Abstract
Introduction: Previous studies of our research group indicate that hydrogen peroxide (H2O2) contained in the whitening gel can generate effects on the pulp tissue, which are not completely understood (Processo FAPESP nº 2013/25429-0, Cintra et al. 2013, Cintra et al. 2015, Cintra et al. 2015a). Among these effects are inflammation of mild to severe, protein denaturation, decreased cell me…