JP2019208826A - Dentition apparatus - Google Patents

Abstract

To provide a dentition apparatus that achieves both of comfortable usability implemented by preventing the apparatus from being bitten and high orthodontic force and stability.SOLUTION: A dentition apparatus 1 comprises: an apparatus body 2 that includes a lip side part for covering part or all of a lip side portion of dentition of a human body wearing the dentition apparatus and a tongue side part for covering part or all of a tongue side portion and is formed in an approximately U-shape in a plan view; and a wire 3 for connecting the lip side part and the tongue side part. The apparatus body 2's portion corresponding to an occlusal surface is excised, which forms a gap G between the lip side part and the tongue side part. Preferably, the wire includes a tongue side portion that passes through the tongue side part of the apparatus body 2, a connection portion for connecting the tongue side part with the lip side part, and a lip side portion that passes through the lip side part.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to an orthodontic appliance for correcting a dentition or mounting it on a dentition for a predetermined period so that the corrected dentition is not restored.

  In modern society, the number of people suffering from teeth is increasing. Various techniques have been proposed so far for correcting the arrangement of the dentition or as an appliance to be mounted on the dentition so that the corrected dentition does not return to its original position.

  For example, in the technique described in Patent Document 1, a metal wire is fixed to a resin that is a lump of resin material, and the dentition can be fixed by the elastic force of the wire.

  However, in the technique described in Patent Literature 1, the wire itself tends to be thick because the dentition is fixed by the wire. Therefore, from the wearer of the dentition appliance, when closing the mouth during conversation, closing the mouth at rest, or closing the mouth at some time and biting, etc. There is no request. In addition, because the wire is wound around and fixed to the entire dentition, the other person can see the wire when opening the mouth, such as during conversation, creating a psychological burden on the wearer of the dentition appliance, and aesthetics There is also a request for lacking.

  As what solves the problem of the dentition appliance using a wire like the said patent document 1, what is called a mouthpiece type dentition appliance as shown in patent document 2 is proposed.

  According to the technique of the above-mentioned Patent Document 2, a part or the whole of a tooth row is covered with a cover formed of a transparent resin, and the tooth row is fixed by an elastic force of the resin. Since a transparent resin cover is used, it is possible to cover the drawback of the wire brace that the visual impression is not good.

Japanese Patent Laid-Open No. 2004-000719 JP 2009-050723 A

  However, in order to fix the dentition by the resin cover that covers the dentition, the entire cover is bitten when engaged in a conversation or at rest. For this reason, there is room for further improvement in improving the feel when worn, like the wire brace. In addition, since the dentition is corrected and fixed only by the resin cover, the force applied to the dentition is weak, and deviation may occur during wearing. Therefore, there is room for improvement in terms of stability.

  In view of these problems, an object of the present invention is to provide a dental appliance that achieves both a comfortable usability in which the appliance is prevented from being bitten, and a high correction force and stability. In the present invention, the meaning represented by the term orthodontic force includes not only the force for actually moving the dentition but also the force for preventing the corrected dentition from returning.

  The present inventors fix the dentition by an appliance main body having a lip side portion covering part or all of the lip side portion of the dentition and a lingual side portion covering part or all of the lingual side portion. By excising the part corresponding to the occlusal surface of the main body and connecting the lip side and lingual side with a wire, it is possible to meet the conflicting demands of comfortable usability and high correction power and stability The headline and the present invention have been completed. Specifically, the present invention provides the following.

  A dentition orthosis according to the present invention has a lip side part that covers a part or all of the lip side part of a dentition of a human body to be worn, and a lingual side part that covers a part or all of the lingual part. And a wire connecting the lip side portion and the lingual side portion, and a portion corresponding to the occlusal surface in the device main body has been excised. A gap is formed between the labial side and the lingual side.

  According to this orthodontic appliance, since the part corresponding to the occlusal surface in the appliance main body is excised, the appliance main body is not bited together at the time of occlusion, and a comfortable usability without discomfort can be obtained. Possible dental appliances can be provided. Further, a correction force can be applied by sandwiching the dentition between the labial side and the lingual side by a gap formed by excising a portion corresponding to the occlusal surface. Furthermore, since the lip side portion and the tongue side portion of the appliance body are connected by the wire, it is possible to prevent the appliance body from being displaced during wearing.

