JP2022113271A - orthodontic appliance - Google Patents

Abstract

To provide an orthodontic appliance capable of being extremely easily attached even by a user with maxillary protraction, and capable of correcting maxillary protraction securely and early.SOLUTION: An orthodontic appliance 10 includes: a base part 11 sandwiched between the upper tooth row of an upper jaw and the lower tooth row of a lower jaw and formed in a U-shape in plane view; an outer peripheral wall 20 disposed at an outer peripheral edge side of the base part 11 and projecting in a vertical direction; and an inner peripheral wall 40 disposed at an inner peripheral edge side of the base part 11 and projecting in a vertical direction. The inner peripheral wall 40 includes: an inner peripheral upper wall 41 disposed above the base part 11; and an inner peripheral lower wall 42 disposed below the base part 11. The inner peripheral lower wall 42 has an inner peripheral lower front face part 44 facing incisors 1b of the lower tooth row, and an inner peripheral lower lateral face part 48 facing the canine teeth and the molar teeth of the lower tooth row, and is formed so that a lower side part of the inner peripheral lower front face part 44 extends downward with respect to a lower side part of the inner peripheral lower lateral face part 48.SELECTED DRAWING: Figure 7

Description

TECHNICAL FIELD The present invention relates to an orthodontic appliance that is used, for example, for children whose baby teeth are replaced by permanent teeth.

Conventionally, there is a mouthpiece attached to the teeth, for example, as an appliance for correcting the teeth. Such a mouthpiece is formed in a shape that covers the entire upper teeth or the entire lower teeth. That is, the mouthpiece has an open frame structure such that when it is inserted into the oral cavity and mounted on the corresponding dental arch of the user, the tooth engaging member imparts corrective force to the arch. (See, for example, Patent Document 1).

Japanese Patent No. 5705794

However, the conventional mouthpiece as described in the above-mentioned Patent Document 1 has a problem that the correction force for maxillary protrusion is weak and it takes time. In addition, the above-described conventional mouthpiece has a problem that it is difficult for a user with maxillary protrusion to insert it into the oral cavity because the upper jaw protrudes from the lower jaw.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and it is an object of the present invention to provide an orthodontic appliance that can be worn very easily even by a user of maxillary protrusion and that can correct maxillary protrusion reliably and early. is an issue.

In order to achieve such a task, the invention according to claim 1 is provided with a base part sandwiched between the upper tooth row of the upper jaw and the lower tooth row of the lower jaw and formed in a U-shape in plan view, and an outer periphery of the base part. The outer peripheral wall is provided on the edge side and protrudes in the vertical direction, and the inner peripheral wall is provided on the inner peripheral edge side of the base portion and protrudes in the vertical direction, and the outer peripheral wall is provided above the base portion. and an outer peripheral lower wall provided below the base portion, and the inner peripheral wall includes an inner peripheral upper wall provided above the base portion and an inner peripheral upper wall provided above the base portion. An inner peripheral lower wall is provided below, and the outer peripheral upper wall has an outer peripheral upper front face facing the incisors of the upper teeth and an outer peripheral upper side face facing the canines and molars of the upper teeth. The outer peripheral lower wall has an outer peripheral lower front surface facing the incisors of the lower teeth and an outer peripheral lower side surface facing the canines and molars of the lower teeth, and the inner peripheral upper wall includes: It has an inner peripheral upper front surface portion facing the incisors of the upper dentition and an inner peripheral upper side surface portion facing the canines and molars of the upper dentition, and the inner peripheral lower wall faces the incisors of the lower dentition. and an inner peripheral lower front face facing the canines and molars of the lower teeth, wherein the lower side of the inner peripheral lower front is wider than the lower side of the inner peripheral lower side The orthodontic appliance is formed so as to extend downward.

Further, the invention according to claim 2 is, in addition to the configuration according to claim 1, an upper tooth row incisor arrangement portion and the incisor teeth of the lower tooth row in the base portion facing the incisor teeth of the upper tooth row. is formed thicker than the thickness between the part where the other tooth of the upper tooth row faces and the part where the other tooth of the lower tooth row faces. It is characterized by

Moreover, the invention according to claim 3 is characterized in that, in addition to the configuration according to claim 1 or 2, a projection is formed on the front side of the outer peripheral lower front face portion.

Further, the invention according to claim 4, in addition to the configuration according to any one of claims 1 to 3, is characterized in that the outer peripheral lower front surface is formed thicker than the outer peripheral upper front surface. characterized by

Further, according to the invention of claim 5, in addition to the configuration of any one of claims 1 to 4, the inner peripheral upper front part has a narrower interval from the outer peripheral wall as it goes from the upper side to the lower side. On the side of the inner peripheral lower front part, a lower inclined surface is formed such that the distance from the outer peripheral wall becomes narrower from the lower side to the upper side, and the lower inclined surface is It is characterized by being formed behind the upper inclined surface.

Further, the invention according to claim 6, in addition to the configuration according to any one of claims 1 to 5, is characterized in that marks parallel to each other are arranged at regular intervals in the upper part of the outer peripheral upper front part in the vertical direction. It is characterized by being formed in plurality.

