KR20220072370A - Moldable preformed dental prosthesis having tooth shape and Manufacturing method thereof - Google Patents

Abstract

The deformable tooth-shaped prosthesis 100 provided by being molded in advance of the present invention has an overall appearance of a dental crown made of a non-hardening synthetic resin material so that the external shape can be easily deformed when a physical force is applied, and can be cured when desired. And, it is characterized in that the attachment portion 101 of the intaglio to be attached to the deletion portion of the abutment is formed.

Description

A deformable tooth-shaped prosthesis provided pre-molded and a manufacturing method thereof {Moldable preformed dental prosthesis having tooth shape and Manufacturing method thereof}

The present invention relates to a dental prosthesis, and specifically, as it is pre-formed in the shape of a general tooth, it can be easily physically deformed by the operator to fit the surgical environment such as surrounding teeth and gums in the patient's oral cavity, so that it can be customized artificially at the operation site It relates to a deformable tooth-shaped prosthesis provided in a pre-molded form that can be completed with teeth.

When a part or all of a tooth is missing, it is usually treated with an artificial tooth made of a ceramic material such as porcelain or zirconia, a resin mixture, or a metal material. At this time, if the natural tooth is damaged, the outside of the natural tooth is removed and an artificial tooth is placed on it to protect the natural tooth. On the other hand, when there is no natural tooth, an implant abutment that serves as an abutment is placed and an artificial tooth is attached thereon.

The final artificial teeth attached in this way must be made to be used for a long time, and the production of these final artificial teeth usually takes close to 10 days. Therefore, the operator attaches temporary artificial teeth that are temporarily used during the period when the final artificial teeth are made to the patient, if desired, so that the patient's life is not uncomfortable during the period.

The technology for making such temporary teeth, which is widely used in the field, is introduced as the prior art and invention technology in 「Temporary false teeth using veneer shell plate」 of Korean Patent Application Laid-Open No. 10-2005-0005976. In order to better understand the technical background of the present invention, the prior art is described as prior art 1 and the invention technique is referred to as prior art 2 with reference to the drawings.

Prior art 1, as shown in Figure 1, a few days before the dental abutment (10) is shaved to make a plaster model of the patient's teeth to be prosthetic. Then, as shown in Fig. 2, on this plaster model, the missing abutment 10 is shaved similarly to the oral cavity, and then the dental immediate curable resin mixture (resin) is covered to cover the missing tooth part and the shaved abutment 15. As shown in FIG. 3, when the mixture hardens, it is removed from the abutment 15, and the temporary false teeth 20 are completed by well-trimming and polishing close to the actual tooth shape. As shown in FIG. 4, the completed temporary prosthesis 20 is transferred to the sharp abutment 15 of the actual patient and used temporarily until the prosthesis is completed.

In the prior art 2, as shown in FIG. 5, the front part of the tooth to be a value tooth is formed in advance with a veneer shell plate 40 made of a resin material. At this time, the veneer shell plate 40 has a plurality of veneer shells 41 connected and the seam 42 is thinner. The veneer shell plate (40). As shown in FIG. 6 , the veneer shell plate 45 is engraved and used as much as the user wants at the job site. As shown in FIG. 7 , the dental immediate curable resin mixture 46 is covered on the inside of the tooth to adhere to the veneer shell plate 40 , and when the mixture 46 is cured, the temporary value is completed.

Although it is described that the process of the prior art 2 is simpler and the time is reduced compared to the prior art 1 in manufacturing temporary teeth, the veneer shell plate is standardized, so it was difficult to perform additional molding in the field according to the oral situation of the patient. , in addition, it was difficult and required a lot of time to connect with the veneer shell plate by adding a curable resin mixture to the inside. For this reason, prior art 1 is more widely used than prior art 2 in the field.

Korean Patent Laid-Open Patent No. 10-2005-0005976 「Temporary value using veneer shell plate」

The present invention has been devised to solve the problems of the prior art described above, and an object of the present invention is to physically transform an artificial tooth suitable for the oral condition of a patient to be manufactured at the operation site with a simple and short-time operation of the operator. It is to provide a prosthesis in the shape of a tooth as possible in advance.

