JP6902301B1 - Muscle function therapy device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a muscle function therapy device capable of adjusting the muscle function of the perioral muscle and significantly shortening the period of improvement over the entire malocclusion. SOLUTION: A muscle function therapy device 10 is sandwiched between an upper dentition 1 of the upper jaw and a lower dentition 2 of the lower jaw, and has a base portion 11 formed in a U shape in a plan view and upper teeth on the upper side of the base portion 11. Perioral muscles provided with an upper dentition insertion portion 11a of the upper dentition contact portion with which the row 1 abuts, and a groove-shaped lower dentition insertion portion 11b for inserting the lower dentition 2 below the base portion 11. It regulates the muscle function of the dentition. The muscle function therapy device 10 is provided with a tongue resting portion 26 that extends inward from the base portion 11 and rests the tongue at a height equal to or higher than the upper end of the crown portion of the lower dentition 2. [Selection diagram] Fig. 2

Description

The present invention relates to a muscle function therapy device used, for example, in children to prepare perioral muscles.

In general, malocclusion may occur due to the effect on maxillofacial morphology caused by muscle dysfunction of the perioral muscles, and it is desired to improve or prevent this malocclusion. This malocclusion includes, for example, mandibular anterior protrusion (opposite occlusion), maxillary anterior protrusion, and crowding.

Conventionally, as an instrument for correcting a mandibular anterior protrusion, for example, there is a dental functional orthodontic appliance described in Patent Document 1. This dental functional orthodontic appliance has a flat floor body having a flat shape of teeth and a corresponding horseshoe shape, the upper end of which slightly protrudes from the upper surface of the floor body, and the lower end of the lower jaw. It has a plate-shaped piece for contacting the tip of the tongue that reaches the inner surface of the gingiva.

In the patient with mandibular anterior protrusion, the tip of the tongue is always in contact with the gums of the mandible, but the dental functional orthodontic appliance of Patent Document 1 prevents this state by the above-mentioned plate-shaped piece to prevent the tip of the tongue. The mandibular anterior protrusion is corrected by contacting the gums of the upper jaw.

Jikkai Sho 62-126211

However, in the dental functional orthodontic appliance described in Patent Document 1 described above, the entire plate-shaped piece for contacting the tip of the tongue is thin, and the lower end thereof reaches the inner surface of the gingiva of the mandible. The height of the part on which the tongue is placed is the height of the inner surface of the gums of the lower jaw. Therefore, while the tongue can be easily placed, the height of the tongue tip becomes low, and there is a problem that it takes a long time to correct the mandibular anterior protrusion.

The present invention has been made in view of such a problem, and provides a muscle function therapy device capable of adjusting the muscle function of the perioral muscles and significantly shortening the period of improvement over the entire malocclusion. The challenge is to do.

In order to achieve such a problem, the invention according to claim 1 has a base portion sandwiched between the upper dentition of the upper jaw and the lower dentition of the lower jaw and formed in a U shape in a plan view, and an upper side of the base portion. Provided with an upper dentition contact portion with which the front and back teeth of the upper dentition abut, and a groove-shaped lower dentition insertion portion for inserting the lower dentition below the base portion, and a perioral muscle. It is a muscle function therapy device that regulates the muscle function of the base portion, and is extended in substantially the same plane as the base portion toward the inside of the U-shape of the base portion, and has a height equal to or higher than the upper end of the crown portion of the lower dentition. The tongue tip and the tongue rests on both sides are provided on the tongue rest portion, and when the tongue tip and the tongue side are placed on the tongue rest portion, the tongue tip is configured to abut on the upper dentition. It is characterized by being.

Further, in the invention according to claim 2, in addition to the configuration according to claim 1 , a protruding portion having the tongue mounting portion on the upper surface portion is formed integrally with the base portion, and the outer edge of the protruding portion is formed. The portion is formed along the inner surface of the lower dentition, and the thickness from the tongue resting portion to the lower surface portion of the protruding portion is formed to be thicker than that of the base portion.

The invention according to claim 3 is characterized in that, in addition to the configuration according to claim 2 , the ridges are arranged so that the left and right inner wall sides of the ridge face the tongue zonule. And.

