Discolored teeth bleaching system

摘要

A system for bleaching discolored teeth is provided. This system has a function of irradiating light emitted from a light-emitting section (9) to the surface of teeth to which a chemical agent including titanium dioxide and hydrogen peroxide has been applied, the irradiation energy of wavelength 380 to 420nm of the light emitted from the light-emitting section is at least 37mW/cm<2> and the ratio of irradiation energy of wavelength 380 to 420nm with respect to the irradiation energy of wavelength 200 to 800nm is at least 36% at this light-emitting section (9), and whereby it is possible to obtain high bleaching effect of the teeth, to reduce the heat applied to the teeth to a low level (no more than 40 DEG C) and to reduce emission of ultraviolet light that has an adverse effect on the human body to a low level. <IMAGE>