JP2022113270A - orthodontic appliance - Google Patents

Abstract

To provide an orthodontic appliance capable of correcting abnormal occlusion securely and early, and reducing discomfort feeling as much as possible when being attached to the oral cavity.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, projecting in a vertical direction and formed in a U-shape in plane view. Both U-shaped corner portions 51 of the inner peripheral wall 40 are each formed in positions corresponding to positions between left and right incisors of the upper tooth row and the lower tooth row, and left and right canine teeth of the upper tooth row and the lower tooth row.SELECTED DRAWING: Figure 5

Description

Applied for application of Article 30, Paragraph 2 of the Patent Act From August 28, 2020, distributed samples to medical corporation Kiseikai and general incorporated association Ichimeikai

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, with the conventional mouthpiece described in Patent Document 1 mentioned above, although the dentition of the incisors can be corrected without requiring a relatively long period of time, the force for widening the dentition in the lateral direction is weak. , there is a problem that it takes a long period of time to correct the dentition.

In addition, in a conventional mouthpiece, if the dentition is crowded, the tongue and perioral muscles may not be positioned in a harmonious position. Thus, perioral muscle imbalance can contribute to malocclusion. In addition, when the user attempts to insert the conventional mouthpiece into the oral cavity, it is difficult to wear the mouthpiece if the user's teeth are crowded, and there is a problem that the user feels discomfort when wearing the mouthpiece. be.

The present invention has been made in view of such problems, and provides an orthodontic appliance that can correct malocclusion reliably and early, and that can reduce discomfort as much as possible when worn in the oral cavity. The challenge is to

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. An outer peripheral wall provided on the edge side and protruding in the vertical direction, and an inner peripheral wall provided on the inner peripheral edge side of the base portion and protruding in the vertical direction and formed in a U shape in plan view, wherein the inner peripheral wall has a corner. Both corners of the character are formed at positions corresponding to the positions between the left and right incisors of the upper and lower teeth and the left and right canines of the upper and lower teeth. characterized by

Further, according to the second aspect of the invention, in addition to the configuration of the first aspect, the inner peripheral wall includes an inner peripheral upper wall provided above the base portion and an inner peripheral upper wall provided below the base portion. The inner peripheral upper wall includes an inner peripheral upper front surface formed between both corners of the U-shape, and the left and right canine teeth of both corners of the U-shape. The lower wall includes an inner peripheral lower front surface formed between both corners of the U-shape, and left and right corners of the U-shape. and an inner peripheral lower side surface portion formed on the canine tooth side of the inner peripheral upper front surface portion, the inner peripheral upper front surface portion being capable of contacting the incisor teeth of the upper tooth row. A front upper inclined surface is formed so as to narrow the distance from the wall, and the inner peripheral lower front surface can contact the incisor teeth of the lower tooth row, and the outer peripheral wall increases from the lower side to the upper side. The inner peripheral upper side surface is capable of contacting the canines and molars of the upper tooth row, and the outer peripheral wall moves from the upper side to the lower side. An inner peripheral upper side slope is formed such that the distance between the An inner circumference lower side slope is formed so that the distance from the outer peripheral wall is narrower, the front upper slope is formed to have a gentler inclination angle than the inner circumference upper side slope, and the front lower side The inclined surface is formed so as to have a gentler inclination angle than the inclined surface of the inner peripheral lower side surface.

Further, the invention according to claim 3 is, in addition to the configuration according to claim 1 or 2, the outer peripheral wall includes an outer peripheral upper wall provided above the base portion and an outer peripheral upper wall provided below the base portion. The outer peripheral upper wall has an outer peripheral upper front surface facing the incisors of the upper teeth and an outer peripheral upper side surface facing the canines and molars of the upper teeth, An upper side portion of the outer peripheral upper front portion is formed so as to extend higher than an upper side portion of the outer peripheral upper side surface portion.

The invention according to claim 4 is characterized in that, in addition to the configuration according to claim 3, the outer peripheral lower wall comprises: an outer peripheral lower front face facing the incisors of the lower dentition; and a lower outer peripheral side face facing the outer peripheral lower front face, and a protrusion is formed on the outer peripheral lower front face.

Moreover, the invention according to claim 5 is characterized in that, in addition to the configuration according to claim 4, the outer peripheral lower front surface is formed thicker than the outer peripheral upper front surface.

Further, the invention according to claim 6, in addition to the configuration according to any one of claims 3 to 5, has a plurality of marks parallel to each other in the vertical direction at regular intervals on the outer peripheral upper front surface. characterized by being formed

Further, the invention according to claim 7 is, in addition to the configuration according to any one of claims 4 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. An extension is formed so as to extend in the direction of extension, and a plurality of marks parallel to each other with respect to the extension direction are formed at regular intervals on the extension.

