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US 6,685,923 B2Granted
Tooth whitening material and method of whitening teeth
AssigneeDentsply Research & Development Corp.
InventorsKenneth S. Peterson, James M. Sherman
Life of this patent
Estimating the term…
Abstract
A dental tooth whitening material sets to a rubber-like or elastomeric consistency. The material includes hydrogen peroxide. A method of whitening teeth employs such a material by placing it into a dental tray, a backing sheet or by placing the material directly onto a tooth. Once the material has set to its solid or semi-solid consistency, the dental tray, if employed, can be left in place or removed.
Claims8
A method of tooth whitening using a strip for placement upon dentition to whiten teeth comprising the steps of:
- providing a mixture comprising a powder phase and a liquid phase;
- said powder phase comprising a salt selected from the group consisting of a mixed powder of sodium/calcium salts of the copolymer of methyl vinyl ether/maleic anhydride, a blend of mixed sodium/calcium salts of the copolymer of methyl vinyl ether/maleic anhydride, and mixtures thereof, and optionally, a filler;
- said liquid phase comprising a solution of from about 3 to about 50 percent by weight of hydrogen peroxide in water;
- forming said mixture into the shape of a strip and placing the strip onto dentition.
1 more element
Dependencies are inferred from the claim text.