow expansion device according to one embodiment of the present invention.
도 17은 본 발명의 일 실시예에 따른 악궁 확장 장치의 사용에 대한 예시 도면이다.FIG. 17 is an exemplary drawing of the use of a bow expansion device according to one embodiment of the present invention.
본 발명은 상악 또는 하악에 밀접하게 위치하는 고정부; 및 상기 고정부에 결합되며, 치아와 잇몸의 경계에 접하도록 형성되는 확장부를 포함하는 악궁 확장 장치에 관한 것이다.The present invention relates to a dental arch expansion device comprising a fixed part positioned closely to the upper or lower jaw; and an expansion part coupled to the fixed part and formed to contact the border between teeth and gums.
이하, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예에 대하여 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다.Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein.
본 발명에서 악궁이란 치아 배열이 교합면 방향에서 봤을 때, 말발굽 형태의 아치를 형성하기에 턱에 있는 아치 형태를 의미한다. In the present invention, the dental arch means an arch shape in the jaw that forms a horseshoe-shaped arch when viewed from the occlusal plane when the teeth are arranged.
본 발명에서 악궁 확장이란 치아의 각도 조절을 통해 악궁을 확장하거나 기저골의 뼈를 좌우로 확장하는 것을 의미한다. In the present invention, expansion of the dental arch means expanding the dental arch by adjusting the angle of the teeth or expanding the bone of the basal bone to the left and right.
치과 교정 치료에서, 악궁확장치료는 연령에 따라 목적이 차이가 있다. 어린이 및 청소년의 경우 악궁 확장으로 골격 개선 및 부정 교합 개선을 도모할 수 있으며, 성인의 경우, 부정 교합으로 인해 치아 기능 회복 및 외모 개선을 목적으로 한 교정 치료를 위해, 악궁 확장 치료가 동반될 수 있다. In orthodontic treatment, the purpose of arch expansion treatment varies depending on age. In children and adolescents, arch expansion can be used to improve the skeleton and malocclusion, and in adults, arch expansion treatment can be used to restore dental function and improve appearance due to malocclusion.
종래 일반적인 도 3과 같이 와이어를 이용하여 악궁을 확장시킬 수 있다. 악궁확장장치는 앞서 설명한 바와 같이 폭이 좁은 악궁을 확장하는 장치이며, 주로 상악에 많이 사용될 수 있다. 또한, 치아만 벌리는 것이 아니며, 악궁의 뼈를 분류시켜야 한다. Conventionally, as in the general drawing 3, the dental arch can be expanded using a wire. As explained above, the dental arch expander is a device that expands a narrow dental arch, and can be used mainly in the upper jaw. In addition, it does not only spread the teeth, but also classifies the bones of the dental arch.
종래 악궁 확장 장치는 도 3과 같이 와이어만 이용하는 것 뿐 아니라, 도 4와 같이 입 천장에 스크류를 이용하여 고정하는 부분과, 상기 스크류에서부터 치아까지 힘을 가하기 위한 암이 있는 형태도 통상적으로 이용되고 있다.Conventional dental arch expansion devices not only use wires as shown in Fig. 3, but also have a part that is fixed to the roof of the mouth using a screw as shown in Fig. 4, and a form that has an arm for applying force from the screw to the teeth.
상기와 같이 와이어만 이용하거나, 스크류로 입 천장에 본체를 고정하는 악궁 확장 장치의 경우, 악궁을 확장하기 위한 힘을 충분히 발휘할 수 있기는 하나, 입 천장에 과한 힘이 가해져서 상처가 발생하는 경우도 있으며, 침을 삼키거나 말을 하는 경우에서 혀가 입 천장에 닿아야 하는 경우에 과도한 이물감이 발생하여, 환자로 하여금 큰 불편함을 발생하게 한다. In the case of the dental arch expander that uses only wires as described above or fixes the main body to the roof of the mouth with screws, it can sufficiently exert force to expand the dental arch, but in some cases, excessive force may be applied to the roof of the mouth, causing injury, and in cases where the tongue must touch the roof of the mouth when swallowing saliva or speaking, excessive foreign body sensation may occur, causing great discomfort to the patient.
이에 본 발명에서는 종래 악궁 확장 장치와 같이, 스크류와 같은 별도의 고정 장치가 없이도 사용할 수 있어 별도의 시술 고정이 필요하지 않고, 환자의 구강에 맞출 수 있는 악궁 확장 장치로, 상악 또는 하악에 모두 사용할 수 있는 것을 특징으로 한다. Accordingly, the present invention is characterized in that it can be used without a separate fixing device, such as a screw, unlike a conventional arch expansion device, so that a separate surgical fixation is not required, and it is a jaw expansion device that can be adjusted to the patient's oral cavity, and can be used on either the upper or lower jaw.
구체적으로, 상악 또는 하악에 밀접하게 위치하는 고정부; 및 상기 고정부에 결합되며, 치아와 잇몸의 경계에 접하도록 형성되는 확장부를 포함할 수 있다. Specifically, it may include a fixed portion positioned closely to the upper or lower jaw; and an extension portion joined to the fixed portion and formed to contact the border between the teeth and gums.
도 1은 본 발명의 일 실시예에 따른 악궁 확장 장치(100)에 대한 것으로, 구체적으로 상악에 사용하는 악궁 확장 장치(100)의 일 예시에 관한 것이다. 고정부(200)는 상악의 경구개 및 연구개의 형상과 대응되도록 형성되어, 상기 경구대 및 연구개에 밀착하여 위치할 수 있으며, 확장부(300)는 상악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해질 수 있다. FIG. 1 is a diagram showing an arch expansion device (100) according to one embodiment of the present invention, and specifically, an example of an arch expansion device (100) used in the upper jaw. A fixing member (200) is formed to correspond to the shape of the hard palate and soft palate of the upper jaw, and can be positioned in close contact with the hard palate and soft palate, and an expanding member (300) is formed to contact the boundary between the teeth and gums of the upper jaw, and is symmetrical in the left and right directions based on the center of the fixing member, so that a force for expanding the arch can be applied.
종래 악궁 확장 장치는 도 3에 나타낸 바와 같이, 와이어를 치아에 결합시켜 장치를 결합시키고, 악궁을 확장시키는 힘도 나타낼 수 있다. 또는 본체를 상악에 스크류를 이용하여 고정시키는 방식을 사용하였다. As shown in Fig. 3, a conventional dental arch expansion device can be attached to a tooth by connecting a wire to the device, and can also exhibit a force to expand the dental arch. Alternatively, a method was used in which the main body was fixed to the upper jaw using a screw.
본 발명의 경우, 도 1에 나타낸 바와 같이, 별도의 고정 장치가 없음에도 불구하고, 입 천정에 밀착시켜 쉽게 빠지지 않고, 악궁 확장 효과를 나타낼 수 있다. In the case of the present invention, as shown in Fig. 1, even without a separate fixing device, it is possible to achieve an arch expansion effect by attaching it to the roof of the mouth without easily falling off.
구체적으로, 상기 고정부(200)는 상악의 경개부 및 연구개의 형상과 대응되도록 출력되어, 사용 시, 완전히 밀착할 수 있다. 상악은 통상적으로 아치 형상으로 내부로 홈이 형성되듯이 움푹 파인 형상이다. 이에, 3D 프린터를 이용하여 출력된 고정부(200)도 이와 대응되는 형상을 가질 수 있다. Specifically, the fixing member (200) is printed to correspond to the shape of the upper jaw's hard palate and soft palate, so that it can be completely sealed when used. The upper jaw is usually in a concave shape with a groove formed inside in an arch shape. Accordingly, the fixing member (200) printed using a 3D printer can also have a shape corresponding to this.
상기 고정부(200)는 확장부(300)와 함께 본 발명의 악궁 확장 장치를 사용할 때, 쉽게 빠지지 않도록 하는 것이며, 종래 악궁 확장 장치들과 달리, 입 천장과 대응되는 형상으로 이물감을 적게 느끼게 할 수 있다. The above-mentioned fixed part (200) prevents the dental arch expansion device of the present invention from easily falling off when used together with the expansion part (300), and unlike conventional dental arch expansion devices, it has a shape corresponding to the roof of the mouth, thereby reducing the feeling of a foreign body.
또한, 상기 확장부(300)는 치아 및 잇몸의 경계에 접하도록 형성되어, 환자의 잇몸에 밀착한 형태로 결합하여 사용하는 것이다. In addition, the above-mentioned extension part (300) is formed to be in contact with the border of the teeth and gums, and is used by being combined in a form that closely adheres to the patient's gums.
상기 본 발명의 악궁 확장 장치(100)는 후술하는 바와 같이, 환자의 구강 상태를 3D 스캐너를 통해 영상 이미지로 촬영하고, 이를 컴퓨터 프로그램을 통해, 단계적인 악궁 확장 장치의 형상이 도출되면, 단계에 맞는 형태로 출력될 수 있다. As described below, the dental arch expansion device (100) of the present invention captures the oral condition of a patient as a video image using a 3D scanner, and when the shape of the dental arch expansion device is derived step by step through a computer program, it can be output in a form appropriate for the step.
