TW202228606A - Myofunctional therapy device - Google Patents

Abstract

To provide a myofunctional therapy device that can significantly shorten the period for improving general malocclusion by adjusting the muscular function of the perioral muscles. A myofunctional therapy device 10 for adjusting the muscular function of the perioral muscles, said device comprising: a base part 11 that is interposed between the upper tooth row 1 of the upper jaw and the lower tooth row 2 of the lower jaw, and has a U-shape when viewed in plan view; an upper tooth row contact section upper tooth row insertion section 11a that contacts the upper tooth row 1 on the upper side of the base part 11; and a groove-shaped lower tooth row insertion section 11b into which the lower tooth row 2 is inserted on the lower side of the base part 11. The myofunctional therapy device 10 is provided with a tongue placement section 26 that extends inward from the base part 11 and holds the tongue at a height not lower than the top of the crowns of the lower tooth row 2.

Description

Muscle function therapy device

The present invention relates to a muscle function therapy device for adjusting the muscles around the mouth, for example, in children.

Generally, malocclusion is often caused by the influence of the maxillofacial morphology caused by the muscular insufficiency of the muscles around the mouth, and it is ideal to improve or prevent the malocclusion. Such malocclusions include, for example, mandibular protrusion (reverse bite), maxillary protrusion, and crowded dentition.

Conventionally, as a tool for correcting a mandibular protrusion, for example, there is a dental function corrector described in Patent Document 1. This orthodontic appliance for dental function has a flat bed body part whose plane shape is formed in a horseshoe shape corresponding to the dentition, an upper end part slightly protrudes from the upper side surface of the bed body part, and a lower end part reaches the gingival inner surface of the lower jaw A plate-like piece for contacting the tip of the tongue.

Furthermore, in patients with a protruding mandible, although the tongue tip is always in contact with the gum of the lower jaw, the dental appliance of Patent Document 1 prevents this state by the above-mentioned plate-like piece, and makes the tongue tip contact with the gum of the lower jaw. The gums of the upper jaw to correct the prognathism of the lower jaw. [Prior Art Literature] [Patent Literature]

Patent Document 1 Japanese Utility Model Publication No. Sho 62-122611

[Problems to be Solved by Invention]

However, in the orthodontic device for dental function described in the above-mentioned Patent Document 1, since the entire plate-like piece for contacting the tongue tip is thin, and the lower end portion thereof is positioned to reach the inner surface of the gum of the lower jaw, the portion where the tongue is placed The height becomes the height of the inner surface of the gums of the lower jaw. Therefore, it is easy to place the tongue, and conversely, the height of the tongue tip becomes low, and there is a problem that it takes a long time to correct the mandibular protrusion.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a muscle function therapy device that can adjust the muscle function of the muscles around the oral cavity and significantly shorten the period of overall improvement of malocclusion. [Technical means to solve problems]

In order to achieve this problem, the invention described in claim 1 is a muscle function therapy device, comprising: a base part which is sandwiched between the upper dentition of the upper jaw and the lower dentition of the lower jaw, and is formed into a U-shape in plan view; a row abutting part, the upper dentition abuts on the upper side of the base part; and a lower dentition insertion part, which is groove-shaped and allows the lower dentition to be inserted into the lower side of the base part to adjust the muscles around the oral cavity The muscle function is characterized by providing a tongue placing portion extending inward from the base portion and placing the tongue at a height above the upper end of the crown portion of the lower dentition.

Further, the invention described in claim 2, in addition to the configuration described in claim 1, is characterized in that a protruding portion is provided extending below the base portion and along the inner side of the lower dentition, and the tongue is The placement portion is formed on the upper side surface of the protruding portion.

Further, the invention described in claim 3, in addition to the configuration described in claim 2, is characterized in that the protruding portion has an outer edge portion that is close to the inner surface of the lower dentition.

Further, the invention described in claim 4, in addition to the configuration described in claim 2 or 3, is characterized in that the protruding portion is arranged so that the left and right inner wall sides thereof face the lingual frenulum of the tongue, respectively. .

