AIM: To evaluate and compare the push-out bond strength of MTA Fillapex (Angelus, Londrina, Brazil) and iRoot SP (Innovative BioCeramix Inc., Vancouver, Canada) to the dentine walls of root canals. @entity3798 Plus (Dentsply DeTrey, Konstaz, Germany) and MTA (Angelus, Londrina, Brazil) were used as reference materials. METHODOLOGY: Sixty extracted @entity1 single rooted teeth were selected. After standardized canal preparation and irrigation, the canals were dried with paper points and filled with one of four sealer: @entity3798 Plus, iRoot SP, MTA and MTA Fillapex. Roots were sectioned, and push-out tests were performed. The values of bond strength were analyzed using the Kruskal-Wallis test. Mann-Whitney with Bonferroni correction was used to isolate the differences. The alpha-type error was set at 0.05 for the analyses. RESULTS: All specimens had measurable adhesion to root dentine and no premature failure occurred. There were significant differences among materials (P = 0.000). MTA-filled specimens had higher push-out bond strength values (P = 0.000). @entity3798 Plus had significantly higher bond strength than both Fillapex and iRoot SP (P = 0.000). Both Fillapex and iRoot SP had the lowest push-out bond strength among all experimental groups (P = 0.000). No difference occurred between the two @entity4799 -based root canal sealers (P = 0.265). CONCLUSION: The adhesion to root dentine associated with newer @entity4799 -based sealers was compromised even when well-monitored laboratory conditions were used. This article is protected by copyright. All rights reserved.

Suboptimal push-out bond strengths of XXXX -based sealers.

@entity1 :: ('9606', 'Species') :: ['human'] @entity3798 :: ('MESH:D007039', 'Disease') :: ['AH'] @entity4799 :: ('MESH:C031293', 'Chemical') :: ['calcium silicate']
@entity4799 :: (MESH:C031293,Chemical) :: ['calcium silicate']
