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 ) .
A phosphate-buffered saline intracanal dressing improves the biomineralization ability of mineral trioxide aggregate apical plugs.
INTRODUCTION Recently , it was shown that the biomineralization process promoted by the interaction of mineral trioxide aggregate ( MTA ) with dentin in phosphate-buffered saline ( PBS ) positively influenced the push-out bond strength of the cement . This study investigated if the use of a PBS intracanal dressing promotes the biomineralization process of MTA apical plugs using an ex vivo apexification model . METHODS White MTA was introduced into single-rooted teeth with st and ardized artificially created open apices to form 5-mm-thick apical plugs . The specimens were r and omly divided into the following three groups of 10 sample s each : group 1 : the remaining canal space was filled with PBS as an intracanal dressing ; group 2 : the root segments were introduced in plastic vials containing floral foams with 20 mL of PBS ; and group 3 : the root segments were placed in the floral foams with 20 mL of PBS and a PBS intracanal dressing was used . After 2 months , the sample s were processed for scanning electron microscopic observations . Data were analyzed by using the Kruskall-Wallis test . RESULTS In group 1 , the formation of an interfacial layer ( IL ) with intratubular mineralization ( ITM ) was more evident at the cervical third ; however , no mineralization was revealed at the apical third . In group 2 , there was no IL and /or ITM formation at the cervical third , but sample s denoted IL and ITM formation at the apical third . Group 3 displayed the formation of IL and ITM at the different levels . CONCLUSION It was concluded that the use of a PBS intracanal dressing promotes the biomineralization process at the inner side of MTA apical plugs
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 ) .