Further, the invention according to claim 7 is, in addition to the configuration according to any one of claims 1 to 6, the base portion is located rearward of the rear ends of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion. and an extension formed so as to extend into the body.

Moreover, the invention according to claim 8 is characterized in that, in addition to the configuration according to claim 7, a plurality of parallel marks are formed on the extension portion at regular intervals in the extension direction.

According to the first aspect of the invention, the inner peripheral lower wall has an inner peripheral lower front face facing the incisors of the lower teeth and an inner peripheral lower side face facing the canines and molars of the lower teeth. , the lower side of the inner peripheral lower front surface extends downward than the lower side of the inner peripheral lower side surface, so that when the user of the maxillary protrusion inserts it into the oral cavity, the inner peripheral lower front surface Since the lower part serves as a guide to be inserted into the back side of the incisors of the lower teeth, even a user with maxillary protrusion can wear it very easily, and the feeling of wearing can be enhanced.

Further, according to the second aspect of the invention, the upper tooth row incisor arrangement portion of the base portion where the incisor teeth of the upper tooth row face and the lower tooth row incisor arrangement portion of the base portion where the incisor teeth of the lower tooth row face each other The thickness between the upper and lower teeth is formed to be thicker than the thickness between the other teeth of the upper teeth and the other teeth of the lower teeth. The incisors of the row of teeth can be depressed to facilitate holding them in an upper position, and eruption can be promoted without applying pressure to the molars, and deep occlusion of the maxillary protrusion can be corrected.

Further, according to the third aspect of the present invention, since the protrusion is formed on the front side of the outer peripheral lower front portion, the front side of the outer peripheral lower front portion is less likely to receive a pressing force from the user's lower lip. , the maxillary protrusion can be corrected more reliably and early.

Further, according to the fourth aspect of the present invention, the outer peripheral lower front surface is formed thicker than the outer peripheral upper front surface, so that the front surface of the upper jaw is ideally located on the front side by a predetermined amount from the front surface of the lower jaw. It is possible to correct to a proper position.

Further, according to the fifth aspect of the invention, the lower inclined surface is formed more rearward than the upper inclined surface, so that the front surface of the mandible, which is located behind the user, can be corrected at an early stage. By forcibly applying a guiding force from the front to the front side, it is possible to correct the maxillary protrusion reliably and early.

Further, according to the sixth aspect of the present invention, a plurality of marks parallel to each other are formed in the upper part of the outer peripheral upper front part in the vertical direction at regular intervals, so that the gums on the front surface of the upper jaw of the user can be By cutting and adjusting the vertical length of the front surface of the upper outer circumference corresponding to the length, the length of the upper front surface of the outer circumference is adjusted to the length of the gums on the front of the user's upper jaw. It is possible to adapt the length of the body to improve the feeling of wearing and to improve versatility.

Further, according to the seventh aspect of the present invention, the base portion has an extension portion formed to extend rearward from the rear ends of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion. By cutting and adjusting the length of the extension part according to the length of the user's dentition, the length of the base part can be adapted to the length of the user's dentition, and the feeling of wearing can be improved. In addition, versatility can be enhanced.

Further, according to the eighth aspect of the invention, a plurality of parallel marks are formed on the extension portion at regular intervals in the extension direction, so that the extension portion can be extended corresponding to the length of the user's dentition. The length of the portion can be adjusted by cutting using markings to easily adapt the length of the base portion to the length of the user's dentition.

1 is a perspective view showing an orthodontic appliance according to one embodiment of the present invention; FIG. FIG. 2 is a front view of FIG. 1; FIG. 2 is a rear view of FIG. 1; FIG. 2 is a left side view of FIG. 1; FIG. 2 is a plan view of FIG. 1; 2 is a bottom view of FIG. 1; FIG. FIG. 3 is a cross-sectional view taken along line AA of FIG. 2;

An embodiment of the present invention will be described below. In addition, the following embodiment describes an example of attaching to the upper dentition of the maxilla and the lower dentition of the mandible when changing from the deciduous dentition to the permanent dentition.
[One embodiment of the invention]
1-7 illustrate one embodiment of the present invention.

FIG. 1 is a perspective view showing an orthodontic appliance according to one embodiment of the present invention. 2 is a front view of FIG. 1. FIG. 3 is a rear view of FIG. 1. FIG. 4 is a left side view of FIG. 1. FIG. 5 is a plan view of FIG. 1. FIG. 6 is a bottom view of FIG. 1. FIG. 7 is a cross-sectional view taken along line AA of FIG. 2. FIG.

In the following embodiments, the orthodontic appliance 10 is inserted into the oral cavity and attached to the upper and lower teeth. The left side and the right side with respect to are described as the left side and the right side, respectively. Here, the upper dentition and the lower dentition are, from the front side to the back side, left and right central incisors, left and right lateral incisors, left and right canines, left and right first and second premolars, and left and right first premolars. Arranged in the order of ~3rd molar. Hereinafter, the left and right central incisors and the left and right lateral incisors will collectively be referred to as incisors. Also, the left and right first and second premolars and the left and right first to third molars are collectively referred to as molars.

