JPH0357790B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention is used for sports, especially boxing, to protect teeth, cheeks, mouth, temporomandibular joints, etc. from blows, or for medical purposes, to protect teeth from tooth grinding. The present invention relates to a mouthpiece prototype body for manufacturing mouthpieces used for etc.

BACKGROUND OF THE INVENTION Traditionally, boxing mouthpieces have been manufactured individually by dentists to fit the user's dentition, or in bulk from rubber-like elastic material to fit standard dentition. There is.

Problems to be Solved by the Invention However, since the former method is expensive, it is hardly used. On the other hand, the latter method is inexpensive, but cannot be adapted to the entire user's dentition.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a mouthpiece prototype that can be manufactured easily and inexpensively to suit the dentition of each user.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems is to provide a rubber-like elastic material with a size that can fit gently into the upper jaw teeth of a standard dentition. The occlusal part, the outer wall and the inner wall are integrally provided, and the occlusal part,
The inner surfaces of the outer and inner walls are formed into rough surfaces.

Effects The effects of the above technical means are as follows.
That is, a gap layer made of a paste-like rubber-like elastic material that hardens at room temperature is applied to the mouthpiece prototype body, the mouthpiece prototype body with this gap layer formed thereon is placed over the maxillary teeth, and the gap layer and the mouthpiece are bonded together. A mouse that adapts to the user's own dentition by occlusating the upper and lower teeth with the piece prototype interposed, making the gap layer conform to the shape of the upper teeth, and after fitting, hardening the gap layer. Pieces can be obtained easily and inexpensively. At this time, since the inner surface of the mouthpiece original body is formed into a rough surface, the gap layer can be firmly held by mechanical fitting force, and durability can be obtained.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 4, the mouthpiece prototype body 1 is made of a rubber-like elastic material, such as silicone rubber, which is odorless, harmless, and has an appropriate hardness as a mouthpiece. An outer wall 3 and an inner wall 4 are integrally provided on each side, and the whole is formed into a horseshoe shape. Cutouts 5 and 6 are formed in the center and upper portions of both sides of the outer wall 3 to avoid the upper labial frenulum, respectively.
The anterior tooth side occlusal part 2a in the above occlusal part 2 is formed to be approximately twice as thick as the molar side occlusal part 2b, and is adapted to the gap between the anterior tooth side and the molar side when occluding the upper and lower teeth. I'm starting to do that. In this way, the thickness of the anterior tooth side occlusal part 2 is greater than the thickness of the molar side occlusal part 2b.
It is formed so that the thickness of a is approximately twice,
On the other hand, since the occlusal force on the anterior tooth side is about 1/4 of the occlusal force on the molar side, the molar side occlusal part 2b is made of silicone rubber that is harder than the other occlusal parts. The inner surfaces of the occlusal part 2, the outer wall 3, and the inner wall 4 of the mouthpiece prototype body 1 are formed into rough surfaces consisting of a large number of fine irregularities. The mouthpiece prototype body 1 has a slightly larger inner cavity so that it can fit loosely into the upper jaw teeth of a standard dentition.

To form this mouthpiece prototype body 1, heat-curable silicone rubber is used. This heat-curable silicone rubber is a highly polymerized organopolysiloxane (generally referred to as silicone polymer, silicone raw rubber, or silicone gum, and is in the form of a putty).
is the main raw material, and contains reinforcing fillers such as synthetic silica, extender fillers such as crushed silica, plasticizers such as organopolysiloxane with relatively low molecular weight, vulcanizing agents (crosslinking agents) such as benzoyl peroxide, etc. Use the kneaded one. This heat-curable silicone rubber is molded using a mold. During this molding, the inner surface of the mouthpiece prototype body 1 can be easily formed into a rough surface by forming the surface of the mold into a rough surface consisting of many irregularities. Also, during this molding, silicone rubber with high hardness is mixed in the molar tooth side occlusal part 2b. At this time, it is desirable that the outer surface of the occlusal part 2 be formed into a relatively smooth surface so that the cusps of the mandibular teeth do not dig into it.

As an example, the molar side occlusal part 2b of the mouthpiece prototype body 1 is made of rubber with a hardness of about 60, and the other parts are made of rubber with a hardness of about 50.

In order to manufacture a mouthpiece that matches the user's own dentition using this mouthpiece prototype body 1,
First, as shown in FIGS. 5 to 7, a relatively thin paste-like silicone rubber that hardens at room temperature is applied to the inner surface of the mouthpiece prototype body 1 to form a gap layer 7 for fitting the upper jaw teeth. This paste-like, room-temperature-curing silicone rubber is a two-component type (for example, SE6721 manufactured by Toray Silicone Co., Ltd.)
Use. The basic composition of this two-component type silicone rubber is a base polymer (generally a diorganopolysiloxane with a functional group at the end), a crosslinking agent (a three-dimensional polymer that connects the base oils, and crosslinks them to form a three-dimensional rubber elastic body). silane or siloxane), a curing catalyst for reacting the above base polymer and crosslinking material, filler (for reinforcement,
(for increasing the amount), etc. In this two-component type silicone rubber, the above components are basically divided into a main component (base) and a curing agent (catalyst) based on the following combinations of essential components.

