JPH0793932B2 - Denture processing material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a denture working material used for working a denture base, bar, clasp and the like.

[0002]

2. Description of the Related Art Processed materials used for denture bases, bars, clasps, etc. are (a) easy to mold and process (b) not to deteriorate the appearance (c) have high strength ( d) Low expansion and contraction is required.

In response to the above requirements, PM is now used as a floor material.
Resins (synthetic resin materials) such as MA (polymethacrylic acid) and special alloys such as gold alloys and chrome alloys are used, and it is usually used as a processing material for connectors such as bars and maintenance devices such as clasps. Special alloy is used.

Although the resin satisfies the requirements in points (a) and (b) above, it does not satisfy the points (c) and (d), and cannot be used as a working material for a connector or a retainer. It was

Further, the processed material of the special alloy satisfies the requirements in the above points (c) and (d), but it remains a problem in the points (a) and (b), and the structure is complicated and expensive. There is also a problem that an expensive casting device is required.

As a measure for improving the above, there is a denture processing material in which a prepreg (semi-cured synthetic material) is reinforced with glass fiber or the like.

Since this denture working material has a composite structure of glass fiber and resin, it has greater strength and rigidity than conventional resins, and therefore it is possible to process and mold thinner floors, paratalbars, etc., and to make it feel uncomfortable when mounted. Can have fewer dentures.

However, since the prepreg used for the processed material for artificial teeth undergoes photosensitive polymerization, it has to be packaged with a light-shielding protective film and needs to be stored in a cool and dark place.

[0009]

The problem to be solved by the present invention is that the conventional denture processed material reinforced by glass fiber must be stored in a cool and dark place, and also needs a light-shielding package. Is to

[0010]

In order to solve the above-mentioned problems, the processed material for denture of the present invention has a structure in which resin powder is pressed against glass fiber or glass fiber woven fabric.

[0011]

The powder resin in which the powder resin is pressed against the glass fibers does not polymerize even if it is stored at room temperature without being shielded from light. Therefore, the processed material for dentures of the present invention is easy to store and manage the processed material while maintaining the advantages that the prepreg reinforced with the conventional glass fiber is easy to mold and process and has great strength and rigidity. It can be carried out.

[0012]

Embodiments of the present invention will be described in detail below with reference to FIGS.

FIG. 1 shows a sheet 1 for a denture processed material 1.
This sheet-shaped artificial tooth processing material 1 is a structure in which a resin layer 3 obtained by heating and pressing resin powder onto a glass fiber woven fabric 2 is formed into a sheet shape and laminated, and the front and back surfaces are covered with a protective film 6. It is as

FIG. 2 is an enlarged cross-sectional view of the glass fiber woven fabric 2, in which the resin powder 4 surrounds the glass fiber yarn 5,
Pressed in a tightly enclosed condition.

The resin layer 3 does not polymerize even if it is stored without being shielded from light. Therefore, the protective film 4 may be transparent.

At the time of use, the sheet-shaped denture workpiece 1 is cut into an appropriate shape, the protective film 6 is peeled off, and the resin layer 3 is swollen by immersing it in a monomer solution.

Next, the swelled sheet-shaped denture workpiece 1 is pressed against the gypsum model 17 or filled in a mold and cured by heating or photopolymerization.

FIG. 3 shows an example in which the sheet-shaped denture workpiece 1 is used as the floor 7 of the maxillary complete denture 15, and FIG. 4 is an example in which it is used as the paratalbar 10 of the lower jaw partial denture 16.

Reference numeral 13 is a natural tooth, reference numeral 14 is an artificial tooth, and reference numeral 11 is a clasp.

FIG. 4 shows a rod-shaped denture workpiece 7, which is formed by forming a resin layer 3a by heat-pressing resin powder onto a glass fiber bundle 8 and forming a glass fiber around it. The cloth is wound on the woven fabric 2, the resin powder is heated and pressed to form the resin layer 3b, and the surface is covered with the protective film 6.

FIG. 6 is an enlarged cross-sectional view of the glass fiber bundle 8. The resin powder 4 is pressed against the glass fiber yarn 5 in a state of closely surrounding it. Molding of this rod-shaped denture processed material 7,
The processing method is the same as that of the sheet-shaped artificial tooth processing material 1 described above.

FIG. 7 shows an example in which the bar-shaped artificial tooth working material 7 is used as the lingual bar 12 of the lower jaw partial denture 16.

When using the bar-shaped artificial tooth processing material 7 for a portion such as a bar or a clasp that requires particularly high rigidity,
A hybrid structure using carbon fibers may be used.

[0024]

EFFECTS OF THE INVENTION The processed material for dentures of the present invention, which is pressed against resin powder, makes it easy to store and manage the processed material while taking advantage of the advantages of the conventional processed material for dentures in which glass fiber and prepreg are compounded. I was able to do it.

Further, since the protective film does not need to be light-shielding, it is easier to transport and store, and if a transparent protective film is used, the color tone of the processed material can be confirmed while being packaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a sheet-shaped processed material for artificial teeth.

FIG. 2 is a cross-sectional view showing an enlarged part of the glass fiber woven fabric.

FIG. 3 is a plan view showing an upper denture.

FIG. 4 is a plan view showing a lower jaw partial denture.

FIG. 5 is a perspective view showing a structure of a bar-shaped artificial tooth processing material.

FIG. 6 is an enlarged cross-sectional view showing a part of a glass fiber bundle.

FIG. 7 is a plan view showing a lower jaw partial denture.

[Explanation of symbols]

1 Sheet Denture Processing Material 2 Glass Fiber Fabric 3 Resin Layer 3a, 3b Resin Layer 4 Resin Powder 5 Glass Fiber Yarn 6 Protective Film 7 Rod Denture Processing Material 8 Glass Fiber Bundle 9 Floor 10 Paratalver 11 Clasp 12 Lingal Bar 13 Natural tooth 14 Artificial tooth 15 Upper complete denture 16 Lower jaw local denture 17 Gypsum model

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location A61K 6/00 D 9051-4C 6/08 H 9051-4C

Claims (2)

[Claims] 1. A processed material for denture, which is obtained by pressing resin powder onto glass fibers. 2. A processed material for denture, which is obtained by pressing resin powder onto a glass fiber woven fabric.