In order to achieve the above-described object of the present invention, the first embodiment of the present invention provides an overall appearance of a dental crown made of a non-curing synthetic resin material so that the external shape can be easily deformed when a physical force is applied, and can be cured when desired. It provides a deformable tooth-shaped prosthesis provided pre-molded, characterized in that an intaglio attachment portion to be attached to the preparation portion of the abutment is formed.

Here, the synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl-4-methylphenol , and is characterized in that it is composed of various combinations such as ethyl 4-dimethylamino benzoate.

In addition, curing is another feature that includes curing by photocuring, thermal curing, or chemically active reaction.

The second embodiment of the present invention has the overall appearance of a tooth crown made of an uncured synthetic resin material so that the external shape can be easily deformed when a physical force is applied, and can be cured when desired, and a screw hole is formed in the center. , It provides a deformable tooth-shaped prosthesis provided pre-molded, characterized in that the abutment is fixedly connected to the lower end of the screw hole.

Here, the synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl-4-methylphenol , and is characterized in that it is composed of various combinations such as ethyl 4-dimethylamino benzoate.

In addition, the abutment is made of a metal material or a biocompatible non-metal material, and the handle used to connect the abutment to the implant is further provided to be inserted into the screw hole, and the abutment has a tapered column shape with a portion exposed to the outside, Another feature is that curing includes curing by photocuring, thermal curing, or chemically active reaction, and the like.

The third embodiment of the present invention is characterized in that it has the overall appearance of a dental crown made of an uncured synthetic resin material so that the external shape can be easily deformed when a physical force is applied, and can be cured when desired, and is used as a pontic for a bridge It provides a deformable tooth-shaped prosthesis provided by being pre-molded.

Here, the synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl-4-methylphenol , and is characterized in that it is composed of various combinations such as ethyl 4-dimethylamino benzoate.

In addition, the curing is another feature that includes curing by photocuring, thermal curing, or chemically active reaction.

According to the present invention, since the prosthesis of the entire tooth shape is preformed, the artificial tooth can be manufactured with a much easier working process and shorter working time than in the prior art.

In addition, since the shape of the prosthesis is easily deformed by the operator's light physical force, it is possible to more easily and quickly manufacture artificial teeth that better suit the oral conditions of the patient desired by the operator.

In addition, since prostheses are mass-produced in factories, the cost required for manufacturing artificial teeth can be greatly reduced, and the amount used can be significantly increased.

1 is an exemplary view of a plaster model simulating a tooth;
Figure 2 is an exemplary view made by processing the abutment on the plaster model of Figure 1;
Figure 3 is an exemplary view of a temporary value completed using the gypsum model of Figure 2;
Figure 4 is an example of attaching the completed temporary value of Figure 3 to the plaster model of Figure 1;
5 is an exemplary view of a veneer shell plate to be used as a value;
6 is an exemplary view of the veneer shell plate of FIG. 5 engraved for use;
7 is an exemplary view of a temporary prosthesis completed by attaching the carved veneer shell plate of FIG. 6 to a tooth;
8 is a schematic view of a prosthesis according to a first embodiment of the present invention;
9 is a view showing, for example, the state in which the prosthesis of FIG. 8 is attached to a natural tooth;
10 is a schematic view of a prosthesis according to a second embodiment of the present invention;
11 is a view showing, for example, a state in which the prosthesis of FIG. 10 is provided to an operator;
12 and 13 are views illustrating, for example, a state in which the prosthesis of FIG. 10 is attached to an implant;
14 is a schematic view of a prosthesis according to a third embodiment of the present invention; and
FIG. 15 is a view showing, for example, the state in which the prosthesis of FIG. 14 is attached to the bridge as a ponti.

