Abstract
Repair materials and endodontic sealers should not promote tooth discoloration. The aim of this study was to evaluate the color changes promoted by different biomaterials and endodontic sealers based on calcium silicate, and it is divided into three sub-projects. The subproject 1: will be evaluate the effect of different radiopacifiers (BIO2, ZrO2, Nb2O5 and CaWO4), associated with trical…