JPH07178120A - Self-adhesive sheet for fixing prosthetic appliance - Google Patents

Abstract

PURPOSE:To make it possible to keep a prosthetic appliance fixed firmly and for a long time in the adhesive sheet for fixing denture or other prosthetic appliance, by dotting water-soluble adhesive mucous membranes on one of the faces of non-water-soluble self-adhesive sheet. CONSTITUTION:The self-adhesive sheet for fixing a prosthetic appliance is formed as non-water-soluble self-adhesive sheet 1, by kneading e.g. 30g styrene- isoprene-styrene block copolymer and 70g acrylic adhesive well and giving heat and pressure thereto to obtain a sheet form. After sticking tablet-shaped water-soluble adhesive mucous membranes 2 made of e.g. polyacrylic acid soda on one of the faces of this sheet 1 at the specified intervals, pressure is given to obtain self-adhesive sheet for fixing a prosthetic appliance. The adhesive sheet 3 is cut, for example, to the shape of denture 4 for the upper jaw and stuck on the denture 4 at its face 5 of non-water-soluble adhesive, and the adhesive mucous membranes 2 are applied against the fixing parts of the palate, alveolus, etc., and attached in a meshing manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive sheet for fixing a denture or other prosthesis.

[0002]

2. Description of the Related Art Conventionally, when fixing dentures such as dentures to an alveolar part, etc., a paste-like material of a water-soluble polymer or such a water-soluble polymer is used to ensure fixation. It is known to interpose an interlining material such as a non-woven fabric between the denture and the alveolar part. However, although they adhere well to mucous membranes such as the alveolar part, they may easily come off the denture, and it is difficult for them to be used for a long time because they are melted by saliva in the mouth, etc. It may cause discomfort.

[0003]

Therefore, it is positioned between a prosthesis such as a denture and an adherend such as a mucous membrane such as an alveolar part so that they both adhere well to each other and can be reliably fixed, and also water-soluble. It is intended to enable the mucoadhesive to be used for a long time while preventing the mucoadhesive from being dissolved by saliva or the like.

[0004]

According to the present invention, a sheet of a water-insoluble adhesive is provided, and a water-soluble mucoadhesive agent is scattered on one surface of the sheet at appropriate intervals. By directing the mucoadhesive to the mucous membrane side such as the alveolar part and interposing the water-insoluble adhesive toward the prosthesis, it is possible to secure the prosthesis securely and for a long time. It is something to do.

The non-water-soluble adhesives include natural rubber-based, acrylic rubber-based, acrylic-based, styrene-isoprene-styrene block copolymer-based, ethylene-vinyl acetate copolymer-based, polyisobutylene-based, silicone-based and other non-water-based adhesives. Water-soluble substances can be used alone or in an appropriate mixture.

As the water-soluble mucoadhesive agent, sodium polyacrylate, polyacrylic acid, carboxyvinyl polymer, sodium carboxymethylcellulose, polyvinyl alcohol and other water-soluble polymers are used.

The above water-insoluble pressure-sensitive adhesive is molded into a sheet by heating and pressurizing it, or is molded into a sheet by a casting method, a calendar method or the like. The thickness of this adhesive sheet should be about 0.2 to 4 mm,
Preferably, it should be about 0.4 to 1.5 mm.

The water-soluble mucoadhesive has a diameter of about 1
~ 20 mm, preferably about 5-10 mm, and formed into a tablet with a thickness of about 0.1-2 mm, preferably about 0.3-0.7 mm, or a diameter of about 0.2. It is formed into a granular shape of about 1 mm, preferably about 0.3 to 0.7 mm, or formed into an appropriate shape according to the prosthesis and the fixing portion.

The above-mentioned tablet-shaped product has a thickness of about 0.5-2 cm.
The water-insoluble pressure-sensitive adhesive sheet should be placed at an appropriate interval.
Put it on one side of the gut and glue it. In the case of a granular material, the water-insoluble pressure-sensitive adhesive sheet is similarly sprinkled and adhered on one surface. The above water-soluble mucoadhesive is replaced with a water-insoluble adhesive
When the water-soluble mucoadhesive is partially pressed into the water-insoluble adhesive sheet after being adhered onto the sheet, the state of adhesion between the two can be further stabilized.