Hereinafter, the deformable tooth-shaped prosthesis provided in advance of the present invention will be described in detail with reference to the accompanying drawings. The resin material used as the main material of the prosthesis applied to the present invention is "Method for manufacturing a dental implant placement guide, manufacturing method of the Korean Patent Application No. 10-2019-0055759" filed by the present applicant with the Korean Intellectual Property Office on May 13, 2019 The impression resin applied to the 'preparatory guide and guide tray for

The prosthesis of the present invention is made of a synthetic resin material before it is fully cured, and is easily deformed by physical force. In addition, each tooth can be composed of a short and long one, a narrow and wide one, and to minimize deformation in the oral cavity, it has been developed in three main forms according to its use, and here they are in the first embodiment, the second embodiment, and the third embodiment. Examples were divided and described.

first embodiment

8 and 9, the prosthesis of the present invention according to the first embodiment will be described in detail. The prosthesis of this embodiment can be advantageously used when natural teeth remain and can be made abutment teeth.

As shown in FIG. 8 , the prosthesis 100 of this embodiment has the appearance of the entire tooth, and is formed with an intaglio to be attached to the preparation portion of the abutment.

The prosthesis 100 has a hardness suitable for forming a tooth shape (hard enough not to deform until a suitable physical external force is applied at room temperature), but when a physical force is applied, external deformation is easily and quickly hardened. It is made of synthetic resin material. Curing can be photocuring, thermal curing, or curing by chemically active reaction used

This synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl-4-methylphenol, And it was composed of various combinations such as ethyl 4-dimethylamino benzoate.

A state in which the prosthesis 100 of this embodiment is attached to the abutment is illustrated in FIG. 9 as an example.

As shown in FIG. 9 , the upper part of the 'abutment' was partially removed to form a 'preparation site', and the intaglio attachment part 101 of the prosthesis 100 was attached to the 'preparation site'. At this time, the deletion is made of a size that fits well into the attachment portion 101 .

In this state, the operator sequentially applies force to the outside of the prosthesis 100 according to the surgical environment such as surrounding teeth and gums using a dedicated tool or a general tool to slightly deform or close the antagonist and occlusion corresponding to the antagonist. It can be deformed to achieve proper contact with adjacent teeth, and finally, the desired shape of artificial teeth is created. Thereafter, after hardening by photocuring the artificial tooth of a desired shape, the finished artificial tooth is firmly attached to the 'abutment' using an adhesive.

A part of the prosthesis 100 may be removed or additionally added for deformation.

second embodiment

10 to 13, the prosthesis of the present invention according to the second embodiment will be described in detail. The prosthesis of the present embodiment may be advantageously used when an implant needs to be placed because there are no natural teeth remaining.

As shown in FIG. 10 , the prosthesis 200 of this embodiment has an overall tooth shape, and a screw hole 201 is formed in the center. In addition, an abutment 202 made of a metal material or a biocompatible non-metal material is fixedly connected to the lower end of the prosthesis 200 . At this time, the upper portion of the abutment 202 is fitted with the prosthesis 200 under the hole 201, and the lower portion thereof is exposed to the outside.

The prosthesis 200 has a hardness suitable for forming a tooth shape (hard enough not to deform until a suitable physical external force is applied at room temperature), but when a physical force is applied, external deformation is easily and quickly hardened. It is made of synthetic resin material. Although curing by photocuring, thermal curing, or chemically active reaction is possible, it is possible to efficiently cure in or outside the oral cavity in a short time using photocuring equipment that is generally widely used in a limited procedure site. Paint is mainly used.

This synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl-4-methylphenol, And it was composed of various combinations such as ethyl 4-dimethylamino benzoate.

The prosthesis 200 of FIG. 10 is provided to the operator in a form in which the handle is fitted as shown in FIG. 11 for convenience of use.

As shown in FIG. 11 , the handle 203 has a shape similar to that of a driver widely used in dentistry so as to be easily manipulated by picking it up with a finger. The reason for using the handle part 203 is to make it easier to insert into the implant because it is connected to the abutment 202 in the prosthesis 200 by friction, etc., and to be able to fasten the connecting screw, and also the prosthesis 200 This is to maintain the shape of the screw hole without being deformed even in the case of deformation.

A state in which the prosthesis 200 of this embodiment is attached to an implant placed in a patient's jawbone is illustrated in FIGS. 12 and 13 for example.

