Difference in the extent of debris extrusion between instrumentation with ProTaper® and ProTaper Next®: An experimental laboratory study

During chemomechanical preparation, debris extrusion could trigger an inflammatory response and delay periapical healing. Reportedly, while instrumentation with ProTaper® causes significant debris extrusion, no data are available for instrumentation with ProTaper Next®. This study aimed to determine and compare amounts of debris extruded in the instrumentation with ProTaper® and ProTaper Next®. In total, 60 premolars were evenly distributed into two groups as follows: ProTaper® group and ProTaper Next® group. Then, debris extruded during instrumentation was collected in a bottle and the difference between the weight of the bottle before and after instrumentation was considered as the amount of debris extruded. The amount of debris extruded with instrumentation with ProTaper® was significantly higher than that with ProTaper Next® (t-test, p < 0.005). Our experimental study demonstrates that the extent of debris extrusion with ProTaper Next® was less than that with ProTaper®.