WO2020013018A1

WO2020013018A1 - Mouthpiece and production method for same

Info

Publication number: WO2020013018A1
Application number: PCT/JP2019/026197
Authority: WO
Inventors: 七海秀之; 田中秀武
Original assignee: Ｎｅｕｔｒａｌ株式会社
Priority date: 2018-06-29
Filing date: 2019-07-01
Publication date: 2020-01-16
Also published as: JP2020006169A; JP6834096B2; JP6834096B6

Abstract

[Problem] All conventional mouthpieces are based on the assumption of clenching or biting of the mouthpiece. However, clenching hinders agility, flexibility and so on, making it easy to become tired. Furthermore, the act itself of continually clenching leads to fatigue, resulting in a reduction in performance, injury and breakdown. [Solution] As a result of producing a mouthpiece that causes the position of the temporomandibular joint to be at a position (neutral position) that enables a relaxed state in connection with the muscles and joints of the entire body, the balance between the muscles and joints of the entire body is improved when using the mouthpiece, and, furthermore, performance is improved in sports and daily life.

Description

Mouthpiece and manufacturing method thereof

The present invention relates to a mouthpiece and a method of manufacturing the mouthpiece.

Conventionally, mouthpieces of various shapes and materials have been proposed as mouthpieces for sports or medical use. For example, in the case of sports, a mouthpiece whose main purpose is to protect teeth, intraoral tissues, or perioral tissues is required, and mouthpieces having a certain thickness or strength have been developed (for example, , Patent Document 1).

マウス Furthermore, mouthpieces have been developed not only to protect teeth and tissues around the mouth, but also to improve performance in sports. For example, there has been proposed a mouthpiece that can be clenched in a central occlusal position, based on the hypothesis that if the teeth can clench in a central occlusal position, the maximum muscular strength is improved (Patent Document 1). On the other hand, based on the hypothesis that when clenching is performed, stress hormone is released at a level that may adversely affect performance, for the purpose of suppressing or preventing the completion of clenching, even between clenching upper and lower molars A mouthpiece provided with a spacer so as to create a space has also been proposed (Patent Document 2).

However, in many sports, increasing the maximum muscle strength in a specific area does not necessarily improve performance, but if factors such as agility, flexibility, speed, suppleness, and elongation are compromised, Even if maximum muscle strength increases, performance will decrease. In this regard, clenching or biting teeth may reduce agility, flexibility, speed, suppleness, elongation, etc.In order to improve sports performance, the act of clenching teeth is It can be said that it should be avoided. On the other hand, when a spacer is provided between the molars to suppress or prevent the completion of clenching as in the conventional invention, no remarkable improvement in performance has been observed as a result.

JP-A-2000-157657 Table 2011-514185

The present invention provides a mouthpiece for improving performance in sports and daily life, and a method for manufacturing the same.

In conventional mouthpieces, it was assumed that the mouthpiece clenched and clenched. On the other hand, the present inventors have found that, by biting, agility and flexibility are hindered, and thus fatigue is easily caused.Also, continuing to bite in the first place leads to fatigue, resulting in a decrease in performance. Based on the consideration that it leads to injury or failure, the present inventors have developed a mouthpiece and a method of manufacturing the mouthpiece, which are not intended to be bitten but intended to be in a neutral position of occlusion, and have completed the present invention.

More specifically, by creating a mouthpiece such that the position of the temporomandibular joint is in a relaxed position (neutral position) in conjunction with the muscles and joints of the whole body, the muscles of the whole body when using the mouthpiece are manufactured. And improve the balance of the joints, and thus the performance in sports and everyday life.

詳細 Although the details of the action mechanism of the present invention are not clear, the following may be considered. That is, the muscles, nervous system, and inter-organ network of the whole body are considered to be interlocked with each other, but if so, an unbalanced state such as occurrence of tension in some muscles and joints has occurred. In some cases, adjustments are made to achieve balance in other muscles and joints. On the other hand, when a certain muscle or joint is in the correct position (eg, neutral position), the correct position is also set in other muscles or joints (eg, , Neutral position). Therefore, by using the mouthpiece according to the present invention, the temporomandibular joint is guided to a correct position (neutral position), so that the temporomandibular joint and related muscle groups are calibrated. It is considered that the whole body is calibrated by being fed back to the network or the inter-organ network, and as a result, performance in sports and daily life is improved.