Further, according to the invention of claim 8, in addition to the configuration of any one of claims 2 to 7, the front lower sloped surface is formed rearward of the front upper sloped surface. Characterized by

According to the first aspect of the present invention, since the inner peripheral wall is formed in a U-shape in plan view, the force for widening the row of teeth in the lateral direction is increased, and malocclusion can be corrected reliably and early. . Both corners of the U-shaped inner peripheral wall are formed at positions corresponding to the positions between the left and right incisors of the upper and lower teeth and the left and right canines of the upper and lower teeth. Therefore, it is possible to match the characteristics of the way the upper teeth and the lower teeth grow, so that it is possible to reduce discomfort as much as possible when worn in the oral cavity.

Further, according to the second aspect of the invention, the front upper inclined surface is formed to have a gentler inclination angle than the inner peripheral upper side slope, and the front lower inclined surface is formed on the inner peripheral lower side surface. Since it is formed so that the angle of inclination is gentler than that of the slope, it is possible to reliably match the characteristics of how the upper and lower teeth grow. As a result, it is possible to minimize the sense of discomfort when the device is worn in the oral cavity.

Further, according to the third aspect of the present invention, the upper side portion of the outer peripheral upper front portion is formed to extend higher than the upper side portion of the outer peripheral upper side portion, so that the user can insert it into the oral cavity. In this case, the upper part of the upper front part of the outer periphery serves as a guide to be inserted between the upper lip and the crown of the maxillary incisor and the alveolar gingiva, so even users with malocclusion can wear it very easily. A feeling of wearing can be improved.

Further, according to the fourth aspect of the present invention, since the projection is formed on the outer peripheral lower front surface, the front side of the outer peripheral lower front surface is less likely to be pressed by the lower lip of the user. It is possible to more reliably and early correct malocclusion including maxillary protrusion.

Further, according to the fifth aspect of the invention, since the outer peripheral lower front surface is formed to be thicker than the outer peripheral upper front surface, the front surface of the mandible can be firmly held. It becomes possible to correct malocclusion more reliably and early.

According to the sixth aspect of the present invention, a plurality of marks parallel to each other are formed on the front surface of the outer peripheral upper 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 easily detected. Corresponding to the length, the vertical length of the front surface of the upper outer circumference is adjusted by cutting using a mark, so that the length of the upper front surface of the outer circumference corresponds to the length of the gums on the front of the user's upper jaw. The length can be adapted, the feeling of wearing can be improved, and the versatility as a device can be improved.

Further, according to the seventh aspect of the invention, the base portion is formed with an extension portion extending rearward from the rear end of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion. By forming a plurality of marks parallel to each other at regular intervals, by cutting and adjusting the length of the base portion according to the length of the user's dentition, the user's dentition can be adjusted. The length of the base portion can be adapted to the length of the device, and the feeling of wearing can be improved, and the versatility as a device can also be improved.

In addition, according to the eighth aspect of the invention, the front lower slanted surface is formed more rearward than the front upper slanted surface, so that the front surface of the upper jaw is forced against the front surface of the lower jaw of the user with malocclusion. By guiding them to the front side, the mandibular incisors and the maxillary incisors can be corrected to appropriate positions, and malocclusion can be corrected reliably and early.

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. 3 is a cross-sectional view taken along line IV-IV of FIG. 2; FIG. 2 is a plan view of FIG. 1; 2 is a bottom view of FIG. 1; FIG.

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]
1-6 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 cross-sectional view taken along line IV-IV of FIG. 2. FIG. 5 is a plan view of FIG. 1. FIG. 6 is a bottom view of FIG. 1. 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 6, is a mouthpiece type to be 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. It corrects malocclusion by guiding individual teeth in the direction in which they should be aligned. Here, the above-mentioned malocclusion refers to maxillary protrusion (buck teeth) in which the maxillary incisors protrude forward, mandibular protrusion (recess) in which the mandibular anterior teeth protrude forward, and the direction in which the teeth grow. It refers to crowding in which the teeth are twisted or overlapped instead of in the correct direction, or an open bite in which the upper and lower teeth do not mesh.

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 resin, polyolefin resin, styrene resin, acrylic resin, polycarbonate resin, polypropylene resin, elastomer, or 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 to form a U-shape in plan view. The base portion 11 includes an incisor contact range R1 with which the left and right incisors of the upper and lower teeth abut, and left and right canine and molar contacts with which the left and right canines and molars of the upper and lower teeth abut. A 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 upper wall 21 provided above the base portion 11 and an outer peripheral lower wall 30 provided below the base portion 11 . The outer peripheral upper wall 21 and the outer peripheral lower wall 30 are formed in a bilaterally symmetrical shape centering on the portion corresponding to the central incisor.