12, the handle 203 provided on the prosthesis 200 is held by the fingers and the abutment 202 is inserted into the 'implant' placed in the jawbone (not shown). At this time, since the abutment 202 mostly has a non-engaged abutment shape that does not have directionality, the prosthesis 200 is positioned only to fit well with the surrounding teeth regardless of the placement direction of the 'implant'. you should do it Occasionally, in the case of a single implant prosthesis, an engaged abutment with directionality can be made to prevent rotation. must be severely deformed.

In this state, the operator uses a dedicated tool or a general tool to sequentially apply force to the outside of the prosthesis 200 to suit the operating environment, such as surrounding teeth and gums, and slightly deform it to finally create the desired shape of the artificial tooth. Thereafter, the desired shape of the artificial tooth is hardened by photocuring it inside or outside the oral cavity.

By manipulating the handle portion 203 of the hardened artificial tooth (prosthesis), the abutment 202 is firmly connected to the 'implant' using a connecting screw (not shown). When this operation is completed, the handle portion 203 is removed, as shown in FIG. 13 .

When the uncured prosthesis 200 is connected to the implant in the gum, the upper middle portion of the prosthesis 200 is relatively deformed than the lower middle portion so that the shape of the lower portion of the prosthesis 200 is not deformed by the shape of the gums. You can make this better. In addition, a part of the prosthesis 200 may be removed or additionally attached to the prosthesis 200 for deformation.

3rd embodiment

14 and 15, the prosthesis of the present invention according to a third embodiment will be described in detail. When a tooth is missing, the treatment of the missing tooth using the surrounding teeth is called a “bridge”, and the portion of the “bridge” hanging from both (artificial) teeth without teeth is called a “pontic”. The prosthesis of this embodiment can be advantageously used for this "pontic".

As shown in FIG. 14 , the prosthesis 300 of the present embodiment has an overall tooth shape.

The prosthesis 300 has a hardness suitable for forming a tooth shape (hard enough not to deform until a suitable external force is applied at room temperature), but when a physical force is applied, external deformation is easily and quickly hardened. It is made of synthetic resin material. Curing can be cured by photocuring, thermal curing, or chemically active reaction used The pontic can be connected to an adjacent prosthesis by additionally using a synthetic resin.

This synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl-4-methylphenol, And it was composed of various combinations such as ethyl 4-dimethylamino benzoate.

A “bridge” to which the prosthesis 300 of this embodiment is applied is illustrated in FIG. 15 as an example. The “bridge” illustrated in FIG. 15 includes the prosthesis 100 attached to the natural tooth described in the first embodiment and the prosthesis 200 attached to the implant described in the second embodiment.

Both sides of the prosthesis 300 were respectively connected to the two prostheses 100 and 200 without placing an implant between the prosthesis 100 attached to the natural tooth and the prosthesis 200 attached to the implant. At this time, first, the prosthesis 300 of FIG. 14 is put between the two prostheses 100 and 200 that have been completed with artificial teeth, and the both sides of the prosthesis 300 are slightly stretched using a dedicated tool or a general tool so that they stick to each other. In order to make this sticking operation easy and stable, it is preferable that the prosthesis 300 is slightly larger than the space formed between the two prostheses 100 and 200 . The prosthesis 300 may be connected to two adjacent prostheses 100 and 200 by adding an adhesive synthetic resin.

In this state, the operator uses this tool to sequentially apply force to the outside of the prosthesis 300 to suit the surgical environment such as surrounding teeth and gums, and slightly deform the artificial tooth shape to finally create the desired shape. Thereafter, the artificial tooth of the desired shape is photocured to harden it.

The materials of the prostheses 100 , 200 , and 300 according to various embodiments of the present invention are made so that they can be manufactured using a mold or a 3D printing machine. In the case of manufacturing using a mold, prostheses suitable for mass production of small types will be mainly manufactured. On the other hand, in the case of manufacturing using a 3D printing machine, the prosthesis will be mainly manufactured for small quantity production of various types.

The present invention makes a ready-made individual dental prosthesis with a material that can be molded, i.e., a soft clay-like material, so that a tooth shape suitable for each tooth number of a human is made in advance with only a few most frequent representative sizes, but can be easily deformed when an external force is applied. put Then, select the size of the prosthesis closest to the size of each oral cavity, install it in the oral cavity, apply a slight external force to contact the adjacent teeth, and close the antagonist to automatically adjust the occlusion to fit the antagonist. That is, by customizing in the oral cavity with a ready-made prosthesis, the most suitable temporary or final prosthesis can be easily and quickly completed with the ready-made prosthesis.