즉, 출력되는 악궁 확장 장치(100)는 현재 환자의 악궁보다 확장된 악궁의 형상에 대응되는 형태로 출력되는 것이다. That is, the output arch expansion device (100) is output in a shape corresponding to the shape of the arch that is expanded more than the current patient's arch.
상기와 같이 환자의 단계별 확장된 악궁의 형태로 출력된 악궁 확장 장치(100)는 환자의 상악에 결합시키고자 하는 경우는, 쉽게 밀착하지 않을 수 있다. As described above, the dental arch expansion device (100) output in the form of a patient's stepwise expanded dental arch may not be easily attached when combined with the patient's upper jaw.
즉, 본 발명의 악궁 확장 장치(100)는 환자의 상악 또는 하악에 완전히 밀착한 상태이며, 구체적으로 치아와 잇몸의 경계선까지 밀착하여 결합되는 것으로, 밀착한 상태에서 악궁 확장 장치(100)가 현재 환자의 악궁보다 큰 형태로 출력됨에 따라, 본 발명의 악궁 확장 장치(100)에 대해 중심점을 기준으로 하여, 외곽으로 펴지려는 힘에 의해 악궁을 확장할 수 있다. That is, the dental arch expansion device (100) of the present invention is in a state of complete adhesion to the patient's upper or lower jaw, and specifically, is combined in such a way that it is in adhesion up to the boundary line between the teeth and gums. As the dental arch expansion device (100) is output in a form larger than the patient's current dental arch in the adhesion state, the dental arch can be expanded by a force that tends to spread outward based on the center point of the dental arch expansion device (100) of the present invention.
상기와 같이 본 발명의 악궁 확장 장치(100)를 이용하여 악궁 확장이 가능하기 위해선, 환자의 상악 또는 하악에 밀접하게 위치시키는 것이 매우 중요하다. As described above, in order to enable expansion of the maxilla using the maxillary expansion device (100) of the present invention, it is very important to position it closely to the patient's upper or lower jaw.
상기와 같은 특징에 대해선 후술하도록 한다. The above features will be described later.
도 2는 본 발명의 일 실시예에 따른 악궁 확장 장치(100)로, 하악에 사용할 수 있는 것에 대한 예시이다. FIG. 2 is an example of a dental arch expansion device (100) according to one embodiment of the present invention that can be used on the lower jaw.
하악은 혀 아래 부분에 사용하는 것으로, 상악에 사용하는 악궁 확장 장치(100)와 고정부(200, 200')의 형상이 상이하다. The lower jaw is used for the area under the tongue, and the shape of the arch expander (100) and the fixing part (200, 200') used for the upper jaw are different.
혀 밑은 설소대, 혀밑샘과 같이 본 발명의 고정부(200')가 위치하지 못하는 부분이 있어, 해당 부분이 아닌 부분에 고정부(200')가 위치하게 된다. Since there are parts under the tongue, such as the lingual frenulum and the sublingual gland, where the fixing part (200') of the present invention cannot be positioned, the fixing part (200') is positioned in a part other than the relevant part.
단, 확장부(300')는 상악에 사용하는 악궁 확장 장치(100)와 마찬가지로, 하악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해질 수 있다. However, the expansion part (300') is formed to contact the boundary between the teeth and gums of the lower jaw, similar to the arch expansion device (100) used for the upper jaw, and is symmetrical in the left and right directions based on the center of the fixing part, so that force can be applied to expand the arch.
또한, 본 발명의 악궁 확장 장치(100)는 치아 교정부(미도시)를 추가로 포함할 수 있다. 상기 치아 교정부(미도시)는 구강 내측으로 위치한 치아를 외측으로 교정하기 위해, 확장부에 연장하여 결합할 수 있다. In addition, the dental arch expansion device (100) of the present invention may additionally include an orthodontic unit (not shown). The orthodontic unit (not shown) may be extended and joined to the expansion unit in order to correct teeth positioned inwardly of the oral cavity toward the outside.
일반적으로, 본 발명의 확장부(300, 300')는 치아 및 잇몸의 경계 부분에 접하도록 형성되며, 상기 확장부(300, 300')에 의해 상악 또는 하악에 가해지는 힘이 치아 및 잇몸의 경계 부분까지만 미치도록 한다. In general, the extension (300, 300') of the present invention is formed to contact the boundary between the teeth and gums, and the force applied to the upper or lower jaw by the extension (300, 300') is allowed to reach only the boundary between the teeth and gums.
이는, 치아 부분까지 미는 힘이 발생하게 되는 경우에는, 치아 전체에 힘이 가해지는 것이 아니고, 치아의 일부에만 힘이 가해지는 경우로, 치아가 기울어지는 문제가 발생할 수 있다. This means that when a force is applied to a part of the tooth, the force is not applied to the entire tooth, but only to a part of the tooth, which can cause the tooth to tilt.
즉, 본 발명의 악궁 확장 장치(100)에 의해서는 악궁을 확장시키고자 하는 것으로, 상악 또는 하악을 확장시키는 효과만 발휘하고자 하는 것으로, 치아가 본 발명의 악궁 확장 장치(100)에 의해 기울어짐이 발생하면 안된다. That is, the dental arch expansion device (100) of the present invention is intended to expand the dental arch, and only the effect of expanding the upper or lower jaw is intended to be exerted, so that the teeth should not be tilted by the dental arch expansion device (100) of the present invention.
상기와 같이 치아의 기울어짐을 방지하기 위해서, 본 발명의 악궁 확장 장치(100)는 확장부(300, 300')가 치아 및 잇몸의 경계에 접하도록 형성될 수 있다. In order to prevent the tilting of the teeth as described above, the dental arch expansion device (100) of the present invention can be formed so that the expansion part (300, 300') comes into contact with the boundary between the teeth and gums.
일반적으로 치아는 치관, 치경부 및 치근으로 구분되며, 상기 치관은 눈에 보이는 치아의 윗부분이고, 치근은 치아의 뿌리 부분이며, 치경부는 앞서 설명한 치아와 잇몸의 경계 부분을 의미하는 것이다. Generally, teeth are divided into the crown, cervical region, and root. The crown is the visible upper part of the tooth, the root is the root of the tooth, and the cervical region refers to the boundary between the tooth and the gums as described above.
외력에 의해 치아 전체를 이동시키기 위해선, 치아의 중심부에 힘이 가해지는 것이 중요하고, 이때 치아의 중심부는 치경부에 해당된다고 할 것이다. 즉, 치근 쪽인 잇몸부에만 미는 힘이 작용하는 경우에는 원활하게 치아에 미는 힘이 가해지지 않고, 치관 쪽에 미는 힘이 작용하는 경우에는 치아의 기울어짐 현상이 발생할 수 있다. 이에 본 발명에서는 악궁 확장 장치(100)에 의해 악궁 확장 효과를 나타내며 치아 기울어짐 현상을 방지할 수 있다. In order to move the entire tooth by an external force, it is important to apply force to the center of the tooth, and at this time, the center of the tooth corresponds to the cervical region. In other words, if a pushing force is applied only to the gum area near the root, the pushing force is not applied smoothly to the tooth, and if a pushing force is applied to the crown, the tooth may tilt. Accordingly, in the present invention, the jaw expansion effect is exhibited by the jaw expansion device (100), and the tooth tilting phenomenon can be prevented.
다만, 환자의 치아 구조에 따라, 치아 중 일부가 내측으로 기울어지거나, 안쪽으로 이빨이 돌출되어 있는 경우에는, 이를 구강 외측으로 이동시키는 것이 필요한 경우가 있다. However, depending on the patient's tooth structure, if some of the teeth are tilted inward or protruding inward, it may be necessary to move them to the outside of the oral cavity.
즉, 치아 간의 간격이 매우 좁아 치아가 불균일하게 위치하는 경우에서, 일부 치아가 치아 내측에 위치하거나, 구강 안쪽으로 기울어진 상태일 수 있다. That is, in cases where the gaps between teeth are very narrow and the teeth are positioned unevenly, some teeth may be positioned on the inside of the teeth or tilted toward the inside of the mouth.
이러한 경우 종래에는, 악궁 확장 장치를 이용하여 일단 치아 간에 간격을 넓게 하고, 교정 장치를 이용하여 치아들이 균일하게 배치하도록 위치를 조정하였다. In such cases, conventionally, a dental arch expander was used to first widen the space between teeth, and then an orthodontic device was used to adjust the positions of the teeth so that they were evenly spaced.