  Further, in the above dentition appliance, the wire includes a tongue side portion passing through the tongue side portion of the appliance main body, a connection portion connecting between the tongue side portion and the lip side portion, and the lip side portion. It is preferable to have a labial part passing through.

  According to this dentition appliance, the wire connects the lingual side portion passing through the lingual side portion of the appliance main body, the lip side portion passing through the lip side portion of the appliance main body, and the lip side portion and the lingual side portion. Therefore, it is possible to maintain strength while reliably reinforcing the correction force of the orthosis main body. Moreover, since the connection part of a wire connects the lip side part and tongue side part of an orthosis main body, the shift | offset | difference which arises between the lip side part and tongue side part of an appliance main body can be prevented reliably.

  Further, in the above dentition appliance, the connecting portion of the wire passes between the canine tooth and the first premolar, and the wire is arranged between the tongue side portion and the lip side portion of the appliance body. Including a first connection portion and a second connection portion that passes between the first molar and the second molar to place the wire between the labial side and the lingual side of the appliance body. Is preferred.

  According to this dentition appliance, since the connecting portion of the wire passes between the teeth and connects the lip side portion and the lingual side portion of the appliance main body, it is possible to prevent the user from biting the wire. . In addition, since the wire connection part passes between the canine and the first premolar, connect the lip side part and the tongue side part of the appliance body at a position where it is difficult for a third party to see. Can do. In addition, because it is configured to pass between the first molar and the second molar, not only the lip side and lingual side of the appliance body are connected, but the entire dental appliance is securely attached to the dentition. It becomes possible to attach to.

  Moreover, in said dentition appliance, it is preferable that the said wire is a wire for brackets.

  According to this dentition appliance, the wire for brackets thinner than the wire used with a resin is used. Therefore, the biting of the wire is less likely to occur at the time of occlusion, and the feeling of use is excellent, and furthermore, the wire can be prevented from being visually recognized by others.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the dental appliance which has the advantage of both the comfortable usability which prevented the biting of the appliance, and high orthodontic force and stability.

FIG. 1A is a diagram looking up from below, showing the overall configuration of a dentition appliance 1 applied to a dentition. FIG. 1B is a diagram illustrating the entire configuration of the dentition appliance 1 applied to the dentition, as viewed from obliquely below. FIG. 2A is a diagram showing a state when the dental appliance 1 shown in FIG. 1 is attached to a human maxillary dentition and viewed from below the upper jaw toward the upper jaw. FIG. 2B is a diagram showing a state when the dental appliance 1 shown in FIG. 1 is attached to a human maxillary dental row and visually recognized from the lower right side of the dental row toward the upper left side. FIG. 2C is a diagram showing a state when the dental appliance 1 shown in FIG. 1 is attached to a human maxillary dentition and viewed from the front to the back of the dentition.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. This is merely an example, and the technical scope of the present invention is not limited to this.

<Dental appliance 1>
〔overall structure〕
FIG. 1 is a diagram showing an overall configuration of a dental appliance 1 applied to a dental row, which is a preferred embodiment of the present invention. 1A shows a view looking up from below, and FIG. 1B shows a view looking up from obliquely below. In the present invention, since there is no great difference between the appliance applied to the upper jaw and the appliance applied to the lower jaw, only the dental appliance 1 applied to the upper jaw will be described.

  The dentition appliance 1 includes an appliance main body 2 formed in a substantially U shape in plan view so as to cover a part or all of the dentition, and a metal wire 3 embedded in the appliance main body 2.

  As a material for forming the appliance main body 2, a layered body of ethylene-vinyl acetate copolymer resin (EVA) or ethylene-vinyl acetate copolymer resin (EVA) and a thermoplastic polyurethane elastomer is suitable. These materials have moderate hardness and moderate elasticity, and when attached to the dentition, force is applied in the direction of correcting the dentition by the elastic force. As will be described later, the appliance main body 2 is formed into a desired shape in which grooves are formed that match the shape of the dentition by melting the material and solidifying the dentition of the wearer over the model. .

