WO2014017645A1

WO2014017645A1 - Orthodontic device

Info

Publication number: WO2014017645A1
Application number: PCT/JP2013/070361
Authority: WO
Inventors: 大塚　淳
Original assignee: Otsuka Atsushi
Priority date: 2012-07-26
Filing date: 2013-07-26
Publication date: 2014-01-30
Also published as: JP2014023671A; JP5623472B2

Abstract

The mouthpiece-type orthodontic device of the present invention is configured from: a base (1) that is sandwiched between the rows of teeth (61, 71) of an upper jaw (6) and a lower jaw (7) and that is U-shaped in a planar view; an upper jaw-side outer peripheral wall (2) that protrudes upward from the outer peripheral edge of the base (1) and comes into contact with the upper lip (62) from the inner side thereof; a lower jaw-side outer peripheral wall (3) that protrudes downward from the outer peripheral edge of the base (1), comes into contact with the lower lip (72) from the inner side thereof, and comes into contact with the front teeth section (711) of the lower jaw (7) from the outer side thereof; and an upper jaw-side inner peripheral wall (4) that protrudes upward from the inner peripheral edge of the base (1) and comes into contact with the front teeth section (611) of the upper jaw (6) from the inner side thereof. The inner peripheral surface of the upper jaw-side outer peripheral wall (2) and the outer peripheral surface of the upper jaw-side inner peripheral wall (4) are spaced farther apart than the thickness of the row of teeth (61) of the upper jaw (6). As a result, mandibular prognathism is eliminated or reduced even during the permanent dentition period.

Description

Orthodontic appliance

The present invention relates to an orthodontic apparatus suitable for eliminating or reducing reverse occlusion.

In the present invention, the “front tooth portion” includes left and right middle incisors, side incisors and canines (in the case of Nos. 1 to 3, permanent teeth), mid-milk incisors, milk side incisors and dairy canines (A to C, deciduous teeth). "Molar part" is the left and right first premolars, second premolars, first premolars, second premolars and third premolars (4-8, permanent teeth), first Mean deciduous teeth and second deciduous teeth (D and E, in the case of deciduous teeth), respectively. The “front tooth portion” and the left and right “molar teeth portions” are collectively referred to as the “dental row” of the upper jaw or the lower jaw.

Opposite occlusion (mandibular prognathism) not only makes the appearance worse, but also restricts the movement of the lower jaw, thus causing pain in the lower jaw (temporomandibular disorders). Moreover, in the case of a child, there is a possibility that normal growth of the upper jaw may be hindered. From now on, various orthodontic devices have been proposed for eliminating counter-occlusion (resolving counter-occlusion) or reducing (relieving symptoms of counter-occlusion and complete cure with another treatment).

Patent Document 1 discloses an orthodontic apparatus (chin pulling and fixing apparatus) called a chin cap type. The orthodontic apparatus disclosed in Patent Document 1 eliminates or reduces the opposite occlusion by hanging a chin cap around the lower jaw from the head portion mounted on the head and pulling the lower jaw backward (Patent Document 1 [claimed) Item 1]). The orthodontic appliance disclosed in Patent Document 1 enables the traction direction of the chin cap and the strength of the traction force to be finely adjusted (Patent Documents 1 and [0024]).

Patent Document 2 discloses an orthodontic apparatus (an occlusal correction apparatus) called an archwire type. The orthodontic apparatus disclosed in Patent Document 2 is a tongue raising portion that raises the tongue from the inner front of the lower jaw front teeth, a contact portion that makes contact with the inner side of the lower jaw that is the inner side of the lower molar, and widens the contact portion. The urging portion that urges in the direction is formed of a wire having elasticity (Patent Document 2, [Claim 1] [0022]). The urging unit presses the lower jaw from the inside in the left-right widening direction via the resin pad (Patent Document 2, [0026]).

