HIGHLIGHTSPOBT in endodontic research predicts the clinical behavior of endodontic material s .
Introduction : There is limited literature on the impact of testing variables on the push‐out bond test ( POBT ) .
This review identified design s of the POBT used in the endodontic literature and aim ed to determine which experimental variables may influence the push‐out bond strength ( POBS ) .
Push-Out Bond Strength of Bioceramic Materials in a Synthetic Tissue Fluid
Objective : This study compared the push-out bond strength of EndoSequence Root Repair Material ( ERRM ) and Bioaggregate ( BA ) , new bioceramic material s , to that of mineral trioxide aggregate ( MTA ) after incubation in phosphate-buffered saline ( PBS ) , a synthetic tissue fluid , for either 1 week or 2 months . Material s and Methods : One-hundred and twenty root sections were filled with ProRoot MTA , BA , or ERRM . Each tested material was then r and omly divided into two subgroups ( n = 20 ) : root sections were immersed in PBS for 1 week or 2 months . The bond strengths were measured using a universal testing machine . After that , the failure modes were examined with stereomicroscopy and scanning electron microscopy ( SEM ) . The push-out data and failure mode categories were analyzed by two-way ANOVA and chi-square tests , respectively . Results : The bond strength of ERRM was significantly higher than that of BA and MTA at both incubation periods . No significant difference was found between the bond strength of MTA and BA at either 1 week or 2 months . Increasing the incubation time to 2 months result ed in a significant increase in bond strength of all the material s. The failure mode was mainly mixed for MTA and BA , but cohesive for ERRM at both incubation periods . Conclusion : ERRM had significantly higher bond strength to root canal walls compared to MTA and BA . Increasing the incubation time significantly improved the bond strength and bioactive reaction products of all material
HIGHLIGHTSPOBT in endodontic research predicts the clinical behavior of endodontic material s .
Introduction : There is limited literature on the impact of testing variables on the push‐out bond test ( POBT ) .
This review identified design s of the POBT used in the endodontic literature and aim ed to determine which experimental variables may influence the push‐out bond strength ( POBS ) .