반면, 본 발명의 악궁 확장 장치(100)는 앞서 설명한 바와 같이, 환자의 구강 상태를 3D 스캐너를 이용하여 영상으로 데이터화하고, 이를 컴퓨터 프로그램을 통해, 단계별 악궁 확장 장치(100)로 출력하는 것으로, 앞서 설명한 바와 같이, 환자의 치아 중 일부를 외부로 동시에 밀어내서 위치시킬 필요가 있는 경우, 확장부(300, 300')에 연속하여 치아 교정부(미도시)를 형성하여, 악궁 확장과 치아의 교정 효과가 동시에 나타낼 수 있다. On the other hand, as previously described, the dental arch expansion device (100) of the present invention converts the patient's oral condition into image data using a 3D scanner, and outputs this to the dental arch expansion device (100) step by step through a computer program. As previously described, in a case where it is necessary to simultaneously push out and position some of the patient's teeth, an orthodontic part (not shown) is formed in succession to the expansion part (300, 300'), so that the dental arch expansion and tooth orthodontic effects can be achieved simultaneously.
상기와 같은 악궁 확장 장치(100)는 앞서 설명한 바와 같이, 환자의 상악 또는 하악에 밀접하게 위치하여, 확장하는 힘을 발휘할 수 있어야 한다. 이렇게 작용하기 위해선, 환자의 상악 또는 하악에 완전히 밀착시킬 수 있어야 한다. As described above, the dental arch expansion device (100) must be positioned closely to the patient's maxilla or mandible and must be able to exert an expanding force. In order to function in this manner, it must be able to be completely adhered to the patient's maxilla or mandible.
이에, 본 발명에서는 형상 기억 고분자를 이용하여 3D 프린터로 악궁 확장 장치(100)를 출력하는 것을 특징으로 한다. Accordingly, the present invention is characterized by printing an arch expansion device (100) using a 3D printer using a shape memory polymer.
상기의 악궁 확장 장치(100)는 사용하기에 앞서, 40℃ 이상의 물에 담그면, 유연성이 생겨 환자의 상악 또는 하악에 맞는 형상으로 변형될 수 있다. The above-mentioned dental arch expansion device (100) can be made flexible and transformed into a shape that fits the patient's upper or lower jaw by soaking it in water above 40°C before use.
종래, 투명 교정 장치를 제조하는 경질의 플라스틱 소재는 악궁 확장 장치로 사용 시, 악궁을 확장하는 충분한 힘을 발휘할 수 있으나, 사용을 위해 환자의 상악 또는 하악에 완전히 밀착하기 어려운 문제가 있다. 즉, 단계별로 확장된 형태의 악궁에 맞는 형태로 제조된 상태에서, 아직 확장되지 않은 환자의 상악 또는 하악에 결합하기 위해선, 악궁 확장 장치를 구부려 사용해야 하나, 구부리기 위해 힘을 가하는 경우 부러짐이 발생할 수도 있고, 구부려진 상태에서 끼우더라도 완전히 밀착시켜 사용은 불가능하다. Conventionally, hard plastic materials used to manufacture transparent orthodontic devices can exert sufficient force to expand the arch when used as arch expanders, but have the problem of making it difficult to completely adhere to the patient's upper or lower jaw for use. That is, in a state where the arch expander is manufactured in a shape that fits a stepwise expanded form, in order to be attached to the patient's upper or lower jaw that has not yet been expanded, it must be used by bending it, but if force is applied to bend it, it may break, and even if it is fitted in a bent state, it is impossible to use it in a completely adhered state.
반면, 본 발명의 악궁 확장 장치(100)는 후술하는 3D 프린터용 광경화형 고분자 조성물을 이용하여 출력되는 것으로, 40℃ 이상의 물에 담그면, 유연성이 생기고, 형상의 변형이 가능해져 환자에게 고통을 유발하지 않으면서도, 확장이 필요한 상악 또는 하악에 완전히 밀착시킬 수 있다. On the other hand, the dental arch expansion device (100) of the present invention is printed using a photocurable polymer composition for a 3D printer, which will be described later. When immersed in water at 40°C or higher, it becomes flexible and its shape can be deformed, so that it can be completely attached to the upper or lower jaw that requires expansion without causing pain to the patient.
상기 본 발명의 악궁 확장 장치(100)는 환자에게 사용할 때는 40℃ 이상의 물에 담궈 사용하며, 이때는 환자의 악궁에 맞춤 형상으로 변형된 상태이나, 체온에 의해 서서히 원래의 형상으로 복원되고, 이때 복원력에 의해 상악 또는 하악에 미는 힘이 발생하게 되어, 악궁을 확장할 수 있다. When the above-described dental arch expansion device (100) of the present invention is used on a patient, it is immersed in water of 40°C or higher. At this time, it is deformed into a shape that fits the patient's dental arch, but is gradually restored to its original shape by body temperature. At this time, a force is generated on the upper or lower jaw by the restoring force, so that the dental arch can be expanded.
상기 3D 프린터용 광경화형 고분자 조성물은 하기 화학식 1로 표시되는 3D 프린팅용 광경화형 올리고머; 모노머; 광개시제; 및 안정제를 포함할 수 있다:The photocurable polymer composition for a 3D printer may include a photocurable oligomer for 3D printing represented by the following chemical formula 1; a monomer; a photoinitiator; and a stabilizer:
[화학식 1][Chemical Formula 1]
[규칙 제91조에 의한 정정 08.03.2024]
[Correction under Rule 91 08.03.2024]
[화학식 2][Chemical formula 2]
[화학식 3][Chemical Formula 3]
[화학식 4][Chemical Formula 4]
[화학식 5][Chemical Formula 5]
[화학식 6][Chemical formula 6]
여기서, Here,
n은 1 내지 100의 정수이며, n is an integer from 1 to 100,
m은 1 내지 50의 정수이며, m is an integer from 1 to 50,
A, B, C 및 D는 서로 동일하거나 상이하며, 각각 독립적으로 화학식 2 내지 6으로 표시되는 화합물로 이루어진 군으로부터 선택되는 반복단위이며, A, B, C and D are identical or different from each other and are repeating units each independently selected from the group consisting of compounds represented by chemical formulas 2 to 6,
a, b, c 및 d는 서로 동일하거나 상이하며, 각각 독립적으로 1 내지 30의 정수이며, a, b, c and d are the same or different from each other and are each independently an integer from 1 to 30,
R1 및 R2는 서로 동일하거나 상이하며, 각각 독립적으로 수소, 중수소, 치환 또는 비치환된 탄소수 1 내지 30의 알킬기, 치환 또는 비치환된 탄소수 2 내지 30의 알케닐기, 치환 또는 비치환된 탄소수 2 내지 30의 알키닐기, 치환 또는 비치환된 탄소수 6 내지 30의 아릴기 및 치환 또는 비치환된 탄소수 1 내지 30의 헤테로아릴기로 이루어진 군으로부터 선택될 수 있다.R 1 and R 2 are the same or different, and can each independently be selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms.
상기 광경화형 올리고머는 메인 체인으로 우레탄 아크릴레이트 구조를 포함하며, 상기 우레탄 구조에 광경화 작용기가 결합되고, 화합물 내 소프트 작용기 및 하드 작용기를 포함한 것을 특징으로 한다. The above photocurable oligomer is characterized by including a urethane acrylate structure as a main chain, a photocurable functional group bonded to the urethane structure, and including a soft functional group and a hard functional group in the compound.
상기 광경화형 조성물 내 포함된 소프트 작용기에 의해 출력물은 플렉서블한 성질을 나타내며, 또한, 하드 작용기에 의해, 열 저항성(Heat resistant)을 나타낼 수 있다. The output exhibits flexible properties due to the soft functional group included in the photocurable composition, and can also exhibit heat resistance due to the hard functional group.
즉, 광경화형 올리고머에 광경화 작용기를 결합시키고, 소프트 작용기 및 하드 작용기를 이용함에 따라, 상온에서 부드러운 성질을 갖는 탄소 골격을 이용하여, 플렉서블 효과를 나타낼 수 있을 뿐만 아니라, 상온에서 하드한 성질을 갖는 탄소 골격을 이용하여, 열에 강한 성질을 함께 나타낼 수 있다. That is, by combining a photocurable functional group with a photocurable oligomer and utilizing a soft functional group and a hard functional group, a flexible effect can be exhibited by utilizing a carbon skeleton having soft properties at room temperature, and heat-resistant properties can also be exhibited by utilizing a carbon skeleton having hard properties at room temperature.
상기 광경화형 올리고머는 하드한 성질을 갖는 탄소 골격을 포함함에 따라, 열적 물성, 강도, 탄성율 및 인장신율과 같은 물리적 특성이 우수하고, 열에 의해 원래의 형상으로 복원이 가능한 3D 프린팅 출력물을 제조할 수 있다. Since the above photocurable oligomer contains a carbon skeleton having hard properties, it can produce a 3D printing output product having excellent physical properties such as thermal properties, strength, elastic modulus, and tensile elongation, and can be restored to its original shape by heat.
또한, 광경화형 올리고머는 소프트한 성질을 갖는 탄소 골격을 포함함에 따라, 열이 제공된 후 외력에 의해 형상의 변형이 가능하다.In addition, since the photocurable oligomer contains a carbon skeleton with soft properties, its shape can be deformed by an external force after heat is provided.