Patent Document 3 discloses an orthodontic apparatus (tongue and mandibular position correction training device) called a mouthpiece type. An orthodontic apparatus disclosed in Patent Document 3 includes an dentition fitting portion that can be fitted into a maxillary dentition, and a tongue position correcting portion that is formed to bulge downward from the dentition fitting portion. It is composed of a thermoplastic elastomer (styrenic resin) having flexibility (Patent Document 3, [Claim 1]). A notch part that can be fitted to the upper lip band is provided at the rising part constituting the dentition fitting part, and a notch part that can be fitted to the tongue band is provided at the tongue position correcting part (Patent Document). 3. [Claim 3]).

JP 2006-020907 A (Chin Cap Type) JP 2011-115316 A (arch wire type) Registered Utility Model No. 3153815 (Mouthpiece type)

An orthodontic device that eliminates or reduces reverse occlusion is used by infants after the deciduous dentition period (around 3 years) when the reverse occlusion did not heal spontaneously. The archwire-type orthodontic appliance (Patent Document 2) is too unfavorable as a treatment means because the burden on the infant is too great. In addition, the chin-cap-type orthodontic appliance (Patent Document 1) was visually attached from the outside and did not look good.

In addition, the conventional mouthpiece type orthodontic apparatus is made of hard resin, and it is necessary to mold the patient's tooth shape in advance or it is difficult to deform. However, the mouthpiece-type orthodontic device disclosed in Patent Document 3 is composed of a flexible thermoplastic elastomer (styrene resin), and is adapted to the oral cavity without requiring adjustment work, thereby reducing discomfort. The effect is obtained (Patent Document 3, [0011]).

The mouthpiece type orthodontic apparatus disclosed in Patent Document 3 lifts the tongue in the lower position by the tongue position correcting unit, and makes the dentition fitting portion abut on the gums of the upper jaw dentition from the inner periphery. The muscular function is adjusted, the growth of the upper jaw is promoted, and the growth of the lower jaw is suppressed, and the reverse occlusion is eliminated or reduced. As described above, the mouthpiece-type orthodontic apparatus disclosed in Patent Document 3 can be adapted to the oral cavity without requiring adjustment work, and is particularly suitable for patients having an occlusion from the deciduous dentition period to the mixed dentition period. It is widely used as a suitable orthodontic apparatus.

However, the mouthpiece-type orthodontic apparatus disclosed in Patent Document 3 is merely a matter of raising the tongue by the tongue position correcting portion and bringing the dentition fitting portion into contact with the gums to adjust the muscle function around the oral cavity. Since it does not positively correct the opposite occlusion, it could not exert a sufficient correction action especially for patients after the permanent dentition stage. Then, the mouthpiece type orthodontic apparatus which can eliminate or reduce the opposite occlusion also in the permanent dentition period was examined.

What has been developed as a result of the study is a U-shaped base in plan view that is sandwiched between the upper and lower dentitions, an upper outer peripheral wall that protrudes upward from the outer peripheral edge of the base and contacts the upper lip from the inside, and the base A lower jaw side outer peripheral wall projecting downward from the outer peripheral edge of the lower jaw and abutting the lower lip from the inner side and abutting from the outer side to the lower teeth of the lower jaw, and projecting upward from the inner peripheral edge of the base from the inner side to the front teeth of the upper jaw The orthodontic apparatus is composed of a maxillary inner peripheral wall that is in contact with each other, and the inner peripheral surface of the maxillary outer peripheral wall and the outer peripheral surface of the maxillary inner peripheral wall are separated from the thickness of the maxillary dentition.

In the present invention, “outside” means the lip side or cheek side with the upper or lower jaw dentition interposed therebetween, and conversely “inner” means the palate side or the lingual side with the upper chin or lower jaw dentition interposed therebetween. From now on, the “outer peripheral surface” of the outer peripheral wall of the upper jaw, the outer peripheral wall of the lower jaw or the inner peripheral wall of the upper jaw is the peripheral surface facing the outside of the dentition (the peripheral surface on the lip side of the front tooth part or the buccal side of the left and right molar parts) Similarly, the “inner peripheral surface” means the peripheral surface facing the inside of the dentition (the peripheral surface on the palate side or the lingual side of the front tooth portion and the left and right molar portions).

