Patent ID: 6500408
Filing Date: 2002-12-31
Classification: A61K,A61P,A61Q

Abstract:
A non-abrasive gel dental bleach adapted for sustained application to a patient's teeth, such as for an hour or more, the non-abrasive gel dental bleach comprising:a bleaching agent, said bleaching agent being capable of releasing an oxidizing agent, said oxidizing agent being capable of reacting with organic molecules located a human tooth in order to remove stains from the tooth, at least about 25% by weight of a polyvinylpyrrolidone (PVP) thickening agent, said PVP thickening agent being the only thickening agent in the non-abrasive gel dental bleach, said PVP thickening agent serving to thicken the non-abrasive gel dental bleach to the point where it will stick to a patient's teeth against the force of gravity for the entirety of a bleaching session that exceeds one hour in duration, said PVP thickening agent serving to thicken the non-abrasive gel dental bleach to the point where the nonabrasive gel dental bleach will remain in contact with a human tooth for the entirety of a bleaching session against the force of gravity, said PVP thickening agent serving to thicken the gel dental bleach to the point where the non-abrasive gel dental bleach will tend to maintain a dental bleaching tray in juxtaposition with a patient's teeth against the force of gravity during bleaching, and a liquid component, said non-abrasive dental bleach being free from abrasive materials, said non-abrasive dental bleach being adapted for application to human teeth from a dental bleaching tray; wherein said polyvinylpyrrolidone has a molecular weight in the range of 28,000 to 1,500,000; and wherein the non-abrasive gel dental bleach is substantially free from abrasive components.