The orthodontic appliance 10 of this embodiment, as shown in FIGS. 1 to 7, is a mouthpiece type that is attached to the upper dentition of the upper jaw and the lower dentition of the lower jaw. The orthodontic appliance 10 of the present embodiment is attached to the upper teeth of the upper jaw and the lower teeth of the lower jaw to widen the upper teeth and the lower teeth in the lateral direction, and to the teeth in the process of erupting or after the completion of eruption and the completion of the roots. In addition to correcting by guiding the individual teeth in the direction to be aligned, the maxillary protrusion is also corrected.

The orthodontic appliance 10 of the present embodiment is integrally molded entirely from an elastic resin material. Specifically, the resin material is selected from silicone resins, polyolefin resins, styrene resins and acrylic resins, polycarbonate resins, polypropylene resins, elastomers, and the like. The resin material is desirably colorless and transparent or milky white, so that when it is inserted into the oral cavity, it is inconspicuous to be attached to the upper and lower teeth, resulting in excellent aesthetics. The orthodontic appliance 10 is a single piece that takes a long time to guide and move the teeth using a gripping force that closes the lips while eliminating buccal pressure.

The orthodontic appliance 10 mainly includes a base portion 11 , an outer peripheral wall 20 and an inner peripheral wall 40 . The base portion 11 is a portion sandwiched between the upper tooth row of the upper jaw and the lower tooth row of the lower jaw when the orthodontic appliance 10 is inserted into the oral cavity. 40 in a U-shape (substantially U-shape) in plan view. The base portion 11 includes an incisor contact range R1 with which the left and right incisors 1a and 1b of the upper and lower teeth abut, and left and right canines and molars with which the canines and molars of the upper and lower teeth abut. The contact range R2 is formed continuously.

The outer peripheral wall 20 is provided on the outer peripheral edge side of the base portion 11 and is formed to protrude in the vertical direction. The outer peripheral wall 20 includes an outer peripheral lower wall 21 provided below the base portion 11 and an outer peripheral upper wall 30 provided above the base portion 11 . The outer peripheral lower wall 21 and the outer peripheral upper wall 30 are formed in a bilaterally symmetrical shape centering on the portion corresponding to the central incisor.

The outer peripheral lower wall 21 is continuously formed with an outer peripheral lower front surface portion 22 facing the lower incisor 1b and left and right outer peripheral lower side portions 23 facing the lower canine and molar teeth. The outer peripheral lower wall 21 is formed so that the amount of protrusion from the base portion 11 gradually increases from the outer peripheral lower side surface portion 23 on the canine and molar side to the outer peripheral lower front surface portion 22 on the incisor side.

A group of protrusions 27 is provided in a band shape in the horizontal direction on the front side of the outer peripheral lower front portion 22 . The projection group 27 is formed by a large number of minute projections with slightly pointed tips spaced apart from each other at regular intervals. The projection group 27 is arranged so as to correspond to the lower lip when the orthodontic appliance 10 is worn in the oral cavity. As shown in FIG. 7, the outer peripheral lower front surface portion 22 is thicker than the outer peripheral upper front surface portion 31, which will be described later, and is formed so as to incline slightly rearward. The rear surface side of the outer peripheral lower front surface portion 22 becomes an outer peripheral lower rear surface portion 28 formed in a substantially planar shape as shown in FIG. 7 .

The outer peripheral upper wall 30 is continuously formed with an outer peripheral upper front face portion 31 facing the upper incisor teeth 1a and left and right outer peripheral upper side face portions 32 facing the canine teeth and the molar teeth of the upper tooth row. The outer peripheral upper wall 30 is formed such that the upper side of the outer peripheral upper front face portion 31 on the incisor side extends higher than the upper side of the outer peripheral upper side surface portion 32 on the canine and molar side. Therefore, the outer peripheral upper wall 30 is formed with a pair of left and right stepped portions 33 at symmetrical positions between the outer peripheral upper front surface portion 31 and the outer peripheral upper side surface portion 32 to avoid the buccal frenulum. Both corners of the upper side of the outer peripheral upper front face portion 31 are chamfered. The outer peripheral upper side surface portion 32 is formed so as to gradually incline upward from the rearmost position to the outer peripheral upper front surface portion 31 .

A front view V-shaped notch portion 34 into which the upper lip frenulum is fitted is formed in the outer peripheral upper front face portion 31 of the outer peripheral upper wall 30 at the center in the left-right direction. The notch portion 34 is cut downward from the upper side of the outer peripheral upper front surface portion 31 . On the left and right sides of the notch 34, a plurality of marks 35 parallel to each other with respect to the upper side are formed at regular intervals (for example, about 1 mm) in the vertical direction. These marks 35 are, for example, groove-shaped and can be easily cut using a cutting tool such as scissors.

In addition, the outer peripheral lower front surface portion 22 is formed to be twice or more thicker than the outer peripheral upper front surface portion 31 as shown in FIG. 7 . The outer peripheral upper front surface portion 31 is formed such that the front side is inclined rearward, and the rear side is inclined rearward at a smaller angle than the front side. As a result, the outer peripheral upper front surface portion 31 is formed so as to gradually become thinner from the base portion 11 toward the upper side.

