JPH0912421A - Denture stabilizer - Google Patents

Abstract

PURPOSE: To obtain a denture stabilizer capable of inhibiting time dependent color change by blending a specific chemical compound to a pasty system comprising vinyl acetate as a base material. CONSTITUTION: A tocopherol is blended to this denture stabilizer comprising vinyl acetate as a base material. As the tocopherol, an α-tocopherol is preferably used. As the α-tocopherol, e.g. dl-α-tocopherol, dl-α-tocopherol acetate, dl-α- tocopherol succinate and their salts can be cited. It is suitable to blend 0.01-10.0wt.% tocopherol based on the total weight of the denture stabilizer. The vinyl acetate resin as the base material can be a vinyl acetate resin having low, middle or high degree of polymerization. The resin can be used independently, or in properly combinating those. It is preferable to blend 30-80wt.% resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a denture stabilizer used for fixing dentures, and more particularly to a denture stabilizer whose discoloration with time is suppressed.

[0002]

2. Description of the Related Art Denture stabilizers are used in the use of full dentures or partial dentures to supplement the compatibility with gums due to aging factors. At present, denture stabilizers using powder, non-aqueous paste or synthetic resin are used. Among them, a denture stabilizer using a synthetic resin, for example, a vinyl acetate resin, is widely used because of its excellent usability and functionality. However, a denture stabilizer based on a vinyl acetate resin is often colored yellow or brown with time, and there is a drawback in that discoloration is likely to occur particularly during storage at high temperature. It is considered that the cause of the discoloration of the denture stabilizer using the vinyl acetate resin is due to the vinyl acetate resin itself or a component added for improving the feeling of use.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a denture stabilizer which is less discolored over time.

[0004]

Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that by adding tocopherols to a denture stabilizer based on vinyl acetate resin, It was found that a denture stabilizer in which such discoloration was suppressed was obtained, and the present invention was completed. Therefore, the present invention is a paste-like denture stabilizer based on vinyl acetate resin, which is characterized by containing tocopherols. As the vinyl acetate resin which is the base material of the denture stabilizer of the present invention, those which have been conventionally used for denture stabilizers can be used. Generally classified as low polymerization degree vinyl acetate resin, medium polymerization degree vinyl acetate resin, high polymerization degree vinyl acetate resin,
Of these, vinyl acetate resins having different polymerization degrees may be used alone or in appropriate combination. The compounding amount of the vinyl acetate resin in the denture stabilizer of the present invention may be a commonly used amount, and generally 30 to 80% by weight is suitable with respect to the total weight of the denture stabilizer, and more preferably. 40 to 70% by weight is blended.

As the tocopherols used in the present invention, α-tocopherol is preferably used. Examples of α-tocopherol include dl-α-tocopherol, dl-α-tocopherol acetate, and dl-α succinate.
-Tocopherol and the like. Further, these salts, for example, alkali metal salts and alkaline earth metal salts, specifically, dl-α-tocopherol calcium acetate acetate, dl-α-tocopherol sodium acetate acetate, dl-α-acetate.
Tocopherol potassium, dl-α-tocopherol magnesium acetate, dl-α-tocopherol calcium succinate, dl-α-tocopherol sodium succinate, dl-α-tocopherol potassium succinate, dl-α-tocopherol magnesium succinate and the like can be mentioned. . You may use these tocopherols individually or in combination of 2 or more types. The above-mentioned tocopherols are commonly available on the market, and such commercial products can be used in the present invention. The compounding amount of the tocopherols used in the present invention is not particularly limited, but 0.01 to 10.0% by weight is suitable with respect to the total weight of the denture stabilizer, and further 0.1 to 5. 0% by weight is preferred.
If it is less than 0.01% by weight, the desired effect is not sufficiently achieved, and if it exceeds 10.0% by weight, the effect is not improved.