The outer peripheral upper wall 21 is continuously formed with an outer peripheral upper front surface portion 22 facing the incisors of the upper teeth and left and right outer peripheral upper side portions 23 facing the canines and molars of the upper teeth. The outer peripheral upper wall 21 is formed so that the outer peripheral upper front surface portion 22 on the incisor side is higher than the outer peripheral upper side surface portion 23 on the canine and molar side from the base portion 11 . Therefore, the outer peripheral upper wall 21 is formed with a pair of left and right stepped portions 24 at symmetrical positions between the outer peripheral upper front surface portion 22 and the outer peripheral upper side surface portion 23 to avoid the buccal frenulum.

A front view V-shaped notch portion 25 into which the upper lip frenulum is fitted is formed in the outer peripheral upper front face portion 22 of the outer peripheral upper wall 21 at the center in the left-right direction. The notch portion 25 is cut downward from the upper side of the outer peripheral upper front surface portion 22 . On the left and right sides of the notch 25, a plurality of marks 26 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 26 are formed in grooves, for example, and can be easily cut using a cutting tool such as scissors. The outer peripheral upper front surface portion 22 is formed so that its upper side portion extends upward from the upper side portion of the outer peripheral upper side surface portion 23 .

The outer peripheral lower wall 30 is continuously formed with an outer peripheral lower front surface portion 31 facing the incisors of the lower teeth and left and right outer peripheral lower side portions 32 facing the canines and molars of the lower teeth. The outer peripheral lower wall 30 is formed so as to gradually rise from the lower side of the outer peripheral lower front face portion 31 on the incisor side to the lower edge of the outer peripheral lower side surface portion 32 on the canine and molar side. That is, the outer peripheral lower side surface portion 32 is formed so as to gradually incline downward from the rearmost position to the outer peripheral lower front surface portion 31 . A plurality of U-shaped vertical display grooves 33 are provided at regular intervals in the lower side portion of the outer peripheral lower front surface portion 31 .

A group of protrusions 27 are provided in a band shape in the lateral direction on the outer peripheral lower front surface portion 31 . 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. The outer peripheral lower front surface portion 31 is formed narrower than the outer peripheral upper front surface portion 22 as shown in FIG. The outer peripheral upper front surface portion 22 and the outer peripheral lower front surface portion 31 are each formed so as to be slightly slanted rearward with a ventilation hole 49 to be described later as a boundary therebetween. The rear surface side of the outer peripheral lower front surface portion 31 becomes an outer peripheral lower rear surface portion 38 formed in a substantially planar shape as shown in FIG. 4 . Further, the back side of the outer peripheral upper front face portion 22 becomes an outer peripheral upper back face portion 28 formed in a substantially planar shape.

As shown in FIG. 4 , the outer peripheral lower front surface portion 31 is formed to be twice as thick as the outer peripheral upper front surface portion 22 . The outer peripheral lower front surface portion 31 is inclined rearward at substantially the same angle on the rear surface side as on the front surface side. As a result, the outer peripheral lower front surface portion 31 is formed to have substantially the same thickness from the base portion 11 to the lower side.

In addition, as shown in FIG. 4 , the outer peripheral lower back portion 38 is arranged behind the outer peripheral upper back portion 28 , that is, on the molar side. As a result, by forcibly guiding the maxillary incisor 1b forward of the mandibular incisor 1a, malocclusion including mandibular protrusion can be corrected more reliably and early. I have to.

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 incisors of the upper tooth row formed between the two corners 51, 51 of the U-shape, while the inner peripheral lower wall 42 has an inner peripheral lower wall 42 as shown in FIG. As shown, it has an inner peripheral lower front surface 44 facing the incisors of the lower teeth formed between the two corners 52, 52 of the U-shape.

The inner peripheral upper front face portion 43 can contact the incisor teeth of the upper tooth row, and as shown in FIGS. While the upper inclined surface 45 is formed, the inner peripheral lower front surface 44 can contact the incisor teeth 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 front lower inclined surface 46 is formed, and the front lower inclined surface 46 is formed rearward of the front upper inclined surface 45 . The inclination angle of the front upper inclined surface 45 is 35 to 45 degrees with respect to the base portion 11, preferably 40 degrees. In this case, if the inclination angle of the front 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, and eventually the temporomandibular joint. It is a factor that causes illness.

Also, the inclination angle of the front 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 inclination angle of the front lower inclined surface 46 is less than 32 degrees, the correction effect is lost, and if it exceeds 42 degrees, it is difficult to wear unless the chin is shifted. , which in turn causes temporomandibular disorders.

Therefore, when the orthodontic appliance 10 is worn in the oral cavity, the upper incisors 1b of the upper jaw enter between the front upper inclined surface 45 and the outer peripheral upper wall 21, and the space between the front lower inclined surface 46 and the outer peripheral lower wall 30. The incisor tooth 1a on the mandibular side is inserted into.

