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 ) .
Bond strength of mineral trioxide aggregate to root dentin after exposure to different irrigation solutions.
AIM The aim of the study was to evaluate the regional push-out bond strength of mineral trioxide aggregate ( MTA ) after exposure to sodium hypochlorite ( NaOCl ) , ethylenediaminetetraacetic ( EDTA ) , and peracetic acid ( PAA ) irrigation solutions . MATERIAL S AND METHODS 1-mm-thick longitudinal slabs of root dentin were obtained from freshly extracted human canine teeth ( n = 80 ) . Simulated root perforation defects , 1 mm in diameter , were prepared in the coronal , middle , and apical thirds of radicular dentin . Mineral trioxide aggregate was placed into the cavities , and the specimens were stored for 1 week at 37 ° C . Thereafter , the specimens were r and omly divided into four groups ( n = 20 ) according to the irrigation solution applied over the repair sites : Group 1 - 10 ml of 5.25 % NaOCl for 10 min ; Group 2 - 10 ml of 5.25 % NaOCl for 10 min , followed by 5 ml 17 % EDTA for 5 min ; Group 3 - 10 ml of 5.25 % NaOCl for 10 min , followed by application of 5 ml 1 % PAA for 5 min ; and Group 4-no irrigation . Push-out test was performed at a crosshead speed of 1 mm/min . Debonding values were compared statistically using two-way analysis of variance and Tukey tests ( P < 0.05 ) . RESULTS The push-out bond strength of MTA was not affected by the type of irrigation solution or location of the perforation defects ( both P < 0.05 ) . Stereomicroscopic inspection of the sample s showed that the bond failure was predominantly adhesive . CONCLUSION Exposure of repaired root perforations to 5.25 % NaOCl , 17 % EDTA , or 1 % PAA does not alter the dislocation resistance of MTA at different locations of root dentin
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 ) .