Further, the invention described in claim 5, in addition to the configuration described in claim 2, 3, or 4, is characterized in that a tongue system is formed between the left and right inner walls of the protruding portion toward the tongue. With directional expansion.

Furthermore, the invention described in claim 6, in addition to the configuration described in claim 4 or 5, is characterized in that the dimension on the tongue tip side between the left and right inner walls of the protruding portion is set to 2 to 4 mm. [Inventive effect]

According to the invention described in claim 1, since the tongue mounting portion is provided to extend inward from the base portion and to mount the tongue at a height higher than the upper end of the crown portion of the lower dentition, the tip of the tongue is always in contact with the mouth cover and the upper portion. The dentition can adjust the muscle function of the muscles around the mouth and greatly shorten the period of overall improvement of malocclusion.

In addition, according to the invention described in claim 2, since the protruding portion is provided extending below the base portion and along the inner side of the lower dentition, and the tongue placing portion is formed on the upper side surface of the protruding portion, it is possible to prevent The lower dentition fell to the tongue side before it happened.

Further, according to the invention described in claim 3, since the outer edge of the protruding portion is close to the inner surface of the lower dentition, it is possible to further prevent the lower dentition from falling to the lingual side.

In addition, according to the invention described in claim 4, since the protruding portions are arranged so that the left and right inner wall sides thereof face the lingual frenulum of the tongue, respectively, the protruding portions do not interfere with the tongue movement.

In addition, according to the invention described in claim 5, since the inner wall between the left and right of the protuberance is formed to expand in the direction of the tongue frenulum, it is possible to further eliminate the obstruction caused by the protuberance when moving the tongue.

In addition, according to the invention described in claim 6, since the dimension on the tongue tip side between the left and right inner walls of the protruding portion is set to 2 to 4 mm, it is possible to further eliminate the obstruction caused by the protruding portion when moving the tongue, and It is easy to place the tongue.

Hereinafter, one embodiment of the present invention will be described. In addition, in the following one embodiment, the example of attachment to the upper dentition of the upper jaw and the lower dentition of the lower jaw of a child will be described. [One Embodiment of Invention] 1 to 3 show one 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 line II-II of FIG. 1 . 3 is a longitudinal cross-sectional view showing a state in which the orthodontic tool of FIG. 1 is installed in the oral cavity.

In addition, in the following embodiments, in a state where the muscle function therapy device 10 is inserted into the oral cavity and installed in the upper dentition and the lower dentition, the anterior tooth side is referred to as the front side, and the molar side is referred to as the rear side, The left side and the right side with respect to the front teeth will be described as the left side and the right side, respectively. Here, the front teeth are incisors, and include left and right middle incisors, left and right lateral incisors, and left and right canines. The molars are molars, and include: left and right first and second small molars; and left and right first to third large molars.

As shown in FIG. 1 to FIG. 3 , the muscle function therapy device 10 of the present embodiment is used for, for example, a child in the deciduous stage from three to six years old, and is installed on the upper dentition 1 and the lower jaw of the upper jaw of the child. The mouthguard type of the lower dentition 2. The muscle function therapy device 10 of the present embodiment is installed on 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 comprehensively improve the occlusal state of the upper dentition 1 and the lower dentition 2 , for example, a device with a preventive function for malocclusion including a mandibular protrusion. This malocclusion refers to the protrusion of the upper jaw, the protrusion of the lower jaw, crowding of the teeth, open bite, and deep bite, etc., and the upper and lower teeth are not properly meshed due to the misalignment of the upper and lower jaws, and the misalignment of the teeth. status.

The muscle function therapy device 10 of the present embodiment is integrally formed with an elastic resin material as a whole. Specifically, the above-mentioned resin material is selected from, for example, silicone resins, polyolefin-based resins, styrene-based resins, acrylic resins, and the like. The above-mentioned resin material is preferably colorless, transparent or milky white, so that when inserted into the oral cavity, it is not conspicuous when installed on the upper dentition 1 and the lower dentition 2, and has good aesthetics.

The muscle function therapy device 10 is a molded product (aligner) that is molded into a shape in which the teeth of the upper dentition 1 and the lower dentition 2 are gradually moved in the direction to be aligned. The muscle function therapy device 10 is prepared in stages, for example, a plurality of devices of different sizes or devices of different hardness, and corrective treatment is performed by periodically replacing those.