As shown in FIGS. 5 and 6, the inner peripheral upper wall 41 is formed on the left and right canine sides of the U-shaped corners 51, 51, and has inner peripheral upper side walls 47 facing the canines and molars of the upper teeth. On the other hand, the inner peripheral lower wall 42 has an inner peripheral lower side surface 48 formed on the left and right canine side of both corners 52, 52 of the U-shape and facing the canines and molars of the lower row of teeth. . The inner peripheral upper side surface portion 47 has an inner peripheral upper side sloped surface 47a formed 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 formed on the outer peripheral lower side surface portion 32 side. is formed. The inner peripheral upper side slope 47a and the inner peripheral lower side slope 48a are formed to widen the teeth in the lateral direction and to correct the teeth when the baby teeth are replaced by the permanent teeth.

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. .

Between the front upper inclined surface 45 and the front 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 continuously formed from each inner surface of the front upper inclined surface 45 and the front lower inclined surface 46 to each inner surface of the inner peripheral upper side surface portion 47 and the inner peripheral lower side surface portion 48. The tongue space 50 is It has the function of positioning the user's tongue in a precise 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 in plan view. 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. A front upper inclined surface 45 of the inner peripheral upper wall 41 and a front 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 peripheral upper 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 peripheral upper wall 41 is formed such that the inclination angle of the front upper inclined surface 45 is gentler than that of the inner peripheral upper side inclined surface 47a. Similarly, as shown in FIG. 6, the inner peripheral lower wall 42 is formed so that the inclination angle of the front lower inclined surface 46 is gentler than that of the inner peripheral lower side inclined surface 48a. Thereby, it is configured 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 part 22 is adjusted by cutting using the mark 26 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 malocclusion, and attached to the upper and lower dentitions. At this time, since the upper side of the outer peripheral upper front part 22 serves as a guide to be inserted between the upper lip and the crown of the maxillary incisor and the alveolar gingiva, even a user with malocclusion can wear it very easily. can. When worn, the incisors of the upper and lower teeth abut against the front upper sloping surface 45 and the front lower sloping surface 46 of the inner peripheral wall 40 . 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.

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

In this case, since the front lower inclined surface 46 is formed behind the front upper inclined surface 45, it is possible to forcibly guide the front surface of the upper jaw to the front side with respect to the front surface of the mandible of the user of mandibular protrusion. becomes. At the same time, the outer peripheral lower back portion 38 is arranged behind the outer peripheral upper back portion 28, and the incisor teeth 1b on the maxillary side are forcibly guided forward of the incisor teeth 1a on the mandibular side. Malocclusion including protrusion can be corrected more reliably and early.

Here, since the projection group 27 is formed on the outer peripheral lower front surface portion 31, the pressing force from the user's lower lip is less likely to be applied to the outer peripheral lower front surface portion 31, and the effect of correcting malocclusion including mandibular protrusion is improved. can be enhanced. In addition, since the outer peripheral lower front surface part 31 is formed thicker than the outer peripheral upper front surface part 22, it is possible to firmly hold the front surface of the mandible, further enhancing the effect of correcting malocclusion including mandibular protrusion. be able to.

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 peripheral upper side slope 47a and the inner peripheral lower side slope 48a and gradually widen in the lateral direction. It becomes possible to correct the occlusion.

As described above, according to the orthodontic appliance 10 of the present embodiment, since the inner peripheral wall 40 is formed in a U-shape in plan view, the force for widening the row of teeth in the lateral direction is increased, and malocclusion can be reliably and early performed. can be corrected. The U-shaped corners 51 and 52 of the inner peripheral wall 40 are positioned between the left and right incisors of the upper and lower teeth and the left and right canines of the upper and lower teeth. Since it is formed separately, it is possible to match the characteristics of the way the upper teeth and the lower teeth grow, so that it is possible to reduce discomfort as much as possible when worn in the oral cavity.

Further, according to the present embodiment, the front upper inclined surface 45 is formed to have a gentler inclination angle than the inner peripheral upper side inclined surface 47a, and the front lower inclined surface 46 has an inner peripheral lower side inclined surface 47a. Since it is formed so that the angle of inclination is gentler than that of 48a, it can be reliably adapted to the characteristics of how the upper and lower teeth grow. As a result, it is possible to minimize the sense of discomfort when the device is worn in the oral cavity.

Further, according to the present embodiment, the front upper sloping surface 45, the front lower sloping surface 46, the inner peripheral upper side slope 47a, and the inner peripheral lower side slope 48a are formed, so that the upper tooth row and the lower tooth row are formed. It is possible to spread laterally, correct the upper and lower teeth, and adjust the muscle function of the perioral muscles.

Further, according to the present embodiment, the upper side portion of the outer peripheral upper front portion 22 is formed so as to extend above the upper side portion of the outer peripheral upper side surface portion 23, so that when the user inserts into the oral cavity, Since the upper side of the outer peripheral upper front part 22 serves as a guide to be inserted between the upper lip and the crown of the maxillary incisor and the alveolar gingiva, even a user with malocclusion can wear it very easily. can heighten your senses.