Main agent: Base polymer, crosslinking agent Curing agent: Curing catalyst (most of condensation type) Main agent: Base polymer Curing agent: Crosslinking agent, curing catalyst (part of condensation type) Main agent: Base polymer, curing catalyst Curing agent: Crosslinking agent (Additional type) By storing the base resin and the curing agent separately in this way, storage stability can be improved and silicone rubber can be easily processed as needed.

By mixing the two liquids of the base agent and the curing agent, a paste is formed, and this can be applied to the inner surface of the mouthpiece prototype body 1 as described above to easily form the gap layer 7. .

Next, the mouthpiece original body 1 with the interstitial layer 7 formed thereon
is placed over the maxillary teeth, and the maxillary teeth and the mandibular teeth are interposed with the gap layer 7 and the mouthpiece original body 1 interposed, thereby deforming the gap layer 7 as shown in FIG. 8 to create the shape of the maxillary teeth. Adapt to. Thereafter, the mouthpiece original body 1 and the gap layer 7 are separated from the maxillary teeth, and the gap layer 7 is hardened by a condensation reaction or an addition reaction, thereby forming a mouthpiece suitable for the maxillary teeth. This curing proceeds at room temperature, but the curing speed can be increased by increasing the temperature. If the above-mentioned two-component type silicone rubber is used, it is a so-called deep-curing type, and the curing reaction can proceed over the entire area.

At this time, even if the interstitial layer 7 made of paste-like silicone rubber is applied to the cured silicone rubber, the chemical adhesion of the interstitial layer 7 to the silicone rubber is poor or nonexistent; By forming the inner surface of the mouthpiece original body 1 into a rough surface, the gap layer 7 is formed on this rough surface.
can be firmly held by mechanical fitting force, preventing peeling and improving durability. In addition, by applying a surface treatment agent (primer) consisting of a coating film forming agent, a silane coupling agent, a solvent, a catalyst, etc. to the inner surface of the mouthpiece prototype body 1, the interstitial layer 7 is strengthened on the mouthpiece prototype body 1. can be held. And this gap layer 7
As an example, a rubber hardness of about 50 is used.

The mouthpiece thus formed is used by fitting into the upper jaw teeth. At this time, as mentioned above, the hardness of the anterior tooth side occlusal part 2a is changed to the molar side occlusal part 2b.
If the hardness is set smaller than the hardness of Distributes physiological occlusal force to
It can protect the temporomandibular joint.

Note that the rubber-like elastic material used for molding the mouthpiece prototype body 1 is not limited to silicone rubber, and in addition, thermoplastic resins or thermosetting resins can be used. Furthermore, the anterior tooth side occlusal portion 2a and the molar side occlusal portion 2b of the mouthpiece prototype body 1 may be formed to have substantially uniform wall thicknesses. It is sufficient to apply the coating thicker than the gap layer 7 of the occlusal part 2b, so that the occlusal part on the anterior tooth side is approximately twice as thick as the occlusal part on the molar side as a whole. Further, the outer surface of the mouthpiece original body 1 may be formed to have a rough surface similarly to the inner surface.

Effects of the Invention As is clear from the above description, according to the present invention, the occlusal part, the outer wall, and the inner wall are made of a size that can fit gently into the upper jaw teeth of a standard dentition using a rubber-like elastic material. The occlusal portion, the outer wall, and the inner wall are formed into rough surfaces. Therefore, using this mouthpiece prototype, a paste-like rubber-like elastic material is applied to its inner surface to form a gap layer, and this gap layer is hardened after being adapted to the shape of the user's own upper jaw teeth. As a result, a mouthpiece that fits the user's own maxillary teeth can be manufactured easily and at low cost.

[Brief explanation of drawings]

1 to 4 show an embodiment of the mouthpiece prototype body of the present invention, FIG. 1 is a perspective view of the mouthpiece prototype body, FIG. 2 is a sectional view taken along the - arrow in FIG. The figure is a sectional view taken along the - arrow in Fig. 1, Fig. 4 is a sectional view taken along the - arrow in Fig. 1, and Figs. , Figures 5 to 7 show the state in which the interstitial layer has been applied to the inner surface of the mouthpiece original body, and sectional views similar to Figures 2, 3, and 4, respectively, and Figure 8 show the state in which the finished product has been manufactured. FIG. 7 is a cross-sectional view similar to FIG. 7, showing the mouthpiece. 1... Mouthpiece original body, 2... Occlusal part, 2
a... Anterior tooth side occlusal part, 2b... Molar side occlusal part, 3... Outer wall, 4... Inner wall, 7... Complementary layer.

Claims (1)

[Scope of Claims] 1. An occlusal part, an outer wall, and an inner wall are integrally provided with a size that can fit gently into the upper jaw teeth of a standard dentition using a rubber-like elastic material, and these occlusal part, outer wall A mouthpiece prototype body characterized in that the inner surfaces of the walls and inner walls are formed into rough surfaces. 2. The mouthpiece prototype body according to claim 1, wherein the occlusal part is formed so that the wall thickness on the front tooth side is approximately twice the wall thickness on the molar side. 3. The mouthpiece prototype body according to claim 2, wherein the occlusal part is formed such that the hardness on the front tooth side is smaller than the hardness on the molar side. 4. The mouthpiece prototype body according to any one of claims 1 to 3, wherein the rubber-like elastic material is silicone rubber.