Quantitative evaluation of the apically extruded debris from root canals prepared by single-file rotary and reciprocating file systems: An in vitro study

Multiple comparison between groups demonstrated that the mean weight of apically extruded debris in the HEDM group was significantly less compared to all other study groups, and the differences were statistically significant (<i>P</i> < 0.001). Under the condition of this study, all file systems caused apical debris extrusion. The mean apically extruded debris was significantly least in HEDM, followed by WOG, OneRECI and highest in the OS group.