Patent ID: 6365134
Filing Date: 2002-04-02
Classification: A61K,A61Q

Abstract:
A component for whitening teeth comprising:a) a first component in the form of a suspension or solution comprising about 6.8% to 34% carbamide peroxide and a substantially anhydrous carrier, said first component having a pH of about 3.0 to 7.5 and being substantially colorless; and b) a second component in the form of an aqueous gel or paste comprising one or more alkali materials selected from the group consisting of calcium oxide, sodium hydroxide, potassium hydroxide, potassium bicarbonate, sodium acetate, sodium carbonate, sodium bicarbonate, sodium benzoate, sodium acrylate, sodium methacrylate, sodium gluconate, calcium carbonate, magnesium carbonate, calcium phosphates, calcium bicarbonate, calcium gluconate, calcium silicate and combinations thereof; and FD&C Blue #1, FD&C Blue #2, or combinations thereof as a dye indicator which gradually discolors or loses color when reacted with a radical oxygen; said second component having a pH of about 8.0 to 12; wherein admixing of said first and second components prior to applying the composition to the teeth provides the composition for whitening teeth having a pH of about 8.0 to 12.