. 2018 Apr 23;43(2):e25. doi: 10.5395/rde.2018.43.e25

Table 1. Cyclic fatigue, torque, and angle of rotation of the instruments tested.

Instrument	Cyclic fatigue (NCF)	Torque (N·cm)	Angle of rotation (°)
M3 Rotary 20/0.04	564 ± 2^a	0.53 ± 0.02^a	295 ± 1^a
M3 Pro Gold 20/0.04	961 ± 2^b	0.56 ± 0.01^a	494 ± 2^b
M3 Rotary 25/0.04	452 ± 2^c	0.71 ± 0.02^b	392 ± 2^c
M3 Pro Gold 25/0.04	836 ± 2^d	0.75 ± 0.01^b	596 ± 1^d

Data were shown with means ± standard deviations. Different superscript letters in the same column indicate statistically significant differences among groups (p < 0.05).

NCF, number of cycles to failure.