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 ) .
Comparative evaluation of push-out bond strength of ProRoot MTA, bioaggregate and biodentine.
OBJECTIVE To evaluate the push-out bond strength of Biodentine ( BD ) in comparison with two available calcium silicate based material s , bioaggregate ( BA ) and ProRoot MTA ( WMTA ) . MATERIAL S AND METHODS One hundred and twenty-three Root dentin slices of freshly extracted single Rooted human teeth were r and omly divided into three groups ( n = 41 ) according to the used test material : WMTA , BA , BD . After canal space preparation , the filling material s were placed inside the lumen of the slices . After 72 hours , the maximum force applied to material s at the time of dislodgement was recorded and slices were then examined under a stereomicroscope at ×40 magnification to determine the nature of bond failure . Analysis of variance ( ANOVA ) test was used to compare means of push-out bond strength . Post-hoc test was then accomplished for multiple comparisons . Chi-square test was used to determine if there is significant association between the type of material and type of failure . RESULTS The mean push-out bond strength ± st and ard deviation in MPa values of WMTA , BA and BD were 23.26 ± 5.49 , 9.57 ± 3.45 , 21.86 ± 6.9 , respectively . There was no significant difference between the means of WMTA and BD ( p = 0.566 ) , but the mean of BA was significantly lower than those of WMTA and BD ( p = 0.000 ) . Under stereomicroscope , WMTA and BA showed a majority of mixed type of failure than cohesive failure , while BD showed the opposite . No adhesive failure was observed in any specimen . CONCLUSION The findings of the present study imply that the force needed for BD displacement is similar to WMTA and significantly higher than the force required to displace BA
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 ) .