1 Application of titanium dioxide nanotubes to tooth whitening

Abstract

It has been reported that a titanium oxide nanotube (TNT) has a specific tube structure and diversity of the titanium crystals, as well as superior photocatalytic capacity and a physicochemical function. We did basic research on TNT. We measured its number of radicals and its changes in methylene-blue (MB) solution to evaluate its photocatalytic capacity. Also, we examined its effect on tooth whitening. We found that the TNT produced radicals such as TiO_2, reduced the concentration of MB, and bleached stained apatite pellets when combined with a low concentration H_2O_2.