Do Different Glide-Path-Files Affect the Apical Debris Extrusion of Waveone-Gold?

Objectives: The aim of this in-vitro study was to compare the amount of apically extruded debris after using different glide path files before preparing curved root canals with WaveOne Gold single file reciprocating system.
Methods: Sixty extracted mandibular first molar teeth with curved mesial roots were selected for this study. Mesial roots of the teeth were removed from cement-enamel junction and embedded into polyvinyl siloxane impression material. CBCT was used to evaluate the curvature of mesial root canals. Specimens were randomly divided into 6 experimental groups (n=10): G1: G files+WaveOne Gold, G2: One-G+WaveOne Gold, G3: ProGlider+WaveOne Gold, G4: Pathfile+WaveOne Gold; G5: K-file+WaveOne Gold, G6: WaveOne Gold without glide path file. Roots were attached to pre-weighed eppendorf tubes. All instruments were used according to manufacturers’ instructions. During root canal preparation a total of 8 ml distilled water was used for each specimen. Apically extruded debris was collected in eppendorf tubes. After the completion of root canal preparation eppendorf tubes were removed from specimens and stored in an incubator at 68 °C for 5 days. Eppendorf tubes were weighed after evaporation to calculate the amount of extruded debris. The data was statistically analyzed with One-way Anova and Post-doc Tukey HSD tests. (P=0.05)
Results: Statistically significant difference was observed between the OneG and K-File groups. OneG group was associated with significantly less debris extrusion than the K-file group. There was no statistical significant difference between K-files and G files, ProGlider, Pathfile, Wave-one Gold without glide path, and also there was no statistical significant difference between OneG and G files, ProGlider, Pathfile, Wave-one Gold without glide path.
Conclusions: Under the conditions of this in-vitro study all rotary path file systems were associated with similar apical debris extrusion before preparing root canals with WaveOne Gold single file reciprocating system. K- file system caused more apically extruded debris than OneG file.