Patent ID: 7785572
Filing Date: 2010-08-31
Classification: A61K,A61Q

Abstract:
1. A method for teeth whitening comprising: providing a dry adhesive device for tooth attachment comprising a matrix adhesive layer and a backing layer, wherein the adhesive layer contains a peroxide teeth whitening agent and a hydrophilic glassy polymer as a base polymer selected from polyalkylvinyl ether-maleic acid copolymer, polyvinyl alcohol, polyacrylic acid, poloxamer 407, polyvinyl pyrrolidone-vinyl acetate copolymer, polyvinyl pyrrolidone (PVP), polyquaternium-11, polyquaternium-39, carbomer, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin and sodium alginate; hydrating the adhesive layer; increasing the adhesive strength of said adhesive layer as compared to its dry state prior to its hydration; releasing the tooth whitening agent on the enamel layers of the teeth when the adhesive layer is being hydrated; maintaining the adhesive strength of the device substantially constant while the teeth whitening agent is being released from the adhesive layer; and contacting the adhesive layer with teeth for a period of about 15 minutes, wherein said hydrophilic glassy polymer is present in amount sufficient to increase the adhesive strength by at least 62% to 260% post hydration.