Setting time of influence on the physical behavior seven sealers

Objectives: The aim of this study was to evaluate the influence of curing time on physical (push-out test) of seven sealers: Apexit Plus, Royal Seal, Endo Rez, Roeko Seal, AH Plus, Endomethasone, and bioceramic cement iRoot SP.
Methods: The aim of this study was to evaluate the influence of curing time on physical properties (push-out test) of seven sealers: Apexit Plus, Royal Seal, Endo Rez, Roeko Seal, AH Plus, Endomethasone N, and bioceramic cement iRoot SP. To push-out test was used one hundred and forty single-rooted teeth which had the crowns removed. The root canals were prepared biomechanically with the rotary system Mtwo (VDW GmbH, München, Alemanha) until to series number 702 to file 25 mm (25-40). Throughout the biomechanical preparation, the canals were irrigated with 2 ml of sodium hypochlorite. The specimens were sectioned in slices of 2 mm in cervical, middle and apical. The specimens were fixed to a metal base in the cutting machine LabCut 1010 (EXTEC Technologies Inc. Enfield, CT, USA) and sectioned perpendicular to the long axis of the root, with diamond WFR BLDE fourth album "X 0:12" X 1/2 "(EXTEC-Erios). The test was performed in a universal testing machine EMIC DL-1000 model (equipment and systems Ltda, São José dos Pinhais, Paraná, Brazil) at speed of 1 mm/min and 50 kgf load cell. The specimens were evaluated after 15 days and 1 year of hardening of cements.Data were analyzed by Kruskal-Wallis and Dunn test (p = 0.05).
Results: Roeko Seal, IRooot SP and EndoRez had lower bond strength in the apical, middle and cervical thirds in both the 15-day and 1 year analysis. Apexit Plus, Endomethasone N, Real Seal and AH plus had a satisfactory bond strength after 1 year in all thirds.
Conclusions: It is conclude that AH plus and Real Seal were the sealer with good values of bond strength in all third, keeping as the material of choice for endodontic therapy.