In addition, according to the present embodiment, since the outer peripheral lower front surface portion 31 is provided with a large number of protrusion groups 27 formed in a band shape in the lateral direction, the outer peripheral lower front surface portion 31 is subjected to a pressing force from the user's lower lip. When added, the user reflexively avoids it, and it becomes possible to correct malocclusion including maxillary protrusion more reliably and early.

Further, according to the present embodiment, the outer peripheral lower front surface portion 31 is formed to be thicker than the outer peripheral upper front surface portion 22, so that the front surface of the mandible can be firmly held. It becomes possible to correct malocclusion more reliably and early.

Further, according to the present embodiment, a plurality of marks 26 parallel to each other are formed in the upper part of the outer peripheral upper front part 22 in the vertical direction at regular intervals. By cutting and adjusting the vertical length of the outer peripheral upper front part 22 using the mark 26 correspondingly, the outer peripheral upper front part 22 can be vertically adjusted to the length of the gums on the front of the user's upper jaw. Since the length in the direction can be adjusted, the feeling of wearing can be enhanced, and the versatility as an instrument can be enhanced.

Further, according to the present embodiment, the base portion 11 is formed with the extension portion 11a extending rearward from the rear end of the outer peripheral upper side surface portion 23 and the outer peripheral lower side surface portion 32, and the extension portion 11a extends in the extending direction. A plurality of marks 11b parallel to each other are formed at regular intervals, so that the length of the base portion 11 can be cut and adjusted according to the length of the user's tooth row, thereby allowing the user's teeth to be adjusted. The length of the base portion 11 can be adapted to the length of the row, so that the feeling of wearing can be improved, and the versatility as a device can also be improved.

Further, according to the present embodiment, the front lower inclined surface 46 is formed more rearward than the front upper inclined surface 45, so that the front surface of the upper jaw is forced to face the front side of the lower jaw of the user with malocclusion. , the mandibular side incisor 1a and the maxillary side incisor 1b can be corrected to appropriate positions, and malocclusion can be corrected reliably and early.
[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, the example in which the protrusion group 27 in which a large number of protrusions are formed in a belt shape in the lateral direction is provided on the outer peripheral lower front surface portion 31 is described. Any number and arrangement of protrusions may be used as long as the user can reflexively avoid the pressing force applied from the lips.

In the above 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 mandibular incisor 1b maxillary incisor 10 orthodontic tool 11 base portion 11a extension 11b mark 20 outer peripheral wall 21 outer peripheral upper wall 22 outer peripheral upper front surface 23 outer peripheral upper side surface 24 stepped portion 25 notch 26 mark 27 Projection group 28 Outer peripheral upper back surface 30 Outer peripheral lower wall 31 Outer peripheral lower front surface 32 Outer peripheral lower side surface 33 Upper/lower display groove 38 Outer peripheral lower back surface 40 Inner peripheral wall 41 Inner peripheral upper wall 42 Inner peripheral lower wall 43 Inner peripheral upper front face 44 Inner peripheral lower front surface 45 Front upper inclined surface 46 Front lower inclined surface 47 Inner peripheral upper side surface 47a Inner peripheral upper side inclined surface 48 Inner peripheral lower side surface 48a Inner peripheral lower side inclined surface 49 Ventilation hole 50 Tongue space 51 Corner Part 52 corner

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. An outer peripheral wall provided on the edge side and protruding in the vertical direction, and an inner peripheral wall provided on the inner peripheral edge side of the base portion and protruding in the vertical direction and formed in a U shape in plan view, wherein the inner peripheral wall has a corner. Both corners of the letter are formed at positions corresponding to the positions between the left and right incisors of the upper and lower teeth and the left and right canines of the upper and lower teeth . The peripheral wall includes an inner peripheral upper wall provided above the base portion and an inner peripheral lower wall provided below the base portion. an inner peripheral upper front face formed between the two corners of the U-shaped portion; and an inner peripheral lower front surface formed between both corners of the U-shape and inner peripheral lower side surfaces formed on the left and right canine tooth sides of both corners of the U-shape, and the inner peripheral upper front surface The portion is formed with a front upper inclined surface that can be contacted by the incisor teeth of the upper tooth row and that the distance from the outer peripheral wall becomes narrower from the upper side to the lower side that contacts the base portion. The inner peripheral lower front surface has a front lower inclined surface that can be contacted by the incisors of the lower tooth row, and the distance from the outer peripheral wall decreases from the lower side to the upper side that contacts the base portion. The inner peripheral upper side surface portion is capable of contacting the canines and molars of the upper tooth row, and the distance from the outer peripheral wall becomes narrower from the upper side to the lower side contacting the base portion. An inner peripheral upper side slope is formed, and the inner peripheral lower side can contact the canines and molars of the lower tooth row, and the inner peripheral lower side is inclined with the outer peripheral wall as it goes from the lower side to the upper side in contact with the base portion. The inner circumference lower side slopes are formed so that the interval between is narrow, the front upper slope is formed so that the inclination angle is gentler than the inner periphery upper side slopes, and the front lower slope is , and is formed so as to have a gentler inclination angle than the slope of the inner peripheral lower side surface .

