DOI: 10.36347/sjds.2019.v06i11.001

Pages: 474-478

Introduction: The purpose of this in vitro study was to assess the amount of apically extruded debris using rotary and reciprocating nickel-titanium instrumentation systems. Method: Forty five human mandibular single rooted premolars were randomly assigned to 3 groups (n = 15). The root canals were instrumented according to the manufacturers’ instructions using the reciprocating single-file systems WaveOne Gold (Dentsply Maillefer), rotary single file system OneShape (Micro Mega, France) and a full-sequence Twisted File system (Sybron Endo, CA). The apically extruded debris was collected in preweighted glass vials using the Myers and Montgomery method. The amount of extruded debris was assessed with an electronic balance. The significance level was set at P = .05. Results: All the specimens were associated with apical extrusion of debris. The reciprocating single-file WaveOne Gold system produced significantly more debris compared with single file OneShape rotary system (P < .05). No statistically significant difference was obtained between OneShape and Twisted file system. Conclusions: Single file rotary instrumentation was associated with less debris extrusion compared with the use of reciprocating single-file system.