JPH0912419A - Denture stabilizer - Google Patents

Abstract

PURPOSE: To obtain a denture stabilizer excellent in easiness to take out the denture from a container, simplicity to coat on a denture base and readiness to peel from the denture base by blending a specific gel-like material to a base material comprising vinyl acetate resin. CONSTITUTION: A gel-like material obtained by mixing a polyolefin with at least one compound selected from a mineral oil, squalane, polybutene and absolute lanolin is blended with this pasty denture stabilizer comprising vinyl acetate resin as a base material. It is preferable to blend 30-80wt.% vinyl acetate resin and 5-50wt.% gel-like material. As the polyolefin, especially polyethylene is preferable. As the mineral oil, fluid paraffin, Vaseline (R), etc., can be cited.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a denture stabilizer used for fixing dentures. More specifically, the present invention relates to a denture stabilizer which is excellent in ease of removal from a container, application to a denture base, and easy peeling from a denture base.

[0002]

2. Description of the Related Art Denture stabilizers are used as supplements to gums due to chronological factors when using complete dentures or partial dentures. At present, denture stabilizers using powder, non-aqueous paste or synthetic resin are used. Among them, denture stabilizers using synthetic resins are widely used because of their excellent feel and functionality. However, even such a denture stabilizer has drawbacks that it is difficult to take it out of the container at low temperature, the coating property to the denture base is poor, and the peelability from the denture base after use is poor. In order to improve these drawbacks, a vinyl acetate resin having a high degree of polymerization is blended (Japanese Patent Publication No. 60-21123, Japanese Patent Publication No. 64-9018), and a water-soluble polymer is blended (Japanese Patent Laid-Open Publication No. Hei. Japanese Patent No. 65210) has been proposed, but its effect is still insufficient.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a denture stabilizer which is easy to take out from a container, has good coatability on the denture base, and has good releasability from the denture base.

[0004]

Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that a paste-like denture stabilizer based on vinyl acetate resin, and a polyolefin containing mineral oil, Mixing with at least one selected from squalane, polybutene and anhydrous lanolin, and mixing the gel-like substance obtained by dissolution, it is easy to take out from the container, good applicability to the denture base, and excellent releasability from the denture base. It was found that a denture stabilizer was obtained, and the present invention was completed. Therefore, the present invention is a paste-like denture stabilizer based on vinyl acetate resin, wherein a gel-like substance obtained by mixing and dissolving polyolefin with at least one selected from mineral oil, squalane, polybutene and anhydrous lanolin is It is a denture stabilizer characterized by being compounded.

As the vinyl acetate resin used in the present invention, those conventionally used for denture stabilizers can be used. Generally, they are classified as low degree of polymerization vinyl acetate resin, medium degree of polymerization vinyl acetate resin, high degree of polymerization vinyl acetate resin, and used alone or in combination of these vinyl acetate resins having different degrees of polymerization as appropriate. You can The blending amount of the vinyl acetate resin in the denture stabilizer of the present invention may be a commonly used blending amount, and is appropriately 30 to 80% by weight based on the total weight of the denture stabilizer, and further 40 to 70%. Weight percent is preferred. If it exceeds 80% by weight, the ease of ejection from the container and the coatability on the denture base will decrease, and if it is less than 30% by weight, the cushioning effect will decrease.
It cannot be used as a denture stabilizer.

The pasty denture stabilizer of the present invention further comprises
It includes a gel-like substance obtained by mixing and dissolving a polyolefin with at least one selected from mineral oil, squalane, polybutene and anhydrous lanolin. This gel-like substance usually has a viscosity of 10 to 10 million cps at room temperature. Hereinafter, this substance is referred to as a gel substance in the present specification. Examples of the polyolefin that is a component of the gel-like substance include polyethylene and polypropylene, and polyethylene is particularly preferable. As a component to be mixed with such a polyolefin, mineral oil can be mentioned first, and examples thereof include liquid paraffin and vaseline.

A gel-like substance can be obtained by adding a polyolefin to at least one selected from mineral oil, squalane, polybutene and anhydrous lanolin, mixing them and heating and dissolving them. The addition amount of the polyolefin is appropriately 0.1 to 10.0% by weight with respect to the solvent selected from mineral oil, squalane, polybutene and anhydrous lanolin,
Furthermore, 0.3 to 5.0% by weight is preferable. If the amount of the polyolefin added exceeds 10.0% by weight, the ease with which it is taken out from the container decreases, and if it is less than 0.1% by weight, the oil component tends to separate. The above-mentioned gel-like substance can be obtained as a commercial product, and for example, Plastibase (trade name, manufactured by Bristol-Myers Squibb Company), which is made of polyethylene and liquid paraffin, is known. In the present invention, such a market product can be used. The content of the gel-like substance in the denture stabilizer of the present invention can be varied depending on the content of the vinyl acetate resin, but is generally 5 to 50% by weight based on the total weight of the denture stabilizer, and 5-30% by weight is suitable and 10-20% by weight is more preferred. If the added amount of the gel-like substance exceeds 50% by weight, the cushioning effect is lowered and the purpose of use as a denture stabilizer cannot be fulfilled. If it is less than 5% by weight, the desired effect cannot be achieved sufficiently.