  The wire 3 is a wire made of metal such as stainless steel or titanium, and is embedded in the appliance main body 2. The wire 3 gives an elastic force to the appliance main body 2 in the direction of correcting the dentition, the correction force of the appliance main body 2 is reinforced, and the dentition appliance 1 is fixed to be supported at an appropriate position.

[Body body 2]
The orthosis main body 2 is provided to fix and support each tooth one by one and to restore a beautiful arrangement of teeth. Since it is hard to be visually recognized by others and is excellent in aesthetics, the color of the appliance main body 2 is transparent or translucent, and is preferably colorless and transparent.

  In the present embodiment, the appliance main body 2 is substantially in plan view covering a lip side portion of the dentition (a portion on the near side when a third party views the dentition of the wearer of the dentition appliance 1 from the front). The U-shaped sheet-like lip side portion 21 and the tongue side portion (the portion on the back side when a third person sees the dentition of the wearer of the dentition 1 from the front) are substantially U-shaped in plan view. Sheet-like lingual side portion 22.

  The lip side portion 21 is provided with grooves 21L1 to 21L6 and 21R1 to 21R6 that match the shape of the lip side portion of the wearer's dentition, and the lingual side portion 22 has a lingual side of the wearer's dentition. Grooves 22L1 to 22L6 and 22R1 to 22R6 adapted to the shape of the portion are provided. Then, the labial side portion 21 and the lingual side portion 22 of the appliance main body 2 cooperate to sandwich the dentition from the front and the back, so that the correction force works to maintain the position of the dentition.

  The lip side portion 21 and the tongue side portion 22 are separate bodies, and the lip side portion 21 and the tongue side portion 22 are connected by a wire 3. Even if a gap G (gap) is provided between the lip side portion 21 and the lingual side portion 22 by connecting the lip side portion 21 and the lingual side portion 22 with the wire 3, the dentition appliance 1 as a whole The occlusal surface where the upper dentition and the lower dentition come into contact with each other can be exposed while being integrated. Then, a gap G is formed between the lip side portion 21 and the lingual side portion 22 so that the occlusal surface is exposed, and a portion corresponding to the occlusal surface in the orthosis main body 2 is cut off, thereby enabling the conversation. When the patient is resting or biting, the wearer does not bite the appliance main body 2, and usability without a sense of incongruity can be obtained.

  FIG. 2 is a diagram illustrating a state in which the dental apparatus 1 according to the present embodiment is mounted on a human maxillary dentition. 2A is a view showing a state when the dental appliance 1 is mounted on a human maxillary dentition and viewed from the upper jaw downward to the upper jaw. FIG. 2B is a diagram showing a state in which the dental appliance 1 is mounted on a human maxillary dentition and viewed from the lower right side of the dentition toward the upper left side. FIG. 2C is a diagram showing a state when the dental appliance 1 is mounted on a human maxillary dentition and viewed from the front to the back of the dentition.

  In the present embodiment, the orthodontic appliance body 2 includes intermediate incisors TR1, TL1, side incisors TR2, TL2, canine teeth TR3, TL3, first premolars TR4, TL4, second premolars TR5, TL5, and first premolars TR6. , TL6.

  As shown in FIGS. 2B and 2C, the lip side portion 21 of the appliance main body 2 is defined by a lip side upper end 21U that is the upper end portion thereof and a lip side lower end 21L that is the lower end portion. On the other hand, as shown in FIGS. 2A and 2B, the lingual side portion 22 of the appliance main body 2 is formed so as to cover not only the crown portion but also the gingival portion in all portions.

  Hereinafter, the lip side upper end 21U and the lip side lower end 21L of the lip side part will be described in detail. The lip side portion 21 of the appliance main body 2 in the present embodiment is occlusal at portions corresponding to the canines TR3, TL3, the first premolars TR4, TL4, the second premolars TR5, TL5 and the first premolars TR6, TL6. To cover the crown part (the part that can be seen as a tooth when opening the upper mouth from the gingiva) and the gingival part (the part that cannot be seen as the tooth when opening the lower mouth from the gingiva) except the face, A lip side upper end 21U and a lip side lower end 21L of the lip side portion 21 are set. In the said site | part, since the labial side part 21 covers even a gingival part, the orthodontic force of the dentition appliance 1 can be hold | maintained firmly.