When the orthodontic apparatus of the present invention is attached to the oral cavity so as to bite the base with the maxillary and mandibular dentitions, each of the functions of the maxillary outer wall, the mandibular outer wall and the maxillary inner wall and the synergistic effect of the functions To eliminate or reduce reverse occlusion. The outer peripheral wall of the upper jaw is brought into contact with the upper lip from the inside so that the upper lip pulled on the upper part of the muzzle muscle does not hit the front teeth of the upper jaw, and the upper lip does not disturb the growth of the upper jaw. The outer peripheral wall of the lower jaw is in contact with the lower lip from the inside, and is brought into contact with the anterior teeth of the lower jaw from the outside to suppress the development of the lower jaw while pushing the lower lip outward and closing the mouth. A load is applied to the lower lip to promote the growth of the lower part of the muzzle muscle. The maxillary side inner peripheral wall abuts against the anterior teeth of the upper jaw from the inside and pushes the anterior teeth outward to help the growth of the upper jaw.

As described above, the orthodontic apparatus of the present invention eliminates or eliminates the opposite occlusion by the synergistic action of each part and the above-described functions. Therefore, it is not necessary to fit the patient's mouth exactly and can be stably attached to the mouth. Good. From this, the base, the upper jaw side outer peripheral wall, the lower jaw side outer peripheral wall, and the upper jaw side inner peripheral wall may be integrally formed of a resin material having elasticity or flexibility so that the molding can be omitted. Thereby, the orthodontic apparatus of the present invention absorbs some positional deviations by deformation of each part, and can be used as it is for a large number of patients without taking a dental mold. Moreover, since each part is provided with elasticity or flexibility, the base can be bitten by the dentition of the upper jaw and the lower jaw and can be stably attached to the oral cavity.

The outer peripheral wall of the lower jaw extends along the base, and a lower support strip that comes into contact with the front teeth of the lower jaw from the outside is provided on the inner peripheral surface, and the cross-sectional top of the lower support strip is partially in contact with the front teeth of the lower jaw It is good to let them. The lower support strip corrects the alignment of the front teeth so that the front teeth of the lower jaw are allowed to grow while being in uniform contact with each other. When there are a plurality of lower support strips, the front teeth of the lower jaw are corrected so that the front teeth are aligned with the copying surface including the top of the cross section of all the lower support strips. From this, when there are a plurality of lower support strips, each lower support strip is individually cut to adjust the height of the top of each cross section and change the angle of the copying surface, thereby finely correcting the anterior teeth of the lower jaw. Can be adjusted.

Similarly, the inner peripheral wall of the upper jaw side extends along the base, and an upper support strip that abuts on the front tooth portion of the upper jaw from the inside is provided on the inner peripheral surface, and a cross-sectional top portion of the upper support strip is partially formed on the front tooth portion of the upper jaw. It is good to make it contact. The upper support strip corrects the alignment of the front teeth so that the front teeth of the upper jaw are allowed to grow while abutting equally on the whole. When there are a plurality of upper support strips, the front teeth of the upper jaw are corrected so that the front teeth are in contact with the copying surface including the top of the cross section of all the upper support strips. From this, when there are a plurality of upper support strips, each upper support strip is shaved individually, and the height of the top of each cross section is adjusted to change the angle of the copying surface, thereby finely correcting the front teeth of the upper jaw. Can be adjusted.

