Abstract
This study aims to verify trans-enamel and trans-dentinal 35% hydrogen peroxide penetration (HP) applied in different substrate conditions. Thus, 60 bovine incisors will be used in disc-shaped specimen involving enamel and dentin. The teeth will be divided into 3 groups (n = 20): GI-sound enamel, GII-teeth showing visible cracks in enamel, GIII- enamel will be submitted to microabrasion. …