On the basis of available evidence , MTA presented good marginal adaptation to dentine walls .
This systematic review analysed the literature comparing marginal adaptation of mineral trioxide aggregate ( MTA ) with other filling material s in root-end cavities .
Occlusal loading of EBA and MTA root-end fillings in a computer-controlled masticator: a scanning electron microscopic study.
AIM The aim of this investigation was to assess the marginal adaptation of Super-EBA ( EBA ) and Pro Root MTA ( MTA ) root-end fillings and the occurrence of microcracks in resected root-ends of extracted teeth before and after occlusal loading for a five-year equivalent period in a computer-controlled masticator . METHODOLOGY Twenty-four molar teeth were root-filled using lateral condensation and their root-ends resected . Root-end cavities were prepared and either EBA or MTA root-end fillings were placed . All surgical procedures were completed in vitro under an operating microscope . Replicas taken of the root-end fillings and resected root-ends were examined using an SEM before and after they were subjected to in vitro chewing cycles in a computer-controlled chewing simulator for the equivalent of 5 years . Marginal adaptation and integrity of the two root-end filling material s were evaluated and the presence of microcracks recorded . RESULTS Before loading , a continuous margin was observed with 99.4 + /- 2.4 % of EBA and 99.2 + /- 1.6 % of MTA root-end fillings . After loading , the percentage of continuous margin decreased to 93.1 + /- 6.6 % and 98.9 + /- 3.2 % for EBA and MTA , respectively . After occlusal loading , 39.5 % of the EBA root-end fillings were overfilled , whilst 52.6 % of the MTA root-end fillings were underfilled . In total , 12.5 % of the resected root-end surfaces showed microcracking before loading and 25 % after occlusal loading . CONCLUSIONS Both EBA and MTA displayed excellent marginal adaptation before masticatory loading . After loading , the amount of continuous margin for both root-end filling material s decreased slightly but was still high
On the basis of available evidence , MTA presented good marginal adaptation to dentine walls .
This systematic review analysed the literature comparing marginal adaptation of mineral trioxide aggregate ( MTA ) with other filling material s in root-end cavities .