WO2006054398A1

WO2006054398A1 - Mastication trainig tool

Info

Publication number: WO2006054398A1
Application number: PCT/JP2005/018328
Authority: WO
Inventors: Koichiro Ueda; Naoto Suzuki; Takayuki Miyahara
Original assignee: Nihon University
Priority date: 2004-11-16
Filing date: 2005-10-04
Publication date: 2006-05-26
Also published as: JPWO2006054398A1; JP4604208B2

Abstract

An inexpensive tool for training biting having appropriate flexibility required for training biting of a dysphagia person and accelerating secretion of saliva while preventing aspiration. The mastication training tool comprises a polyethylene-film insertion bag of flat cross-section being interposed between the occlusal surfaces of upper and lower jaw teeth rows, and a polyethylene-film grasping bag being coupled with the insertion bag through an interconnecting passage. Semisolid material of a predetermined viscosity is encapsulated in the insertion bag and/or the grasping bag such that it can move between the insertion bag and the grasping bag. The insertion bag and the grasping bag are arranged such that the grasping bag shrinks simultaneously with inflation of the insertion bag as the semisolid material moves into the insertion bag and the insertion bag shrinks simultaneously with inflation of the grasping bag as the semisolid material moves into the grasping bag.

Description

Specification

Mastication training equipment

Technical field

The present invention relates to a mastication training device used for rehabilitation of masticatory muscles, facial muscles and the like for a dysphagic person.

Background art

[0002] A person uses the tongue to send chewed food to the pharynx and swallows it. At this time, the soft palate (the part of the ceiling of the soft mouth with no bones) is raised, the mouth and nasal cavity are blocked, the trachea is capped with the epiglottis, and the bolus (to the esophagus that opens only at the moment of swallowing) Feed food that can be swallowed.

Dysphagia occurs when some kind of damage occurs in the nerves and muscles involved in such a series of complex movements. Dysphagia caused by diseases such as stroke sequelae, traumatic brain injury, Parkinson's disease, and aging are mainly caused by muscle atrophy of the masticatory muscles, and there is also a difference in the left and right biting force (bite force) Increases the degree of disability.

[0003] In order to rehabilitate this masticatory muscle and eliminate the difference between the left and right occlusal forces, occlusal training is performed. This occlusal training has been conventionally performed as follows. That is, `` Tongue depressor (length: 150 mm x width: 10 mm narrow, oval plate-like body) and split chopsticks are placed on the occlusal surface of the upper and lower molars on one side, the mouth is opened, and Do 10 actions to the left and right. In such an occlusal training, it is important to keep the mouth open and close to the maximum in order to make sure that the opening and closing movements are performed and that the person is consciously engulfed. It is said that the healthy side also needs to be performed to supplement the paralyzed side and acquire more efficient chewing.

[0004] In this occlusal training, it is also effective to use a glass or gum instead of a piece of wood that is a tongue depressor or disposable chopsticks. In other words, it can be expected that simmering or gum tastes as it is chewed, so that saliva secretion is promoted, and chewing and swallowing can be induced. During occlusal training, the practitioner grabs one end of the noodle, and massages the gum with a gauze. [0005] Regarding the gum used for occlusal training, there is an invention disclosed in Japanese Unexamined Patent Publication No. 2002-220332.

The present invention provides a dental training gum for use in improving masticatory function or promoting dental orthodontic treatment and retention after dental orthodontic treatment, and also having dental caries preventing effect. providing use gum "it is an object, including its gum saliva secretion promoter" Gamube one scan content is 25 to 80 mass ^_0/0 as a solution, the saliva buffer capacity improvers and caries preventive agent It is characterized by not being ".

Patent Document 1: JP 2002-220332 A

Disclosure of the invention

Problems to be solved by the invention

[0006] However, when a piece of wood such as a tongue depressor or disposable chopsticks is used for this bite training, it cannot be expected to promote the secretion of saliva as it does not taste as it tastes. It is never triggered.

[0007] In addition, the use of foods such as shrimp and gums are left to the patient's own free chewing, and training cannot be standardized, resulting in aspiration in which shrimp or gums enter the trachea as a bolus There is also. This latter problem can be solved even by the invention disclosed in Japanese Patent Laid-Open No. 2002-220332.

[0008] Therefore, the present invention has an appropriate flexibility necessary for occlusion training, can be expected to promote saliva secretion, can prevent aspiration, and can be manufactured at low cost. The purpose is to provide a mastication training tool used in the field.

