Different Techniques for Removing Debris From Endodontic Files

Abstract

Aim The aim of the present study was to assess the efficacy of chemical and mechanical techniques for removing debris from files during root canal treatment. Material and method This study was approved by the ethics committee of Biruni University (2023/80-10). Fourty extracted human single-rooted teeth were used. For determining apical debris extrusion, a model similar to Myers and Montgomery was used during the mechanical preparation. The teeth were randomly divided into four groups as three experimental and one control (n=10). The experimental groups for removal of debris from files during the preparation were: Sodium hypochlorite (NaOCl) impregnated sponge, saline impregnated sponge and dry sponge. The mechanical preparation was performed with step-back technique by using K-files apically and coronally to size 30 and 60, respectively. The teeth were irrigated with 2.5 ml distillated water on each file change and finally removed from the Eppendorf tube. Then, all the tubes were incubated at 105 °C for 12 hours to allow the evaporation of moisture before weighing the dry debris. The debris that was extruded apically was collected in preweighted tubes and compared by an electronic balance. Kolmogorov-Smirnov and ANOVA tests were used for statistical analysis. Results Control group was found significantly higher than other groups regarding the extrusion of apical debris (p<0.001). There were no significant difference between the other groups (p>0.05). Conclusion Control group was associated with more debris extrusion in comparison with the other methods. Therefore, one of the other three methods can be preferred as debris removal technique.

Keywords

• Debris extrusion
• Endodontic treatment
• Mechanical preparation
• Saline
• Sodium hypochlorite

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