Further, the back side of the outer peripheral upper front face portion 31 becomes an outer peripheral upper back face portion 38 formed in a substantially flat shape as shown in FIG. 7 . The outer peripheral upper rear surface portion 38 is arranged forward of the outer peripheral lower rear surface portion 28 by a predetermined amount. As a result, the upper incisor 1a can be guided to an ideal position where the upper incisor 1a is forward of the lower incisor 1b by a predetermined amount, and the maxillary protrusion is brought into an ideal state. so that it can be corrected.

The inner peripheral wall 40 is provided on the inner peripheral edge side of the base portion 11 and is formed to protrude in the vertical direction. The inner peripheral wall 40 includes an inner peripheral upper wall 41 provided above the base portion 11 and an inner peripheral lower wall 42 provided below the base portion 11 as shown in FIG. The inner peripheral upper wall 41 has an inner peripheral upper front face 43 facing the upper incisors 1a, while the inner peripheral lower wall 42 has an inner peripheral lower front face 44 facing the lower teeth 1b. is doing.

The inner peripheral upper front face portion 43 can abut against the incisor teeth 1a of the upper tooth row, and as shown in FIGS. While the upper sloped surface 45 is formed, the inner peripheral lower front face 44 can contact the incisor teeth 1b of the lower tooth row, and the distance from the outer peripheral lower wall 30 becomes narrower from the lower side to the upper side. A lower inclined surface 46 is formed, and this lower inclined surface 46 is formed behind the upper inclined surface 45 .

Also, the inclination angle of the upper inclined surface 45 is set to 35 to 45 degrees with respect to the base portion 11, preferably 40 degrees. In this case, if the inclination angle of the upper inclined surface 45 is less than 35 degrees, the corrective effect is lost, while if it exceeds 45 degrees, it is difficult to wear unless the jaw is shifted, which leads to temporomandibular joint disorder. It is a factor that causes

In addition, the inclination angle of the lower inclined surface 46 is set to 32 to 42 degrees with respect to the base portion 11, preferably 37 degrees. In this case, if the angle of inclination of the lower inclined surface 46 is less than 32 degrees as described above, the corrective effect is lost. As a result, it becomes a factor causing temporomandibular disorder.

Therefore, when the orthodontic appliance 10 is worn in the oral cavity, the incisors 1a of the upper tooth row enter between the upper inclined surface 45 and the outer peripheral upper wall 21, and between the lower inclined surface 46 and the outer peripheral lower wall 30. The incisor teeth 1b of the lower row of teeth are designed to enter.

5 and 6, the inner peripheral upper wall 41 has an inner peripheral upper side surface 47 facing the canines and molars of the upper teeth, while the inner peripheral lower wall 42 faces the canines and molars of the lower teeth. It has an inner peripheral lower side surface portion 48 facing it. The inner peripheral upper side surface portion 47 has an inner peripheral upper side sloped surface 47a on the outer peripheral upper side surface portion 23 side, while the inner peripheral lower side surface portion 48 has an inner peripheral lower side sloped surface portion 48a on the outer peripheral lower side surface portion 32 side. is formed. These inner circumference upper side slope 47a and inner circumference lower side slope 48a are formed to widen the tooth row laterally and to correct the tooth row when the baby tooth row is replaced by the permanent tooth row.

In addition, the inner peripheral lower wall 42 is continuously formed with an inner peripheral lower front surface portion 44 facing the lower incisor tooth 1b and left and right inner peripheral lower side surface portions 48 facing the canine and molar teeth of the lower tooth row. ing. The inner peripheral lower wall 42 is formed such that the lower side of the inner peripheral lower front face portion 44 on the incisor side extends below the lower side of the inner peripheral lower side surface portion 48 on the canine and molar side. Specifically, they are formed so that the heights of the inner peripheral lower front surface portion 44 and the inner peripheral lower side surface portion 48 are changed at left-right symmetrical positions via steps. Both corners of the lower side of the inner peripheral lower front face portion 44 are chamfered. The inner peripheral lower side surface portion 48 is chamfered at the rearmost position.

The base portion 11 has extension portions 11a extending rearward from the rear ends of the outer peripheral upper side surface portion 23 and the outer peripheral lower side surface portion 32 on both left and right sides. A plurality of marks 11b parallel to each other in the front-rear direction are formed at regular intervals (for example, about 1 mm) on these extensions 11a. These marks 11b are, for example, groove-shaped. These extensions 11a can be easily cut along the mark 11b to a desired length using a cutting tool such as scissors, and can be set to a length corresponding to the user's oral cavity. .

In addition, an upper tooth row incisor placement portion 11c in the base portion 11 where the upper tooth row incisor teeth 1a face (here, contact) and a lower tooth row where the lower tooth row face and face incisor teeth 1b. The thickness L between the incisor arrangement portions 11d is the thickness of the portion where the other tooth of the upper tooth row faces (here, does not contact) and the portion where the other tooth of the lower tooth row faces (here, does not contact). It is formed so as to be thicker than the thickness between them. As a result, the upper and lower incisor teeth 1a and 1b are brought into contact with the base portion 11, and the incisor teeth 1a of the upper tooth row of the user with maxillary protrusion are pushed down and easily held in the upper position, and the upper and lower molars are moved. It is possible to promote eruption without abutting the base portion 11 and applying pressure to the molars, thereby correcting deep occlusion of the maxillary protrusion.