Means for solving the problem

[0009] In order to achieve the above object, a mastication training tool according to the invention of claim 1 of the present application includes an inflatable and inflatable insertion bag having a flat cross section inserted into the occlusal surface of the upper and lower jaw dentition, and the insertion. An inflatable and inflatable gripping bag connected to the bag via the communication path, and the insertion bag and the gripping bag are movable to each other between the insertion bag and the gripping bag via the communication path. It is characterized in that a predetermined amount of a semi-fluid having a viscosity of 10% is enclosed.

The mastication training tool according to the invention of claim 2 of the present application is the mastication training tool according to claim 1 of the present application, wherein the intervention bag is substantially rectangular, horseshoe-shaped, The filling amount of the semi-fluid enclosed in the insertion bag and the gripping bag is substantially the same as the volume when the intervention bag or the gripping bag is inflated. In the mastication training tool according to the invention of claim 3, the viscosity of the semi-fluid is 20 Pa's to 300 Pa 's, and the communication path to which the substantially rectangular or semi-circular insertion bag is connected is provided. sectional area 0. 19mm ^² ~3. 14mm ^2, the cross-sectional area of the communication passage said through挿袋horseshoe are connected ^{^{is, 0. 38mm 2 ~6. 28mm 2}} , the through挿袋and the gripping The bag is a polymer film, more preferably a polyethylene film.

Further, in the mastication training tool according to claim 4 of the present application, in the mastication training tool according to any one of claims 1 to 3, the width of the portion connected to the communication path of the insertion bag is gradually narrowed. It is characterized by being in a bowl shape and connected to the communication path.

The mastication training tool according to claim 5 of the present application is the mastication training tool according to any one of claims 1 to 4, wherein the semi-fluid contains a fragrance. Features.

The invention's effect

As described above, according to the invention of claim 1 of the present application, the semi-fluid having a predetermined viscosity is sealed in the inflatable / inflatable insertion bag and the inflatable / retractable gripping bag connected via the communication path. The care bag is inserted into the occlusal surface of the upper and lower jaw dentition!

When using the mastication training tool according to the present invention, the person who performs rehabilitation (hereinafter referred to as “the practitioner”) holds the gripping bag and receives the rehabilitation (hereinafter referred to as “the disabled”). The intervention bag is inserted into the occlusal surface of the lower dentition. When the practitioner presses the gripping bag, the enclosed semi-fluid moves to the insertion bag and inflates the intervention bag. When the disabled person closes the mouth, the insertion bag is pressed and the semi-fluid flows to the gripping bag. Move to and inflate the gripping bag. By repeating this operation, occlusion training is performed.

In occlusion training performed in this way, the force against the muscle strength of the masticatory muscles when the disabled person closes the mouth is the viscosity of the semi-fluid, the area of the communication path through which the semi-fluid moves and the practitioner Can be adjusted by the pressing force of pressing the gripping bag, and appropriate rehabilitation can be performed according to the degree of disability of the handicapped. In addition, because the care bag has a flat cross section, it remains stable even when placed on the occlusal surface of the mandibular molar. Can have.

[0011] According to the invention of claim 2, the shape of the insertion bag is substantially rectangular, horseshoe-shaped, or semi-circular along the upper and lower jaw dentition in plan view. Mastication training tools with an insertion bag shape of approximately rectangular and horseshoe shape are mainly used for molar bite training, and the insertion bag does not interfere with tongue movement, which is an important element in bite training. . In addition, a mastication training tool having a semicircular insertion bag is mainly used for occlusal training of the anterior teeth, so it does not interfere with tongue movement. If the insertion bag has a horseshoe shape, it can be placed on the occlusal surfaces of the left and right mandibular molars to perform left and right occlusion training simultaneously. Furthermore, since the amount of the semi-fluid encapsulated in the mastication training tool according to the present invention is substantially the same as the volume when the intervention bag or the gripping bag is expanded, the other is effectively expanded by pressing one. Therefore, with regard to insertion bags, the difference between inflating and deflating becomes large, and occlusal training can be performed effectively.

Furthermore, according to the invention of claim 3 of the present application, the viscosity of the semi-fluid is 20 to 300 Pa ′s, and the cross-sectional area of the communication path is 0.19 to 3.14 mm ² , or 0.38 to 6 Because it is 28 mm ² , when a disabled person presses the support bag through the mouth, it can receive the resistance force from the support bag that is optimal for rehabilitation.

