Abstract
The aim of this study will be to evaluate the effect of pre-brushing whitening mouthrinses in abrasive wear of tooth enamel. It will be prepared 80 specimens of bovine enamel with 3 mm in diameter and 2 mm thick. Initial profiles will be measured in contact profilometer. The specimens will be randomly assigned into 4 groups (n = 20) according to the type of bleaching mouthrinse applied, c…