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Methods for whitening teeth

  • US 9,622,840 B2
  • Filed: 07/02/2013
  • Issued: 04/18/2017
  • Est. Priority Date: 06/15/2010
  • Status: Active Grant
First Claim
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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/cm2.

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