[0013] In addition, the insertion bag and the gripping bag are made of a polymer film! /, And by selecting a polymer film having a predetermined strength, it is possible to withstand multiple uses, and a holding bag is also used. Since it is made of a polymer film, the insertion bag, the gripping bag, and the communication path can be integrally formed. As a method for this integral molding, there are a heat fusion method and a blow molding method. Furthermore, the polyethylene film in the polymer film is chemically inactive and has high stability against various chemicals, so it has excellent safety.

In addition, when the polyethylene film formed by integral molding is further covered with a polyethylene film, the number of times that the mastication training tool is used increases, and even if a hole is formed in the polyethylene film during use of the chewing training tool. However, the semi-fluid does not leak out.

[0014] According to the invention according to claim 4 of the present application, the portion where the insertion bag is connected to the communication path has a bowl-like shape in which the width of the insertion bag is gradually narrowed. Bite a care bag Even when combined, the semi-fluid does not stay temporarily at the entrance of the communication path, and smoothly moves through the communication path into the gripping bag.

[0015] Further, according to the invention of claim 5, since the semi-fluid contains an fragrance such as vanilla or stove belly, a polyethylene film is used as the chewing composition according to the present invention. When used as a training tool material, the scent component leaks slightly outside during occlusion training, which stimulates saliva secretion and induces mastication and swallowing. Can be performed efficiently.

Brief Description of Drawings

FIG. 1 is a plan view of a mastication training tool according to Example 1. FIG.

FIG. 2 is a plan view of a mastication training tool according to Embodiment 2.

FIG. 3 is a plan view of a mastication training tool according to Embodiment 3.

FIG. 4 is a plan view of a mastication training tool according to Example 4.

FIG. 5 is a plan view of a mastication training tool according to Embodiment 5.

[Fig. 6] Fig. 6 is a cross-sectional view of the mastication training tool according to Examples 1 to 5, and Fig. 6 (a) is a view taken along arrows A-A in Fig. 1 to Fig. 5 and Fig. 6 (b). ) Is a view taken along arrows B-B in FIGS.

FIG. 7 is a graph showing the relationship between the viscosity of the semi-fluid and the cross-sectional area of the communication path.

Explanation of symbols

[0017] 1 Mastication training device according to Embodiment 1

2 Mastication training tool according to Example 2

3 Mastication training tool according to Example 3

4 Mastication training tool according to Example 4

5 Mastication training tool according to Example 5

10 Care bags

12 Grasping bag

14 Communication passage

16 Polyethylene film

18 Semi-fluid 20 Fusion part

20a End fusion part

20b Center fusion part

20c Side fusion part

BEST MODE FOR CARRYING OUT THE INVENTION

[0018] Hereinafter, Examples 1 to 5 according to the best mode for carrying out the present invention will be described with reference to Figs. FIG. 1 is a plan view of the mastication training tool according to Example 1, FIG. 2 is a plan view of the mastication training tool according to Example 2, and FIG. 3 is a plan view of the mastication training tool according to Example 3. FIG. 4 is a plan view of the mastication training tool according to the fourth embodiment, and FIG. 5 is a plan view of the mastication training tool according to the fifth embodiment. FIG. 6 is a cross-sectional view of the mastication training tool according to Example 1 to Example 5. FIG. 6 (a) is a view taken along arrows A—A in FIG. 1 to FIG. 5, and FIG. FIG. 6 is a BB arrow view in FIGS. Fig. 7 is a graph showing the relationship between the viscosity of the semi-fluid and the cross-sectional area of the communication path.

1 to 5, reference numeral 1 is a mastication training tool according to Example 1, reference numeral 2 is a mastication training tool according to Example 2, reference numeral 3 is a mastication training tool according to Example 3, and reference numeral 4 is an implementation. Mastication training tool according to Example 4, reference numeral 5 is a mastication training tool according to Example 5, reference numeral 10 is an intervention bag, reference numeral 12 is a gripping bag, reference numeral 14 is a communication path, reference numeral 16 is a polyethylene film, reference numeral 18 is half Fluid, reference numeral 20 is a fusion part, reference numeral 20a is an end fusion part, reference numeral 20b is a central fusion part, and reference numeral 20c is a side fusion part.

