Silva-Neto R, et al. – Physicians designed this study to assess the wear of root wall surfaces, the bond strength of sealers to dentine and the demineralization around filling material after the canals were exposed to acid challenge. They observed that sealers were not able to prevent degradation of the adhesive interface and dentine. It was noted that AH Plus and MTA Fillapex had the superior bond strength to dentine and less intense demineralization around the root filling.