Between the upper inclined surface 45 and the lower inclined surface 46 in the vertical direction, three ventilation holes 49 are formed at predetermined intervals in the horizontal direction. These ventilation holes 49 are used for breathing when a child who is a user inserts the orthodontic appliance 10 of this embodiment into the oral cavity.

A tongue space 50 is formed continuously from the inner surfaces of the upper inclined surface 45 and the lower inclined surface 46 to the inner surfaces of the inner peripheral upper side surface portion 47 and the inner peripheral lower side surface portion 48, and the tongue space 50 is provided for the user. function to position the tongue in the correct central position.

As shown in FIGS. 5 and 6, the inner peripheral upper wall 41 and the inner peripheral lower wall 42 are formed so as to protrude in the vertical direction as described above, and each have a U-shape (substantially U-shape) in plan view. It is The U-shaped corners 51 and 52 of the inner peripheral upper wall 41 and the inner peripheral lower wall 42 respectively correspond between the left and right lateral incisors and the left and right canines when the orthodontic appliance 10 is attached. formed in position. An upper inclined surface 45 of the inner peripheral upper wall 41 and a lower inclined surface 46 of the inner peripheral lower wall 42 are formed at positions corresponding to the left and right central incisors and lateral incisors, respectively. The side surface portion 47 and the inner peripheral lower side surface portion 48 of the inner peripheral lower wall 42 are formed at positions corresponding to the canine teeth and the molar teeth, respectively.

As shown in FIG. 5, the inner circumference upper wall 41 is formed so that the inclination angle of the upper inclined surface 45 is gentler than that of the inner circumference upper side surface inclined surface 47a. Similarly, the inner peripheral lower wall 42 is formed so that the inclination angle of the lower inclined surface 46 is gentler than that of the inner peripheral lower side surface inclined surface 48a, as shown in FIG. Thereby, it is possible to match the directions in which the left and right central incisors and lateral incisors and the left and right canines and molars grow.

Next, the action of the orthodontic appliance 10 of this embodiment will be described.

The orthodontic appliance 10 of the present embodiment is applied to children aged 6 to 9 years old, for example, who grow from baby teeth to permanent teeth. First, when using, the vertical length of the outer peripheral upper front surface portion 31 is adjusted by cutting using the mark 35 corresponding to the length of the gums on the front surface of the user's upper jaw. Also, the length of the base portion 11 in the front-rear direction is adjusted by cutting using the mark 11b corresponding to the length in the front-rear direction of the mandible.

Then, the orthodontic appliance 10 is inserted into the oral cavity of the child who is the user of the maxillary protrusion, and attached to the upper and lower dentitions. At this time, the lower side of the inner peripheral lower front face 44 serves as a guide to be inserted into the back side of the lower incisor 1b of the lower teeth, so even a user with maxillary protrusion can wear it very easily. Furthermore, since the upper side of the outer peripheral upper front face 31 serves as a guide to be inserted between the upper lip and the gums of the upper incisors 1a of the upper teeth, the user of maxillary protrusion can more easily wear it. Then, the incisor teeth 1a and 1b of the upper and lower tooth rows abut against the upper inclined surface 45 and the lower inclined surface 46 of the inner peripheral wall 40, respectively. At the same time, the canines and molars of the upper and lower teeth abut against the inner circumference upper side slope 47a and the inner circumference lower side slope 48a.

Then, the incisors 1a of the upper tooth row enter between the upper inclined surface 45 and the outer peripheral upper wall 30, and the incisor teeth 1b of the lower tooth row enter between the lower inclined surface 46 and the outer peripheral lower wall 21. Close your mouth so that your upper and lower lips touch each other.

In this case, since the upper side portion of the outer peripheral upper front surface portion 31 is formed to extend higher than the upper side portion of the outer peripheral upper side surface portion 32, the upper side portion of the outer peripheral upper front surface portion 31 holds the maxillary front surface over a wide range. be able to Since the lower inclined surface 46 is formed more rearward than the upper inclined surface 45, the force that forcibly guides the front surface of the mandible, which is positioned behind the user of the maxillary protrusion, to the front side from an early stage. can be added. As a result, maxillary protrusion can be corrected reliably and early.

Here, since the projection group 27 is formed on the outer peripheral lower front surface portion 22, the front side of the outer peripheral lower front surface portion 22 is less likely to be subjected to a pressing force from the user's lower lip, thereby enhancing the effect of correcting maxillary protrusion. be able to. In addition, since the outer peripheral lower front surface portion 22 is formed thicker than the outer peripheral upper front surface portion 31, it is possible to firmly hold the lower jaw front surface, and the upper jaw front surface is located on the front side by a predetermined amount from the lower jaw front surface. It can be corrected to the ideal position.

In addition, an upper tooth row incisor placement portion 11c in the base portion 11 where the upper tooth row incisor teeth 1a face (here, contact) and a lower tooth row where the lower tooth row face and face incisor teeth 1b. The thickness L between the incisor arrangement portions 11d is the difference between the portion where the other tooth of the upper tooth row faces (here, does not contact) and the portion where the other tooth of the lower tooth row faces (here, does not contact). Since the upper and lower incisors 1a and 1b are formed to be thicker than the thickness between them, the upper and lower incisors 1a and 1b are brought into contact with the base portion 11 to push down the incisor 1a of the upper tooth row of the user with maxillary protrusion to the upper position. In addition to making it easy to hold, it is possible to promote eruption without bringing upper and lower molars into contact with the base part 11 and applying pressure to the molars, thereby correcting deep occlusion of maxillary protrusion.

