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1. US20070237728 - Method and Composition for Dental Bleaching

Office
United States of America
Application Number 11763918
Application Date 15.06.2007
Publication Number 20070237728
Publication Date 11.10.2007
Publication Kind A1
IPC
A61K 6/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
6Preparations for dentistry
Applicants HIGH TECH LASER
Inventors VERHEYEN Peter
Agents BROWDY AND NEIMARK, P.L.L.C.;624 NINTH STREET, NW
Priority Data 10380431 22.07.2003 US
BE00000107 14.09.2000 WO
Title
(EN) Method and Composition for Dental Bleaching
Abstract
(EN)

This invention relates to a method for bleaching teeth that have been discoloured by a staining agent. The method comprises the steps of coating an area of at least one tooth to be bleached with a dental bleaching composition and irradiating the coated area with laser energy for a predetermined period of time to activate an oxidising agent contained in the bleaching composition, the activated oxidising agent being capable of reacting with the staining agent to at least partly discolour the staining agent. In the method of this invention use is made of a laser emitting laser energy of a wave length capable of inducing a photochemical generation of radicals of the oxidising agent, which radicals in turn are capable of reacting with the staining agent to form a compound that is free of a conjugated electron system capable of absorbing visible light.