  Specifically, the lip side upper end 21U in the region corresponding to the canines TR3, TL3, the first premolars TR4, TL4, the second premolars TR5, TL5 and the first premolars TR6, TL6 is directed to the back side of the mouth. By setting so as to incline upward, the labial portion 21 is formed so as to cover up to the gingival portion at the site.

  On the other hand, in the portions corresponding to the central incisors TR1 and TL1 and the side incisors TR2 and TL2, the labial portion 21 covers only the crown portion excluding the occlusal surface, and the labial portion 21 reaches the gingival portion. The lip side upper end 21U and the lip side lower end 21L of the lip side portion 21 are set so as not to cause a lip. Therefore, when the mouth such as conversation or chewing is opened, the orthosis 2 is prevented from getting in the way, and a comfortable feeling of use can be obtained.

  Specifically, by setting the lip side upper end 21U in the part corresponding to the central incisors TR1 and TL1 and the side incisors TR2 and TL2 to be substantially horizontal, the lip side part 21 has only the crown part in the part. It is formed to cover.

  In this embodiment, the lip side upper end 21U and the lip side lower end 21L are set so that the lip side part 21 covers the gingival part at the part corresponding to the canine teeth TR3 and TL3, but only the crown part is covered. It does not matter if set to

[Wire 3]
Returning to FIG. The wire 3 is a metal wire such as stainless steel or titanium, and is embedded in the resin equipment body 2 by a method described later. The wire 3 includes a first wire member 31 provided at a position for supporting a so-called front tooth and a second wire member 32 provided at a position for supporting a so-called back tooth, and is formed of a substantially U-shaped sheet. Embedded along the orthosis body 2. By urging the appliance body 2 in the direction of correcting the dentition by the elastic force of the curved metal wire constituting the wire 3, the correction force of the resin appliance body 2 is reinforced. Moreover, the wire 3 in this embodiment has a role which connects the lip side part 21 and the lingual side part 22.

  The first wire member 31 includes a first lip side portion 31 </ b> A passing through the lip side portion 21 of the appliance main body 2, a first lingual side portion 31 </ b> B passing through the tongue side portion 22, and the lip side portion 21 and the tongue side portion 22. And a first connection portion 31C for connecting the two. The second wire member 32 includes a second lip side portion 32A passing through the lip side portion 21 of the appliance main body 2, a second lingual side portion 32B passing through the lingual side portion 22, and the lip side portion 21 and the tongue side portion 22. And a second connection portion 32 </ b> C that connects the two.

  In this manner, the wire 3 is connected to connect the lip side portion passing through the lip side portion 21 of the appliance main body 2, the lingual side portion passing through the tongue side portion 22, and the lip side portion 21 and the tongue side portion 22. By comprising with a part, intensity | strength can be hold | maintained, reinforce | strengthening the correction force of the resin main body 2 reliably.

  Furthermore, as described above, in the present embodiment, the lip side portion 21 and the tongue side portion 22 of the appliance main body 2 are separate. Even if a gap G (gap) is provided between the lip side portion 21 and the lingual side portion 22 by connecting the lip side portion 21 and the lingual side portion 22 with the wire 3, the dentition appliance 1 as a whole The occlusal surface where the upper dentition and the lower dentition come into contact with each other can be exposed while being integrated.

  As shown in FIGS. 2A to 2C, in the present embodiment, the first lingual side portion 31B of the first wire member 31 includes the central incisors TR1, TL1, side incisors TR2, TL2, and canine teeth of the lingual side portion 22. It passes through the part corresponding to TR3 and TL3. Further, the first connection portion 31C exhibits a function of passing between the canine teeth TR3 and TL3 and the first premolar teeth TR4 and TL4 and connecting the labial side portion 21 and the lingual side portion 22 with the wire 3. The first lip side portion 31A is set so as to pass through a portion corresponding to the first premolars TR4 and TL4 of the lip side portion 21.

