Abstract
The present study aims to evaluate the color alteration, trans-enameland trans-dentinal cytotoxicity and diffusion of hydrogen peroxide (HP) on bovine enamel / dentin specimens, which are divided into 9 groups. The specimens of groups 2-9 will be pigmented with hemolysate blood. Groups 1 (no pigmentation) and 2 will be control groups, without blwaching treatment. The Groups 3 and 4 will …