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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 s

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.

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1. 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

1. 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. 2. A composition as in claim 1, wherein said diller is titanium dioxide or silica, and is present in an amount of from 0 to 10 percent by weight based upon the total weight of said mixture. 3. A composition as in claim 1, wherein the mixture comprises from about 10 to about 70 percent by weight of said hydrogen peroxide based upon the total weight of said mixture. 4. A composition as in claim 3, wherein said hydrogen peroxide is present in an amount of from about 30 to about 35 percent by weight salt based upon the total weight of said mixture. 5. A composition as in claim 1, further comprising from 0 to about 40 percent by weight of carbamide peroxide based upon the total weight of said mixture. 6. A composition as in claim 1, further comprising from 0 to about 30 percent by weight of glycerin based upon the total weight of said mixture. 7. A composition as in claim 1, further comprising from 0 to about 40 percent by weight of water based upon the total weight of said mixture. 8. A composition as in claim 1, further comprising from 15 to about 65 percent by weight of said salt based upon the total weight of said mixture.