The base may be provided with a tongue position correcting flange that extends downward from the inner peripheral edge and sinks under the tongue. The tongue position correcting flange can be exemplified by a U-shaped configuration in a plan view provided with a cutout that avoids the tongue band, a configuration in which a pair of left and right are provided avoiding the tongue band. The tongue position correcting flange separates the tip of the tongue from the front tooth portion of the lower jaw and eliminates the state where the front tooth portion is pushed by the tongue tip and the lower jaw is pushed out. When the tongue position correction flange is added, the base, the upper jaw side outer peripheral wall, the lower jaw side outer peripheral wall, the upper jaw side inner peripheral wall, and the tongue position correction flange are integrally formed of a resin material having elasticity or flexibility. Similarly, when the orthodontic appliance of the present invention is molded, it is not necessary to mold, or the orthodontic appliance can be stably attached to the oral cavity.

The orthodontic apparatus of the present invention has an effect of not only adjusting the muscle function around the oral cavity but also positively correcting the opposite occlusion. This prevents the upper lip from contacting the upper lip from the inside and prevents the upper lip force from being applied to the front teeth of the upper jaw, the upper lip acts as an outer peripheral wall that does not interfere with the growth of the upper jaw, and the lower lip from the inner side. Abutting and abutting on the anterior teeth of the lower jaw from the outside, while suppressing the lower jaw growth, push the lower lip outward and give a load through the lower lip to promote the growth of the lower part of the muzzle muscle This is due to the synergistic effect of the action of the outer peripheral wall of the lower jaw and the action of the inner peripheral wall of the upper jaw that pushes the front teeth of the upper jaw outward and helps the growth of the upper jaw.

The functions of the maxillary outer wall, the mandibular outer wall and the maxillary inner wall as described above are also effective in the permanent dentition period from the deciduous dentition period to the mixed dentition period. This provides the effect of eliminating or reducing the opposite occlusion. The tongue position correction part has an effect that the function of the outer peripheral wall of the lower jaw side is sufficiently exhibited especially by separating the tongue tip from the front tooth part of the lower jaw and preventing the front tooth part of the lower jaw from being pushed by the tongue tip. Have. In addition, since the orthodontic appliance of the present invention is integrally formed with a resin material having elasticity or flexibility, it eliminates the need for mold taking and improves the mounting stability of the oral cavity. For various users, the effect of eliminating or reducing the opposite occlusion is obtained.

It is a top view of the orthodontic apparatus which is an example of this invention. It is a bottom view of the orthodontic apparatus of this example. It is a front view of the orthodontic apparatus of this example. It is a rear view of the orthodontic apparatus of this example. It is a left view of the orthodontic apparatus of this example. It is a right view of the orthodontic apparatus of this example. It is the front-back direction sectional drawing of the orthodontic apparatus of this example. FIG. 8 is a front-rear direction cross-sectional view corresponding to FIG. It is a left-right direction sectional view of the orthodontic apparatus of this example.

Hereinafter, modes for carrying out the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 6, the orthodontic apparatus of the present invention has a base 1, an upper jaw side outer peripheral wall 2, a lower jaw side outer peripheral wall 3, an upper jaw side inner peripheral wall 4 and a tongue position correcting flange 5 which are elastic or usable. It is integrally molded with a flexible silicone resin. The orthodontic apparatus of this example can be used as it is by a large number of patients without taking up a mold by absorbing the positional deviation due to the deformation of the silicone resin constituting each part (general versatility). Moreover, the orthodontic apparatus of this example can stabilize the mounting of the oral cavity by firmly biting the base 1 with the

teeth

61 and 71 of the upper jaw 6 and the lower jaw 7 (see FIG. 8 described later).

In addition, when the orthodontic appliance of this example is attached to the oral cavity by integrally molding with a silicone resin having flexibility or elasticity, there is less pressure on the gums and cheeks 9, and no pain is given to the patient. There is no risk of damaging the gums or cheeks 9. Further, the orthodontic apparatus integrally formed with a flexible or elastic silicone resin adjusts the angle of the copying surface 411 of the three upper support strips 41 formed on the outer peripheral surface of the upper inner peripheral wall 4, for example. In the case (refer to FIG. 7 and FIG. 8), the silicone resin can be easily scraped, so that the angle can be easily adjusted.

