Abstract
The purpose of this study will to evaluate the effect of proanthocyanidin (PA) on the bond strength to enamel and dentin of a restorative system after dental bleaching. One hundred blocks of enamel/dentin will be obtained from bovine incisors. After planning and polishing the same, half (50) will be used to evaluate the adhesion to enamel and the other half in dentin. The 50 blocks of eac…