Patent ID: 6514543
Filing Date: 2003-02-04
Classification: A61K,A61Q

Abstract:
A method for whitening the teeth of a subject comprising:providing a multi chamber vessel, the vessel including a first chamber having a first formulation comprising a hydrogen peroxide precursor compound and an anhydrous carrier wherein the first formulation is substantially free of an alkaline pH adjusting agent; and a second chamber having a second formulation comprising an alkaline pH-adjusting agent and wherein the second formulation is substantially free of the hydrogen peroxide precursor compound; the first formulation or the second formulation including a thickener and applying pressure to the multi chamber vessel so as to force the first and second formulations through a mixer to form a mixture which then emerges from a single exit, the mixture being a thickened, aqueous hydrogen peroxide containing composition having a pH of greater than 5.5; and contacting the mixture to the teeth of the subject for less than one hour.