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US 5,922,307 AGranted
Tooth bleaching compositions
AssigneesR. Eric Montgomery, Idex Dental Sciences, Inc.
InventorRobert Eric Montgomery
Life of this patent
Estimating the term…
Abstract
The present invention relates to improved dental compositions and methods for bleaching teeth. More specifically, this invention is directed towards hydrogen peroxide-containing compounds that are maintained at a substantially constant pH range of 6.0-10.0 during the tooth-bleaching procedure in the presence of a calcium chelating agent.
Claims10
A method for bleaching a tooth surface, comprising:
- providing a composition consisting essentially of
- hydrogen peroxide, and
- a matrix for carrying the hydrogen peroxide, the matrix having
- a water content greater than 70% by weight, based on the weight of the composition,
- a thickening agent,
- an alkaline pH adjusting agent, and
- a calcium chelating agent,
- wherein the pH of the composition during the bleaching process is substantially constant within a range of 6.0-10.0;
- and
- applying the composition to the tooth surface.
7 more elements
A method for bleaching a tooth surface, comprising:
- providing a composition containing
- hydrogen peroxide, and
- a matrix carrying the hydrogen peroxide, the matrix having
- a water content greater than 70% by weight, base on the weight of the composition,
- a thickening agent,
- a pH adjusting agent, and
- a calcium chelating agent,
- wherein the pH of the tooth-bleaching composition during the bleaching process is substantially constant within a range of 6.0-10.0;
- Packing the composition as a one-component system wherein the matrix is sufficiently pure in order to avoid peroxide destabilization by metal ion contaminants;
- and applying the composition to the tooth surface.
7 more elements
Dependencies are inferred from the claim text.