Further, in the invention according to claim 4 , in addition to the configuration according to claim 2 or 3 , the space between the left and right inner walls of the protruding portion is formed so as to extend in the direction of the tongue zonule of the tongue. It is characterized by being.

The invention according to claim 5 is characterized in that, in addition to the configuration according to claim 3 or 4 , the dimension on the apical side of the tongue between the left and right inner walls of the ridge is set to 2 to 4 mm. And.

According to the invention of claim 1, the base portion is extended in substantially the same plane as the base portion toward the inside of the U-shape, and the tip of the tongue and both sides are at a height equal to or higher than the upper end of the crown portion of the lower dentition. A tongue resting portion on which the tongue side is placed is provided, and when the tongue tip and the tongue side are placed on the tongue resting portion, the tongue tip is configured to abut on the upper dentition. It is possible to significantly shorten the period for improving the overall malocclusion.

Further, according to the invention of claim 2, since the outer edge portion of the protruding portion is formed along the inner surface of the lower dentition, the tilting of the lower dentition to the lingual side is prevented. be able to. Further, since the protruding portion having the tongue mounting portion on the upper surface portion is formed integrally with the base portion, the thickness from the tongue mounting portion to the lower surface portion of the protruding portion is formed to be thicker than the base portion. It is possible to reliably hold the tip of the tongue and the tongue sides on both sides in the tongue resting portion.

Further , according to the invention of claim 3 , since the ridges are arranged so that the left and right inner wall sides of the ridges face each other of the tongue zonules, the ridges are formed when the tongue is moved. It will not be a hindrance.

Further , according to the invention of claim 4 , since the space between the left and right inner walls of the protruding portion is formed so as to expand in the direction of the tongue zonule of the tongue, the protruding portion is formed when the tongue is moved. It is possible to further eliminate the obstacles.

Further , according to the invention of claim 5 , since the dimension of the tip of the tongue between the left and right inner walls of the protruding portion is set to 2 to 4 mm, the protruding portion becomes an obstacle when moving the tongue. It is possible to eliminate this further and it becomes easier to put the tongue on it.

It is a top view which shows the orthodontic appliance which concerns on one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. It is a vertical cross-sectional view which shows the state which the orthodontic tool of FIG. It is sectional drawing which shows the orthodontic appliance which concerns on the modification of one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described. The following embodiment describes an example of mounting on the upper dentition of the upper jaw and the lower dentition of the lower jaw of a child.
[Embodiment of the Invention]
1 to 3 show an embodiment of the present invention.

FIG. 1 is a plan view showing a muscle function therapy device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. FIG. 3 is a vertical cross-sectional view showing a state in which the orthodontic tool of FIG. 1 is worn in the oral cavity.

In the following embodiment, with the muscle function therapy device 10 inserted into the oral cavity and attached to the upper and lower dentitions, the anterior tooth side is the anterior side and the posterior tooth side is the posterior side, and the left side with respect to the anterior teeth. The right side will be described as the left side and the right side, respectively. Here, the anterior teeth are incisors, and include left and right central incisors, left and right lateral incisors, and left and right canines. The back teeth are molars and include left and right first and second premolars and left and right first and third molars.

As shown in FIGS. 1 to 3, the muscle function therapy device 10 of the present embodiment is attached to the upper dentition 1 of the upper jaw and the lower dentition 2 of the lower jaw of a child in the deciduous dentition stage from 3 to 6 years old, for example. It is a mouthpiece type that is used. The muscle function therapy device 10 of the present embodiment is attached to the upper dentition 1 of the upper jaw and the lower dentition 2 of the lower jaw to adjust the muscle function of the muscles around the oral cavity, and the occlusal state between the upper dentition 1 and the lower dentition 2 For example, it has a function of improving and preventing malocclusion including the anterior protrusion of the lower jaw. This malocclusion is maxillary anterior protrusion, mandibular anterior protrusion, crowding, open bite, overcapsular occlusion, etc., and the upper and lower teeth are displaced due to misalignment of the maxilla and mandible, disorder of tooth alignment, etc. A state in which they are not accurately meshed.