At the same time, the canines and molars on the left and right sides of the upper and lower teeth are brought into contact with the inner peripheral upper side slope 47a and the inner peripheral lower side slope 48a, so that the left and right canines of the upper and lower teeth are aligned. And the molars are guided by the inner circumference upper side slope 47a and the inner circumference lower side slope 48a and gradually widen in the lateral direction, and the crowding of the canines and molars on the left and right sides of the upper and lower teeth is corrected. becomes possible.

As described above, according to the orthodontic appliance 10 of the present embodiment, the inner peripheral lower wall 42 includes the inner peripheral lower front surface portion 44 facing the incisor 1b teeth of the lower dentition and the inner peripheral lower front portion 44 facing the canines and molars of the lower dentition. and a lower side portion 48, and the lower side portion of the inner peripheral lower front surface portion 44 is formed so as to extend below the lower side portion of the inner peripheral lower side portion 48, so that the user of the maxillary protrusion can enter the oral cavity. When inserting, the lower part of the inner peripheral lower front part 44 serves as a guide to be inserted into the back side of the lower incisor 1b of the lower tooth row, so even a user with maxillary protrusion can wear it very easily. can heighten your senses.

In addition, according to this embodiment, the outer peripheral upper wall 30 has an outer peripheral upper front surface portion 31 facing the upper incisor teeth 1a and an outer peripheral upper side surface portion 32 facing the canines and molars of the upper tooth row, Since the upper side portion of the outer peripheral upper front surface portion 31 is formed to extend upwardly than the upper side portion of the outer peripheral upper side surface portion 32, when a user with maxillary protrusion inserts into the oral cavity, the upper side of the outer peripheral upper front surface portion 31 Since the part serves as a guide to be inserted between the upper lip and the crown of the upper incisor 1a and the gingiva of the alveolar part, even a user with maxillary protrusion can wear it very easily, enhancing the feeling of wearing. be able to. In addition, since the upper side of the outer peripheral upper front face portion 31 can hold the front face of the maxilla in a wide range, it is possible to correct the protrusion of the maxillary head reliably and early.

Further, according to the present embodiment, since the front side of the outer peripheral lower front surface portion 22 is provided with the protrusion group 27 in which a large number of protrusions are formed in a belt shape in the lateral direction, the front side of the outer peripheral lower front surface portion 22 is positioned below the user. When the pressing force from the lips is applied, the user reflexively avoids it, and the maxillary protrusion can be corrected more reliably and early.

Further, according to the present embodiment, the outer peripheral lower front surface portion 22 is formed thicker than the outer peripheral upper front surface portion 31, so that the upper jaw front surface is located on the front side by a predetermined amount from the lower jaw front surface, which is ideal. It is possible to correct the position.

Further, according to the present embodiment, an upper tooth row incisor arrangement portion 11c in which the upper incisor teeth 1a of the base portion 11 face, and a lower tooth row incisor arrangement portion 11d in which the lower incisor teeth 1b face each other. The thickness between the upper and lower teeth is thicker than the thickness between the other teeth in the upper teeth and the other teeth in the lower teeth. The incisor teeth 1a of the upper dentition can be depressed to facilitate holding them in an upper position, and eruption can be promoted without applying pressure to the molars, thereby correcting deep occlusion of the maxillary protrusion.

Further, according to the present embodiment, since the lower inclined surface 46 is formed more rearward than the upper inclined surface 45, the front surface of the mandible, which is positioned behind the user of the maxillary protrusion, is forced from an early stage. By applying a force that guides the patient toward the front side, it is possible to correct the maxillary protrusion reliably and early.

Further, according to this embodiment, a plurality of marks 35 parallel to each other are formed in the upper part of the outer peripheral upper front face part 31 in the vertical direction at regular intervals, so that the length of the gums on the front face of the upper jaw of the user can be measured. By cutting and adjusting the vertical length of the outer peripheral upper front part 31 using the mark 35 correspondingly, the outer peripheral upper front part 31 can be vertically adjusted to the length of the gums on the front of the user's upper jaw. Since the length of the direction can be adapted, a feeling of wearing can be improved, and versatility can also be improved.

Further, according to this embodiment, the base portion 11 has the extension portion 11a formed so as to extend rearward from the rear end of the outer peripheral upper side surface portion 32 and the outer peripheral lower side surface portion 23. By cutting and adjusting the length of the extension portion 11a of the base portion 11 according to the length of the user's dentition, the length of the base portion 11 can be adapted to the length of the user's dentition. As a result, the feeling of wearing can be improved, and versatility can also be improved.

Further, according to the present embodiment, a plurality of parallel marks 11b are formed on the extension portion 11a at regular intervals in the extension direction, so that the extension portion 11a corresponds to the length of the user's dentition. can be adjusted by cutting using the mark 11b, and the length of the base portion 11 can be easily adapted to the length of the user's dentition.
[Other embodiments of the invention]
It goes without saying that the above-described embodiment is an example of the present invention and does not mean that the present invention is limited only to the above-described embodiment.