However, in order for the flexible material to be deformed to be hardened in the oral cavity and made into a hard prosthesis, composite resin, which is the most widely used material for dental prostheses, is the best.

The most desirable material is a light-curing synthetic resin (resin) to make the tooth shape in an uncured state, maintain the shape, and then optimize the shape in the oral cavity to be easily cured in the oral cavity. After the light-curing resin is made like hard clay, the shape of each tooth is made into various sizes with it. In order to become a tooth that is easily deformed by external forces, it must be made in a non-light-cured state and stored sealed in a container that does not enter light. When one prosthesis is selected, it is taken out, adjusted in the oral cavity, and then hardened by irradiating light directly in the oral cavity to complete the temporary or final prosthesis.

From the average size of each tooth, the length and mesiodistal diameter of the prosthesis are adjusted and the length and mesiodistal diameter of the prosthesis are measured in the oral cavity to be the closest You can simply select a tooth of the size and install it in the oral cavity, then apply a little force to widen and narrow the †Ÿ tooth, and increase or decrease the length to obtain the optimal prosthesis in a short time. can pay

In the present invention, there is no need to take impressions in the conventional way to make a prosthesis, and there is no need to engrave the shape of individual teeth on the model, cut the prosthesis with a milling machine, or print the prosthesis with a 3D printer. Immediately after tooth preparation, select the ready-made crown of the present invention, place it on the tooth, adjust the shape with a finger or an instrument, or bite the opposing tooth to adjust the occlusion, then light-cure and add another resin to the inside to obtain a precise finish. After finishing the final shape, the prosthesis is completed by bonding the prosthesis using cement on the teeth in the conventional way.

Since the present invention omits all the conventional complex prosthetic manufacturing processes, a temporary or final prosthesis can be placed within 30 minutes after tooth preparation or immediately after implant placement.

Conventional temporary prosthetic manufacturing methods are two types: a direct method and an indirect method. In the direct method, after tooth preparation, a self-curing synthetic resin powder, a polymer, and a liquid monomer are mixed, and an intangible donut stage (clay-shaped) resin is placed on the tooth, waited for self-curing, and taken out. Therefore, skilled machinist labor and a lot of work time are required. The production time per tooth is at least 30 minutes. In the indirect method, after obtaining an impression of the upper and lower teeth before removing the teeth, a model is made and sent to the laboratory, and temporary teeth are created by performing the same work as the direct intraoral method with resin on the model. This also requires a lot of time and qigong labor time.

With the development of digital technology these days, it is possible to design a tooth shape on a computer after an intraoral scan and then print a temporary prosthesis with a 3D printer. However, this technology also requires oral scanning technology and time, design technology and time, and printing time. Therefore, the production time is at least 1 hour.

The present invention is a technology that is completed in 5 to 10 minutes by selecting an appropriate one and achieving intraoral fit and photocuring, since all temporary teeth are already provided and does not require a technician.

This photo-cured resin material can be bonded to each other by adding new resin to the surface after photo-curing and hardening, so it can be easily added to the missing parts in the oral cavity.

Therefore, the present invention is provided in the form of a single tooth, and in the case of a plurality of prosthetic restorations, after each single tooth is placed in the oral cavity, resin is added to each contact portion to be photopolymerized and connected to make a bridging. In this way, a bridge can be manufactured by placing the fantic between the crowns of both abutment teeth, whether natural or implant, and connecting them.

In addition, although the prosthesis of the present invention is provided with a synthetic resin of normal tooth color, a detailed tooth color suitable for each patient can be easily implemented in the oral cavity. In other words, it has the advantage of realizing a sophisticated tooth color by applying a resin emulsion of various colors to the surface and photopolymerizing it after completing it in a suitable final form.

In addition, in the present invention, even when the prosthesis is fractured, it can be repaired by adding a new resin to the fractured portion. Although it is an implant prosthesis, the cement type is provided as a general crown without a screw hole in the center.