The muscle function therapy device 10 of the present embodiment is integrally molded with a resin material having elasticity as a whole. Specifically, the resin material is selected from, for example, a silicon resin, a polyolefin resin, a styrene resin, an acrylic resin, and the like. It is desirable that the resin material is colorless and transparent or milky white, so that when it is inserted into the oral cavity, it is inconspicuous that it is attached to the upper dentition 1 and the lower dentition 2, and it is excellent in aesthetics. Become.

The muscle function therapy device 10 is a molded product (aligner) molded into a shape that gradually moves the individual teeth of the upper dentition 1 and the lower dentition 2 in the direction in which they should be aligned. In the muscle function therapy device 10, for example, a plurality of devices having different sizes or different hardnesses are prepared in stages, and the corrective treatment is advanced by periodically exchanging them.

The muscle function therapy device 10 mainly includes a base portion 11, an outer peripheral wall 12, and an inner peripheral lower wall 24 (shown in FIG. 3). The base portion 11 is a portion sandwiched between the upper dentition 1 of the upper jaw and the lower dentition 2 of the lower jaw when the muscle function therapy device 10 is inserted into the oral cavity, and is formed in a U shape in a plan view with the outer peripheral wall 12. Has been done.

The outer peripheral wall 12 is provided on the outer peripheral edge side of the base portion 11 and is formed so as to project in the vertical direction. As shown in FIGS. 2 and 3, the outer peripheral wall 12 includes an outer peripheral upper wall 13 provided above the base portion 11 and an outer peripheral lower wall 14 provided below the base portion 11. .. The outer peripheral upper wall 13 and the outer peripheral lower wall 14 are formed in a symmetrical shape centered on a portion corresponding to the middle incisor 3 of the front tooth.

As shown in FIG. 1, the outer peripheral upper wall 13 is formed with a V-shaped notch 13a so that the upper lip zonule is fitted in the center in the left-right direction. The outer peripheral lower wall 14 is formed so that the height with respect to the base portion 11 gradually increases from the back tooth side to the front tooth side.

As shown in FIG. 3, the inner peripheral lower wall 24 is provided on the inner peripheral edge side of the base portion 11 and is formed so as to project downward from the base portion 11. Like the outer peripheral upper wall 13 and the outer peripheral lower wall 14, the inner peripheral lower wall 24 is formed in a symmetrical shape in the front tooth portion centering on the portion corresponding to the middle incisor 3 of the front tooth.

The outer peripheral upper wall 13 and the base portion 11 are continuously and integrally formed, and the upper dentition contact portion 11a to which the upper dentition 1 abuts is formed between the outer peripheral upper wall 13 and the base portion 11. Similarly, the outer peripheral lower wall 14, the base portion 11, and the inner peripheral lower wall 24 are continuously and integrally formed, and the lower outer peripheral wall 14, the base portion 11, and the inner peripheral lower wall 24 form lower teeth. A groove-shaped lower dentition insertion portion 11b for inserting the row 2 is formed.

The lower inner peripheral wall 24 is integrally formed with left and right protruding portions 25 that bulge toward the back teeth side. These left and right ridges 25 extend downward inside the base portion 11 and are formed thick and solid along the inside of the lower dentition 2. The outer edges of the left and right ridges 25 are close to the inner surface of the lower dentition 2. The upper surface of the left and right ridges 25 is a tongue resting portion 26 on which the tongue 4 is placed. The left and right ridges 25 are formed so that the tongue resting portion 26 has a height equal to or higher than the upper end of the crown portion of the lower dentition 2.

The left and right ridges 25 are arranged so that their inner wall 25a side faces the tongue zonule 4a of the tongue 4, respectively. The space between the left and right inner walls 25a of the protruding portion 25 is formed so as to gradually expand in the direction (rear) of the tongue zonule 4a of the tongue 4. The dimension on the tongue tip 4b side between the left and right inner walls 25a of the protruding portion 25 is set to 2 to 4 mm. The dimension of the tongue zonule 4a side between the left and right inner walls 25a of the protruding portion 25 is set to about 7 to 8 mm.

If the dimension of the tongue tip 4b side between the left and right inner walls 25a is less than 2 mm, there is a problem that the tongue zonule 4a does not fit and it is difficult to move the tongue 4 depending on the patient. A part of the lower surface of the tongue of the tongue 4 may enter between the left and right inner walls 25a of the tongue 4 together with the tongue zonule 4a to restrict the movement of the tongue 4.

