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 ) .
The effects of Various Endodontic Irrigants on the Push-out Bond Strength of Calcium-Enriched Mixture Cement and Mineral Trioxide Aggregate.
INTRODUCTION The aim of this in vitro study was to evaluate the effect of various irrigants on the push-out bond strength of calcium-enriched mixture ( CEM ) cement and mineral trioxide aggregate ( MTA ) . METHODS AND MATERIAL S A total of 140 dentin disks with a thickness of 1.5±0.2 mm and lumen size of 1.3 mm , were r and omly divided into 12 groups ( n=10 ) and 4 control groups ( n=5 ) . The lumen of disks in groups 1 , 2 , 3 , 7 , 8 , 9 were filled with CEM and groups 4 , 5 , 6 , 10 , 11 , 12 were filled with MTA . Control groups were filled with CEM and MTA . Specimens were incubated at 37 ° C for one day in groups 1 to 6 and seven days in groups 7 to 12 . After incubation the sample s were divided into three subgroups ( n=10 ) that were either immersed for 30 min in 5.5 % sodium hypochlorite ( NaOCl ) , 2 % chlorhexidine ( CHX ) or saline solution .  The push-out bond strength values were measured by using a universal testing machine . The nature of the failures were determined by light microscope . Data was analyzed using the three-way ANOVA to evaluate the effect of material type , different irrigants and time intervals . Post hoc Tukey 's test was used for two-by-two comparison of the groups . RESULTS CEM cement significantly showed a higher push-out bond strength in comparison with MTA ( P=0.001 ) . The elapse of time significantly increased the bond strength ( P=0.001 ) . There was no significant difference between the irrigants used in this study ( P=0.441 ) . Bond failure was predominantly of mixed type in MTA and of cohesive type in CEM sample s. CONCLUSION Based on this study , endodontic irrigants did not influence the push-out bond strength of MTA and CEM cement
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 ) .