일반적으로, 3D 프린터용 조성물은 후술하는 바와 같이, 3D 프린팅용 광경화형 올리고머; 모노머; 광개시제; 및 안정제를 포함할 수 있다. 상기 조성물에 포함되는 올리고머, 모노머, 광개시제 및 안정제는 출력물의 물리적 성질에 모두 영향을 미치기는 하나, 가장 큰 영향을 미치는 것은 올리고머이다. 이에, 일반적적으로, 3D 출력물의 물리적인 특성을 높이기 위해, 하드한 성질을 갖는 탄소 골격만을 포함하고, 이는 출력물의 물리적 특성을 높일 수 있으나, 반대로, 사용에 의해 형상이 변형되는 경우, 형상 복원이 불가하여, 다 회 사용이 불가한 문제가 있다. In general, a composition for a 3D printer may include, as described below, a photocurable oligomer for 3D printing; a monomer; a photoinitiator; and a stabilizer. The oligomer, monomer, photoinitiator, and stabilizer included in the composition all affect the physical properties of the output, but the oligomer has the greatest effect. Accordingly, in general, in order to improve the physical properties of the 3D output, only a carbon skeleton having a hard property is included, which can improve the physical properties of the output, but conversely, if the shape is deformed due to use, the shape cannot be restored, which causes a problem in that it cannot be used multiple times.
본 발명에서의 3D 프린터용 조성물은 하드한 성질을 갖는 탄소 골격 및 소프트한 성질을 갖는 탄소 골격을 포함함에 따라, 열적 물성, 강도, 탄성율 및 인장신율과 같은 물리적 특성이 우수할 뿐만 아니라, 소프트 작용기의 플렉서블한 성질을 함께 이용할 수 있어, 열이 제공된 상태에서 외력에 의해 형상을 변형시키면 변형된 형상으로 고정될 수 있고, 이후 다시 열이 제공되면 원래의 형상으로 복원을 가능하게 한다. Since the composition for a 3D printer of the present invention includes a carbon skeleton having a hard property and a carbon skeleton having a soft property, not only is it excellent in physical properties such as thermal properties, strength, elastic modulus, and tensile elongation, but also can utilize the flexible property of the soft functional group, so that when the shape is deformed by an external force in a state where heat is provided, the deformed shape can be fixed, and when heat is provided again, the original shape can be restored.
상기 A, B 및 D는 서로 동일하거나 상이하며, 각각 독립적으로 화학식 2 또는 3으로 표시되는 화합물로 선택되는 반복단위일 수 있다. The above A, B and D are the same as or different from each other, and can be repeating units each independently selected from compounds represented by chemical formula 2 or 3.
상기 C는 화학식 4 내지 6으로 표시되는 화합물로 이루어진 군으로부터 선택되는 반복단위일 수 있다. The above C may be a repeating unit selected from the group consisting of compounds represented by chemical formulas 4 to 6.
구체적으로, 상기 화학식 1로 표시되는 광경화형 올리고머는 우레탄 아크릴레이트 계열을 합성하는 방법에 의해 제조될 수 있다. 기본적으로 다이올과 다이이소시아네이트의 단계적인 고분자화 반응으로 진행되며 재료의 중합 과정에서 분자량이 증가함에 따른 재료의 겔화를 방지하기 위하여 반응 사이트가 없는 아크릴 단량체를 서스펜션으로 사용하였다. 사용 가능한 아크릴 단량체로 본 발명의 올리고머의 합성에 이용한 모노머는 Isobornyl acrylate, Cyclic Trimethylolpropane Formal Acrylate, Lauryl acrylate, Lauryl methacrylate, 3,5,3-trimethelhexyl acrylate, Tetrahydrofurfuryl acrylate, Tetrahydrofurfuryl methacrylate, Benzyl methacrylate 등 일 수 있다. Specifically, the photocurable oligomer represented by the above chemical formula 1 can be manufactured by a method for synthesizing a urethane acrylate series. Basically, it proceeds by a stepwise polymerization reaction of a diol and a diisocyanate, and in order to prevent gelation of the material due to an increase in molecular weight during the polymerization process of the material, an acrylic monomer having no reaction site is used as a suspension. The monomer used in the synthesis of the oligomer of the present invention as an available acrylic monomer may be Isobornyl acrylate, Cyclic Trimethylolpropane Formal Acrylate, Lauryl acrylate, Lauryl methacrylate, 3,5,3-trimethelhexyl acrylate, Tetrahydrofurfuryl acrylate, Tetrahydrofurfuryl methacrylate, Benzyl methacrylate, etc.
보다 구체적으로, 1차적으로 단량체로 사용되는 모노머 베이스에 다이올을 사전 투입하여 안정화시키고 다이이소시아네이트를 투입하였다. 우레탄 반응이 진행됨에 따라 반응열이 발생하며 우레탄 체인이 길어지며 분자량이 증가하였다. More specifically, diol was pre-introduced into the monomer base used primarily as a monomer to stabilize it, and then diisocyanate was introduced. As the urethane reaction progressed, reaction heat was generated, the urethane chain became longer, and the molecular weight increased.
분자량이 증가함에 따라 재료의 점도도 증가할 수 있다. 상기의 분자량이 증가하는 것이 급격하게 진행되는 경우, 온도가 급격하게 상승하게 되고, 이로 인해 우레탄 반응 또한 더욱 빠르게 진행되며, 이로 인해, 올리고머는 충분한 분자량에 도달하기 전에 겔화되어, 재료로 사용이 불가능해 진다. 이에, 본 발명에서는 이러한 반응을 방지하기 위해, 다이올을 투입하는 용매로, Isobornyl acrylate, Cyclic Trimethylolpropane Formal Acrylate, Lauryl acrylate, Lauryl methacrylate, 3,5,3-trimethelhexyl acrylate, Tetrahydrofurfuryl acrylate, Tetrahydrofurfuryl methacrylate, Benzyl methacrylate 및 이들의 혼합으로 이루어진 군으로부터 선택되는 것을 사용하였다. 상기 용매는 반응에 참여하지 않는 것으로, 재료의 반응속도를 컨트롤하며 분자량 증가에 따른 급격한 점도 상승을 방지하는 역할로 사용하고 있다. 또한, 본 발명의 올리고머를 합성하기 위한 모노머들은 수산기 또는 우레탄기 같은 반응 우레탄 반응이 가능한 작용기가 없어야 한다. 상기와 같은 조건을 통해, 본 발명에서는 대량 생산 및 공정 안정성이 우수하게 올리고머의 생산이 가능하다고 할 것이다. As the molecular weight increases, the viscosity of the material may also increase. If the above-mentioned molecular weight increase proceeds rapidly, the temperature rises rapidly, which also causes the urethane reaction to proceed more quickly, and as a result, the oligomer is gelled before reaching a sufficient molecular weight, making it impossible to use as a material. Accordingly, in the present invention, in order to prevent this reaction, a solvent for introducing a diol is selected from the group consisting of Isobornyl acrylate, Cyclic Trimethylolpropane Formal Acrylate, Lauryl acrylate, Lauryl methacrylate, 3,5,3-trimethelhexyl acrylate, Tetrahydrofurfuryl acrylate, Tetrahydrofurfuryl methacrylate, Benzyl methacrylate, and mixtures thereof. The solvent does not participate in the reaction, and is used to control the reaction speed of the material and prevent a rapid increase in viscosity due to an increase in molecular weight. In addition, the monomers for synthesizing the oligomer of the present invention must not have a functional group capable of reactive urethane reaction, such as a hydroxyl group or a urethane group. Through the conditions described above, it will be said that the present invention can produce the oligomer with excellent mass production and process stability.
또한, 다이올과 다이이소시아네이트의 당량비는 다이올 보다 다이이소시아네이트의 당량이 더 높은 상태로 설정하여 올리고머 말단이 이소이아네이트 기로 존재하도록 유도하였다. 반응 과정 중 Zn계 촉매를 포함한 반응 촉매를 이용할 수 있다. 상기 촉매는 포함하거나 포함하지 않을 수 있다. 촉매는 반응을 보다 빠르게 진행시키기 위해 포함되는 것으로 필수적으로 포함되지 않더라도 반응이 진행이 가능하나, 포함하더라도 극소량 넣고 반응을 진행할 수 있다.In addition, the equivalent ratio of diol and diisocyanate was set to a state where the equivalent of diisocyanate was higher than that of diol, so that the oligomer terminal existed as an isocyanate group. A reaction catalyst including a Zn-based catalyst can be used during the reaction process. The catalyst may or may not be included. The catalyst is included to make the reaction proceed more quickly, and the reaction can proceed even if it is not necessarily included, but even if it is included, the reaction can proceed with a very small amount added.
우레탄 반응종결에 따른 승온이 중단된 이후 올리고머 말단의 엔드 캡핑을 위하여 2-하이드록시 아크릴레이트 및 2-하이드록시 메타크릴레이트를 드롭 방식을 통하여 투입하여 재료 말단부를 엔드 캡핑하였다.After the temperature increase was stopped due to the completion of the urethane reaction, 2-hydroxy acrylate and 2-hydroxy methacrylate were added dropwise to end-cap the ends of the oligomers.