According to the mouthpiece according to the present invention, performance in sports and daily life is considered to be improved as compared with the conventional mouthpiece. For example, agility, flexibility, or suppleness can be improved. In addition, by using the mouthpiece according to the present invention, the muscles and joints of the whole body can be maintained in a relaxed state, so that, for example, during sports, the airway is secured and breathing is smooth, and it is hard to be tired. In daily life, symptoms caused by imbalanced muscle tone such as stiff shoulders and migraines are improved.

FIG. 1 is a flowchart illustrating an example of a process of manufacturing a mouthpiece according to the present invention. FIG. 2 is a diagram showing a state in which the subject is standing or standing still on a horizontal plane in the step of checking the cover state. FIG. 3 is a diagram showing a state in which the subject has warped his head and upper body backward with respect to the vertical axis with respect to the horizontal plane in the step of checking the cover state. FIG. 4 shows the posture of FIG. 3 after the step of maintaining the posture of FIG. 3 and the relaxed state without the upper and lower teeth in contact with the posture of FIG. FIG. 3 is a diagram showing a state in which the line of sight is lowered from a horizontal plane while returning the head position to the head position in FIG. FIG. 5 is a view showing a state in which the cutting tool covers the dentition to be obtained in a bucco-lingual manner (left side in FIG. 5) and a state in which the tooth row is not covered (right side in FIG. 5). FIG. 6 is a diagram showing that the lingual end of the molar of the mouthpiece is shaped like a pigeon tail of a chicken. FIG. 7 is a diagram showing a molding device used in a mouthpiece molding process and a dental model installed in the molding device. FIG. 8 shows, in the mouthpiece molding step, a step of using the cutting tool material obtained in the cutting tool acquisition step to store the position information of the resting position of the covered state confirmed in the step of confirming the covered state in the molding device. FIG.

Hereinafter, embodiments of the present invention will be described. However, the following embodiments are for helping to understand the contents of the invention, and do not limit the present invention.

<Making a mouthpiece>
The step of producing a mouthpiece in the present invention includes (i) an impression taking step, (ii) a step of checking a covered state, and (iii) a mouthpiece forming step (FIG. 1).

The (i) impression acquisition step in the present invention includes the step of acquiring information on the dentition of the subject's upper or lower jaw (dentition and perioral tissue), and the dentition based on the acquired dentition and the like. And a step of producing a model.
Any method may be used as a method for acquiring information such as the dentition, for example, a method of acquiring a dentition using an impression material and a tray, and a method of scanning the inside of the oral cavity to obtain information on the dentition. There is a method of acquiring digital data. In this step, it is desirable to obtain information on the dentition and the like up to the cheek cheek transition.
In addition, the process of producing a model of the dentition and the like based on the acquired information of the dentition and the like may be performed by using any M method. When a tooth impression was obtained by using, a plaster could be poured into the tooth impression to create a model, and digital data of information such as dentition was acquired by scanning the oral cavity and the like. In such a case, a model can be manufactured using a 3D printer or a milling machine.

In the present invention, (ii) the step of checking the state of the lid is as follows: (1) a step in which the subject stands still or standing on a horizontal plane (FIG. 2); (3) a step of relaxing the head backward 30 to 60 °, preferably 45 to 50 ° backward with respect to the vertical axis with respect to the horizontal plane (FIG. 3. The upper body may be slightly bent backward with the backward bending.), And (4) the subject relaxes while the upper and lower jaw teeth are not in contact with each other while maintaining the posture of step (3). (5) The subject returns the head position to the same head position as in the step (2) after the step (4) while maintaining the posture of the step (3) after the step (4). While lowering the line of sight from the horizontal plane by about 5 ° to 15 ° (Fig. 4 In this process, the eyes may be lowered after returning the head, or the head may be returned after the eyes are lowered, or the eyes may be lowered while lowering the head. The posture in this state with the head and eyes lowered is referred to as “resting position”, and the position of the chin in the resting position is referred to as “neutral position.”), And (6) the upper and lower jaws in the resting position of the subject The method includes a step of confirming a state of covering of the front teeth (anteria coupling). Note that the state of covering the front teeth confirmed here is the state of covering the front teeth when the position of the jaw is in the neutral position.

