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 ) .
Effect of ultrasonic tip and root-end filling material on bond strength
Objectives The objective of this study was to evaluate the bond strength of three root-end filling material s ( MTAA – MTA Angelus , MTAS – experimental MTA Sealer , and ZOE- zinc oxide and eugenol cement )  in retro grade preparations performed with different ultrasonic tips ( CVD , Trinity , and Satelec ) . Material s and method Ninety 2-mm root sections from single-rooted human teeth were used . The retro grade cavities were prepared by using the ultrasonic tips , coupled to a device for position st and ardization . The specimens were r and omly divided into nine groups : CVD MTAA ; CVD MTAS ; CVD ZOE ; Trinity MTAA ; Trinity MTAS ; Trinity ZOE ; Satelec MTAA ; Satelec MTAS ; Satelec ZOE . Each resin disc/dentin/root-end filling material was placed in the machine to perform the push-out test . The specimens were examined in a stereomicroscope to evaluate the type of failure . Data were su bmi tted to statistical analysis using ANOVA and Tukey tests ( α = 0.05 ) . Results The highest bond strength was observed for the CVD tip irrespective of the material used ( P < 0.05 ) . There was no significant difference for the Trinity TU-18 diamond and S12 Satelec tips ( P > 0.05 ) . MTAA and MTAS showed highest bond strength . The most common type of failure was adhesion between the filling material and dentin wall , except for ZOE , where mixed failure was predominant . Conclusions The CVD tip favored higher bond strength of the root-end filling material s. MTA Angelus and experimental MTAS presented bond strength to dentin prepared with ultrasonic tips . Clinical relevance Root-end preparation with the CVD tip positively influences the bond strength of root-end filling material s. MTA Angelus and experimental MTAS present bond strength to be used as root-end filling 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 ) .