Similarly, if the dimension of the tongue zonule 4a side between the left and right inner walls 25a is less than 7 mm, there is a problem that the root of the tongue zonule 4a does not fit and it is difficult to move the tongue 4 depending on the patient, and it exceeds 8 mm. Then, a part of the lower surface of the tongue of the tongue 4 may enter between the left and right inner walls 25a of the protruding portion 25 together with the tongue zonule 4a, and the movement of the tongue 4 may be restricted.

Next, the operation of the muscle function therapy device 10 of the present embodiment will be described.

The muscle function therapy device 10 of the present embodiment is applied to a child in the deciduous dentition stage from 3 years old to 6 years old, for example. First, the muscle function therapy device 10 is inserted into the oral cavity of a child and attached to the upper dentition 1 and the lower dentition 2. At that time, the upper dentition 1 is brought into contact with the upper dentition contact portion 11a, the lower dentition 2 is inserted into the lower dentition insertion portion 11b, and the outer edges of the left and right ridges 25 are brought into contact with the lower dentition 2. Attach it so that it is close to the inner surface of the. At the same time, the tongue 4 is placed on the tongue resting portion 26 on the upper surface of the left and right protruding portions 25.

Here, when the tongue 4 is placed on the tongue resting portion 26, since the left and right protruding portions 25 are thick and solidly formed, the tongue resting portion 26 puts the tongue tip 4b of the tongue 4 on the palate and above. It can be reliably held so as to abut the middle incisors 3 of the anterior teeth of the dentition 1. At the same time, since the left and right ridges 25 formed thick and solid are close to the lower dentition 2, it is possible to prevent the lower dentition 2 from tilting toward the tongue 4. In this case, if the left and right ridges 25 are formed to be thin and hollow, the lower dentition 2 cannot be held by the left and right ridges 25, and the lower dentition 2 may tilt toward the tongue 4. is there.

In this way, the tongue zonule 4a is fitted into the back tooth side between the left and right inner walls 25a of the protruding portion 25, and the tongue tip 4b comes into contact with the palate and the middle incisor 3 of the anterior tooth of the upper dentition 1. .. In this state, close the mouth so that the upper and lower lips touch. As a result, the tongue 4 is always placed on the tongue resting portion 26 at a height higher than the upper end of the crown portion of the lower dentition 2, so that the muscle function of the perioral muscles is adjusted in a short period of time to perform the mandibular anterior protrusion. It is possible to improve and prevent malocclusion in general, including.

When the height of the tongue resting portion 26 is the height of the inner surface of the gums of the lower dentition 2 of the mandible, the tongue 4 can be easily placed, but the height of the tongue tip 4b becomes lower and the mandibular anterior protrusion. It will take a long time to improve malocclusion including.

As described above, according to the muscle function therapy device 10 of the present embodiment, the tongue resting portion 26 extending inward from the base portion 11 and placing the tongue 4 at a height equal to or higher than the upper end of the crown portion of the lower dentition 2 is provided. Therefore, the tip of the tongue 4b always comes into contact with the palate and the upper dentition 1, and it is possible to significantly shorten the period of improvement over the entire malocclusion including the anterior protrusion of the lower jaw, and the malocclusion. It can also be prevented in general.

Further, according to the present embodiment, a protruding portion 25 is provided along the inside of the lower dentition 2 extending below the base portion 11, and a tongue mounting portion 26 is formed on the upper surface of the protruding portion 25. Therefore, it is possible to prevent the lower dentition 2 from tilting toward the tongue 4.

Further, according to the present embodiment, since the outer edge portion of the protruding portion 25 is close to the inner surface of the lower dentition 2, the lower dentition 2 is further prevented from tilting toward the tongue 4. can do.

Further, according to the present embodiment, the protruding portion 25 is arranged so that the left and right inner wall 25a sides of the protruding portion 25 face the tongue zonule 4a of the tongue 4, respectively, so that the protruding portion 25 is arranged when the tongue 4 is moved. Will not be an obstacle.

Further, according to the present embodiment, the space between the left and right inner walls 25a of the protruding portion 25 is formed so as to expand in the direction of the tongue zonule 4a of the tongue 4, so that the protruding portion is formed when the tongue 4 is moved. It is possible to further eliminate the problem of 25.