(Ii) In the step (1) of the step (ii) of checking the state of the cover in the present invention, when standing, it is desirable to open the foot to the width of the shoulder and stand on a horizontal plane. On the other hand, in the case of the sitting position, the angle of the knee of the subject is set to approximately 90 ° on a chair placed on a horizontal surface, and all the soles are attached, and the seat is shallow and the waist is shallow. It is desirable to apply.

In the (iii) mouthpiece molding step of the present invention, (i) the upper and lower jaw dental models obtained in the impression taking step are set to the position of the covered state confirmed in the (ii) covered state confirmation step. This is the step of molding the mouthpiece. In other words, this is a step of producing a mouthpiece with a jaw in a neutral position. In this step, the mouthpiece may be formed using any method. For example, (i) a model such as a tooth row obtained in the impression obtaining step can be installed, and the model is (ii) covered. (I) The model of the tooth row etc. obtained in the impression taking process is used for the mouthpiece material. (For example, thermoplastic resin such as ethylene vinyl acetate, polyolefin, etc.) can be combined and heated under pressure to form a mouthpiece corresponding to the dentition of the model (see FIGS. 7 and 8). The mouthpiece to be molded may cover the entire dentition, or may cover a part of the dentition (for example, only the molars).

In the case where a mouthpiece is assumed to be attached to only the upper jaw or the lower jaw only, in the (iii) mouthpiece molding step of the present invention, the lower surface or the upper surface of the mouthpiece is replaced with a tooth row to which the mouthpiece is attached. It is desirable to make the shape corresponding to the meshing with the tooth row that is paired with the gear. In addition, in order to realize such a shape, a method such as excavation or pressing a model of a tooth row facing a mouthpiece in a heat-softened state to leave an indentation can be appropriately selected. In particular, when manufacturing a device that is supposed to be attached to only the upper jaw or the lower jaw, press the dental model in the covered state in the resting position and make an indentation (see FIG. 8). The jaw of the mouthpiece wearer can easily fit in the resting position (neutral position).

バイト In the (iii) mouthpiece molding step of the present invention, the cutting tool material obtained in the cutting tool obtaining step may be used. The bite obtaining step referred to herein means a step of obtaining a bite of the subject in the resting state of the covered state confirmed in (ii) the covered state confirming step. For example, (ii) after the step (6) in the step of checking the cover state, the subject was asked to open the mouth, a bite was placed in the mouth, and then closed and returned to the resting state of the resting state, and relaxed. By waiting the hardening of the cutting tool in the state, the cutting tool can be obtained.

In the bite collecting step in the present invention, the tongue base falls down to the pharyngeal side by contacting the tongue with the anterior jig, and eventually the posture is collapsed, tension is generated, and the covered state of the resting position is affected. It is advisable to avoid the use of anterior jigs in order to prevent them from being lost. In addition, the bite is mainly acquired for the molar part, but may be the canine tooth or the entire dentition.
Further, it is desirable that the bite material covers the dentition to be acquired in a near-mesio-lingual manner (see the left side of FIG. 5). The dentition to be acquired may be the entire dentition or a part of the dentition (for example, only the molars). However, from the viewpoint of preventing the tongue root from falling into the pharyngeal side when the tongue comes into contact with the bite material of the anterior teeth, and thereby preventing the posture from collapsing and causing tension, the target dentition is the dentition (Particularly, the posterior row).

In the bite obtaining process of the present invention, if the bite of the molar part alone cannot maintain the longitudinal stability of the dental arch and there is anxiety about the reproducibility of the covered state in the resting position, the bite part of the molar part is put into position. Using the terrier guide, the anterior tooth bite may be obtained.