[0006] The denture stabilizer of the present invention may further contain commonly used additives in a conventional compounding amount.
For example, oils and waxes such as beeswax, candelilla wax, microcrystalline wax, paraffin, vaseline, and carnauba wax, glycerin, polyethylene glycol, propylene glycol, sorbit solution,
A wetting agent such as 1,3-butylene glycol is added in the range of 0.1 to 10.0.
% By weight, monoglycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester and the like as an emulsifier 0.5 to 10.0% by weight, powder of calcium carbonate, calcium hydrogen phosphate, silicic acid anhydride, hydroxyapatite, cellulose powder, etc. 0.5 to 15.0% by weight of water,
A solvent such as ethanol is added in an amount of 10.0 to 35.0% by weight.
Dyes, fragrances, etc. may be added. The denture stabilizer of the present invention can be produced by a conventional method using the above components. Further, the container for filling the denture stabilizer is not particularly limited, an aluminum tube that can be usually used,
Laminate tubes, plastic tubes, etc. can be used. The denture stabilizer of the present invention can be used by applying an appropriate amount to the denture base.

[0007]

By adding tocopherols to a paste-like denture stabilizer based on vinyl acetate resin, a denture stabilizer with suppressed discoloration over time can be provided.

Comparative Examples and Examples 1 to 12 The present invention will be described in more detail with reference to Comparative Examples and Examples, but the present invention is not limited thereto. Denture stabilizers having the compositions shown in Tables 1 and 2 (unit:% by weight) were produced according to a conventional method. The total amount of purified water is 100% by weight.
Was added. After the production, the laminate tube and the aluminum tube were filled and stored at 5 ° C. and 50 ° C. for 1 month, respectively, and sensory evaluation was performed on the degree of coloring at 50 ° C. with 5 ° C. without coloring as a control. The results are also shown in the table. The evaluation criteria of the coloring degree are as follows. ◎: No coloration ○: Almost no coloration △: Some coloration ×: Coloration

[0009]

[Table 1] ──────────────────────────────────── Actual Example Composition Comparative Example ── ────────────────── 1 2 3 4 5 6 7 ────────────────────────── ─────────── Vinyl acetate resin 65 65 65 65 65 65 70 60 Ethanol 17 17 17 17 17 17 20 15 Beeswax 1 1 1 1 1 1 1 1 Calcium carbonate 5 5 5 5 5 5 5 5 5 Monoglycerin 2 2 2 2 2 2 2 2 2 Fatty acid ester dl-α-tocopherol acetate-0.01 0.05 0.1 0.5 1 0.5 0.5 Purified water Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual Residual −−−−−−−−−−−−−−−−−−−−− Laminate × ○ ○ ◎ ◎ ◎ ◎ ◎ ◎ Colored tube degree Aluminum × ○ ○ ◎ ◎ ◎ ◎ ◎ ◎ Tube ──────── ────────────────────────────

[0010]

[Table 2] ──────────────────────────────── Actual example component names ────────── ───────── 8 9 10 11 12 ─────────────────────────────── Vinyl acetate resin 65 70 60 65 65 Ethanol 17 20 15 17 17 Beeswax 1 1 1 1 1 Calcium carbonate 5 5 5 5 5 Monoglycerin 2 2 2 2 2 Fatty acid ester dl-α-tocopherol 0.5 0.5 0.5--Succinic acid dl-α-tocopherol-- -0.5-dl-α-tocopherol calcium succinate----0.5 Purified water Residual residue Residual residue Residual residue ---------- −−−− Laminate ◎ ◎ ◎ ◎ ◎ ◎ Colored tube degree Aluminum ◎ ◎ ◎ ◎ ◎ ◎ Tube ─────────────────────────────── ─

Claims (3)

[Claims] 1. A paste-like denture stabilizer based on a vinyl acetate resin, wherein the denture stabilizer contains tocopherols. 2. The denture stabilizer according to claim 1, wherein the tocopherols are dl-α-tocopherol. 3. The denture stabilizer according to claim 1, wherein the tocopherols are selected from dl-α-tocopherol acetate and salts thereof.