US 6,884,426 B2Granted

Methods for whitening teeth

AssigneeThe Procter & Gamble Company

InventorsPaul Albert Sagel, Robert Stanley Dirksing, Frederick James Rohman

Life of this patent

Estimating the term…

Loading patent…

Abstract

Method for whitening teeth are provided. The methods include the steps of providing a strip of material and applying a thin layer of a tooth whitening substance having a whitening active selected from the group consisting of peroxides, metal chlorites, perborates, percarbonates, peroxyacids, hypochlorites, and combinations thereof to a front surface of a plurality of teeth, wherein the amount of the tooth whitening substance is between about 0.05 grams and about 0.4 grams. The method further includes the steps of conforming the strip of material to the front surface of the plurality of teeth and removing the strip of material, wherein the front surface of the plurality of teeth have between a 1 and a 4 VITA LUMIN shade guide improvement in color.

Claims13

Dependent claims

A method of bleaching a plurality of adjacent teeth, the teeth having facial and lingual surfaces, comprising:

applying a tooth bleaching delivery system to a plurality of adjacent teeth, wherein the tooth bleaching delivery system comprises a strip of material and a layer of a tooth bleaching composition having a peroxide active and wherein the strip of material comprises a plurality of layers and one of the layers is a non-woven material, wherein applying the tooth bleaching system comprises:
a) applying a first portion of the strip of material and tooth bleaching composition to the facial surfaces of the plurality of adjacent teeth so that the tooth bleaching composition contacts the facial surfaces of the plurality of adjacent teeth;
b) folding a second portion of the strip of material and tooth bleaching composition about the incisal edges of the plurality of adjacent teeth;
and
c) applying the second portion of the strip and tooth bleaching composition to at least a portion of the lingual surfaces of one or more of the plurality of adjacent teeth, wherein the tooth bleaching composition is adhesive during use and wherein the tooth bleaching delivery system is applied to the facial and lingual surfaces of the plurality of adjacent teeth for a sufficient period of time for the peroxide active to act upon the facial surfaces of the plurality of adjacent teeth.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/321,252Filed 17 Dec 2002 · continuation
Priority: 6 Jun 1997
Published: US 2003/0068284 A110 Apr 2003
Granted: 26 Apr 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61K 8/22
Containing inorganic ingredients: peroxides; Oxygen; Ozone
A61C 19/063
Implements for therapeutic treatment: medicament applicators for teeth or gums, e.g. treatment with fluorides
A61C 19/066
Medicament applicators for teeth or gums, e.g. treatment with fluorides: bleaching devices; Whitening agent applicators for teeth, e.g. trays or…
A61K 6/30
Preparations for dentistry: compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives

Family

Application08/870,330Parent of this continuation-in-part · filed 6 Jun 1997
Application09/040,000Parent of this continuation-in-part · filed 17 Mar 1998
Application09/268,185Parent of this continuation · filed 15 Mar 1999
Application09/864,640Parent of this continuation · filed 24 May 2001
US 2003/0068284 A1Pre-grant publication · published 10 Apr 2003
US 5,891,453 AParent of this continuation-in-part
Application09/268,185Parent of this continuation-in-part
US 5,879,691 AParent of this continuation-in-part
US 2002/0006387 A1Published application
US 2002/0018754 A1Published application
US 6,884,426 B2This patent

From the US filing history. Foreign family members aren’t listed.