The bite obtaining step in the present invention may include a step of having the subject wear the bite after the bite is hardened, and confirming whether or not the jaw position is shifted. In this process, the opposing teeth contact each other when clenching because the subject does not feel discomfort left and right or back and forth, does not feel that the bite material is too high (too thick), or that the bite material is too low (too thin). Check if it is done.

The mouthpiece molding step of the present invention may include a physical condition test step (see FIG. 1). In the physical condition test process, the subject tested the flexibility test by bending forward and rotating, the balance test with one leg standing, the center of gravity track, and The difference between when the cutting tool is mounted and when it is not mounted is measured by performing a test, a center of gravity sway displacement test, and the like. The subject wears the bite bite so that the bite is attached rather than bitten. However, clenching or clenching may occur naturally when performing a heavy exercise.
In the physical condition test step, when no significant difference is observed between the wearing and the non-wearing of the cutting tool, (ii) it is desirable to start over from the step of checking the covered state or the step of obtaining the cutting tool. The physical condition test step may be performed using a hardened cutting tool, or may be performed by performing a similar test using a molded mouthpiece.

<Mouthpiece>
The mouthpiece according to the present invention is characterized in that the mouthpiece worn by the mouthpiece wearer at the time of wearing the mouthpiece has a neutral position.

マウス It is desirable that the lingual side shape of the mouthpiece manufactured according to the present invention takes into consideration the tongue position at the time of occlusion. Further, it is desirable that the mouthpiece has a shape that does not contact the back of the mouth or the pharynx. Specifically, it is desirable to have a shape and thickness that do not unnecessarily contact the tongue, and it is desirable that the lingual end of the molar is in a dovetail shape (see the left side of FIG. 6). If the lingual end of the molar tooth is covered with a mouthpiece like a conventional mouthpiece, vomiting reaction occurs when using it by touching the back of the mouth or the tongue during use, causing the tongue to recede or recede, The patient may fall into the pharynx, resulting in a decrease in the airway and difficulty breathing, and a loss of posture, leading to poor performance. On the other hand, such a phenomenon can be prevented by taking the tongue position into consideration, for example, by making the lingual end of the posterior part into a dovetail shape, taking the tongue position into consideration.

Hereinafter, Examples and Comparative Examples of the present invention will be described. However, the following examples and comparative examples are for helping understanding of the contents of the invention, and do not limit the invention.

<Making a mouthpiece>
(Example 1)
1) Impression Taking Step The molds of the upper and lower dentitions (including the cheek-to-cheek transition part) of the subject were obtained using an impression material and a tray, respectively. After that, a commercially available plaster is poured into the acquired tooth impression to create a model

2) Step of Checking Covered State The subject, who was barefoot, was allowed to stand on a horizontal surface with his / her feet wide about the width of the shoulder and kept still, and the subject's upper and lower jaw teeth were not in contact. Thereafter, the subject was warped backward by about 45 ° with respect to the vertical axis with respect to the horizontal plane while maintaining that state, and while maintaining that posture, the upper jaw and lower jaw were weakened without contact with each other. I let it. Further, the subject was kept in that state for 25 seconds, after which the head position was returned to the vertical position, and the line of sight was lowered by about 10 ° from the horizontal plane (resting position). While maintaining the resting position, the subject confirmed the state of covering of the upper teeth (anterior coupling) of the upper and lower jaws.

3) Mouthpiece forming step 2) After the step, the subject is opened while maintaining the resting position, a bite material (FP bite, manufactured by Feed Co., Ltd.) is put in the mouth, and the resting position confirmed in the step 2) The upper and lower jaws were closed so that the anterior teeth were covered (Anteria coupling), and the cutting of the bite material was awaited. The bite of the maxillary dentition was obtained. The bites were collected on the upper and lower jaw molars and canines, and the bite was collected so that the bite covered the dentition buccally and mesio-centrifugally.

