Process and composition for high efficacy teeth whitening
AssigneeScientific Pharmaceuticals, Inc.
InventorsJan A. Orlowski, David V. Butler
Life of this patent
Estimating the term…
Abstract
A process and composition for bleaching teeth made up of two formulations blended together before each application. The invention offers faster results while significantly reducing the possibility of user discomfort. One of said formulations contains hydrogen peroxide (in a free form or in the form of an adduct), the other contains salts and hydroxides and/or oxides of metals belonging to the first or second group of the Periodic Table which stimulate the generation of radical oxygen. The invention allows for balancing pH and assuring adequate water concentration to avoid tissue desiccation and user discomfort without compromising shelf life of the device.
Claims16
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.
A composition for whitening teeth comprising:
- a first component in the form of a suspension or solution, said first component being substantially colorless and having a pH of about 3.0 to 7.5 and comprising
- about 6.8% to 34% carbamide peroxide, and
- a substantially anhydrous carrier selected from the group consisting of glycerin, ethyl alcohol, propylene glycol, polyalkalene glycols, and combinations thereof, and
- a second component in the form of an aqueous gel or paste, said second component having a pH of about 8.0 to 12 and comprising
- one or more alkali materials selected from the group consisting of potassium bicarbonate, sodium carbonate, sodium bicarbonate, calcium carbonate, calcium phosphate, 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;
- wherein admixing of said first and second components prior to applying the composition to teeth provides the composition for whitening teeth having a pH of about 8.0 to 12.
A process for whitening teeth, comprising:
- mixing first and second components to form a tooth whitening composition,
- the first component being 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
- the second component being in the form of an aqueous gel or paste comprising one or more alkali materials selected from the group consisting of oxides, hydroxides, and weak salts of sodium, potassium, calcium, or magnesium, said second component having a pH of about 8.0 to 12 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 radical oxygen;
- and
- contacting one or more teeth with the tooth whitening composition for about 10-60 minutes or less.
Dependencies are inferred from the claim text.