Further, according to the present embodiment, since the dimension of the tongue tip 4b side between the left and right inner walls 25a of the protruding portion 25 is set to 2 to 4 mm, the protruding portion 25 becomes an obstacle when moving the tongue 4. This can be further eliminated and the tongue 4 can be easily placed.

As shown in FIG. 4, in the muscle function therapy device 10A of this modified example, cavity portions 25b formed in a linear shape in the front-rear direction and having a circular cross section are provided on the inner side of the left and right ridge portions 25, respectively. ing. Even if the cavities 25b are formed in the left and right ridges 25 in this way, the outside of the left and right ridges 25 has a predetermined wall thickness, and the outer edge holds the inner surface of the lower dentition 2. Since it has strength, it is possible to prevent the lower dentition 2 from tilting toward the tongue 4.

As described above, according to the present modification, the weight of the orthodontic appliance 10A can be reduced by forming the hollow portions 25b on the inner side of the left and right protruding portions 25, respectively.

In this modified example, an example in which the cross-sectional shape of the cavity portion 25b is formed in a circular shape has been described, but the present invention is not limited to this shape, and is not limited to this shape, and is closer to the inside of the left and right ridge portions 25, and the outer edge portion thereof is the lower dentition 2. As long as it has the strength to hold the inner surface of the, it may be formed in any other shape.
[Other Embodiments of the Invention]
Needless to say, the above-described embodiment is an example of the present invention and does not mean that the present invention is limited to the above-mentioned embodiment.

In the above embodiment, the case where the muscle function therapy device 10 is attached to a child has been described, but the present invention is not limited to this, and even when a muscle function therapy device having different dimensions is attached to an adult, the malocclusion is generally improved. In addition to being able to shorten the period, it is also possible to obtain a retention effect for preventing malocclusion in general and for preventing tooth reversion after orthodontic treatment.

Further, in the above embodiment, the material and shape of the muscle function therapy device 10 are made of an appropriate material as long as they can be inserted into the oral cavity and have the same function. May be good.

1 Upper dentition 2 Lower dentition 3 Middle dentition 4 Tongue 4a Tongue zonule 4b Tongue tip 10, 10A Muscle function therapy device 11 Base 11a Upper dentition contact 11b Lower dentition insertion part 12 Outer wall 13 Outer outer upper wall 14 Outer outer lower wall 24 Inner outer lower wall 25 Protruding part 25a Inner wall 25b Cavity part 26 Tongue resting part

Claims (5)

A base part that is sandwiched between the upper dentition of the upper jaw and the lower dentition of the lower jaw and is formed in a U-shape in a plan view.
An upper dentition contact portion where the front and back teeth of the upper dentition abut on the upper side of the base portion,
A groove-shaped lower dentition insertion portion for inserting the lower dentition is provided on the lower side of the base portion.
It is a muscle function therapy device that regulates the muscle function of the muscles around the oral cavity.
A tongue resting portion that extends in substantially the same plane as the base portion toward the inside of the U-shape of the base portion and rests the tip of the tongue and the tongue sides on both sides at a height equal to or higher than the upper end of the crown portion of the lower dentition. Is provided,
A muscle function therapy device characterized in that when the tongue tip and the tongue side are placed on the tongue resting portion, the tongue tip is configured to abut on the upper dentition. A protruding portion having the tongue mounting portion on the upper surface portion is formed integrally with the base portion, and an outer edge portion of the protruding portion is formed along the inner surface of the lower dentition.
The muscle function therapy apparatus according to claim 1, wherein the thickness from the tongue resting portion to the lower surface portion of the protruding portion is formed to be thicker than that of the base portion. The muscle function therapy device according to claim 2, wherein the protruding portion is arranged so that its left and right inner wall sides face the tongue zonule of the tongue. The muscle function therapy device according to claim 2 or 3, wherein the space between the left and right inner walls of the protruding portion is formed so as to extend in the direction of the tongue zonule of the tongue. The muscle function therapy apparatus according to claim 3 or 4 , wherein the dimension on the apical side of the tongue between the left and right inner walls of the bulge is set to 2 to 4 mm.

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