First, Example 1 will be described based on FIG. 1, FIG. 6, and FIG. The mastication training tool 1 is used for molar occlusion training as described above, but is a rectangular bag 10 in a plan view, a grasping bag 12 in a plan view and a pouch 10 and a grasping bag 12. The communication bag 14 and the grasping bag 12 are rectangular in shape, and the mastication training tool 1 as a whole is also rectangular. In addition, the intervention bag 10 and the gripping bag 12 are inflatable and sagable.

The fluid bag 10, the gripping bag 12, and the communication path 14 are filled with a semi-fluid 18, and the semi-fluid 18 passes between the care bag 10 and the gripping bag 12 through the communication path 14. I can go back and forth. This movement of the semi-fluid 18 is caused by either the intervention bag 10 or the gripping bag 12. It is triggered by pressing either one.

[0021] The mastication training tool 1 is sandwiched between two polyethylene films 16 and 16 with a semi-fluid 18 sandwiched between the end fusion part 20a, the central fusion part 20b, and the side fusion part 20c. The two polyethylene films 16 and 16 are pressed and heated by a mold that presses and heats the portions corresponding to the end fused portion 20a, the central fused portion 20b, and the side fused portion 20c. At the same time, it is manufactured by cutting the heat-sealed portion along the outer edge of the mastication training tool 1. In the mastication training tool 1, “Aqua Fresh” manufactured by Earth Pharmaceutical Co., Ltd., which is a toothpaste containing a fragrance, and “Denter” manufactured by Lion Co., Ltd., which are toothpastes containing a fragrance, were used.

It should be noted that the mastication training tool 1 can be integrally molded by professional molding, as described above, by the force integrally molded by the heat fusion method. In this case, the fusion part is not necessary, and the mastication training tool has a neat shape without the edge of the fusion part.

[0022] The end fusion part 20a is heat-sealed with respect to the entire width in the width direction of the mastication training tool 1, but the central fusion part 20b is heat-sealed leaving a part. The remaining part forms the communication path 14. Further, both the end fusion part 20a and the central fusion part 20b also have a function of maintaining the cross-sectional shape of the insertion bag 10 flat. This horizontally long and flat cross section allows the acupuncture bag 10 to be placed stably on the lower molars of the handicapped and the size of the mastication training tool 1 is due to the movement of the semi-fluid 18 The length (L) is approximately 130 mm, the width (W) is approximately 12 mm, and the height (T) is approximately 6 mm when the support bag 10 and the gripping bag 12 are of equal height. Of course, this dimension can be changed as appropriate for the handicapped person, and when it is intended for infants and school children, it should be made slightly smaller. The cross-sectional area (S) of the communication path 30 is 3.0 mm ² , and the viscosity (P) of the semi-fluid 18 is 150 Pa ′s.

[0023] The cross-sectional area of the communication path 14 and the viscosity of the semi-fluid 18 are such that when the disabled person closes and presses the intervention bag 10 inserted in the occlusal surface of the upper and lower molars, It is an important factor for giving a predetermined resistance. Therefore, the relationship between the cross-sectional area of the communication path 14 and the viscosity of the semi-fluid 18 is important, and the relationship between the cross-sectional area of the communication path 14 and the viscosity of the semi-fluid 18 in the present invention will be described with reference to FIG. [0024] The graph shown in FIG. 7 is based on an experiment conducted on the subject, and the resistance felt to be favorable when the subject closes the mouth and presses the interventional bag 10 with the upper and lower molars. The range in which is obtained. Of course, this resistance varies depending on the degree of disability of the handicapped person, which is not strictly determined numerically, and when a greater resistance is required, a treatment for grasping the grasping bag 12 is performed. Since the resistance force can be increased if the person presses the gripping bag 12, the graph shown in FIG.

In Fig. 7, the horizontal axis (X axis) is viscosity (P) and the unit is Pa's. The vertical axis (Y axis) is the cross-sectional area (S) and the unit is mm ² . Line a is on line X = 20, line b is on line Y = 3.14, line c is on line Χ = 300, and line d is on line は = 0.19 Therefore, the partial force in the quadrilateral surrounded by the line segments a, b, c, and d is the preferred partial cross-sectional area of the communication path 14 and the preferred viscosity of the semi-fluid 18.

Next, mastication training tools according to Example 2 and Example 3 will be described with reference to FIGS. 2 and 3. Both Example 2 and Example 3 have the same configuration and the same size as the mastication training tool 1, and the difference is the shape in plan view.