1) Using the dental model obtained in the impression acquisition step, using the hardened cutting tool material obtained in the cutting tool acquisition step, 2) Reproducing the cover state in the resting position confirmed in the cover state confirmation step. The state was recorded on a molding machine (FIGS. 7 and 8). After that, using the mouthpiece sheet (ethylene vinyl acetate sheet, manufactured by Yamahachi Tekko Kogyo Co., Ltd.) as a material, pressing and heating using a molding machine and a dentition model, the mouthpiece for the upper dentition was obtained. Molded. Further, before the molded mouthpiece is hardened, an indentation is formed on the surface opposite to the mouthpiece mounting surface by pressing the model of the lower dentition, which is the opposing dentition, in the positional relationship of the cover at rest. I attached.

A flexibility test to measure flexibility in forward bending and rotation and a balance test in a standing state were performed for each of the subjects with and without the mouthpiece, with both the flexibility test and the balance test. , The performance with the mouthpiece attached was higher.

<Running test>
(Example 2)
1) Preparation of Mouthpieces Mouthpieces for runners 1 and 2 as test subjects were prepared in the same manner as in Example 1 1) Impression obtaining step, 2) Cover state checking step, and 3) Mouthpiece molding After the process, each was created.

2) Running test The runners 1 and 2 wearing the mouthpiece of Example 2 were allowed to stand still at a starting position in a standing state at the starting point. Next, the runner 1 and the runner 2 were allowed to run about 30 m with full power together with a start signal, and travel data of a section (referred to as “target section”) between 20 m from the start point was obtained. In addition, the runner was equipped with a GPS measurement device (OptEye S5 manufactured by Catapult), and the running data was acquired. Here, the average speed (m / min) in the target section and the maximum speed (m / sec) in the target section were acquired as the traveling data.

(Comparative Example 1)
A running test similar to that of Example 2 was performed on the runners 1 and 2 without the mouthpiece, and running data was acquired.

走行 The running data obtained in Example 2 and Comparative Example 1 were as shown in Table 1. With respect to runner 1, the average speed is improved by 18.6 (m / min) when the mouthpiece is worn (Example 2) compared to when it is not worn (Comparative Example 1), and the maximum speed is 0.2 (m / sec). ) Improved. For Runner 2, the average speed was improved by 17.7 (m / min) and the maximum speed was 0.3 (m) when the mouthpiece was worn (Example 2) compared to when it was not worn (Comparative Example 1). / Sec) improved.

Claims

(4) A method for producing a mouthpiece, the method comprising a step of obtaining an impression, a step of confirming a cover state, and a step of molding a mouthpiece.
2. The method for producing a mouthpiece according to claim 1, wherein the step of obtaining the impression includes a step of acquiring information on a dental row or the like of the subject's upper or lower jaw (a dental row and a tissue around the oral cavity), and the captured dental row. A method for producing a mouthpiece, comprising a step of producing a model such as a tooth row based on information on the mouthpiece and the like.
3. The method of manufacturing the mouthpiece according to claim 1, wherein the step of confirming the lid state includes: (1) a step in which the subject stands still or standing on a horizontal surface;
(2) a process in which the subject rests and relaxes without the upper and lower teeth in contact with each other;
(3) a step in which the subject turns the head backward 30-60 °, preferably 45-50 ° backward with respect to the vertical axis with respect to the horizontal plane;
(4) a step in which the subject maintains a relaxed state for 15 to 30 seconds in a state where the upper and lower jaw teeth are not in contact with each other while maintaining the posture of step (3);
(5) After the step (4), the subject returns the head position to the same position as in the step (2) while maintaining the posture of the step (3), and changes his / her eyes from a horizontal plane by about 5 ° to 15 °. ° drop downward,
And (6) a method for producing a mouthpiece, comprising a step of confirming a state of covering of anterior teeth of the upper and lower jaws in a resting position of the subject (anterior coupling).
(4) The method for producing a mouthpiece according to any one of (1) to (3), wherein a cutting tool is used in the mouthpiece molding step.
(4) A mouthpiece characterized in that the jaw position in a weakened state of the mouthpiece wearer when the mouthpiece is worn is in a neutral position.
The mouthpiece according to claim 5, wherein the lingual end of the molar portion has a dovetail shape.