apical sealing ability of bioceramic paste and mineral trioxide aggregate retrofillings: a dye leakage study

introduction: this study compared the apical sealing ability of a bioceramic based root canal repair filling material (iroot fs) with mineral trioxide aggregate (mta). methods and materials: forty single-canal teeth were prepared and randomly divided into two experimental groups ( n =18) and two control groups ( n =2). teeth in experimental groups were retrofilled with either mta or iroot fs. after setting of the retrofillings, all roots were exposed to 0.2% rhodamine b solution for 48 h and were then washed for 12 h before longitudinal sectioning. the extent of dye penetration was measured under fluorescence microscope. results: the mean leakage values in mta and iroot fs samples were 35.63 and 35.15 µm, respectively. there was no significant differences between the two materials in this regard ( p =0.584). conclusion: according to dye leakage results, iroot fs had similar apical sealing ability to mta and might be considered as a promising root-end filling material.