US 12,376,951 B2
Methods for whitening teeth
Paul Albert Sagel, Maineville, OH (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Sep. 21, 2023, as Appl. No. 18/471,338.
Application 13/933,857 is a division of application No. 13/150,392, filed on Jun. 1, 2011, granted, now 9,642,687, issued on May 9, 2017.
Application 18/471,338 is a continuation of application No. 16/889,715, filed on Jun. 1, 2020, granted, now 11,793,620.
Application 16/889,715 is a continuation of application No. 15/456,359, filed on Mar. 10, 2017, granted, now 10,667,893, issued on Jun. 2, 2020.
Application 15/456,359 is a continuation of application No. 13/933,857, filed on Jul. 2, 2013, granted, now 9,622,840, issued on Apr. 18, 2017.
Claims priority of provisional application 61/354,926, filed on Jun. 15, 2010.
Prior Publication US 2024/0122691 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61C 19/06 (2006.01); A61C 1/08 (2006.01); A61K 8/02 (2006.01); A61K 8/22 (2006.01); A61N 5/06 (2006.01); A61Q 11/00 (2006.01)
CPC A61C 19/066 (2013.01) [A61C 1/088 (2013.01); A61K 8/0233 (2013.01); A61K 8/22 (2013.01); A61N 5/062 (2013.01); A61Q 11/00 (2013.01); A61K 2800/81 (2013.01); A61K 2800/87 (2013.01); A61N 2005/0606 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of whitening teeth, comprising:
applying a whitening composition to teeth, wherein the whitening composition comprises peroxide;
maintaining the whitening composition on the teeth for a first time period without an application of light radiation; and
after the first time period, directing a light radiation provided at a wavelength between about 380 nm and about 520 nm toward the teeth for a second time period,
wherein a duration of the first time period is greater than 50% of a combined duration of the first time period and the second time period.