  The second lingual side portion 32B of the second wire member 32 passes through portions corresponding to the first premolars TR4 and TL4, the second premolars TR5 and TL5, and the first premolars TR6 and TL6 of the lingual side part 22. . The second connecting portion 32C has a function of passing between the first molar TR6, TL6 and the second molar TR7, TL7 and connecting the labial portion 21 and the lingual portion 22 with the wire 3. Demonstrate. The second lip side portion 32A is set so as to pass through portions corresponding to the first molar teeth TR6 and TL6 of the lip side portion 21.

  Since the wire 3 does not pass through the lip side portion 21 in the portion corresponding to the central incisor TR1, TL1, side incisor TR2, TL2 and canine tooth TR3, TL3 by routing the wire 3 as described above, Even when the mouth is opened when laughing or laughing, the wire 3 is difficult to be seen by others and the psychological burden on the wearer can be reduced. Moreover, in the regions corresponding to the central incisors TR1, TL1, side incisors TR2, TL2, canine teeth TR3, TL3, first premolars TR4, TL4, second premolars TR5, TL5 and first premolars TR6, TL6 Since the first lingual side portion 31B and the second lingual side portion 32B of the wire 3 pass through the lingual side portion 22, the effect of reinforcing the correction force of the appliance main body 2 by the wire 3 is not lost. That is, in the part corresponding to the central incisor TR1, TL1, side incisor TR2, TL2 and canine tooth TR3, TL3, the wire 3 does not pass through the lip side part 21 but through the tongue side part 22, thereby The effect of reducing the psychological burden and the effect of reinforcement by the wire 3 can be obtained at the same time.

  Moreover, in the site | part corresponding to 1st premolars TR4 and TL4 and 1st premolars TR6 and TL6, since it has the structure which the wire 3 passes to both the lip side part 21 and the lingual side part 22, it is a lip side part. Decrease in the reinforcing force due to the absence of the wire 3 in front of 21 can be prevented. That is, in the portions corresponding to the central incisors TR1, TL1, side incisors TR2, TL2 and canine teeth TR3, TL3, the wire 3 does not pass through the labial side 21, but the first premolars TR4, TL4 and the first large teeth Since the wire 3 passes through both the labial side portion 21 and the lingual side portion 22 in the portion corresponding to the molars TR6 and TL6, the orthodontic force of the appliance main body 2 can be reliably reinforced.

  Furthermore, due to the presence of two connection portions (first connection portion 31C and second connection portion 32C) that connect between the lip side portion 21 and the tongue side portion 22, the lip side portion 21 of the appliance body 2 and the tongue The correction force acting between the side portions 22 can be reliably reinforced.

  In addition, since the lip side portion 21 and the lingual side portion 22 are separate bodies, the force pressing the dentition from the front and the rear when the dentition appliance 1 is mounted on the dentition is the first connecting portion 31C and the first portion. This is provided by the two connection portions 32C. That is, the wire 3 in this embodiment has the effect of reinforcing the orthodontic force of the plastic appliance main body 2, the effect of connecting the lip side portion 21 and the lingual side portion 22 of the appliance main body 2, and the dentition appliance 1 to the teeth. Both of the effects of urging in the direction of pressing against the row are performed simultaneously.

  And in the wire 3 of the dentition appliance 1 shown in the present embodiment, it passes through portions corresponding to the central incisors TR1, TL1, side incisors TR2, TL2 and canine teeth TR3, TL3 of the tongue side portion 22 in the appliance main body 2. A portion corresponding to the first premolars TR4 and TL4 of the labial side portion 21 through the first connection part 31C between the canine teeth TR3 and TL3 and the first premolars TR4 and TL4. In the region corresponding to the central incisors TR1, TL1, side incisors TR2, TL2 and canine teeth TR3, TL3 that are easily visible to others, the lip side There is no wire 3. On the other hand, the wire 3 is firmly reinforced on the lingual side that is not visually recognized by others. Therefore, there is an effect that when the wearer opens his / her mouth, the wire 3 is hard to be visually recognized by another person and is firmly reinforced at a site that is difficult to be visually recognized by the other person.

