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1. EP1333798 - METHOD AND COMPOSITION FOR DENTAL BLEACHING

Office
European Patent Office
Application Number 00960239
Application Date 14.09.2000
Publication Number 1333798
Publication Date 13.08.2003
Publication Kind A1
IPC
A61C 19/06
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
19Dental auxiliary appliances
06Implements for therapeutic treatment
A61K 8/19
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
19containing inorganic ingredients
A61N 5/06
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
06using light
A61Q 11/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
QSPECIFIC USE OF COSMETICS OR SIMILAR TOILET PREPARATIONS
11Preparations for care of the teeth, of the oral cavity or of dentures, e.g. dentifrices or toothpastes; Mouth rinses
CPC
A61C 19/066
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
19Dental auxiliary appliances
06Implements for therapeutic treatment
063Medicament applicators for teeth or gums, e.g. treatment with fluorides
066Bleaching devices; Whitening agent applicators for teeth, e.g. trays or strips
A61K 8/19
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
19containing inorganic ingredients
A61K 8/22
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
19containing inorganic ingredients
22Peroxides; Oxygen; Ozone
A61K 8/42
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
30containing organic compounds
40containing nitrogen
42Amides
A61K 2800/81
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
2800Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
80Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
81Preparation or application process involves irradiation
A61N 2005/0606
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
06using light
0601Apparatus for use inside the body
0603for treatment of body cavities
0606Mouth
Applicants HIGH TECH LASER
Inventors VERHEYEN PETER
Designated States
Priority Data 0000107 14.09.2000 BE
Title
(DE) VERFAHREN UND MITTEL ZUM DENTALBLEICHEN
(EN) METHOD AND COMPOSITION FOR DENTAL BLEACHING
(FR) PROCEDE ET COMPOSITION POUR LE BLANCHIMENT DES DENTS
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.

(FR)
La présente invention concerne un procédé qui permet de blanchir des dents dont la couleur a été altérée par un agent colorant. Le procédé comprend les étapes suivantes: on recouvre une zone d'au moins une dent devant être blanchie avec une composition de blanchiment pour les dents et on insole la zone recouverte avec un faisceau d'énergie laser pendant une durée prédéterminée pour activer un agent oxydant contenu dans la composition de blanchiment, l'agent oxydant activé pouvant réagir avec l'agent colorant pour décolorer au moins partiellement l'agent colorant. Dans le procédé selon l'invention, on utilise un laser émettant une énergie d'une longueur d'onde capable d'induire une production photochimique de radicaux de l'agent oxydant, ces radicaux pouvant à leur tour réagir avec l'agent colorant pour former un composé qui est dépourvu d'un système à électrons conjugués capable d'absorber la lumière visible.