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 by 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 with the outer peripheral wall 12 in plan view.

The outer peripheral wall 12 is provided on the outer peripheral edge side of the base portion 11, and is formed to protrude 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 left-right symmetrical shape with the portion corresponding to the middle incisor 3 of the front teeth as the center.

As shown in FIG. 1 , the outer peripheral upper wall 13 is formed with a V-shaped notch portion 13 a in order to fit the upper lip frenade at the center in the left-right direction. The outer peripheral lower wall 14 is formed so as to gradually increase in height relative to the base portion 11 from the grinding tooth side to the front tooth side.

As shown in FIG. 3 , the inner peripheral lower wall 24 is formed on the inner peripheral edge side of the base portion 11 and protrudes 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 left-right symmetrical shape at the front teeth portion with the portion corresponding to the middle incisor 3 of the front teeth as the center.

The outer peripheral upper wall 13 and the base portion 11 are continuously and integrally formed, and the outer peripheral upper wall 13 and the base portion 11 form the upper dentition contact portion 11a to which the front teeth and grinding teeth of the upper dentition 1 come into contact. . 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 outer peripheral lower wall 14 , the base portion 11 , and the inner peripheral lower wall 24 are formed for inserting the lower dentition. 2 groove-shaped lower dentition insertion portion 11b.

On the inner peripheral lower wall 24, the left and right protruding portions 25 that bulge to the grinding tooth side are integrally formed. These left and right protruding portions 25 are formed to be thick and solid along the inner side of the lower tooth row 2 by extending downward in the inner side of the base portion 11 . The left and right protruding portions 25 are formed along the inner surface of the lower dentition 2 along the inner surface of the lower dentition 2 at the outer edge. The upper side surfaces of the left and right protruding portions 25 serve as tongue placement portions 26 on which the tongue 4 is placed. The tongue placement portion 26 extends toward the inner side of the U-shape of the base portion 11 to substantially the same plane as the base portion 11 . The tongue mounting portion 26 and the left and right protruding portions 25 are formed at a height equal to or higher than the upper end of the tooth crown portion of the lower tooth row 2 . In other words, the tongue placing portion 26 is configured so that the tongue tip 4b and the tongue edges 4c on both sides are placed at a height higher than the upper end of the tooth crown portion of the lower dentition 2 . In addition, when the tongue tip 4b and the tongue edges 4c on both sides are placed on the tongue mounting portion 26, the tongue tip 4b is configured to contact the middle incisors 3 of the front teeth of the upper dentition 1. In addition, the thickness from the tongue placement portion 26 to the lower side surfaces of the left and right protruding portions 25 is formed to be thicker than the base portion 11 .

The left and right protruding portions 25 are arranged so that the inner wall 25a side thereof faces the tongue frenulum 4a of the tongue 4, respectively. Furthermore, between the left and right inner walls 25a of the protruding portion 25 is formed to gradually expand in the direction (rearward) of the lingual frenulum 4a with respect to 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 on the side of the tongue tie 4a between the left and right inner walls 25a of the protruding portion 25 is set to about 7 to 8 mm.

When the dimension on the side of the tongue tip 4b between the above-mentioned left and right inner walls 25a is less than 2 mm, some patients cannot insert the lingual frenulum 4a and cannot move the tongue 4 easily. A part of it enters between the left and right inner walls 25a of the protruding portion 25 together with the lingual frenulum 4a, and there is a possibility that the movement of the tongue 4 is restricted.

Similarly, when the dimension on the side of the lingual frenulum 4a between the left and right inner walls 25a is less than 7 mm, some patients may not be able to insert the root of the lingual frenulum 4a and cannot move the tongue 4 easily. A part of the lower surface of the tongue 4 enters between the left and right inner walls 25a of the protruding portion 25 together with the lingual frenulum 4a, and the movement of the tongue 4 may be restricted.