The denture stabilizer of the present invention may be further added with commonly used additives in a usual amount.
For example, fats and waxes such as beeswax and candelilla wax, glycerin, polyethylene glycol, propylene glycol, sorbitol liquid, 0.1-1.0% by weight of a wetting agent such as 1,3-butylene glycol, monoglycerin fatty acid ester , Polyglycerin fatty acid ester,
Emulsifiers such as sorbitan fatty acid ester 0.5 to 10.0% by weight, calcium carbonate, calcium hydrogen phosphate, silicic acid anhydride, hydroxyapatite, cellulose powder and the like powder 0.5 to 15.0% by weight, water In addition, a solvent such as ethanol may be added in an amount of 10.0 to 35.0 wt. The denture stabilizer of the present invention can be produced according to a conventional method using the above components. Further, the container for filling the denture stabilizer of the present invention is not particularly limited, and an aluminum tube, a laminate tube, a plastic tube or the like which can be usually used can be used. The denture stabilizer of the present invention can be used by applying an appropriate amount to the denture base.

[0009]

EFFECTS OF THE INVENTION A paste-like denture stabilizer based on vinyl acetate resin is used as a base material, and polyolefin is added to mineral oil, squalane,
By blending with a gel-like substance obtained by mixing and dissolving with at least one selected from polybutene and anhydrous lanolin, it can be easily extruded from the tube, good applicability to the denture base can be smoothly applied, Moreover, a denture stabilizer having good peelability from the denture base can be obtained.

The present invention will be described in more detail with reference to comparative examples and examples, but the present invention is not limited thereto.

EXAMPLES AND COMPARATIVE EXAMPLES Denture stabilizers having the compositions shown in Table 1 below were prepared according to a conventional method, and the following tests were conducted. In addition, all the numerical values showing the component amounts below mean% by weight. Ease of Extrusion from Tube Laminated tubes were filled with the denture stabilizers of Comparative Examples and Examples, stored for 1 week at room temperature, and the ease of extrusion of the sample from the tube with fingers was evaluated. Ease of application to denture base 3 g of a sample was applied to a methacrylic resin maxillary denture base by hand according to a conventional method to evaluate the ease of application. 1g of the sample that is easy to remove from the denture base was applied to the upper denture base made of methacrylic resin and immersed in physiological saline at 36 ° C for 24 hours. did.

With respect to the above and the above, the following scores were judged by 10 adult panelists and evaluated by the total judgment score. Easy to push out from tube 3: Easy to put out 2: Hard to put out 1: Hard to put out 1: Easy to apply to denture base 3: Easy to apply 2: Hard to apply 1: Hard to apply 1: Easy to remove from denture base 3: Easy to peel 2: Slightly hard to peel off 1: Hard to peel off, and the total score of 28 points or more was evaluated as ⊚, 25 to 27 points as ○, 20 to 24 points as Δ, and 19 points or less as x. The results are shown in Table 1.

[0012]

[Table 1] ──────────────────────────────────── Actual Example Composition Comparative Example ── ───────────────── 1 2 3 4 5 ──────────────────────────── ──────── Low degree of polymerization vinyl acetate resin 8.0 8.0 7.0 6.0 5.0 5.0 (Average degree of polymerization 700) Medium degree of polymerization vinyl acetate resin 57.0 52.0 48.0 44.0 40.0 50.0 (Average degree of polymerization 1400) Gel substance-5.0 10.0 15.0 20.0 − (Plastibase 50 W) Gel-like substance − − − − − 10.0 (Plastibase 30 W) Ethanol 17.0 17.0 17.0 17.0 17.0 17.0 Purified water 9.0 9.0 9.0 9.0 9.0 9.0 Beeswax 1.0 1.0 1.0 1.0 1.0 1.0 Calcium carbonate 5.0 5.0 5.0 5.0 5.0 5.0 Monoglycerin 2.0 2.0 2.0 2.0 2.0 2.0 Fatty acid ester sorbit solution 1.0 1.0 1.0 1.0 1.0 1.0 ──────────────────────── ──────────── × ◎ ◎ ◎ ◎ ◎ Ease of extrusion −−−−−−−−−−−−−−−−−−−−−−−−−− −−−−−−−−−− Ease of application to denture base × Δ ◎ ◎ ◎ ◎ −−−−−−−−−−−−−−−−−−−−−−−−−−− −−−−−−−−− Ease of peeling from the denture base × △ ◎ ◎ ◎ ◎ ◎ ──────────────────────────── ────────

Claims (2)

[Claims] 1. A paste-like denture stabilizer based on vinyl acetate resin, comprising a gel-like substance obtained by mixing and dissolving polyolefin with at least one selected from mineral oil, squalane, polybutene and anhydrous lanolin. A denture stabilizer, which is characterized by being blended. 2. The denture stabilizer according to claim 1, wherein the content of the vinyl acetate resin is 30 to 80% by weight and the content of the gel-like substance is 5 to 50% by weight based on the total weight of the denture stabilizer. .