Gc Corporation

Kaisha Toyota Chuo Kenkyusho

Koyu Aoki

Yasunori Taga

Shoji Akahane

Takeshi Morikawa

Takeshi Ohwaki

Keisuke Ikushima

Shin Yamaguchi

Toshihiro Sekiguchi

The invention relates to a method for bleaching teeth in which a solution of a nitrogen-doped titanium oxide powder is contacted on a surface of the teeth and the surface of the teeth is irradiated to bleach the surface of the teeth-by activating a photocatalytic reaction.

Method for bleaching teeth and bleaching agent for teeth

To eliminate a defect in conventional dental bleaching agent, that light for activating titanium oxide hardly reaches down to the titanium oxide at the teeth surface to be bleached, a dental bleaching agent set consists of two components of which the first component is attached to teeth surface and irradiation of light is followed after the second component is contacted on the teeth surface, the first component consisting of an organic solvent, containing at least one of a titanium oxide, a nitrogen doped titanium oxide, and a titanium oxinitride having photocatalytic activities, and preferably one or more of a metal oxide, a metal salt, and a metal powder, a thickener and water, the second component consisting of a compound that produces hydrogen peroxide in water, a thickener and a carrier.

Dental bleaching agent kit and the method for bleaching teeth

Growing community of inventors

Aichi-gun, Japan

Koyu Aoki