The base 1 is a U-shaped portion in plan view that is sandwiched between the

teeth

61 and 71 of the upper jaw 6 and the lower jaw 7. The base 1 of this example made of silicone resin is several mm thick. In this example, for convenience, a portion sandwiched between the

front teeth

611 and 711 is referred to as a base front portion 11, and a portion sandwiched between the

molar portions

612 and 712 is referred to as a base side portion 12. In the base 1 of this example, the base front portion 11 and the base side portion 12 have the same thickness. However, for example, there is a difference in thickness between the two, and in the state where the base side part 12 is bitten by the

molar parts

612 and 712, the

front teeth part

611 and 711 are separated from the base front part 11 to add a function of correcting malocclusion opening. May be.

The base side portion 12 has an upper surface on the upper jaw side and a lower surface on the lower jaw side having the same width in the inner and outer directions, and the outer peripheral edge and the inner peripheral edge of the upper surface and the lower surface are aligned in the inner and outer directions without any deviation. . Specifically, the inner peripheral surface of the upper jaw side outer peripheral wall 2 and the inner peripheral surface of the lower jaw side outer peripheral wall 3 are continuous across the base side portion 12, and the outer peripheral surface of the upper jaw side inner peripheral wall 4 and the tongue position correcting flange 5 is continuous with the base side portion 12 in between, and the upper surface and the lower surface of the base side portion 12 are vertically symmetrical (see FIG. 4). For this reason, the molar portion 612 of the upper jaw 6 abuts the outer peripheral surface of the upper inner peripheral wall 4 from the inside, and the molar portion 712 of the lower jaw 7 extends downward from the inner peripheral edge of the base side portion 12. The base of the abuts from the inside.

The base front portion 11 is vertically asymmetric with a wide upper surface on the upper jaw side and a narrow lower surface on the lower jaw side (see FIGS. 7 and 8). The upper surface of the base front portion 11 is widened because the inner peripheral surface of the upper jaw side outer peripheral wall 2 is moved away from the outer peripheral surface of the upper jaw side inner peripheral wall 4. On the other hand, the lower surface of the base front portion 11 causes the lower outer peripheral wall 3 to contact the lower lip 72 from the inner side to also contact the front tooth portion 51 of the lower jaw 7 from the outer side. The outer peripheral edge of the base front part 11 protruding inwardly is displaced inward, and the base part of the tongue position correcting flange 5 is brought into contact with the front tooth part 51 from the inside, so that the inner peripheral edge of the base front part 11 is outward. Because it is close, the width in the inside and outside direction is narrow. As a result, the base front portion 11 is vertically asymmetric with a wide upper surface on the upper jaw side and a narrow lower surface on the lower jaw side.

The upper jaw side outer peripheral wall 2 is a wall surface portion having an arcuate cross section that protrudes upward from the outer peripheral edge of the base 1 and protrudes outwardly in contact with the upper lip 62 from the inside. The upper outer peripheral wall 2 of this example made of silicone resin is several mm thick. In this example, the upper peripheral wall 2 of the maxillary side is sized and contoured to fit into the oral vestibule on the upper jaw 6 side, and is inclined inward in parallel with the buccal muscles so as not to compress the cheek 9 from the inside, The upper lip band avoiding recess 21 is provided with a pair of cheek

band avoiding recesses

22 and 22 at left and right symmetrical positions, respectively. Since the end of the maxillary side outer peripheral wall 2 extends to the left and right molar portions 611 (see FIG. 8), there is a possibility that pressure on the upper part of the muzzle muscle via the upper lip 62 is applied to the dentition 61 of the upper jaw 6. There is no.