  In addition, the second lingual side portion 32B passing through portions corresponding to the first premolars TR4, TL4, the second premolars TR5, TL5 and the first premolars TR6, TL6 of the lingual side part 22 in the orthosis main body 2 is The second labial portion 32A passing through the portion corresponding to the first molars TR6, TL6 of the labial portion 21 through the second connection portion 32C between the molars TR6, TL6 and the second molars TR7, TL7. Since it is comprised so that it may transfer to, there exists an effect of fixing the dentition appliance 1 firmly with respect to a dentition. That is, since the second connection portion 32C of the second wire member 32 is the portion located on the innermost side in the mouth in the portion of the wire 3, it simply shifts between the lip side portion 21 and the tongue side portion 22. It has not only a function but also a function of fixing the entire dentition 1 to the dentition. Depending on the wearer, the second molars TR7 and TL7 and the third molars (not shown) are not present in the first place, or are missing due to reasons such as decayed teeth. Since the second connecting portion 32C may be applied to the outside of the second molars TR7 and TL7 or the outside of the third molar (not shown) because it may be missing, the teeth of the dental appliance 1 Fixing to the column may become unstable. In the present embodiment, the second connecting portion 32C is configured to pass between the second molars TR7 and TL7 and the first molars TR6 and TL6 and to be applied to the first molars TR6 and TL6, thereby providing a tooth. The row appliance 1 can be firmly fixed to the dentition.

  And in this embodiment, the wire 3 is using the wire for brackets with a diameter smaller than the normal wire which uses resin. Therefore, the distance between teeth, such as between the canines TR3, TL3 and the first premolars TR4, TL4 and between the first molars TR6, TL6 and the second molars TR7, TL7, is not wide. Even at the site, the wire can be placed so that it enters between the teeth. As a result, even in the occlusal position and the resting position, the wire is not bitten and used without feeling uncomfortable. Can continue.

  In the present embodiment, the wire 300 is constituted by the two wire members of the first wire member 31 and the second wire member 32, but is not limited thereto, and may be constituted by one wire member. I do not care. For example, the lingual side portion passing through the lingual side portion 22 of the portion corresponding to the central incisors TR1, TL1, side incisors TR2, TL2 and canine teeth TR3, TL3, between the canine teeth TR3, TL3 and the first premolars TR4, TL4 Corresponding to the first transition portion, the first premolars TR4, TL4, the second premolars TR5, TL5, and the first premolars TR6, TL6. Lip side portion passing through the labial side 21 of the region, second transition portion transitioning between the first molar TR6, TL6 and the second molar TR7, TL7, and the first molar TR6, TL6, second You may comprise as one wire member which connected the lingual side part which passes the lingual side part 22 of the site | part corresponding to premolars TR5 and TL5 and 1st premolars TR4 and TL4.

  In addition, the connection portion of the wire 300 is arranged between the canine teeth TR3, TL3 and the first premolars TR4, TL4, the first connection portion 31C, the first molars TR6, TL6 and the second molars TR7, TL7. However, the present invention is not limited to this. For example, the first connecting portion 31C may be arranged between the first premolars TR4 and TL4 and the second premolars TR5 and TL5, and the second connecting portion 32C may be the second premolars TR5 and TR5. In the configuration arranged between TL5 and the first molars TR6, TL6, or the second connecting portion 32C is arranged between the second molars TR7, TL7 and the third molars TR8, TL8. There may be.

〔how to use〕
The usage method of the dentition orthosis 1 in this embodiment is demonstrated.

  In order to wear the dentition orthosis 1 formed as described above, first, each groove 21L1 to 21L6, 21R1 to 21R6, 22L1 formed in the dentition orthosis 1 with the mouth opened by the wearer. The dental appliance 1 is positioned at a position where the positions of 22L6, 22R1 to 22R6 and the respective teeth are approximately matched, and the dental appliance 1 is inserted into the dental row.

  Next, the first connection portion 31C is passed between the canine teeth TR3, TL3 and the first premolars TR4, TL4, and the second connection portion 32C is connected between the second molars TR7, TL7 and the first molars TR6, TL6. Alignment is performed by passing through, and the dentition appliance 1 is worn on the dentition. At this time, since the grooves 21L1 to 21L6, 21R1 to 21R6, 22L1 to 22L6, and 22R1 to 22R6 that match the shape of each tooth are formed in the appliance main body 2, alignment is performed more accurately.

