However, the Nof EDM files even with 50% torsional preloading was significantly higher than unused CM files (<.05). Fatigue prestressing even at 75% had no negative effect on the torque and rotation angle of the EDM files. Moderate precycling (50%) of EDM files increased their torsional ...
The PathFile (size 13/0.02 and 16/0.02) instruments were operated using the same endomotor (X-SMART) at a speed of 300 rpm and 5 N·cm of torque. Irrigation with 5.25% NaOCl and 17% EDTA was carried out during the glide path enlargement and the preparation time was recorded ...
Results: The fatigue resistance of EDM instruments was higher than that of CM instruments (P<.05). The torque and angle of rotation at fracture of the files were similar. Torsional preloading lowered the N-f of EDM at 15% preloading (P<.05) and the N-f of CM at 50% preloading (P...