[0026] In the mastication training tool 2, the portion connected to the communication passage 14 of the intervention bag 10 has a bowl shape, and the portion connected to the communication passage 14 of the holding bag 12 also has a bowl shape. Yes. For this reason, even when a handicapped person bites the support bag vigorously during occlusion training, the semi-fluid 18 does not stay temporarily at the entrance of the communication path 14 and moves smoothly into the gripping bag. To come. The portion connected to the communication path 14 of the gripping bag 12 is also shaped like a bowl. The shape of the mastication training tool is symmetrical with respect to the communication path 14 so that the gripping bag 12 is inserted into the insertion bag 10. This is because it can also be used as This is true even when the mastication training device 1 is connected. It should be noted that in Example 1, the portion connected to the communication path of the insertion bag cannot be made into a bowl shape. ^.

Further, the end fused portion 20a of the mastication training tool 2 is substantially semicircular in plan view. By having a substantially semicircular shape in this way, the handicap when the disabled person inserts the mastication training tool 2 into the oral cavity is improved. The same applies to the mastication training tool 1 described above and the mastication training tools 3 to 5 described later. [0027] The mastication training tool 3 has a distance C between the central axis of the support bag 10 and the central axis of the grasping bag 12 of about 40 mm.

Three

It has a crank shape. By using a crank shape, the practitioner can easily place the mastication training tool on the lower molars of the disabled person even when the disabled person does not open his mouth greatly.

Next, Example 4 will be described. The mastication training tool 4 has substantially the same configuration as the mastication training tool 1, and the difference from the mastication training tool 1 is the shape in plan view. Therefore, only the configuration of the mastication training tool 4 different from that of the mastication training tool 1 will be described.

[0029] The mastication training tool 4 is used when the left and right molars are simultaneously bitten and trained. The mastication training tool 1 is a horseshoe-shaped intervention bag 10 in plan view, a grasping bag 12 having a substantially rectangular plan view, and The communication bag 14 communicates with the intervention bag 10 and the gripping bag 12. That is, the horseshoe-shaped coupling end of the support bag 10 is connected to the substantially rectangular gripping bag 12 via the communication path 14, and the overall shape is Y-shaped. The intervention bag 10 and the gripping bag 12 are both inflatable and inflatable. The fluid bag 10, the grasping bag 12, and the communication passage 14 are filled with the semi-fluid 18, the movement of the semi-fluid 18 through the communication passage 14, and the material forming the mastication training tool 2 and the inside thereof. The material of the encapsulated semi-fluid 18 is the same as that of the mastication training tool 1.

[0030] The size of the mastication training tool 4 is such that the length (L) is approximately 130 mm and the width (W ) Is approximately 55mm, and height (T) is approximately

4 4

The length (L) of the meridian bag 10 itself, which is 6 mm and has a horseshoe shape, is approximately 65 mm,

41

The width (W) of the tube-shaped insertion bag constituting 10 is approximately 12 mm. And the rectangle

41

The size of the gripping bag 20 itself is approximately 65 mm in length (L) and approximately 30 mm in width (W).

42 42

The cross-sectional area (2S) of the communication path 14 is 6.0 mm ² . Needless to say, this dimension can be changed as appropriate for the disabled.

[0031] It should be noted that the graph shown in FIG. 7 is a force applied also in the mastication training tool 4, and in applying the force, the communication path in the mastication training tool 4 with respect to the cross-sectional area (S) of the communication path 14 obtained in FIG. The cross-sectional area of 14 needs to be 2S, which is doubled. Of course, this dimension can be changed as appropriate for the target disabled person. This is because mastication training tool 1 is placed on the occlusal surface of the upper and lower molars on one side during occlusion training, while mastication training tool 4 is placed on the occlusal surface of the upper and lower molars on both sides. When the mouth is closed, the mastication training tool 2 Compared to the mastication training tool 1, about half the amount of the semi-fluid 18 passes through the communication path 14.

Next, Example 5 will be described. Like the mastication training tool 4, the mastication training tool 5 has substantially the same configuration as the mastication training tool 1, and is different from the mastication training tool 1 in the shape in plan view. Therefore, only the configuration of the mastication training tool 5 that is different from the mastication training tool 1 will be described.

