Abstract
The aim of the study will be to evaluate the influence of cervical sealing on the chromatic alteration and diffusion of H2O2 in bovine teeth submitted to internal bleaching. For that, 80 bovine incisors will have their roots cut 3mm from the cementoenamel junction (CEJ) and the coronal opening will be performed. In the first phase of the experiment, 40 specimens will be pigmented with equ…