Further, according to the invention of claim 2 , in addition to the configuration of claim 1 , the outer peripheral wall includes an outer peripheral upper wall provided above the base portion and an outer peripheral upper 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 periphery An upper side portion of the upper front portion is formed to extend upwardly from an upper side portion of the outer peripheral upper side portion.

The invention according to claim 3 , in addition to the configuration according to claim 2 , is characterized in that the lower outer peripheral wall includes a lower outer peripheral front face facing the incisors of the lower teeth, the canines and molars of the lower teeth. and a lower outer peripheral side face facing the outer peripheral lower front face, and a protrusion is formed on the outer peripheral lower front face.

Moreover, the invention according to claim 4 is characterized in that, in addition to the configuration according to claim 3 , the outer peripheral lower front face portion is formed thicker than the outer peripheral upper front face portion.

Further, the invention according to claim 5 , in addition to the configuration according to any one of claims 2 to 4 , has a plurality of marks parallel to each other in the vertical direction at regular intervals on the outer peripheral upper front surface. characterized by being formed

Further, the invention according to claim 6 is, in addition to the configuration according to any one of claims 3 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. An extension is formed so as to extend in the direction of extension, and a plurality of marks parallel to each other with respect to the extension direction are formed at regular intervals on the extension.

The invention according to claim 7 , in addition to the configuration according to any one of claims 1 to 6 , is characterized in that the front lower inclined surface is formed rearward of the front upper inclined surface. Characterized by

According to the first aspect of the present invention, since the inner peripheral wall is formed in a U-shape in plan view, the force for widening the row of teeth in the lateral direction is increased, and malocclusion can be corrected reliably and early. At the same time, the tongue can be constrained in the correct position, and muscle functions around the oral cavity can be further adjusted . Both corners of the U-shaped inner peripheral wall are formed at positions corresponding to the positions between the left and right incisors of the upper and lower teeth and the left and right canines of the upper and lower teeth. As a result, the orthodontic appliance can be adapted to the characteristics of the way the upper and lower teeth grow, so that discomfort can be minimized when the orthodontic appliance is worn in the oral cavity.
Further, according to the first aspect of the present invention, the front upper inclined surface is formed to have a gentler inclination angle than the inner peripheral upper side slope, and the front lower inclined surface is formed at the inner peripheral lower side surface. Since it is formed so that the inclination angle is gentler than the slope, the characteristics of the incisors of the upper and lower teeth and the canines and molars of the upper and lower teeth are different from each other. It can be reliably adapted to the growing angle. As a result, it is possible to minimize discomfort when wearing the orthodontic appliance in the oral cavity, improve the feeling of wearing the orthodontic appliance, and further enhance the effects of enlarging and correcting the permanent dentition.
Furthermore, according to the first aspect of the invention, the inner peripheral wall is formed in a U-shape in plan view, and both corners of the U-shape are formed by the left and right incisors of the upper and lower teeth and the upper teeth. Formed at positions corresponding to the left and right canine teeth of the row and the lower tooth row, respectively, the front upper inclined surface is formed so that the inclination angle is gentler than the inner peripheral upper side surface inclined surface, and the front lower inclined surface is formed so that the angle of inclination is gentler than that of the inner circumference lower side slope, for example, when the primary teeth erupt into the permanent teeth, the upper teeth form the front upper slope and the inner circumference upper side slope. At the same time, the lower teeth contact the front lower slope and the inner peripheral lower side slope to widen the permanent teeth in the lateral direction, correct the teeth, and improve the muscle function around the oral cavity. It becomes possible.

Further, according to the second aspect of the present invention, the upper side of the outer peripheral upper front surface is formed to extend higher than the upper side of the outer peripheral upper side surface, so that the user can insert it into the oral cavity. In this case, the upper part of the upper front part of the outer periphery serves as a guide to be inserted between the upper lip and the crown of the maxillary incisor and the alveolar gingiva, so even users with malocclusion can wear it very easily. A feeling of wearing can be improved.

In addition, according to the third aspect of the present invention, since the protrusion is formed on the outer peripheral lower front portion, the front side of the outer peripheral lower front portion is less likely to be pressed by the user's lower lip. It is possible to more reliably and early correct malocclusion including maxillary protrusion.