  The lip side portion 21 and the tongue side portion 22 of the appliance main body 2 are formed separately through the gap G, but are connected by the first connection portion 31C and the second connection portion 32C of the wire 3. . Further, the presence of the first connection portion 31C and the second connection portion 32C adds force to the lip side portion 21 and the lingual side portion 22 from the front and back, so that stable wearing without slipping during wearing. Is possible.

〔Production method〕
The manufacturing method of the dentition orthosis 1 in this embodiment is demonstrated.

  First, a model such as a plaster mold imitating the shape of the wearer's dentition is prepared, and a flat sheet serving as a first material for forming the appliance body 2 is put on the dentition formed on the model. And heat and dissolve the first material. At this time, a layer of a first material that conforms to the shape of the dentition is formed on the surface of the model.

  Next, the metal wire that is the material of the wire 3 including the lip side portion, the connection portion, and the lingual side portion as described above and is formed in a desired shape is placed at an appropriate position in the melted first material. Further, a flat sheet as a second material for forming the appliance main body 2 is placed and heated to be melted to form the dentition appliance 1.

  Thus, the appliance main body 2 which has a groove | channel adapted to the shape of a wearer's dentition can be formed by melt | dissolving and solidifying the material which forms the appliance main body 2 so that it may cover the model of a dentition. Moreover, the wire 3 can be firmly fixed to the appliance main body 2 by arrange | positioning so that the wire 3 may be inserted | pinched between 1st material and 2nd material.

  And the gap G is formed by excising the site | part corresponded in the occlusal surface in the orthosis main body 2, and the orthosis main body 2 is isolate | separated into the lip side part 21 and the tongue side part 22. FIG. In this way, the dentition orthosis 1 is formed.

  At this time, as the second material, a layered body in which a harder flat plate is superimposed on the same flat plate as the material forming the first material is prepared, and the harder flat plate is outside, that is, opposite to the dentition. It is preferable to dissolve in such a manner. By doing in this way, since the wire 3 is embedded with the same material as the material forming the first material, the wire 3 can be stably embedded in the appliance body 2 and hard on the outside. Since such a material is used, it is possible to provide the dentition appliance 1 having moderate rigidity and stability as a whole.

  As the first material, for example, a flat plate made of ethylene-vinyl acetate copolymer resin (EVA) is used. As the second material, thermoplastic polyurethane elastomer and ethylene-vinyl acetate copolymer resin (EVA) are used. It is possible to use a flat plate made of a layered body. As a result, since the wire is sandwiched and embedded with the same quality material, the wire can be stably fixed to the resin material, and the orthosis body having both rigidity and flexibility can be corrected. It is possible to provide an orthodontic appliance that has a force and is easy to fit on the wearer's dentition and does not slip during wearing. Then, by making the first and second materials transparent or translucent, preferably colorless and transparent, it is possible to provide a dental appliance that is less visible to others and has high aesthetics.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment mentioned above. The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

<Appendix 1>
The dental appliance 1 of Supplementary Note 1 is as follows.

〔Technical field〕
The present invention relates to a dentition orthosis for mounting on a dentition.

[Background Technology]
In modern society, the number of people suffering from teeth is increasing. Various techniques have been proposed for correcting the arrangement of the dentition or as an appliance to be mounted on the dentition so that the corrected dentition does not return to its original position.

  For example, in the technology described in Japanese Patent Application Laid-Open No. 2004-000719, a metal wire is fixed to a resin that is a lump of resin material, and the dentition can be fixed by the elastic force of the wire.

  However, in the technique described in the above publication, the wire itself tends to be thick because the dentition is fixed by the wire. Therefore, from the wearer of the dentition appliance, when closing the mouth during conversation, closing the mouth at rest, or closing the mouth at some time and biting, etc. There is no request. In addition, because the wire is wound around and fixed to the entire dentition, the other person can see the wire when opening the mouth, such as during conversation, creating a psychological burden on the wearer of the dentition appliance, and aesthetics There is also a request for lacking.

  A so-called mouthpiece-type dentition appliance as disclosed in Japanese Patent Application Laid-Open No. 2009-050723 has been proposed as a solution to the problem of the dentition appliance using a wire as described in the above publication.

