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 mineral trioxide aggregate in the presence of alkaline pH.
INTRODUCTION The aim of this study was to evaluate the effect of a range of alkaline pH values on the push-out strength of white mineral trioxide aggregate ( WMTA ) . METHODS The st and ardized lumens of root slices prepared from extracted single-rooted human teeth were filled with white ProRoot MTA . The specimens were then r and omly divided into 4 groups ( n = 20 ) and wrapped in pieces of gauze soaked in synthetic tissue fluid ( STF ) ( pH , 7.4 ) and STF buffered in potassium hydroxide at pH values of 8.4 , 9.4 , or 10.4 . The sample s were incubated for 3 days at 37 ° C . The push-out bond strengths were then measured by using a universal testing machine . Failure modes after the push-out test were examined under a light microscope at ×40 magnification . The data were analyzed by using one-way analysis of variance and Tukey post hoc tests . RESULTS The greatest ( 9.46 ± 0.63 MPa ) and lowest ( 5.68 ± 0.83 MPa ) mean push-out bond strengths were observed after exposure to pH values of 8.4 and 10.4 , respectively . There were significant differences between the groups ( P = .001 ) . The bond failure was adhesive for all experimental groups . CONCLUSIONS Push-out bond strength of WMTA could be influenced by different alkaline pH values
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 ) .