상기 올리고머의 제조를 위해 이용되는 다이올은 하기와 같다:The diols used for the production of the above oligomers are as follows:
또한, 상기 다이올과 반응하기 위한 다이이소시아네이트는 하기와 같다:In addition, the diisocyanate for reacting with the above diol is as follows:
또한, 상기 우레탄 반응의 종결 또는 분자량을 증가하기 위해 포함될 수 있는 모노머는 하기와 같다:Additionally, monomers that may be included to terminate the urethane reaction or increase the molecular weight are as follows:
상기의 제조 방법에 의해 제조된 상기 화학식 1로 표시되는 화합물은 하기 화합물로 이루어진 군으로부터 선택될 수 있다:The compound represented by the chemical formula 1 manufactured by the above manufacturing method can be selected from the group consisting of the following compounds:
[규칙 제91조에 의한 정정 08.03.2024]
[Correction under Rule 91 08.03.2024]
상기 광경화형 올리고머는 수평균분자량(Mn)이 1,500 내지 6,000이며, 1,500 내지 5,500이며, 1,600 내지 5,000일 수 있다. 상기 광경화형 올리고머는 중량평균분자량(Mw)이 2,500 내지 9,000이며, 3,000 내지 8,500이며, 3,500 내지 8,000일 수 있다. The photocurable oligomer may have a number average molecular weight (Mn) of 1,500 to 6,000, 1,500 to 5,500, or 1,600 to 5,000. The photocurable oligomer may have a weight average molecular weight (Mw) of 2,500 to 9,000, 3,000 to 8,500, or 3,500 to 8,000.
상기 범위 내에서 수평균분자량 및 중량평균분자량을 갖는 올리고머를 이용하여, 후술하는 3D 프린팅용 광경화형 조성물을 제조하고, 이를 이용하여, 환자의 구강 구조에 맞춤형으로 악궁 확장 장치를 출력하고, 이를 이용하여 환자의 사용 편의성을 높이고, 악궁 확장 효과를 높일 수 있다. 구체적으로, 상기 본 발명의 악궁 확장 장치는 50 내지 100℃의 물에 담근 후, 형상을 변형시키면 변형된 형태로 형상이 변화되나, 이를 상악 또는 하악에 끼운 상태로 사용하게 되면 체온에 의해 형상이 변화된 악궁 확장 장치가 서서히 원래 형상으로 복원되어 악궁 확장 효과를 나타낼 수 있다. Within the above ranges, an oligomer having a number average molecular weight and a weight average molecular weight is used to manufacture a photocurable composition for 3D printing, which will be described later, and by using the same, a dental arch expansion device customized to a patient's oral structure can be printed, and by using the same, the convenience of use for the patient can be improved and the dental arch expansion effect can be enhanced. Specifically, when the dental arch expansion device of the present invention is immersed in water at 50 to 100°C and then deformed, the shape changes to the deformed form, but when it is used while being fitted to the upper or lower jaw, the dental arch expansion device, whose shape has been changed by body temperature, gradually returns to its original shape, so that the dental arch expansion effect can be exhibited.
상기와 같이 다양한 올리고머를 제품별 필요한 인장 강도, 굴곡강도, 굴곡 탄성 및 굴곡강도와 같은 물리적인 특성에 맞춰 선택하고, 이를 이용하여 3D 프린팅용 광경화형 조성물을 제조하는 경우, 형상 기억 고분자로 특징을 발휘할 수 있어, 환자 맞춤형 악궁 확장 장치로 제공될 수 있다. As described above, when various oligomers are selected according to the physical properties required for each product, such as tensile strength, flexural strength, flexural elasticity, and flexural strength, and a photocurable composition for 3D printing is manufactured using the same, the composition can exhibit characteristics as a shape memory polymer and can be provided as a patient-specific maxillofacial expansion device.
상기 광경화형 올리고머는 점도가 2,000 psi 내지 3,500 psi이며, 2,100 psi 내지 3,200psi이며, 2,200 psi 내지 3,000 psi일 수 있다. 상기 범위의 점도를 갖는 올리고머를 이용하여 광경화형 조성물을 제조하는 경우, 3D 프린터에 사용하기 적합한 점도로 제공할 수 있다. The above photocurable oligomer may have a viscosity of 2,000 psi to 3,500 psi, 2,100 psi to 3,200 psi, or 2,200 psi to 3,000 psi. When a photocurable composition is manufactured using an oligomer having a viscosity in the above range, it can be provided with a viscosity suitable for use in a 3D printer.
상기 광개시제는 BP, TPO, DCP, BPO, DPPO 등을 사용할 수 있으나, 바람직하게는 DPPO(2-hydroxy-2-methylpropiophenone)를 사용할 수 있으나, 상기 예시에 국한되지 않고, 광경화형 조성물을 제조할 수 있는 광개시제는 제한 없이 모두 사용이 가능하다. The photoinitiator may be BP, TPO, DCP, BPO, DPPO, etc., and preferably DPPO (2-hydroxy-2-methylpropiophenone), but is not limited to the above examples, and any photoinitiator capable of producing a photocurable composition may be used without limitation.
상기 안정화제는 다이에틸에탄올아민 및 트리헥실아민과 같은 제3아민, 힌더드 아민, 유기 인산염 및 힌더드 페놀로 이루어진 군에서 선택될 수 있으나, 상기 예시에 국한되지 않고, 광경화형 조성물을 제조할 수 있는 안정화제는 제한 없이 모두 사용이 가능하다. The above stabilizer may be selected from the group consisting of tertiary amines such as diethylethanolamine and trihexylamine, hindered amines, organic phosphates, and hindered phenols, but is not limited to the above examples, and any stabilizer capable of producing a photocurable composition may be used without limitation.
상기 광개시제 및 안정화제 이외에 기타 첨가제를 추가로 포함할 수 있다.In addition to the above photoinitiator and stabilizer, other additives may be additionally included.
상기 첨가제는 열적 및 산화 안정성, 저장안정성, 표면특성, 유동 특성 및 공정 특성 등을 향상시키기 위하여 예를 들어 레벨링제, 슬립제 또는 안정화제 등의 통상의 첨가제를 포함할 수 있다. The above additives may include conventional additives such as leveling agents, slip agents or stabilizers to improve thermal and oxidation stability, storage stability, surface properties, flow properties and process properties.
본 발명의 일 실시예에 따른 광경화형 조성물은 UV 레진 100 중량부에 대해, 광개시제를 1 중량부로 포함할 수 있다. 상기 UV 레진은 본 발명의 광경화형 올리고머; 및 모노머를 포함하는 것으로, 보다 구체적으로 하기 화학식 1로 표시되는 화합물, 하기 화학식 7로 표시되는 화합물 및 하기 화학식 8로 표시되는 화합물을 1:1:1 내지 2:1:1의 중량 비율로 포함할 수 있다.A photocurable composition according to one embodiment of the present invention may contain 1 part by weight of a photoinitiator per 100 parts by weight of a UV resin. The UV resin includes a photocurable oligomer of the present invention; and a monomer, and more specifically, may contain a compound represented by the following chemical formula 1, a compound represented by the following chemical formula 7, and a compound represented by the following chemical formula 8 in a weight ratio of 1:1:1 to 2:1:1.
본 발명의 다른 일 실시예에 따른 악궁 확장 장치의 제조 방법은 3D 스캐너를 이용하여 구강에 대한 3차원 영상을 확보하는 단계; 상기 영상을 이용하여 컴퓨터 프로그램을 통해, 악궁 확장에 대한 단계적인 이동을 위한 시뮬레이션 하여 단계별 악궁 확장 장치에 대한 구조를 형성하는 단계; 및 상기 시뮬레이션에 의해 확보된 단계별 악궁 확장 장치에 대한 구조를 3D 프린터로 전송하여 악궁 확장 장치를 출력하는 단계를 포함하며, 상기 악궁 확장 장치는 상악 또는 하악에 밀접하게 위치하는 고정부; 및 상기 고정부에 결합되며, 치아와 잇몸의 경계에 접하도록 형성되는 확장부를 포함할 수 있다. According to another embodiment of the present invention, a method for manufacturing a maxillary expansion device includes the steps of: obtaining a three-dimensional image of an oral cavity using a 3D scanner; using the image, forming a structure for a maxillary expansion device by simulating stepwise movement for maxillary expansion through a computer program; and transmitting the structure for the maxillary expansion device obtained by the simulation to a 3D printer to output the maxillary expansion device. The maxillary expansion device may include a fixing part closely positioned on the upper jaw or the lower jaw; and an extension part coupled to the fixing part and formed to be in contact with a boundary between teeth and gums.
상기 컴퓨터 프로그램은 시중에 판매되는 프로그램을 이용하는 것으로, 악궁의 확장 정도를 단계별로 제공하며, 이에 맞는 악궁 확장 장치의 구조를 도출할 수 있다. The above computer program uses a commercially available program, provides the degree of expansion of the arch in stages, and can derive the structure of a corresponding arch expansion device.