Further, according to the fourth aspect of the invention, since the outer peripheral lower front surface is formed thicker than the outer peripheral upper front surface, the front surface of the mandible can be firmly held. It becomes possible to correct malocclusion more reliably and early.

Further, according to the fifth aspect of the present invention, a plurality of marks parallel to each other are formed at regular intervals in the vertical direction on the front surface of the outer peripheral upper part, so that the gums on the front surface of the upper jaw of the user can be easily detected. Corresponding to the length, the vertical length of the front surface of the upper outer circumference is adjusted by cutting using a mark, so that the length of the upper front surface of the outer circumference corresponds to the length of the gums on the front of the user's upper jaw. The length can be adapted, the feeling of wearing can be improved, and the versatility as a device can be improved.

According to the sixth aspect of the present invention, the base portion has an extension portion extending rearward from the rear end of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion. By forming a plurality of marks parallel to each other at regular intervals, by cutting and adjusting the length of the base portion according to the length of the user's dentition, the user's dentition can be adjusted. The length of the base portion can be adapted to the length of the device, and the feeling of wearing can be improved, and the versatility as a device can also be improved.

In addition, according to the seventh aspect of the invention, the front lower inclined surface is formed rearwardly of the front upper inclined surface, so that the front upper jaw is forced against the front lower jaw of the user with malocclusion. By guiding them to the front side, the mandibular incisors and the maxillary incisors can be corrected to appropriate positions, and malocclusion can be corrected reliably and early.

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. An outer peripheral wall provided on the edge side and protruding in the vertical direction, and an inner peripheral wall provided on the inner peripheral edge side of the base portion and protruding in the vertical direction and formed in a U shape in plan view, the inner peripheral wall comprising : An inner peripheral upper wall provided above the base portion and an inner peripheral lower wall provided below the base portion, wherein the inner peripheral upper wall is located between both corners of the U-shape and an inner peripheral upper side surface portion formed on each of the left and right canine teeth sides of both corners of the U-shape, and the outer peripheral wall is above the base portion and an outer peripheral lower wall provided below the base portion, wherein the outer peripheral upper wall includes an outer peripheral upper front face facing the incisors of the upper tooth row and the upper tooth and an outer peripheral upper front face portion facing the row of canines and molars, the upper peripheral upper front face portion being formed to extend above the upper side portion of the outer peripheral upper front face portion, and the outer peripheral upper front face portion A plurality of marks parallel to each other are formed in the vertical direction at regular intervals .

Further, the invention according to claim 2 comprises a base part sandwiched between the upper teeth of the upper jaw and the lower teeth of the lower jaw and formed in a U-shape in a plan view; and an inner peripheral wall provided on the inner peripheral edge side of the base portion and protruding in the vertical direction and formed in a U-shape in plan view, wherein the outer peripheral wall is above the base portion. and an outer peripheral lower wall provided below the base portion, wherein the outer peripheral upper wall includes an outer peripheral upper front face facing the incisors of the upper tooth row and the upper tooth The peripheral lower wall has a peripheral lower front face facing the incisors of the lower row of teeth and a lower peripheral front facing the canines and molars of the lower row of teeth. and a side surface portion, wherein the base portion is formed with an extension portion extending rearward from the rear ends of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion, and the extension portion is provided with respect to the extension direction A plurality of marks parallel to each other are formed at regular intervals .

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

Moreover, the invention according to claim 4 is characterized in that, in addition to the configuration according to claim 2 or 3, the outer peripheral lower front surface is formed thicker than the outer peripheral upper front surface.

Further, according to the invention of claim 5 , in addition to the configuration of claim 1 , the inner peripheral lower wall includes an inner peripheral lower front surface formed between both corners of the U-shape and the corners. an inner peripheral lower side surface portion formed on each of the left and right canine tooth sides of both corners of the letter shape, and the inner peripheral upper front surface portion is capable of contacting the incisors of the upper tooth row, A front upper inclined surface is formed such that the distance from the outer peripheral wall becomes narrower from the upper side toward the lower side contacting the base, and the inner peripheral lower front surface can contact the incisors of the lower tooth row. A front lower sloped surface is formed such that the distance from the outer peripheral wall becomes narrower from the lower side toward the upper side that contacts the base portion, and the front lower sloped surface is positioned rearwardly of the front upper sloped surface. characterized by being formed

According to the first aspect of the present invention, since the inner peripheral wall is formed in a U-shape in plan view, the force for widening the row of teeth in the lateral direction is increased, and malocclusion can be corrected reliably and early. At the same time, the tongue can be constrained in the correct position, and muscle functions around the oral cavity can be further adjusted.
Further, according to the first aspect of the invention, the upper side portion of the outer peripheral upper front portion is formed to extend higher than the upper side portion of the outer peripheral upper side portion, so that the user can insert it into the oral cavity. In this case, the upper part of the upper front part of the outer periphery serves as a guide to be inserted between the upper lip and the crown of the maxillary incisor and the alveolar gingiva, so even users with malocclusion can wear it very easily. A feeling of wearing can be improved.
Furthermore, according to the first aspect of the present invention, a plurality of marks parallel to each other are formed in the upper front portion of the outer periphery at regular intervals in the vertical direction, so that the gums on the front surface of the upper jaw of the user can be improved. Corresponding to the length, the vertical length of the front surface of the upper outer circumference is adjusted by cutting using a mark, so that the length of the upper front surface of the outer circumference corresponds to the length of the gums on the front of the user's upper jaw. The length can be adapted, the feeling of wearing can be improved, and the versatility as a device can be improved.

