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Aim: To evaluate the amount of apically extruded debris after the preparation of root canals in extracted human single-rooted teeth using ProTaper Next and Mani Silk rotary systems. Materials and methods: A total of 40 freshly extracted human single-rooted teeth with mature apices and straight root canal were selected and similar length were instrumented with ProTaper Next and Mani Silk rotary systems. Debris and irrigant extruded during instrumentation were collected into preweighed Eppendorf tubes. The Eppendorf tubes were then stored in an incubator at 68°C for 5 days. The weight of the extruded debris was determined by subtracting the initial weight from the final weight. Statistical analysis: Data analysis was carried out using the Statistical Package for the Social Sciences (SPSS) version 20. Postweights were compared with an independent t test for 2 groups. Results: Both instruments were associated with apical debris extrusion. There was no significant difference between the ProTaper Next and Mani Silk instruments in terms of mean weight of apically extruded debris. Conclusion: There was no significant difference among the groups in terms of mean weight of apically extruded debris.

Apical Debris Extrusion during Root Canal Preparation with ProTaper Next and Mani Silk Rotary Systems: An in vitro Study