The non-water-soluble pressure-sensitive adhesive sheet is impregnated into a core material made of a stretchable cloth, a non-woven fabric, a flexible plastic film or a foamed product thereof, or a composite material thereof, to obtain a non-water-soluble pressure-sensitive adhesive sheet. Can also be formed. Further, a non-water-soluble pressure-sensitive adhesive sheet is applied by coating a non-water-soluble pressure-sensitive adhesive on both sides of the core material or by applying a sheet-shaped non-water-soluble pressure-sensitive adhesive according to the above on both sides of the core material. The presence of such a core material makes the whole strong and increases the cushioning property. In this case, if the thickness of the non-water-soluble pressure-sensitive adhesive on the side where the water-soluble mucoadhesive is scattered with the core material as the boundary is made thicker, the mounting state described later may be improved, which is more preferable.

The adhesive sheet for fixing the prosthesis is formed in a shape suitable for the prosthesis to be fixed such as a denture or in an appropriate general shape. The general-purpose shape is cut as it is, the general-purpose shape is cut into an appropriate size to fit the prosthesis, and the water-insoluble adhesive side is attached to the prosthesis. The side is applied to a fixed part in the mouth such as the alveolar part, and pressure is applied so that the teeth are engaged with each other. By doing so, the water-insoluble adhesive firmly adheres to the prosthesis, the water-soluble mucoadhesive agent surely adheres to the mucous membrane of the fixation site, and the above water pressure deforms the water-insoluble adhesive to make it water-soluble. Since it will completely cover the periphery of the mucoadhesive, this water-soluble mucoadhesive will not come into direct contact with saliva, etc., and it will not melt out, and it will be possible to wear it for a long time. About 5-6
Although it took a long time, continuous wearing for about 1 to 3 days is also possible.

Also, since the mucous membrane at the fixing site is partially adhered to the mucous membrane by the water-soluble mucoadhesives scattered, the restraint on the mucous membrane is less and the burden is lighter, and it is comfortable to wear for a long time. It can be used, and it does not cause pain due to the cushioning effect of the water-insoluble adhesive layer, and can be sufficiently adapted to atrophy of the alveolar part and the like. This adhesive sheet for fixing a prosthesis is formed in advance into a tape shape, a square shape, a triangular shape, a circular shape, an elliptical shape, a polygonal shape, or any other suitable shape according to the type and fixing portion of the prosthesis. It is convenient to keep it.

[0013]

【Example】

(Example 1) 30 g of styrene-isoprene-styrene block copolymer and 70 g of an acrylic adhesive were well kneaded, and this was molded into a sheet having a thickness of about 0.8 mm by heating and pressurizing to be water-insoluble. An adhesive sheet 1 was obtained. A water-soluble mucoadhesive 2 in the form of tablets of polyacrylic acid soda having a diameter of 5 mm and a thickness of 0.7 mm is adhered to one surface of the non-water-soluble adhesive sheet 1 at an interval of 1 cm. A slight pressure was applied from above to obtain an adhesive sheet 3 for fixing a prosthesis (FIGS. 1 and 2).

This is cut in conformity with the form of the denture 4 for the upper jaw and adhered to the denture 4 with the surface 5 of the water-insoluble adhesive.
The water-soluble mucoadhesive 2 was attached toward the fixed parts such as the palate and the alveolar part, and they could be fitted tightly (Fig. 3). It was able to be worn for two days, during which the denture did not wobble, no pain was felt, and the feeling of use was good. Observation after removing this revealed that the periphery of the water-soluble mucoadhesive attached to the fixing site 6 was completely covered with the water-insoluble adhesive (FIG. 4).