상기 도출된 악궁 확장 장치에 대한 구조 정보를 3D 프린터로 전송하여, 이를 이용하여 본 발명의 악궁 확장 장치를 출력할 수 있다. The structural information for the above-described arch expansion device can be transmitted to a 3D printer, and the arch expansion device of the present invention can be printed using the same.
상기 본 발명의 일 실시예에 따른 악궁 확장 장치는 도 15와 같은 형상으로 출력될 수 있다. 상기 도 15는 본 발명의 악궁 확장 장치에 대한 일 실시예로, 상악에 사용하기 위한 것을 예시한 것이다. The arch expansion device according to one embodiment of the present invention may be output in a shape as shown in Fig. 15. Fig. 15 illustrates one embodiment of the arch expansion device of the present invention, and is for use in the upper jaw.
도 16에 나타낸 바와 같이, 입 천정에 완전히 밀착시켜 사용할 수 있으며, 치아와 잇몸의 경계부에 접하도록 위치시킬 수 있다. 상기 악궁 확장 장치는, 앞서 설명한 바와 같이 형상 기억 고분자의 특성을 이용하여, 단계별로 악궁의 확장 효과를 나타낼 수 있다. As shown in Fig. 16, it can be used in complete contact with the roof of the mouth, and can be positioned so as to be in contact with the boundary between the teeth and gums. As described above, the above-mentioned dental arch expansion device can exhibit the effect of expanding the dental arch in stages by utilizing the characteristics of shape memory polymers.
또한, 본 발명의 악궁 확장 장치는, 투명 교정 장치와 함께 사용이 가능하다. 도 17에 나타낸 바와 같이, 투명 교정 장치를 함께 사용하여, 악궁의 확장 과정에서 치아의 형태가 변형되는 것을, 투명 교정 장치를 통해 방지할 수 있으며, 악궁 확장과 동시에 치아 교정이 가능하다. In addition, the dental arch expansion device of the present invention can be used together with a transparent orthodontic device. As shown in Fig. 17, by using the transparent orthodontic device together, the shape of the teeth can be prevented from being deformed during the dental arch expansion process through the transparent orthodontic device, and teeth can be corrected simultaneously with the dental arch expansion.
상기 도 17과 같은 사용 상태로 사용이 가능함은, 본 발명의 악궁 확장 장치가 3D 스캐너를 이용하여 환자의 구강에 대한 정보를 획득하고, 이를 이용하여 3D 프린터로 맞춤형으로 제조됨에 따라 가능하다. The use in the usage state as shown in the above Fig. 17 is possible because the dental arch expansion device of the present invention obtains information about the patient's oral cavity using a 3D scanner and is custom-made using a 3D printer.
제조예 1Manufacturing example 1
3D 프린팅용 광경화형 올리고머의 제조Preparation of photocurable oligomers for 3D printing
아이소보닐 아크릴레이트(Isobornyl acrylate)를 용매로 사용하고, 폴리프로필렌 글리콜, 사이클로헥산디메탄올(Cyclohexanedimethanol) 및 BHT를 넣고 10 내지 200rpm으로 10 내지 50℃에서 교반하고, 아이소포론 다이이소시아네이트(Isophorone diisocyanate)를 넣고 동일 온도 조건하에서 교반 속도를 50 내지 200rpm 변화시켜 교반하였다. 이후 HEMA를 넣고 50 내지 250℃에서 150 내지 500rpm으로 교반하여 올리고머를 제조하였다. Isobornyl acrylate was used as a solvent, and polypropylene glycol, cyclohexanedimethanol, and BHT were added, stirred at 10 to 200 rpm at 10 to 50°C, then isophorone diisocyanate was added and stirred at a stirring speed of 50 to 200 rpm under the same temperature conditions. After that, HEMA was added, stirred at 150 to 500 rpm at 50 to 250°C to produce an oligomer.
상기 반응에 의해 생성되는 중간체 화합물은 하기와 같다:The intermediate compounds produced by the above reaction are as follows:
[규칙 제91조에 의한 정정 08.03.2024]
[Correction under Rule 91 08.03.2024]
상기 중간체 화합물을 하기 모노머와 반응시켰다:The above intermediate compound was reacted with the following monomer:
[규칙 제91조에 의한 정정 08.03.2024]
[Correction under Rule 91 08.03.2024]
상기 중간체 화합물을 반응시켜 최종적으로 생성된 올리고머는 하기와 같다:The oligomer finally produced by reacting the above intermediate compounds is as follows:
[규칙 제91조에 의한 정정 08.03.2024]
[Correction under Rule 91 08.03.2024]
상기 제조예 1의 올리고머에 대한 GPC 분석 결과는 도 5와 같다. 또한, NMR 분석 결과는 도 6과 같다. The GPC analysis results for the oligomer of the above Manufacturing Example 1 are as shown in Fig. 5. In addition, the NMR analysis results are as shown in Fig. 6.
제조예 2Manufacturing example 2
상기 제조예 1과 동일한 방법으로 올리고머를 제조하였으나, 반응 시 모노머를 달리하였다. 제조된 올리고머는 하기와 같다:An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction. The prepared oligomer is as follows:
[규칙 제91조에 의한 정정 08.03.2024]
[Correction under Rule 91 08.03.2024]
상기 제조예 2의 올리고머에 대한, GPC 분석 결과는 도 7과 같다. 또한, NMR 분석 결과는 도 8과 같다. The GPC analysis results for the oligomer of the above Manufacturing Example 2 are as shown in Fig. 7. In addition, the NMR analysis results are as shown in Fig. 8.
제조예 3Manufacturing example 3
상기 제조예 1과 동일한 방법으로 올리고머를 제조하였으나, 반응 시 모노머를 달리하였다. 제조된 올리고머는 하기와 같다:An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction. The prepared oligomer is as follows:
[규칙 제91조에 의한 정정 22.07.2024]
[Correction under Rule 91 22.07.2024]
상기 제조예 3의 올리고머에 대한, GPC 분석 결과는 도 9와 같다. 또한, NMR 분석 결과는 도 10과 같다.The GPC analysis results for the oligomer of the above Manufacturing Example 3 are as shown in Fig. 9. In addition, the NMR analysis results are as shown in Fig. 10.
제조예 4Manufacturing example 4
상기 제조예 1과 동일한 방법으로 올리고머를 제조하였으나, 반응 시 모노머를 달리하였다. 제조된 올리고머는 하기와 같다:An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction. The prepared oligomer is as follows:
[규칙 제91조에 의한 정정 22.07.2024]
[Correction under Rule 91 22.07.2024]
상기 제조예 4의 올리고머에 대한, GPC 분석 결과는 도 11과 같다. 또한, NMR 분석 결과는 도 12와 같다.The GPC analysis results for the oligomer of the above Manufacturing Example 4 are as shown in Fig. 11. In addition, the NMR analysis results are as shown in Fig. 12.
제조예 5Manufacturing example 5
상기 제조예 1과 동일한 방법으로 올리고머를 제조하였으나, 반응 시 모노머를 달리하였다. 제조된 올리고머는 하기와 같다:An oligomer was prepared using the same method as in Manufacturing Example 1, but the monomer was changed during the reaction. The prepared oligomer is as follows:
[규칙 제91조에 의한 정정 22.07.2024]
[Correction under Rule 91 22.07.2024]
상기 제조예 5의 올리고머에 대한, GPC 분석 결과는 도 13과 같다. 또한, NMR 분석 결과는 도 14와 같다.The GPC analysis results for the oligomer of the above Manufacturing Example 5 are as shown in Fig. 13. In addition, the NMR analysis results are as shown in Fig. 14.
상기 제조예 1 내지 5의 올리고머에 대한 분석 결과를 정리한 결과는 하기 표 1과 같다:The results of the analysis of the oligomers of the above manufacturing examples 1 to 5 are summarized in Table 1 below:
| 제조예 1Manufacturing example 1 | 제조예 2Manufacturing example 2 | 제조예 3Manufacturing example 3 | 제조예 4Manufacturing example 4 | 제조예 5Manufacturing example 5 | ||
| GPCGPC | MnMn | 41794179 | 41024102 | 16631663 | 47674767 | 26912691 |
| MwMw | 69446944 | 67636763 | 78557855 | 75917591 | 37033703 | |
| PDIPDI | 1.681.68 | 1.651.65 | 1.681.68 | 1.591.59 | 1.381.38 | |
| NMRNMR |
A (6.44)A (6.44) |
OO | OO | OO | OO | OO |
|
B (5.89)B (5.89) |
OO | OO | OO | OO | OO | |
|
C (5.61)C (5.61) |
O (39.0)O (39.0) |
O (39.3)O (39.3) |
O (9.3)O (9.3) |
O (22.1)O (22.1) |
XX | |
|
D (4.91)D (4.91) |
O (87.9)O (87.9) |
O (89.6)O (89.6) |
O (77.6)O (77.6) |
O (86.4)O (86.4) |
O (61.0)O (61.0) |
|
|
E (6.48)E (6.48) |
XX | XX |
O (16.1)O (16.1) |
XX |
O (22.3)O (22.3) |
|
| F(6.49)F(6.49) | XX | XX | OO | XX | OO | |
| G(3.41)G(3.41) | OO | OO | OO | OO | OO | |
실험예 1Experimental Example 1
물리적 특성 확인Check physical properties
상기 제조예 1 내지 5의 올리고머에 대한 점도를 측정하고, 이를 3D 프린팅 후 기계적 물성을 측정하였다. The viscosity of the oligomers of the above manufacturing examples 1 to 5 was measured, and the mechanical properties were measured after 3D printing.
