Patent ID: 9622840
Date: 2017-04-18
CPC Classifications: A61C,A61K,A61N,A61Q

Claim:
1. A method of whitening teeth, comprising: applying a whitening composition as a layer having a thickness less than about 0.3 mm to at least one tooth; maintaining the whitening composition on the at least one tooth for a first time period without an application of light radiation; and after the first time period while the whitening composition remains upon the at least one tooth, directing a light radiation toward the at least one tooth for a second time period, the first time period having a duration greater than 50% of a total duration of the first and second time periods; and removing the whitening composition from the at least one tooth; wherein the whitening composition is translucent and is applied to said at least one tooth by a translucent strip or tray, and wherein said light radiation is directed toward said tooth through said translucent strip or tray and through said translucent whitening composition; and wherein the radiation intensity is no greater than about 150 mW/cm