Tooth whitening compositions and methods
AssigneeUltradent Products, Inc.
InventorTianming Chen
Life of this patent
Estimating the term…
Abstract
A dental bleaching composition comprises a dental bleaching agent and a polyvinylpyrrolidone thickening agent. The bleaching composition may include a liquid component, flavoring agents, a basic substance and desensitizing agents, as desired. Polyvinylpyrrolidone avoids acid etching and chelation of teeth that were problematic in bleaches using carbomer as a thickener. A delivery system for delivering the bleaching composition comprises the aforementioned dental bleaching composition in combination with a moisture-resistant barrier layer such as a dental tray or a flexible strip of material.
Claims20
A tooth whitening composition, comprising:
- a bleaching agent consisting of at least one of hydrogen peroxide, carbamide peroxide, sodium perborate, or sodium percarbonate;
- at least 10% of a liquid component comprising at least one of polyethylene glycol, propylene glycol, water, ethanol, or glycerin;
- and
- a tertiary amide based polymer,
- wherein the bleaching agent and the tertiary amide based polymer are combined with the liquid component to form a mixture capable of adhering to teeth in order to keep the bleaching agent in contact with the teeth.
A tooth whitening strip, comprising:
- a strip of material configured to be placed over a plurality of teeth in a person's mouth;
- and
- a tooth whitening composition disposed on the strip and comprising:
- a peroxide;
- a liquid component comprising water and polyethylene glycol;
- and
- a tertiary amide based polymer,
- wherein the peroxide and the tertiary amide based polymer are combined with the liquid component to form a mixture that provides sufficient adhesive attachment to hold the strip of material in place over the plurality of teeth.
A method of whitening a person's teeth comprising:
- applying a tooth whitening composition onto the person's teeth, the tooth whitening composition comprising:
- a bleaching agent consisting of at least one of hydrogen peroxide, carbamide peroxide, sodium perborate, or sodium percarbonate;
- a liquid component comprising at least one of polyethylene glycol, propylene glycol, water, ethanol, or glycerin;
- and
- polyvinylpyrrolidone;
- applying light or heat to the tooth whitening composition in order to accelerate tooth whitening;
- and
- removing the tooth whitening composition from the person's teeth.
Dependencies are inferred from the claim text.