기계적 물성을 측정하기 위해, 상기 제조예 1 내지 5의 올리고머, 하기 화학식 7로 표시되는 화합물 및 하기 화학식 8로 표시되는 화합물을 1:1:1의 중량 비율로 혼합하고, 상기 혼합물 100 중량부에 대해 DPPO를 1중량부로 혼합하여 고분자 조성물로 제조하고 이를 3D 프린터에 넣고 시편으로 제조하였다:In order to measure the mechanical properties, the oligomers of the above Preparation Examples 1 to 5, the compound represented by the following Chemical Formula 7, and the compound represented by the following Chemical Formula 8 were mixed in a weight ratio of 1:1:1, and 1 part by weight of DPPO was mixed with 100 parts by weight of the mixture to prepare a polymer composition, which was then placed in a 3D printer to prepare a specimen:
[화학식 7][Chemical formula 7]
[화학식 8][Chemical formula 8]
구체적으로, 굴곡 강도는 ISO 20795-2와 ISO 10477 기준으로 진행하였으며, 인장 강도는 ASTM D638로 진행하였다.Specifically, the flexural strength was tested according to ISO 20795-2 and ISO 10477 standards, and the tensile strength was tested according to ASTM D638.
| 제조예 1Manufacturing example 1 | 제조예 2Manufacturing example 2 | 제조예 3Manufacturing example 3 | 제조예 4Manufacturing example 4 | 제조예 5Manufacturing example 5 | ||
| Batch SizeBatch Size | 50L50L | 50L50L | 50L50L | 50L50L | 50L50L | |
|
블렌딩 및 3D 프린팅 출력 이후 기계적 물성Blending and 3D Printing Output After mechanical properties |
굴곡강도 (20795-2 시편, MPa)Flexural strength (20795-2 Psalm, MPa) |
171171 | 162162 | 155155 | 163163 | 150150 |
|
굴곡탄성 (20795-2 시편, MPa)Flexural elasticity (20795-2 Psalm, MPa) |
39393939 | 38073807 | 38003800 | 36553655 | 35943594 | |
| 굴곡강도(10477 시편, MPa)Flexural strength (10477 specimens, MPa) | 146146 | 122122 | 162162 | 158158 | 143143 | |
| 인장강도(D 638, MPa)Tensile strength (D 638, MPa) | 109109 | 102102 | 115115 | 113113 | 108108 | |
| 연신율(D 638, %)Elongation (D 638, %) | 3.93.9 | 3.03.0 | 7.67.6 | 6.56.5 | 7.77.7 | |
| 점도(psi)Viscosity (psi) | 28802880 | 29502950 | 22202220 | 23802380 | 23802380 | |
상기 제조예 1 내지 5의 올리고머를 이용하여 제조한 시편은 우수한 기계적 물성을 나타냄을 확인하였으며, 적절한 점도를 통해, 3D 프린터를 이용하여 출력이 가능함을 확인하였다. It was confirmed that the specimens manufactured using the oligomers of the above manufacturing examples 1 to 5 exhibited excellent mechanical properties, and it was confirmed that printing using a 3D printer was possible through appropriate viscosity.
다만, 악궁 확장 효과를 나타내기 위해선, 굴곡 강도가 150 MPa 이상이고, 인장강도가 110MPa 이상이여야 되는 점에서, 상기 제조예 3 및 4의 올리고머를 이용한 광경화형 조성물이 악궁 확장 장치로 이용이 가능하며, 다른 제조예들의 경우는 악궁 확장 장치로 사용 시, 형상 변형에 의한 악궁 확장 효과가 미비할 수 있다. However, in order to exhibit the arch expansion effect, the flexural strength must be 150 MPa or more and the tensile strength must be 110 MPa or more, so the photocurable composition using the oligomer of Manufacturing Examples 3 and 4 can be used as an arch expansion device, while in the case of other Manufacturing Examples, the arch expansion effect due to shape deformation may be insufficient when used as an arch expansion device.
실험예 2Experimental example 2
악궁 확장 장치의 제조 Manufacturing of the Arch Expansion Device
실험예 1의 올리고머, 모노머 및 광개시제를 혼합하여 제조한 고분자 조성물을 3D 프린터에 넣고 악궁 확장 장치로 출력하였다. A polymer composition prepared by mixing the oligomer, monomer, and photoinitiator of Experimental Example 1 was placed in a 3D printer and printed using a filament expansion device.
형상 기억 특성을 확인하기 위해, 열에 의한 변형 및 형상 복원 여부에 대해 실험을 진행하였다. To verify the shape memory characteristics, experiments were conducted to determine whether deformation and shape restoration occurred due to heat.
실험 방법은 50 내지 100℃의 물에 담근 후, 외력을 가하여 형태를 변형시키고, 변형된 형태가 고정되는지 여부 및 변형된 형태에서 다시 40 내지 80℃ 사이의 물에 담근 후 20 내지 30℃의 조건 하에서 원래의 형태로 복원하는지 여부를 확인하였다. The experimental method involved immersing the sample in water at 50 to 100°C, applying an external force to deform the shape, and checking whether the deformed shape was fixed, and whether the sample was restored to its original shape under conditions of 20 to 30°C after being immersed in water at a temperature of 40 to 80°C again.
최초 40 내지 80℃의 물에 담근 후, 외력에 의해 형상이 변형되어 변형된 형상이 고정되고, 다시 50 내지 100℃의 물에 담근 후 20 내지 30℃에서 형상이 원래대로 복원되는 경우는 O로 표시하였다. If the shape is deformed by an external force after being immersed in water at 40 to 80°C for the first time and the deformed shape is fixed, and then the shape is restored to the original shape at 20 to 30°C after being immersed in water at 50 to 100°C again, it is marked as O.
| 제조예1Manufacturing example 1 | 제조예 2Manufacturing example 2 | 제조예 3Manufacturing example 3 | 제조예 4Manufacturing example 4 | 제조예 5Manufacturing example 5 | |
| 형상 기억 특성Shape memory properties | OO | OO | OO | OO | OO |
상기 표 3에 따르면, 일반적으로 쉽게 접근이 가능한 정수기의 온수 온도(50 내지 70℃)에 넣은 후 형태의 변형이 가능하고 변형된 형태로의 고정이 가능하였으며, 다시 온수 온도의 물에 넣고 외력을 가하지 않으면 원래의 형태로 복원됨을 확인하였다. According to Table 3 above, it was confirmed that the shape could be deformed and fixed in the deformed shape after being placed in hot water temperature (50 to 70℃) of a water purifier that is generally easily accessible, and that it could be restored to its original shape if placed in water at hot water temperature again and no external force was applied.
상기와 같은 형상 기억 특성을 이용하여, 악궁 확장 장치로 제조 시, 환자의 상악 또는 하악에 끼울 때는, 온수에 넣고 유연한 상태에서 사용하여, 환자가 큰 고통을 느끼지 않고, 상악 또는 하악에 완전히 밀착시켜 끼울 수 있다. 이후, 체온에 의해 서서히 형상이 원래의 형태로 변형이 되고, 원 형상은 앞서 설명한 바와 같이 컴퓨터 프로그램에 의해, 단계적으로 확장된 상악 또는 하악의 상태에 해당되는 바, 미는 힘이 작용하여, 악궁 확장 효과를 발휘할 수 있다. By utilizing the shape memory characteristics as described above, when manufacturing a maxillary expansion device, when fitted into a patient's maxilla or mandible, it can be used in a flexible state by putting it in warm water, so that the patient can fit it completely into the maxilla or mandible without feeling much pain. After that, the shape is gradually transformed into the original shape by body temperature, and the original shape corresponds to the state of the maxilla or mandible that has been gradually expanded by the computer program as described above, and a pressing force is applied to exert the maxillary expansion effect.
이상에서 본 발명의 바람직한 실시예에 대하여 상세하게 설명하였지만 본 발명의 권리범위는 이에 한정되는 것은 아니고 다음의 청구범위에서 정의하고 있는 본 발명의 기본 개념을 이용한 당업자의 여러 변형 및 개량 형태 또한 본 발명의 권리범위에 속하는 것이다.Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims also fall within the scope of the present invention.
본 발명은 악궁 확장 장치 및 이의 제조 방법에 관한 것이다.The present invention relates to a dental arch expansion device and a method for manufacturing the same.
