This study aims to shed light upon bleaching process, study the
influence of each substance during the process and the best time for
bleaching in addition to clear up the effect of water.
since teeth whitening is very important procedure in dental office. the effect
of peroxides on enamel tissue is of great interest in research. The aim of this in vitro study was to perform
a qualitative analysis of the human enamel microhardness af
ter the application of high concentration of
hydrogen peroxide (38%)with and without light activation, using Vickers microhardness tests.