For example, in the above-described embodiment, an example in which a large number of protrusions 27 are formed in a band shape in the lateral direction on the front side of the outer peripheral lower front surface portion 22 has been described, but the present invention is not limited to this. Any number and arrangement of protrusions may be used as long as the user can reflexively avoid the pressing force from the user's lower lip.

In the above-described embodiment, the material and shape of the orthodontic appliance 10 may be made of any suitable material as long as it can be inserted into the oral cavity and has the same function.

1a upper incisor 1b lower incisor 10 orthodontic tool 11 base portion 11a extension 11b mark 11c upper incisor arrangement portion 11d lower incisor arrangement portion 20 outer peripheral wall 21 lower outer peripheral wall 22 Outer peripheral lower front surface 23 Outer peripheral lower side surface 27 Projection group 28 Outer peripheral lower back surface 30 Outer peripheral upper wall 31 Outer peripheral upper front surface 32 Outer peripheral upper side surface 33 Step 34 Notch 35 Mark 38 Outer peripheral upper back 40 Inner peripheral wall 41 Inside Peripheral upper wall 42 Inner peripheral lower wall 43 Inner peripheral upper front face 44 Inner peripheral lower front face 45 Upper inclined surface 46 Lower inclined surface 47 Inner peripheral upper side surface 47a Inner peripheral upper side inclined surface 48 Inner peripheral lower side surface 48a Inner periphery Lower side slope 49 Vent hole 50 Tongue spaces 51, 52 Both corners

In order to achieve such a task, the invention according to claim 1 is provided with a base part sandwiched between the upper tooth row of the upper jaw and the lower tooth row of the lower jaw and formed in a U-shape in plan view, and an outer periphery of the base part. The outer peripheral wall is provided on the edge side and protrudes in the vertical direction, and the inner peripheral wall is provided on the inner peripheral edge side of the base portion and protrudes in the vertical direction, and the outer peripheral wall is provided above the base portion. and an outer peripheral lower wall provided below the base portion, and the inner peripheral wall includes an inner peripheral upper wall provided above the base portion and an inner peripheral upper wall provided above the base portion. An inner peripheral lower wall provided downward, wherein the outer peripheral upper wall has an outer peripheral upper front face facing the plurality of incisors of the upper teeth and an outer peripheral upper side face facing the canines and molars of the upper teeth. The outer peripheral lower wall has an outer peripheral lower front face facing the plurality of incisors of the lower teeth, and an outer peripheral lower side face facing the canines and molars of the lower teeth, and the inner periphery The upper wall has an inner peripheral upper front face facing the plurality of incisors of the upper teeth and an inner peripheral upper side face facing the canines and molars of the upper teeth. It has an inner peripheral lower front face facing a plurality of incisors of the lower dentition and an inner peripheral lower side face facing the canines and molars of the lower dentition, wherein the inner peripheral lower front face and the inner peripheral lower side face is formed continuously, and the lower side portion of the inner peripheral lower front surface portion and the inner peripheral lower side surface are positioned below the lower side portion of the inner peripheral lower front surface portion and the inner peripheral lower side surface. By forming a stepped portion between the inner peripheral lower front surface portion and the lower side portion, the inner peripheral lower front surface portion is formed in a tongue shape extending downward, and the inner peripheral upper front surface portion extends from the upper side to the lower side. An upper sloped surface is formed such that the distance from the outer peripheral wall becomes narrower, while a lower sloped surface is formed such that the distance from the outer peripheral wall becomes narrower from the lower side to the upper side on the inner peripheral lower front side. The lower inclined surface is formed rearwardly of the upper inclined surface, and the inner peripheral lower front surface portion extends downward, so that the lower inclined surface is formed longer than the upper inclined surface. The dental orthodontic appliance is characterized by:

Further, the invention according to claim 2 is, in addition to the configuration according to claim 1, the horizontal position of the upper tooth row incisor arrangement portion of the base portion facing the incisor teeth of the upper tooth row and the lower tooth row. The thickness between the horizontal position of the lower teeth incisor arrangement portion where the incisors of the lower teeth face is the horizontal position of the part where the other teeth of the upper teeth face and the part where the other teeth of the lower teeth face is formed thicker than the thickness between the horizontal positions of the

In addition to the configuration according to any one of claims 1 to 4 , the invention according to claim 5 has marks parallel to each other at regular intervals in the upper part of the outer peripheral upper front part in the vertical direction. It is characterized by being formed in plurality.

Further, the invention according to claim 6 is, in addition to the configuration according to any one of claims 1 to 5 , the base portion is located rearward of the rear ends of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion. and an extension formed so as to extend into the body.

Moreover, the invention according to claim 7 is characterized in that, in addition to the configuration according to claim 6 , a plurality of parallel marks are formed on the extension part at regular intervals in the extension direction.