According to the second aspect of the invention, the base portion is formed with an extension extending rearward from the rear end of the outer peripheral upper side surface and the outer peripheral lower side surface. By forming a plurality of marks parallel to each other at regular intervals, by cutting and adjusting the length of the base part according to the length of the user's tooth row, the user's The length of the base part can be adapted to the length of the dentition, and the feeling of wearing can be improved, and the versatility as an appliance can also be improved.

In addition, according to the fifth aspect of the invention, the front lower slanted surface is formed more rearward than the front upper slanted surface, so that the front surface of the upper jaw is forced against the front surface of the lower jaw of the user with malocclusion. By guiding them to the front side, the mandibular incisors and the maxillary incisors can be corrected to appropriate positions, and malocclusion can be corrected reliably and early.

The invention according to claim 2 is characterized in that, in addition to the configuration according to claim 1, the outer peripheral lower wall includes: an outer peripheral lower front face facing the incisors of the lower teeth; and an outer peripheral lower side surface facing the base portion, the extension portion is formed so as to extend rearward from the rear ends of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion, and the extension portion includes: It is characterized in that a plurality of marks are formed at regular intervals in parallel with each other with respect to the extension direction.

Claims (8)

a base portion sandwiched between the upper teeth of the upper jaw and the lower teeth 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 and formed in a U shape in plan view,
Both corners of the U-shaped inner peripheral wall are positioned between the left and right incisors of the upper and lower teeth and the left and right canines of the upper and lower teeth, respectively. An orthodontic appliance characterized by being formed. 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 inner peripheral upper wall includes an inner peripheral upper front face portion formed between both corners of the U-shape, and an inner peripheral upper side surface portion formed on each of the left and right canine teeth sides of both corners of the U-shape. and
The lower wall has an inner peripheral lower front surface portion formed between both corners of the U-shape and inner peripheral lower side portions formed on the left and right canine side of both corners of the U-shape. have
The inner peripheral upper front surface is formed with a front upper inclined surface that can be contacted by the incisor teeth of the upper tooth row and that the distance from the outer peripheral wall becomes narrower from the upper side to the lower side,
The inner peripheral lower front surface is formed with a front lower inclined surface that can be contacted by the incisors of the lower tooth row, and the distance from the outer peripheral wall becomes narrower from the lower side to the upper side,
The inner peripheral upper side surface portion is formed with an inner peripheral upper side surface inclined surface that can be contacted by the canine teeth and the molar teeth of the upper tooth row, and the distance from the outer peripheral wall becomes narrower from the upper side to the lower side. is,
The inner peripheral lower side surface portion is formed with an inner peripheral lower side surface portion inclined surface with which the canine teeth and molar teeth of the lower tooth row can abut, and the interval from the outer peripheral wall becomes narrower from the lower side to the upper side. is,
The front upper inclined surface is formed to have a gentler inclination angle than the inner peripheral upper side inclined surface,
The front side lower inclined surface is formed to have a gentler inclination angle than the inner peripheral lower side inclined surface,
The orthodontic appliance according to claim 1, characterized in that: 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 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,
3. The orthodontic appliance according to claim 1, wherein the upper side portion of the outer peripheral upper front portion is formed so as to extend higher than the upper side portion of the outer peripheral upper side portion. 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,
4. The orthodontic appliance according to claim 3, wherein a projection is formed on the outer peripheral lower front portion. 5. The orthodontic appliance according to claim 4, wherein the outer peripheral lower front face portion is formed thicker than the outer peripheral upper front face portion. The orthodontic appliance according to any one of claims 3 to 5, wherein a plurality of marks parallel to each other are formed in the vertical direction at regular intervals on the outer peripheral upper front portion. The base portion has an extension portion extending rearward from the rear end of the outer peripheral upper side surface portion and the outer peripheral lower side surface portion, and marks parallel to each other with respect to the extension direction are formed at regular intervals on the extension portion. 7. The orthodontic appliance according to any one of claims 4 to 6, wherein a plurality of said orthodontic appliances are formed. The orthodontic appliance according to any one of claims 2 to 7, wherein the front lower sloped surface is formed behind the front upper sloped surface.

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