Abstract
The aim of this study will to evaluate the effect of proanthocyanidin-rich (PA) extracts on the bond strength to enamel and dentin of a restorative system after dental bleaching. Eighty blocks of enamel/dentin will be obtained from bovine incisors. After planning and polishing the same, half (40) will be used to evaluate the adhesion to enamel and the other half in dentin. The 40 blocks o…