The lower jaw side outer peripheral wall 3 protrudes downward from the outer peripheral edge of the base 1 and comes into contact with the lower lip 72 from the inside, and protrudes outwardly from the outer side to contact the front teeth 611 of the lower jaw 6 from the outside. Part. The lower outer peripheral wall 3 of the lower jaw side of this example made of silicone resin is several mm thick except in the vicinity where it contacts the front tooth portion 711 of the lower jaw 7. As described above, the outer peripheral wall 3 of the lower jaw side of this example needs to be brought into contact with the lower lip 72 from the inside and also brought into contact with the front tooth portion 51 of the lower jaw 7 from the outside. The cross section is thicker in the direction and thinner toward the base side portion 12 (Comparison with FIG. 4 and FIG. 7 or FIG. 8). This is the same state as when a thick silicone resin that is hard to elastically deform is applied to the front of the lower jaw 7. In this manner, the lower jaw side outer peripheral wall 3 suppresses or prevents the growth in which the lower jaw 7 tends to protrude forward.

The lower outer peripheral wall 3 of the lower jaw in this example is provided with a lower lip strip avoidance recess 32 at the center of the lower edge (see FIG. 3). Moreover, the lower jaw side outer peripheral wall 3 of the present example extends along the base 1 and is provided with a lower support strip 31 on the inner peripheral surface that comes into contact with the front teeth 71 of the lower jaw 7 from the outside (see FIGS. 7 and 8). . The lower support strip 31 has the top of the cross section partially abutted against the front tooth portion 71 of the lower jaw 7 and allows the front tooth portion 71 of the lower jaw 7 to grow, while allowing the front tooth portion 71 to abut evenly. Correct the alignment. The degree of contact of the lower support strip 31 with respect to the front teeth 71 of the lower jaw 7 is adjusted by partially cutting the lower support strip 31. The lower support strip 31 of this example is formed of silicone resin integrally with the lower jaw side outer peripheral wall 3 and is therefore easy to cut.

The maxillary side inner peripheral wall 4 protrudes upward from the inner peripheral edge of the base 1 by a height that contacts the front tooth portion 61 of the upper jaw 6 and protrudes outwardly in contact with the front tooth portion 61 from the inside. Part. The maxillary side inner peripheral wall 4 of this example made of silicone resin is several mm thick. The maxillary side inner peripheral wall 4 in this example abuts against the front tooth portion 61 of the upper jaw 6 from the inside, and pushes the front tooth portion 61 outward to help the growth of the upper jaw. Further, the maxillary inner peripheral wall 4 that comes into contact with the front tooth portion 61 of the upper jaw 6 from the inside prevents the tongue tip 81 of the tongue 8 lifted by the action of the tongue position correcting flange 5 from pushing the front tooth portion 61 from the inside. The situation where the alignment of the front teeth 61 of the upper jaw 6 is deteriorated is avoided.

The upper jaw side inner peripheral wall 4 of this example is provided along the base 1 at equal intervals on the outer peripheral surface of the descending slope toward the outer side, instead of directly contacting the front tooth portion 61 of the upper jaw 6 with the outer peripheral surface. The tops of the cross sections of the three upper support strips 41 are in contact with the front teeth 61 of the upper jaw 6 from the inside (see FIGS. 7 and 8). The upper support strip 41 corrects the alignment of the front teeth 61 so that the front teeth 61 of the upper jaw 6 can grow evenly while allowing the growth of the front teeth 61. The degree of contact of the upper support strip 41 with the front tooth portion 61 of the upper jaw 6 is adjusted by partially cutting the upper support strip 41. Since the upper support strip 41 of this example is formed of silicone resin integrally with the upper jaw side inner peripheral wall 4, it is easy to cut.

