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 ) .
Comparison of push-out bond strength of mineral trioxide aggregate and calcium enriched mixture cement as root end filling materials
Background : The purpose of this study was to compare the push-out bond strength of mineral trioxide aggregate ( MTA ) and calcium enriched mixture ( CEM ) as root end filling material s. Material s and Methods : A total of 40 root dentin slices ( 1 ± 0.2 mm ) were prepared from freshly extracted human maxillary central teeth and their lumens were enlarged to 1.3 mm . The slices were r and omly divided into two groups ( n = 20 ) . MTA and CEM cement were mixed according to manufacturer 's instruction and introduced into the lumens . The specimens were wrapped in pieces of wet gauze soaked in distilled water and incubated at 37 ° C for 3 days . The push-out bond strength was measured using a universal testing machine . The slices were then examined under a light microscope at ×10 magnification to determine the nature of bond failure . The data were analyzed using Mann-Whitney test ( P < 0.001 ) . Results : The mean push-out bond strength for CEM cement and MTA were 1.68 ± 0.9 and 5.94 ± 3.99 respectively . The difference was statistically significant ( P < 0.001 ) . The bond failure was predominantly of adhesive type in MTA group and cohesive type in CEM group . Conclusion : CEM cement showed significantly lower bond strength to the dentinal wall compared to MTA
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 ) .