2 results about "Bleaching tooth" patented technology

There is herein described a teeth whitening strip or film. In particular, the present invention relates to a dissolvable or substantially dissolvable hydrogen peroxide (H2O2) teeth whitening strip or film comprising a concentration of hydrogen peroxide (H2O2) at or above 10 wt. % of the strip or film. There is also described a process for the manufacture of a dissolvable or substantially dissolvable tooth whitening strip or film along with the method of using a strip or film comprising a concentration of hydrogen peroxide (H2O2) at or above 10 wt. % of the strip or film to whiten and / or bleach teeth.

The application discloses a method and device for bleaching teeth, the method is: (1) applying a whitening agent containing hydrogen peroxide to the surface of teeth; (2) activating the whitening agent by using a composite activation source; wherein the composite activation source comprises superimposed applied halogen light and ultrasonic waves, the halogen light has an illuminance of 170000 lux-290000 lux and a wavelength of 400-650 nm; the center frequency of the ultrasonic waves is 40+ / -1 KHZ. The device has a composite activation source emitting part, which is mainly composed of an LED lamp, a halogen lamp and an ultrasonic wave generator. The application can accelerate the external diffusion rate of hydrogen peroxide through tooth enamel, effectively shorten the bleaching time, improve the comfort of patients in tooth whitening treatment and has a good whitening effect.