In this example, there are three upper support strips 41, and all of them are provided at equal intervals on the outer peripheral surface of the downward slope toward the outside, so that the copying surface 411 including the top of the cross section of the entire upper support strip 41 is It is a downward slope toward From this, if each upper support strip 41 is individually or partially shaved to increase or decrease the height of the top of each cross section, the gradient angle of the copying surface 411 can be changed, and correction is made so as to contact the copying surface 411 equally. The degree of correction of the front tooth portion 61 of the upper jaw 6 can be finely adjusted.
Since the upper support strip 41 of this example is formed of silicone resin integrally with the upper jaw side inner peripheral wall 4, it is easy to cut.

The tongue position correcting flange 5 extends downward from the inner peripheral edge of the base 1 and is a curved section flange portion that bends horizontally in a gradual manner. The tongue position correcting flange 5 sinks below the tongue 8 and separates the tongue tip 81 from the front tooth portion 711 of the lower jaw 7. The state where the front tooth portion 711 is pushed by the tongue tip 81 and the lower jaw 7 is pushed out is eliminated. The tongue position correcting flange 5 of this example has a U-shape in a plan view in which a tongue band avoiding cutout 51 extending in the front-rear direction is provided in the left and right center of the flat portion, but is divided into left and right by the tongue band avoiding notch 51. The tongue position correcting flange 5 may be provided in a pair. The tongue position correcting flange 5 only needs to have a function of preventing the tongue 8 from sticking to the lower jaw 7, and may be thinner or thicker than the present example. For example, the tongue position correcting flange 5 may be formed by laminating a plurality of thin plates, The number of stacks may be adjustable.

The tongue position correcting flange 5 of the present example has an orthodontic function by bringing the base of the tongue position correcting flange 5 extending downward from the inner peripheral edge of the base side portion 12 into contact with the tooth row 71 of the lower jaw 7 from the inside. Also demonstrates. From this, the tongue position correcting flange 5 of the present example of the present example includes the outer peripheral surface of the upper jaw side inner peripheral wall 4 and the base of the tongue position correcting flange 5 so that the teeth 61 of the upper jaw 6 and the teeth 71 of the lower jaw 7 are aligned. The outer surface of each is made to coincide with the inner and outer directions. Further, since the tongue position correcting flange 5 of this example has the same thickness as the upper jaw side inner peripheral wall 4, the inner peripheral surface of the upper jaw side inner peripheral wall 4 and the inner surface of the base portion of the tongue position correcting flange 5 are continuous to wrap the tongue. A space is formed. As a result, the space restrains the tongue 8 in the oral cavity and seals the movement of the tongue 8 that adversely affects the correction of malocclusion.

While the patient is awake, the orthodontic apparatus of the present invention is attached to the oral cavity so as to bite the base 1 with the dentitions 61 and 71 of the upper jaw 6 and the lower jaw 7, as shown in FIG. The state of closing the mouth so that the lower lip 72 is stuck is maintained for a specified time (for example, 1 hour), and the reverse occlusion is eliminated or reduced. When the orthodontic appliance is attached to the oral cavity and the mouth is closed, the upper lip 62 is pulled to the upper part of the muzzle muscle, but the upper peripheral wall 2 is interposed between the upper lip 62 and the front teeth 611 of the upper jaw 6, and the upper jaw side A gap Δ is formed between the inner peripheral surface of the outer peripheral wall 2 and the front tooth portion 611 (see FIGS. 7 to 9) to prevent the upper lip 62 from being pressed against the front tooth portion 611. The maxillary outer peripheral wall 2 has an outer shape and size that fits in the oral vestibule corresponding to the upper part of the muzzle muscles, but by inclining inward in parallel with the buccal muscles, the pressure on the cheek 9 is eliminated and the mouth is closed. This reduces the burden of continuing to wear orthodontic appliances.