Next, the action 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 suitable, for example, for infants in the deciduous stage from three to six years old. First, the muscle function therapy device 10 is inserted into the oral cavity of the infant, and installed in the upper dentition 1 and the lower dentition 2 . At this time, the upper dentition 1 is brought into contact with the upper dentition abutting portion 11a, the lower dentition 2 is inserted into the lower dentition insertion portion 11b, and the outer edge portions of the left and right protruding portions 25 are installed so as to be close to each other. The inner surface of the lower dentition 2. At the same time, the tongue 4 is placed on the tongue placement portion 26 on the upper side surface of the left and right protruding portions 25 .

Here, when the tongue 4 is placed on the tongue placement portion 26, since the left and right protruding portions 25 are formed thick and solid, the tongue placement portion 26 can be securely held so that the tongue tip 4b of the tongue 4 is in contact with the mouthpiece. And the middle incisors 3 of the front teeth of the upper dentition 1. At the same time, since the left and right protruding portions 25 formed thick and solid are close to the lower dentition 2, the lower dentition 2 can be prevented from falling to the tongue 4 side beforehand. In this case, when the left and right protruding portions 25 are thin and hollow, the lower dentition 2 cannot be held by the left and right protruding portions 25, and the lower dentition 2 may fall to the tongue 4 side.

In this way, the tongue tie 4a is embedded in the grinding tooth side between the left and right inner walls 25a of the protruding portion 25 , and the tongue tip 4b abuts the mouth cover and the middle incisors 3 of the front teeth of the upper dentition 1 . In this state, the mouth is closed so that the upper and lower lips are in contact. Thereby, by the tongue placement portion 26 in which the tongue 4 is always placed at a height higher than the upper end of the tooth crown portion of the lower dentition 2, the muscle function of the muscles around the oral cavity can be adjusted in a short period of time, and the overall improvement and prevention including the lower jaw can be prevented. Sudden malocclusion.

In addition, when the height of the tongue placing portion 26 is at the height of the gingival inner surface of the lower dentition 2 of the lower jaw, the tongue 4 can be easily placed, and conversely, the height of the tongue tip 4b is reduced, which is used to improve the malocclusion including the mandibular protrusion. duration is longer.

According to the muscle function therapy device 10 of the present embodiment, the tongue placing portion 26 extending inward from the base portion 11 and placing the tongue 4 at a height above the upper end of the crown portion of the lower dentition 2 is provided, Therefore, the tongue tip 4b is always in contact with the mouth flap and the upper dentition 1, and the period for overall improvement of malocclusion including the mandibular protrusion can be greatly shortened, and the malocclusion can also be completely prevented.

In addition, according to the present embodiment, since the protruding portion 25 is provided along the inner side of the lower dentition 2 extending below the base portion 11 , and the tongue placing portion 26 is formed on the upper side surface of the protruding portion 25, it is possible to Prevent the lower dentition 2 from falling to the tongue 4 side before it happens.

In addition, according to the present embodiment, since the outer edge of the protruding portion 25 is close to the inner surface of the lower dentition 2, the lower dentition 2 can be prevented from falling to the tongue 4 side beforehand.

In addition, according to the present embodiment, since the protrusions 25 are arranged so that the left and right inner walls 25a sides face the lingual frenulum 4a of the tongue 4, respectively, the protrusions 25 do not interfere when the tongue 4 is moved.

In addition, according to this embodiment, since the space between the left and right inner walls 25a of the protruding portion 25 is formed to expand in the direction of the lingual frenulum 4a of the tongue 4, it is possible to further eliminate the situation that the protruding portion 25 interferes when the tongue 4 is moved. .

In addition, according to the present embodiment, since 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, it is possible to further eliminate the situation that the protruding portion 25 interferes when the tongue 4 is moved, and Tongue 4 is easy to place. [Variation of one embodiment of the invention] 4 is a cross-sectional view showing an orthodontic tool according to a modification of one embodiment of the present invention. In addition, the same code|symbol is attached|subjected to the same part as the above-mentioned one Embodiment, and a different structure and operation are demonstrated.