  According to the technique of the above publication, a part or the whole of the dentition is covered with a cover formed of a transparent resin, and the dentition is fixed by the elastic force of the resin. Since a transparent resin cover is used, it is possible to cover the drawback of the wire brace that the visual impression is not good.

[Summary of the Invention]
[Problems to be Solved by the Invention]
However, in order to fix the dentition by the resin cover that covers the dentition, the entire cover is bitten when engaged in a conversation or at rest. For this reason, there is room for further improvement in improving the feel when worn, similar to wire braces. Further, since correction and fixation of the dentition is performed only with the resin cover, the force applied to the dentition is weak, and deviation may occur during wearing. Therefore, there is room for improvement in terms of stability.

  In view of these problems, an object of the present invention is to provide a dental appliance that has both excellent aesthetics and high orthodontic force and stability. In the present invention, the meaning represented by the term orthodontic force includes not only the force for actually moving the dentition but also the force for preventing the corrected dentition from returning.

[Means for solving the problems]
The inventors of the present invention have formed a brace body with a transparent or translucent material and covered the dentition so as to be sandwiched from the lip side and the lingual side. The present invention has been completed by finding that the above-mentioned object can be achieved by making the height different depending on the case. Specifically, the present invention provides the following.

  The invention which concerns on 1st characteristic is comprised by the substantially transparent or semi-transparent material which has elasticity, and was formed in the substantially U shape by planar view which covers a part or all of the dentition of the human body to wear | wear. A main body, the appliance main body having a lip side portion covering the lip side portion of the dentition and a lingual side portion covering the lingual side portion of the dentition, and the appliance main body includes intermediate incisors and side incisors. , The canine, the first premolar, the second premolar, and the first premolar, and the height of the labial side of the appliance body is the canine, the first premolar, the second premolar and the first premolar In the part corresponding to one molar, it is set to cover the crown part and the gingival part, and in the part corresponding to the central incisor and the side incisor, the crown part is covered and does not reach the gingival part. Providing a dental appliance that is configured as such.

  According to the first aspect of the invention, the dentition is fixed by the transparent or translucent appliance main body that covers a part or all of the dentition, so that the dentition appliance having excellent aesthetics can be provided. In addition, the appliance main body has a lip side portion and a lingual side portion, and covers the dentition so as to be sandwiched from the lip side and the lingual side, so that a dentition appliance having a strong correction force can be provided. Furthermore, the height of the labial side portion in the orthosis main body is set so as to cover the crown portion and the gingival portion in the portions corresponding to the canine tooth, the first premolar, the second premolar, and the first premolar. Therefore, it is possible to maintain a strong orthodontic force, and at the part corresponding to the central incisor and the side incisor, the crown part excluding the occlusal surface is covered so as not to reach the gingival part. Therefore, it is possible to provide a dental appliance that can provide a comfortable feeling of use without causing the appliance body to become an obstacle when the mouth is opened.

DESCRIPTION OF SYMBOLS 1 Dental appliance 2 Orthosis body 21 Lip side part 22 Tongue side part 3 Wire 31 1st wire member 32 2nd wire member G Gap

Claims (4)

It has a lip side portion that covers part or all of the lip side portion of the dentition of the human body to be worn and a lingual side portion that covers part or all of the lingual side portion, and is formed in a substantially U shape in plan view. An orthosis body;
A wire connecting the lip side and the lingual side;
A dental appliance in which a portion corresponding to the occlusal surface in the appliance main body is excised, and a gap is formed between the labial side and the lingual side by the excision. The wire
A lingual part passing through the lingual side of the appliance body;
A connecting portion connecting between the lingual side portion and the lip side portion;
The orthodontic appliance according to claim 1, further comprising a labial portion passing through the labial portion. The connecting portion of the wire is
A first connecting portion that passes between the canine and the first premolar to place the wire between the lingual side and the labial side of the appliance body;
3. A second connection portion that passes between a first molar and a second molar and includes a second connection portion that positions the wire between the labial side and the lingual side of the appliance body. Dentition orthosis.   The dental appliance according to any one of claims 1 to 3, wherein the wire is a wire for a bracket.

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