According to the first aspect of the invention, the inner peripheral lower wall has an inner peripheral lower front face facing the incisors of the lower teeth and an inner peripheral lower side face facing the canines and molars of the lower teeth. , the lower side of the inner peripheral lower front surface extends downward than the lower side of the inner peripheral lower side surface, so that when the user of the maxillary protrusion inserts it into the oral cavity, the inner peripheral lower front surface Since the lower part serves as a guide to be inserted into the back side of the incisors of the lower teeth, even a user with maxillary protrusion can wear it very easily, and the feeling of wearing can be enhanced.
Further, according to the first aspect of the invention, since the lower inclined surface is formed more rearward than the upper inclined surface, the front surface of the mandible located behind the user of maxillary protrusion can be removed at an early stage. By forcibly applying a guiding force from the front to the front side, it is possible to correct the maxillary protrusion reliably and early.

Further, according to the second aspect of the invention, the horizontal position of the upper tooth row incisor arrangement portion in the base portion where the incisor teeth of the upper tooth row face and the lower tooth row incisor teeth where the incisor teeth of the lower tooth row face The thickness between the horizontal positions of the placement portion is formed to be thicker than the thickness between the horizontal position where the other teeth of the upper tooth row face and the horizontal position where the other teeth of the lower tooth row face each other. This makes it possible to push down the upper incisors of the user of the maxillary protrusion to make it easier to hold them in the upper position, and to promote eruption without applying pressure to the molars, which results in a deep occlusion of the maxillary protrusion. can be corrected.

Further, according to the fifth aspect of the present invention, a plurality of marks parallel to each other are formed in the upper part of the outer peripheral upper front part in the vertical direction at regular intervals, so that the gums on the front surface of the upper jaw of the user can be By cutting and adjusting the vertical length of the front surface of the upper outer circumference corresponding to the length, the length of the upper front surface of the outer circumference is adjusted to the length of the gums on the front of the user's upper jaw. It is possible to adapt the length of the body to improve the feeling of wearing and to improve versatility.

Further, according to the sixth aspect of the present invention, the base portion has an extension portion formed to extend rearward from the rear ends of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion. By cutting and adjusting the length of the extension part according to the length of the user's dentition, the length of the base part can be adapted to the length of the user's dentition, and the feeling of wearing can be improved. In addition, versatility can be enhanced.

Further, according to the seventh aspect of the invention, a plurality of parallel marks are formed on the extension portion at regular intervals in the extension direction, so that the extension portion can be extended corresponding to the length of the user's tooth row. The length of the portion can be adjusted by cutting using markings to easily adapt the length of the base portion to the length of the user's dentition.

Claims (8)

a base portion sandwiched between the upper dentition of the upper jaw and the lower dentition of the lower jaw and formed in a U-shape in plan view;
an outer peripheral wall provided on the outer peripheral edge side of the base portion and protruding in the vertical direction;
an inner peripheral wall provided on the inner peripheral edge side of the base portion and protruding in the vertical direction,
The outer peripheral wall includes an outer peripheral upper wall provided above the base portion and an outer peripheral lower wall provided below the base portion,
The inner peripheral wall includes an inner peripheral upper wall provided above the base portion and an inner peripheral lower wall provided below the base portion,
The outer peripheral upper wall has an outer peripheral upper front face facing the incisors of the upper teeth and an outer peripheral upper side face facing the canines and molars of the upper teeth,
The outer peripheral lower wall has an outer peripheral lower front face facing the incisors of the lower teeth and an outer peripheral lower side face facing the canines and molars of the lower teeth,
The inner peripheral upper wall has an inner peripheral upper front face facing the incisors of the upper teeth and an inner peripheral upper side face facing the canines and molars of the upper teeth,
The inner peripheral lower wall has an inner peripheral lower front surface facing the incisors of the lower teeth and an inner peripheral lower side surface facing the canines and molars of the lower teeth,
An orthodontic appliance, wherein a lower side portion of the inner peripheral lower front surface portion is formed to extend downwardly from a lower side portion of the inner peripheral lower side surface portion. In the base portion, the thickness between the upper tooth row incisor arrangement portion facing the incisor teeth of the upper tooth row and the lower tooth row incisor arrangement portion facing the incisor teeth of the lower tooth row is 2. The orthodontic appliance according to claim 1, wherein the orthodontic appliance is formed to be thicker than the thickness between the portion where the other teeth face and the portion where the other teeth of the lower dentition face. 3. The orthodontic appliance according to claim 1, wherein a projection is formed on the front side of the outer peripheral lower front portion. The orthodontic appliance according to any one of claims 1 to 3, wherein the outer peripheral lower front face portion is formed thicker than the outer peripheral upper front face portion. The inner peripheral upper front surface is formed with an upper inclined surface such that the distance from the outer peripheral wall becomes narrower from the upper side to the lower side. A lower inclined surface is formed so that the distance from the outer peripheral wall is narrowed,
The orthodontic appliance according to any one of claims 1 to 4, wherein the lower inclined surface is formed rearwardly of the upper inclined surface. The orthodontic appliance according to any one of claims 1 to 5, wherein a plurality of marks parallel to each other are formed at regular intervals in the upper part of the outer peripheral upper front part in the vertical direction. 7. The base portion according to claim 1, wherein the base portion has an extension portion extending rearward from rear ends of the outer peripheral upper side portion and the outer peripheral lower side portion. The orthodontic appliance according to the item. 8. The orthodontic appliance according to claim 7, wherein a plurality of parallel marks are formed on the extension portion at regular intervals in the extension direction.

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