When the orthodontic appliance is attached to the oral cavity and the mouth is closed, as shown in FIG. 7, a thick mandibular outer peripheral wall 3 is interposed between the lower lip 72 and the front tooth portion 711 of the lower jaw 7 in the inner and outer directions. Thus, a load is applied to the lower lip 72 to promote the growth of the lower part of the muzzle muscle, and at the same time, the protrusion of the lower jaw 7 is hindered to suppress or prevent the growth of the lower jaw 7. In the lower jaw side outer peripheral wall 3 of this example, the lower support strip 31 is brought into contact with the front tooth portion 711 of the lower jaw 7, but a gap Δ is formed between the lower tooth portion 712 of the lower jaw 7 ( (See FIGS. 7 to 9). The action of suppressing or preventing the growth of the lower jaw 7 can be obtained by attaching an orthodontic appliance to the oral cavity without closing the mouth, but by closing the mouth, the action of promoting the growth of the lower part of the muzzle muscle can be obtained. . From this, the orthodontic apparatus of the present invention is preferably used while the patient can consciously close the mouth, for example, while waking up.

The maxillary side inner peripheral wall 4 pushes the anterior teeth 611 of the upper jaw 6 from the inside to assist in the growth of the upper jaw 6, and also provides orthodontic correction for aligning the anterior teeth 611 with which the upper support strip 41 abuts directly. Has a function. The orthodontic action of the maxillary inner peripheral wall 2 is secondary to the action of assisting the growth of the upper jaw 6, and from the viewpoint of sufficiently exerting the function of assisting the growth of the upper jaw 6, the orthodontic apparatus It is preferable not to move the upper jaw 6 and the lower jaw 7 once the is attached to the oral cavity. Similarly, the base of the tongue position correcting flange 5 also has an orthodontic function, but it is mainly used to lift the tongue 8 and it is preferable that the tongue 8 does not move unnecessarily. It is preferable that the upper jaw 6 and the lower jaw 7 are not moved.

1 Base 2 Maxillary Outer Wall 3 Mandibular Outer Wall 4 Maxilla Inner Wall 5 Tongue Position Correction Flange 6 Maxilla 61 Dentistry 7 Mandible 71 Dentistry 8 Tongue 9 Cheek

Claims

A U-shaped base in plan view sandwiched between upper and lower dentitions;
An upper peripheral wall that protrudes upward from the outer peripheral edge of the base and contacts the upper lip from the inside;
A mandibular side outer peripheral wall projecting downward from the outer peripheral edge of the base and abutting on the lower lip from the inside, and abutting on the anterior tooth portion of the mandible from the outside;
It is composed of an upper peripheral side inner peripheral wall that protrudes upward from the inner peripheral edge of the base and contacts the front tooth portion of the upper jaw from the inside,
An orthodontic apparatus characterized in that the inner peripheral surface of the upper jaw side outer peripheral wall and the outer peripheral surface of the upper jaw side inner peripheral wall are separated from each other by the thickness of the maxillary dentition.
The orthodontic apparatus according to claim 1, wherein the base, the upper jaw side outer peripheral wall, the lower jaw side outer peripheral wall, and the upper jaw side inner peripheral wall are integrally formed of a resin material having elasticity or flexibility.
3. The orthodontic apparatus according to claim 1, wherein the lower jaw side outer peripheral wall is provided with a lower support strip extending along the base and contacting an anterior tooth portion of the lower jaw from the outside on the inner peripheral surface.
The orthodontic appliance according to any one of claims 1 to 3, wherein the inner peripheral wall of the upper jaw side is provided with an upper support strip extending along the base and contacting an anterior tooth portion of the upper jaw from the inside on the inner peripheral surface.
The orthodontic apparatus according to any one of claims 1 to 4, wherein the base is provided with a tongue position correcting flange that extends downward from the inner peripheral edge and sinks under the tongue.
The orthodontic apparatus according to claim 5, wherein the base, the upper jaw side outer peripheral wall, the lower jaw side outer peripheral wall, the upper jaw side inner peripheral wall and the tongue position correcting flange are integrally formed of a resin material having elasticity or flexibility.