As shown in FIG. 4, the muscle function therapy apparatus 10A of this modification is provided with the hollow part 25b which is linear in the front-back direction, and is formed in the cross-sectional circular shape in the inner side of the protrusion part 25 close to the left and right. Even if the hollow portions 25b are formed in the left and right protruding portions 25 in this way, the outer sides of the left and right protruding portions 25 have a predetermined thickness. Prevent the lower dentition 2 from falling to the tongue 4 side before it happens.

In this way, according to this modification, by forming the hollow portions 25b on the inner sides of the protruding portions 25 close to the left and right, respectively, the weight reduction of the orthodontic tool 10A can be achieved.

In addition, in this modification, the cross-sectional shape of the hollow portion 25b is described as an example in which the cross-sectional shape is circular, but it is not limited to this shape, as long as it is close to the inner side of the left and right protruding portions 25, and the outer edge portion has a retaining As far as the strength of the inner surface of the lower dentition 2 is concerned, other shapes may be formed. [Other Embodiments of Invention] In addition, the above-described embodiment is an illustration of the present invention, and it goes without saying that the present invention is not limited to the above-described embodiment.

In the above-mentioned embodiment, the description has been given of the case where the muscle function therapy device 10 is installed on a child, but the present invention is not limited to this. During the period of overall improvement of malocclusion, the overall prevention of malocclusion and the restraint effect for preventing the receding of teeth after orthodontic treatment can also be obtained.

In addition, in the above-mentioned embodiment, regarding the material and shape of the muscle function therapy device 10, as long as it can be inserted into the oral cavity and has the same function, it may be composed of an appropriate material.

1: Upper dentition 2: Lower dentition 3: Middle incisor 4: Tongue 4a: Tongue tie 4b: tip of tongue 4c: Tongue edge 10,10A: Muscle function therapy device 11: Base part 11a: Abutting part of upper dentition 11b: Lower dentition insertion part 12: Peripheral wall 13: Peripheral upper wall 14: Peripheral lower wall 24: Inner peripheral lower wall 25: Bulge 25a: inner wall 25b: hollow part 26: Tongue placement part

1 is a plan view showing an orthodontic tool according to an embodiment of the present invention. [Fig. 2] is a cross-sectional view taken along the line II-II in Fig. 1. [Fig. [ Fig. 3] Fig. 3 is a longitudinal sectional view showing a state in which the orthodontic tool of Fig. 1 is installed in the oral cavity. [ Fig. 4] Fig. 4 is a cross-sectional view showing an orthodontic tool according to a modification of one embodiment of the present invention.

1: Upper dentition

2: Lower dentition

4: Tongue

4a: Tongue tie

10: Muscle function therapy device

11a: Abutting part of upper dentition

11b: Lower dentition insertion part

12: Peripheral wall

13: Peripheral upper wall

14: Peripheral lower wall

25: Bulge

25a: inner wall

26: Tongue placement part

Claims (6)

A muscle function therapy device, comprising: The base part is clamped by the upper dentition of the upper jaw and the lower dentition of the lower jaw, and is U-shaped in plan view; an upper dentition contact portion, the upper dentition abuts on the upper side of the base portion; and The lower dentition insertion portion is groove-shaped and allows the lower dentition to be inserted into the lower side of the base portion, To adjust the muscle function of the muscles around the mouth, it is characterized by: A tongue mounting portion is provided which extends inward from the base portion and mounts the tongue at a height higher than the upper end of the crown portion of the lower dentition. The muscle function therapy device of claim 1, wherein, A protruding portion is provided extending below the base portion and along the inner side of the lower dentition, and the tongue placing portion is formed on the upper side surface of the protruding portion. The muscle function therapy device of claim 2, wherein, The outer edge of the protruding portion is close to the inner surface of the lower tooth row. The muscle function therapy device of claim 2 or 3, wherein, The said protruding part is arrange|positioned so that the inner wall side of the right and left may face the lingual frenulum of the said tongue. The muscle function therapy device of claim 2, 3, or 4, wherein, Between the left and right inner walls of the protruding portion is formed to expand in the direction of the lingual frenulum of the tongue. The muscle function therapy device of claim 4 or 5, wherein, The dimension on the tongue tip side between the left and right inner walls of the protruding portion is set to 2 to 4 mm.

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