Table 1 – Mean Cyclic Fatigue (Time in seconds), Torque (Ncm), and Angle of Rotation (º) of the Instruments tested.
Different upper letters on columns indicate statiscal differences among groups after ANOVA one-way and post-hoc of Tukey (P < 0,05).
FIGURES
Figure 1 - Scanning electron microscopy images of the fractured surfaces of separate fragments after torsional testing (first row: A, a = Flat File 25.04; second row: B, b = ProDesign Logic2 25.03; bottom row: C, c = Prodesign Logic2 25.05). The left column shows images with the circular boxes indicating concentric abrasion marks at × 200 magnification; the right column shows concentric abrasion marks at × 1000 magnification; and the skewed dimples near the center of rotation are typical features of torsional failure.
Figure 2 - Scanning electron microscopy images of the fractured surfaces of separated fragments of cyclic fatigue testing (first row: A, a = Flat File 25.04; second row: B, b = ProDesign Logic2 25.03; bottom row: C, c = Prodesign Logic2 25.05). The crack origins are identified by circular boxes. The images show numerous dimples spread on the fractured surfaces, which constitute a typical feature of ductile fracture.