Patent ID: 6780401
Filing Date: 2004-08-24
Classification: A61K,A61Q

Abstract:
A dry matrix patch for tooth whitening, comprising:a peroxide tooth whitening agent; and a peroxide-compatible hydrophilic glass polymer as a base polymer, the patch being able, when applied to the teeth of a user, to provide adhesion to enamel and release the tooth whitening agent upon becoming hydrated; wherein the hydrophilic glass polymer is selected from the group consisting of polyalkylvinylether-maleic acid copolymer, polyvinyl alcohol, polyacrylic acid, Poloxamer 407, polyvinyl pyrrolidone-vinyl acetate copolymer, polyvinyl pyrrolidone, Polyquaterium-11, Polyquaterium-39, carbomer, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin, sodium alginate and mixtures thereof.