Example 2 30 g of an ethylene-vinyl acetate copolymer was well kneaded with 70 g of an acrylic pressure-sensitive adhesive, and heated and pressed to form a sheet having a thickness of 0.9 mm. Adhesive sheet 10 was used. On one side of this sheet, 20 g of granular water-soluble mucoadhesive agent 20 of carboxyvinyl polymer having an average diameter of 0.4 mm was sprayed, and pressure was applied appropriately so that it would not fall off, and an adhesive sheet for fixing the prosthesis. 30 was obtained (FIGS. 5 and 6). Cut this adhesive sheet into tape 3
1. Then, this was adhered to the U-shaped groove 8 of the denture 7 for the lower jaw in the same manner as above, and when it was installed in the mouth, the wearing state could be maintained for two and a half days, and the usability was good. It was Further, when observed after removing this, the periphery of the water-soluble mucoadhesive attached to the fixing portion 9 was completely covered with the water-insoluble adhesive as in Example 1 (FIG. 7, (Figure 8).

(Example 3) Natural rubber (Moon value 50)
40 g of synthetic tackifying resin, Alcon P-100 (product name of Arakawa Chemical Co., Ltd.) 30 g, polyisobutylene (Vistanex LMMH, product name of Exxon Chemical Co., Ltd.)
20 g and 10 g of polybutene (HV-300, product name of Nisseki Chemical Co., Ltd.) are kneaded and the thickness is adjusted by a calendar method.
A 0.8 mm water-insoluble adhesive sheet was obtained. 20 g of the carboxyvinyl polymer granules of Example 2 above was sprinkled on this and slightly pressed, and this was cut into an oval shape with a major axis of 2 cm and a minor axis of 1 cm to obtain an adhesive sheet for fixing a prosthesis ( (Not shown). Several pieces of this were adhered to the prosthesis in the same manner as above and mounted in the mouth, and they were successfully used.

[0017]

As described above, according to the present invention, a non-water-soluble adhesive is placed on the side of the prosthesis, and a water-soluble mucoadhesive is placed on the side of the fixed part such as the alveolar part, so that the state of attachment is ensured In addition, the water-soluble mucoadhesive can be completely covered with a non-water-soluble adhesive at the time of application, and the prosthesis can be attached for a long time. Further, this adhesive sheet can be widely used for various artificial prostheses such as dentures.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view in which the thickness of FIG. 1 is enlarged.

FIG. 3 is an explanatory diagram showing a usage state of FIG. 1.

FIG. 4 is an explanatory view showing a state of being removed after use in FIG.

FIG. 5 is a plan view showing another embodiment.

FIG. 6 is an end view in which the thickness of FIG. 5 is enlarged.

FIG. 7 is an explanatory diagram showing a usage state of FIG.

FIG. 8 is an explanatory diagram showing a state of being removed after use in FIG. 5;

[Explanation of symbols]

 1, 10 Water-insoluble adhesive sheet 2, 20 Water-soluble mucoadhesive 3, 30 Adhesive sheet for fixing prosthesis 4, 7 Denture 6, 9 Fixed part

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takayuki 圷 2-4, 9-2 Minami, Chiyoda-ku, Tokyo Nichiban Co., Ltd. (72) Inventor Tetsuaki Matsuda 2-4-2, 9dan, Chiyoda-ku, Tokyo Nichiban Co., Ltd. (72) Inventor Shuntaro Taguchi 2-4, 9dan Minami, Chiyoda-ku, Tokyo Nichiban Co., Ltd. (72) Masanori Yamamoto 2-4, 9dan Minami, Chiyoda-ku, Tokyo Inside Chiban Co., Ltd.

Claims (2)

[Claims] 1. A pressure-sensitive adhesive sheet for fixing a prosthesis, comprising a sheet of a water-insoluble adhesive, and a water-soluble mucoadhesive agent scattered on one surface of the sheet of the water-insoluble adhesive. 2. The adhesive sheet for fixing a prosthesis according to claim 1, wherein the sheet of the non-water-soluble adhesive has a stretchable cloth or other core material in the middle portion.