[0033] The mastication training tool 5 is used for the training of anterior teeth biting training, and the mastication training tool 1 is a semicircular support bag 10 in plan view, a grasping bag 12 and a support bag 10 in plan view having a substantially rectangular shape. And a communication passage 14 communicating with the gripping bag 12. That is, the semicircular circular portion of the intervention bag 10 is connected to the substantially rectangular gripping bag 12 via the communication path 14, and the overall shape is cup-shaped. The intervention bag 10 and the gripping bag 12 are both inflatable and inflatable bags. Semi-fluid 18 is enclosed in insertion bag 10, grasping bag 12 and communication passage 14, and movement of semi-fluid 18 via communication passage 14 is enclosed in the material forming mastication training tool 5 and inside. The material of the semi-fluid 18 to be used is the same as that of the mastication training tool 1.

[0034] The size of the mastication training tool 5 is such that the length (L) is approximately 90 mm and the width (W ) Is approximately 40mm and height (T) is approximately 6

5 5

The length (L) of the support bag 10 itself, which is a semicircular shape, is approximately 30 mm. And

51

The size of the gripping bag 20 itself having a rectangular shape is approximately 60 mm in length (L) and approximately 12 m in width (W).

52 52

m, and the cross-sectional area (S) of the communication path 14 is 3.0 mm ² . The graph shown in FIG. 7 is also applied to the mastication training tool 5 as it is. Of course, this dimension can be changed as appropriate for the disabled person.

Next, occlusion training using the mastication training tool 1 to the mastication training tool 5 will be described. Here, the occlusion training of the mastication training tool 1 will be mainly described, and the mastication training tool 2 to the mastication training tool 5 will be described only in the points different from the bite training of the mastication training tool 1.

(1) First, the practitioner grasps the grasping portion 12 of the mastication training tool 1 and inserts the intervention bag 10 into the occlusal surface of the upper and lower jaw dentition of the paralyzed side of the handicapped person whose mouth is opened.

(2) The practitioner presses the gripping part 12 by hand to move the semi-fluid 18 in the gripping part 12 to the intervention bag 10 and inflates the intervention bag 10. (3) When the handicapped person closes, the semi-fluid 18 in the intervention bag 10 moves to the holding part 12 by the pressing force of the intervention bag 10 being pressed, and the holding part 12 is inflated. At this time, when the practitioner presses the grip portion 12 with a constant pressing force, the resistance force from the insertion bag 10 received when the handicapped person closes can be adjusted.

(4) Repeat steps (1) to (3) above 10 times.

(5) After that, the occlusal training of (1) to (4) is also performed on the healthy side of the disabled.

The mastication training tool 2 and the mastication training tool 3 are performed in the same process as the bite training of the mastication training tool 1 described above. In addition, the mastication training tool 4 is performed by the same process as the above-described mastication training tool 1, but the mastication training tool 4 is performed by placing the intervention bag 10 on the occlusal surfaces of the upper and lower molars on both sides. Step 5) is omitted. With regard to the mastication training tool 5, the force mastication training tool 5 used in the steps (1) to (4) is used for the occlusal training of the anterior teeth. “Place the meridian bag 10 on the occlusal surface of the molar” will be read as “Place the meridian bag 10 on the occlusal surface of the upper and lower front teeth”.

Claims

The scope of the claims

[1] An inflatable and inflatable insertion bag with a flat cross-section inserted in the occlusal surface of the upper and lower jaw dentition,

An inflatable and inflatable gripping bag connected to the insertion bag via a communication path;

A predetermined amount of a semi-fluid having a predetermined viscosity that can move between the insertion bag and the gripping bag is enclosed in the insertion bag and the gripping bag through the communication path. Chewing training tool.

[2] The intervention bag is substantially rectangular, horseshoe-shaped or semicircular along the upper and lower jaw dentition in plan view, and the filling amount of the semi-fluid enclosed in the insertion bag and the gripping bag is the intervention bag The mastication training tool according to claim 1, wherein the pouch or the gripping bag has substantially the same capacity as that when inflated.

[3] The viscosity of the semi-fluid is 20? & '5-300? &' 5,

Cross-sectional area of the communication passage substantially rectangular or semicircular the intervention挿袋is connected is ^{^{0. 19m m 2 ~3. 14mm 2}} , the cross-sectional area of the communication passage said through挿袋horseshoe are connected 0 38 mm ^{2 to} 6. 28 mm ² ,

The mastication training tool according to claim 1 or 2, wherein the insertion bag and the gripping bag are polymer films, more preferably a polyethylene film.

[4] The portion of the insertion bag connected to the communication path has a bowl shape with a gradually narrowing width, and is connected to the communication path. 3. The mastication training tool according to any one of the above.

[5] The mastication training tool according to any one of claims 1 and 4, wherein the semi-fluid contains a fragrance.