Hydrogel compositions for tooth whitening
First Claim
Patent Images
1. A tooth whitening system, comprising:
- an outer substrate that serves as an external surface of the system following application to a tooth surface;
a tooth contact adhesive layer adhered to the outer substrate, anda removable release liner positioned on the tooth contact adhesive layer;
wherein the tooth contact adhesive layer comprises a solid composition comprising;
(a) a water-swellable, water-insoluble copolymer of methacrylic acid and ethyl acrylate;
(b) a blend of a poly(N-vinyl lactam) homopolymer and a poly(alkylene glycol) oligomer capable of hydrogen bonding to the poly(N-vinyl lactam); and
(c) a peroxide whitening agent.
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Abstract
A composition is provided, wherein the composition comprises a water-swellable, water insoluble polymer, a blend of a hydrophilic polymer and a complementary oligomer capable of hydrogen bonding to the hydrophilic polymer, and a whitening agent, preferably a peroxide. The composition finds utility as a tooth whitening composition and is applied to the teeth in need of whitening, and then removed when the degree of whitening has been achieved. In certain embodiments, the composition is translucent. Methods for preparing and using the compositions are also disclosed.
363 Citations
20 Claims
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1. A tooth whitening system, comprising:
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an outer substrate that serves as an external surface of the system following application to a tooth surface; a tooth contact adhesive layer adhered to the outer substrate, and a removable release liner positioned on the tooth contact adhesive layer; wherein the tooth contact adhesive layer comprises a solid composition comprising; (a) a water-swellable, water-insoluble copolymer of methacrylic acid and ethyl acrylate; (b) a blend of a poly(N-vinyl lactam) homopolymer and a poly(alkylene glycol) oligomer capable of hydrogen bonding to the poly(N-vinyl lactam); and (c) a peroxide whitening agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for whitening a tooth, comprising:
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providing a tooth whitening system comprised of (i) an outer substrate that serves as an external surface of the system following application to a tooth surface;
(ii) a tooth contact adhesive layer adhered to the outer substrate, and (iii) a removable release liner positioned on the tooth contact adhesive layer;wherein the tooth contact adhesive layer comprises a solid composition comprising; (a) a water-swellable, water-insoluble copolymer of methacrylic acid and ethyl acrylate; (b) a blend of a poly(N-vinyl lactam) homopolymer and a poly(alkylene glycol) oligomer capable of hydrogen bonding to the poly(N-vinyl lactam); and (c) a peroxide whitening agent. - View Dependent Claims (17, 18, 19, 20)
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Specification