The present invention is based on the crown shape of 28 human teeth, and short/long, wide / It is composed with narrow things.

The present invention is also applicable to 20 deciduous teeth. In particular, since infants cannot undergo dental treatment for a long time, they should be covered with nerve-treated teeth with a minimal process. At this time, it is suitable for the treatment of deciduous teeth because it is easy to insert and then light-curing.

In addition, the present invention often prostheses the teeth of damaged animals or prostheses with implants. Even at this time, it is suitable for prosthetic treatment of animal teeth because it can quickly complete the prosthesis of the present invention without the process of removing teeth for dental treatment and prosthesis with a single anesthetic, or planting an implant in a missing tooth area, and taking an impression.

In addition, the present invention can be applied to not only crown restoration covering the entire tooth, but also laminate treatment for dental aesthetics. Linate also removes the labial side of the front teeth, and then goes through an impression taking or oral scanning process to make a thin shell in the shape of a frontal (labial) tooth with ceramics and attach it to the tooth after 1 to 2 weeks.

After making a laminate-shaped thin shell with the non-light-curing resin material of the present invention in advance, it can be completed immediately after tooth preparation on the same day by selecting an appropriate shape to fit into the oral cavity. The total treatment time per tooth is about 10 minutes, which can be significantly reduced compared to 1-2 weeks required in the prior art.

The present invention is provided fixed in a hard frame so as not to be deformed during transport or storage. It is also supplied sealed in a pack that can block light to prevent light polymerization.

The deformable tooth-shaped prosthesis provided by being molded in advance of the present invention can be very usefully used in manufacturing temporary artificial teeth in dentistry, and when its strength is increased, it can be used as a final artificial tooth that can be used for a long time. It can bring about a big change in artificial teeth being manufactured in the dental field.

100,200,300: prosthesis
101: intaglio attachment part
201: screw hole
202 : abutment
203: handle part

Claims (12)

It is easy to deform the external shape when physical force is applied, has the overall appearance of the tooth crown made of non-hardening synthetic resin material so that it can be hardened when desired, and has an intaglio attachment part that is attached to the preparation of the abutment. A deformable tooth-shaped prosthesis that is provided pre-molded. The method according to claim 1, wherein the synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl- A prosthesis comprising various combinations of 4-methylphenol and ethyl 4-dimethylamino benzoate. The prosthesis according to claim 1, wherein the curing comprises curing by photocuring, thermal curing, or chemically active reaction. It has an overall appearance of a dental crown made of a non-hardening synthetic resin material so that the external shape can be easily deformed when a physical force is applied, and can be hardened when desired, a screw hole is formed in the center, and an implant is placed at the lower end of the screw hole A deformable tooth-shaped prosthesis provided pre-molded, characterized in that the abutment that can be connected to is fixedly connected. The method according to claim 4, wherein the synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl- A prosthesis comprising various combinations of 4-methylphenol and ethyl 4-dimethylamino benzoate. The prosthesis according to claim 4, wherein the abutment is made of a metal material or a biocompatible non-metal material. The prosthesis according to claim 4, wherein a handle used to connect the abutment to the implant is further provided to be inserted into the screw hole. The prosthesis according to claim 4, wherein the abutment has a shape corresponding to that of the implant connection part, but is rotatable so as to be adjusted in the connection direction. The prosthesis according to claim 4, wherein the curing comprises curing by photocuring, thermal curing, or chemically active reaction. It is easy to deform the external shape when a physical force is applied, has the overall appearance of the tooth crown made of non-hardening synthetic resin material so that it can be hardened when desired, and is used as a pontic for a bridge. Possible tooth-shaped prostheses. The method according to claim 10, wherein the synthetic resin material is urethane dimethacrylate, triethylene glycol dimethacrylate, bisphenol A-glycidyl methacrylate, silica, barium glass, camphorquinone, 2,6-ditert-butyl- A prosthesis comprising various combinations of 4-methylphenol and ethyl 4-dimethylamino benzoate. The prosthesis of claim 10 , wherein the curing comprises curing by photocuring, thermal curing, or chemically active reaction.

Images