Claims (8)
- 상악 또는 하악에 밀접하게 위치하는 고정부; 및A fixed part closely positioned on the maxilla or mandible; and상기 고정부에 결합되며, 치아와 잇몸의 경계에 접하도록 형성되는 확장부를 포함하는It is connected to the above fixed part and includes an extension formed to contact the border between the teeth and gums.악궁 확장 장치.Archery extension device.
- 제1항에 있어서, In the first paragraph,상기 고정부는 상악의 경구개 및 연구개의 형상과 대응되도록 형성되어, 상기 경구대 및 연구개에 밀착하여 위치하며,The above fixed part is formed to correspond to the shape of the hard palate and soft palate of the maxilla, and is positioned in close contact with the hard palate and soft palate.상기 확장부는 상악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해지는The above expansion part is formed to contact the border between the teeth and gums of the upper jaw, and is symmetrical in the left and right directions based on the center of the above fixing part, so that force is applied to expand the arch.악궁 확장 장치. Archery extension device.
- 제1항에 있어서,In the first paragraph,상기 고정부는 혀 아래의 구강 바닥에 밀착하여 위치하며,The above fixed part is positioned in close contact with the floor of the mouth under the tongue,상기 확장부는 하악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해지는The above expansion part is formed to contact the border between the teeth and gums of the lower jaw, and is symmetrical in the left and right directions based on the center of the above fixing part, so that force is applied to expand the arch.악궁 확장 장치. Archery extension device.
- 제1항에 있어서,In the first paragraph,상기 확장부는 구강 내측으로 위치한 치아를 외측으로 교정하기 위한 치아 교정부를 추가로 포함하는The above extension part additionally includes a tooth correction part for correcting teeth positioned inside the oral cavity to the outside.악궁 확장 장치.Archery extension device.
- [규칙 제91조에 의한 정정 08.03.2024]
제1항에 있어서,
상기 악궁 확장 장치는 하기 화학식 1로 표시되는 3D 프린팅용 광경화형 올리고머;
모노머;
광개시제; 및
안정제를 포함하는 3D 프린팅용 광경화형 조성물로, 3D 프린터를 이용하여 출력되는
악궁 확장 장치:
[화학식 1]
[화학식 2]
[화학식 3]
[화학식 4]
[화학식 5]
[화학식 6]
여기서,
n은 1 내지 100의 정수이며,
m은 1 내지 50의 정수이며,
A, B, C 및 D는 서로 동일하거나 상이하며, 각각 독립적으로 화학식 2 내지 6으로 표시되는 화합물로 이루어진 군으로부터 선택되는 반복단위이며,
a, b, c 및 d는 서로 동일하거나 상이하며, 각각 독립적으로 1 내지 30의 정수이며,
R1 및 R2는 서로 동일하거나 상이하며, 각각 독립적으로 수소, 중수소, 치환 또는 비치환된 탄소수 1 내지 30의 알킬기, 치환 또는 비치환된 탄소수 2 내지 30의 알케닐기, 치환 또는 비치환된 탄소수 2 내지 30의 알키닐기, 치환 또는 비치환된 탄소수 6 내지 30의 아릴기 및 치환 또는 비치환된 탄소수 1 내지 30의 헤테로아릴기로 이루어진 군으로부터 선택될 수 있다. [Correction under Rule 91 08.03.2024]
In the first paragraph,
The above-mentioned arch expansion device comprises a photocurable oligomer for 3D printing represented by the following chemical formula 1;
monomer;
Photoinitiator; and
A photocurable composition for 3D printing containing a stabilizer, which is printed using a 3D printer.
Archery Extension Device:
[Chemical Formula 1]
[Chemical formula 2]
[Chemical Formula 3]
[Chemical Formula 4]
[Chemical Formula 5]
[Chemical formula 6]
Here,
n is an integer from 1 to 100,
m is an integer from 1 to 50,
A, B, C and D are identical or different from each other and are repeating units each independently selected from the group consisting of compounds represented by chemical formulas 2 to 6,
a, b, c and d are the same or different from each other and are each independently an integer from 1 to 30,
R 1 and R 2 are the same or different, and can each independently be selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms. - 3D 스캐너를 이용하여 구강에 대한 3차원 영상을 확보하는 단계;A step of obtaining a three-dimensional image of the oral cavity using a 3D scanner;상기 영상을 이용하여 컴퓨터 프로그램을 통해, 악궁 확장에 대한 단계적인 이동을 위한 시뮬레이션 하여 단계별 악궁 확장 장치에 대한 구조를 형성하는 단계; 및A step of forming a structure for a step-by-step arch expansion device by simulating step-by-step movement for arch expansion through a computer program using the above image; and상기 시뮬레이션에 의해 확보된 단계별 악궁 확장 장치에 대한 구조를 3D 프린터로 전송하여 악궁 확장 장치를 출력하는 단계를 포함하며,It includes a step of transmitting the structure of the step-by-step arch expansion device obtained by the above simulation to a 3D printer to output the arch expansion device.상기 악궁 확장 장치는 상악 또는 하악에 밀접하게 위치하는 고정부; 및The above dental arch expander has a fixed part positioned closely to the upper or lower jaw; and상기 고정부에 결합되며, 치아와 잇몸의 경계에 접하도록 형성되는 확장부를 포함하는It is connected to the above fixed part and includes an extension formed to contact the border between the teeth and gums.악궁 확장 장치의 제조 방법. A method for manufacturing a bow expansion device.
- 제6항에 있어서, In Article 6,상기 고정부는 상악의 경구개 및 연구개의 형상과 대응되도록 형성되어, 상기 경구대 및 연구개에 밀착하여 위치하며,The above fixed part is formed to correspond to the shape of the hard palate and soft palate of the maxilla, and is positioned in close contact with the hard palate and soft palate.상기 확장부는 상악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해지는The above expansion part is formed to contact the border between the teeth and gums of the upper jaw, and is symmetrical in the left and right directions based on the center of the above fixing part, so that force is applied to expand the arch.악궁 확장 장치. Archery extension device.
- 제6항에 있어서,In Article 6,상기 고정부는 혀 아래의 구강 바닥에 밀착하여 위치하며,The above fixed part is positioned in close contact with the floor of the mouth under the tongue,상기 확장부는 하악의 치아와 잇몸의 경계부에 접하도록 형성되며, 상기 고정부의 중심을 기준으로 좌우 방향으로 대칭되어, 악궁의 확장을 위한 힘이 가해지는The above expansion part is formed to contact the border between the teeth and gums of the lower jaw, and is symmetrical in the left and right directions based on the center of the above fixing part, so that force is applied to expand the arch.악궁 확장 장치.Archery extension device.
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| KR1020230021246A KR102578482B1 (en) | 2023-02-17 | 2023-02-17 | Maxillary skeletal expander and manufacturing method thereof |
| KR10-2023-0021246 | 2023-02-17 |
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|---|---|---|---|---|
| KR20190057639A (en) * | 2017-11-20 | 2019-05-29 | 장영진 | Maxillary skeletal expender for orthodontics and orthodontics method |
| KR20200046153A (en) * | 2018-10-16 | 2020-05-07 | 주식회사 그래피 | Photocurable composition for 3D printer for the manufacture of transparent aligner |
| KR20210056757A (en) * | 2019-11-11 | 2021-05-20 | 주식회사 바이오머테리얼즈코리아 | Exchangable Maxillary Skeletal Expander |
| KR20210063640A (en) * | 2019-11-25 | 2021-06-02 | 오스템임플란트 주식회사 | method and Apparatus for generating Ideal arch for orthodontic treatment |
| JP2022135020A (en) * | 2021-03-04 | 2022-09-15 | ＳｈｅｅｐＭｅｄｉｃａｌ株式会社 | orthodontic appliance |
| KR102578482B1 (en) * | 2023-02-17 | 2023-09-14 | 주식회사 그래피 | Maxillary skeletal expander and manufacturing method thereof |
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| KR102226747B1 (en) | 2019-09-03 | 2021-03-10 | 이요섭 | Maxillary Skeletal Expander |
| JP2022108314A (en) * | 2021-01-13 | 2022-07-26 | 医療法人はなだ歯科クリニック | Base correction device and base interval adjusting tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190057639A (en) * | 2017-11-20 | 2019-05-29 | 장영진 | Maxillary skeletal expender for orthodontics and orthodontics method |
| KR20200046153A (en) * | 2018-10-16 | 2020-05-07 | 주식회사 그래피 | Photocurable composition for 3D printer for the manufacture of transparent aligner |
| KR20210056757A (en) * | 2019-11-11 | 2021-05-20 | 주식회사 바이오머테리얼즈코리아 | Exchangable Maxillary Skeletal Expander |
| KR20210063640A (en) * | 2019-11-25 | 2021-06-02 | 오스템임플란트 주식회사 | method and Apparatus for generating Ideal arch for orthodontic treatment |
| JP2022135020A (en) * | 2021-03-04 | 2022-09-15 | ＳｈｅｅｐＭｅｄｉｃａｌ株式会社 | orthodontic appliance |
| KR102578482B1 (en) * | 2023-02-17 | 2023-09-14 | 주식회사 그래피 | Maxillary skeletal expander and manufacturing method thereof |
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