Recently, a MTA-based sealer (MTA Fillapex) has been proposed as an endodontic sealer, which consists of MTA, salicylate resin, natural resin, bismuth oxide and silica. This material has attracted the researchers’ attention due to its excellent biocompatibility, bioactivity and osteoconductivity.8A study showed that this sealer has suitable physiochemical properties such as good radiopacity, flow and alkaline pH.8 Ferreira et al concluded that MTA-based sealers reduce the leakage into the root canal walls over time.9