Assessment of the amount of apically extruded debris using three different reciprocating single endodontic file systems: An ex vivo study.

Introduction: This study aimed to assess the amount of apical extrusion of debris after root canal instrumentation with three different reciprocating single endodontic file systems including R-motion, Edge One Fire, and Reciproc Blue. Methods: Forty-five human upper first molars that were extracted for periodontal reason included in the study and randomly assigned among three study groups (n= 15). Reciproc Blue, R-motion, and Edge One files were used to instrument the palatal root. Amount of apical extrusion of debris was assessed using the empty tube model of Myers and Montgomery. Data were analyzed blindly via one-way ANOVA and the Tukey post hoc test using R. Results: There was statistically significant difference among study groups (p < 0 .001). Post hoc test showed nonsignificant difference among Edge One and Reciproc Blue groups (p=0.106). The difference between R-motion and Reciproc Blue was marginally significant (p=0.055). Conclusion: Within the limitations of this study, R-Motion showed the most amount of apically extruded debris followed by Reciproc Blue and Edge One. [ABSTRACT FROM AUTHOR]