Abstract
The main objective of this study is to evaluate the effects of incorporating manganese oxide (MnO2) into a commercial carbamide peroxide (CP) gel on the esthetic efficacy and cytotoxicity of at-home bleaching therapy (HBT). Standardized enamel/dentin discs will be stained and then subjected to HBT for 15 days (2 hours/day), using a 22%CP containing or not MnO2, establishing the following …