Drug – bio-affecting and body treating compositions – Dentifrices
Patent
1982-05-28
1984-11-13
Robinson, Douglas W.
Drug, bio-affecting and body treating compositions
Dentifrices
424 78, 424 81, A61K 716, A61K 3174, A61K 3178
Patent
active
044825358
DESCRIPTION:
BRIEF SUMMARY
STATE OF THE ART
In the dental therapeutical field, polymers are known which can serve as replacement for tooth enamel or for filling cavities in teeth. The significance of these compositions is that they adhere very well to teeth and their hardness reaches or approaches the hardness of the tooth enamel. These enamels, lacquers and the like are applied in dental technology workplaces or clinics and it is not possible to remove them at desired times. These coatings or replacements can last in general up to three years. Commercially numerous compositions are sold, these compositions being applied in solvents so that the polymerization is in part effective upon the tooth surface. For such adhesive dental plastics, generally polyurethane lacquers (e.g. Bayer D 520, Epoxylite 9070, Elmex Protector), polystyrene polymers (e.g. Tubulitec), polyethylmethacrylate polymers or copolymers (e.g. Orthonite) or glycidylmethacrylate copolymers (e.g. Epoxylite 9075, Nuva Seal Espe 71 730 and 717) are used.
The foregoing compositions primarily serve for therapeutics and have a long lasting effect. However, it is in many cases desirable to cosmetically improve the appearance of the teeth only for a brief period as, for example, in the entertainment industry, in theaters, in filming, in television, etc. In such cases, it is desirable to use a composition which will remain only for a short period upon the teeth and can readily be removed therefrom but which will ensure a desirable appearance. It is also very important in such cases to be able to apply the composition at various times and places, i.e. without the intervention of a dentist or technological operations.
THE ESSENCE OF THE INVENTION
The object is achieved with the cosmetic composition of the invention in that the composition is easily handled, can be applied by anyone, the applied coating dries rapidly and, depending upon the composition, remains on the teeth for a period of several hours to several days and from the surface of the teeth can be removed without any difficulty. The hardness of a coating and as a result the time to separation can be varied in accordance with requirements.
PREFERRED EMBODIMENT OF THE INVENTION
The cosmetic tooth composition of the invention comprises one or more film-forming polymers or copolymers--of which at last one is a water-soluble, limitedly soluble, emulsifiable or dispersible polymer--and a coloring agent, and advantageously polymer from monomers or prepolymer corresponding to the film-formed polymer and, if desired, aromatics or other auxiliary substances.
The film-forming polymer can be any nontoxic polymer. Methacrylic acid, methyl-methacrylic acid and their esters, polymers and copolymers of urethanes and styrenes, glycidylmethacrylate polymers and copolymers can advantageously be used. If desired, the composition can contain the polymers together with polymerization catalysts or initiators, and monomers corresponding to the polymer. These film-forming polymers are not soluble in water although they form dispersions in water.
As water-soluble or limitedly soluble polymers, preferably polyvinylacetate, polyvinylpyrrolidone or a polyvinylmethyl ester can be used. As hygroscopic substance glycerine can be used instead of the foregoing.
Polyvinylacetate with a molecular weight of about 100,000, containing 20% acetate and also polymethyl esters which increase adhesion, can preferably be used.
The coloring agent employed in the composition can be any nontoxic coloring agent with good covers; in the case of a further [white] color, titanium dioxide is advantageously used.
If desired, the composition can contain aromatic substances to ensure a pleasant sensation and these can be any nontoxic and acceptable aromatic [aromatizing] agent, preferably menthol. The composition can also use a fluorine-releasing compound as has been used with tooth replacements.
The composition is preferably applied in the form of a dispersion in a solvent which can be formed by any nontoxic liquid, as for example ethanol and/or water. The drying p
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Fabry Laszlo
Sugar Andras
Dubno Herbert
Robinson Douglas W.
Ross Karl F.
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