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 .
An ex-vivo comparative study of root-end marginal adaptation using grey mineral trioxide aggregate, white mineral trioxide aggregate, and Portland cement under scanning electron microscopy
Context : Where nonsurgical endodontic intervention is not possible , or it will not solve the problem , surgical endodontic treatment must be considered . A major cause of surgical endodontic failures is an inadequate apical seal , so the use of the suitable substance as root-end filling material that prevents egress of potential contaminants into periapical tissue is very critical . Aims : The aim of the present ex-vivo study was to compare and evaluate the three root-end filling material s of mineral trioxide aggregate ( MTA ) family ( white MTA [ WMTA ] , grey MTA [ GMTA ] and Portl and cement [ PC ] ) for their marginal adaptation at the root-end dentinal wall using scanning electron microscopy ( SEM ) . Material s and Methods : Sixty human single-rooted teeth were decoronated , instrumented , and obturated with Gutta-percha .  After the root-end resection and apical cavity preparation , the teeth were r and omly divided into three-experimental groups ( each containing 20 teeth ) and each group was filled with their respective experimental material s. After longitudinal sectioning of root , SEM examination was done to determine the overall gap between retro grade material s and cavity walls in terms of length and width of the gap ( maximum ) at the interface . Descriptive statistical analysis was performed to calculate the means with corresponding st and ard errors , median and ranges along with an analysis of variance and Tukey 's test . Results : The least overall gap was observed in GMTA followed by PC and WMTA . While after statistically analyzing the various data obtained from different groups , there was no significant difference among these three groups in terms of marginal adaptation . Conclusion : GMTA showed the best overall adaptation to root dentinal wall compared to PC and WMTA . Being biocompatible and cheaper , the PC may be an alternative but not a substitute for MTA
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 .