Table 1. Number of cycles to fracture (NCF), bending resistance, and surface roughness average (Ra), and fractured segment lengths.

Group	NCF		Bending resistance (N)	Ra (nm)	Segment length (mm)
	Single curvature	Double curvature			Single curvature	Double curvature
EdgeEvolve	3,871.80 ± 33.91Aa	569.10 ± 11.55Ab	0.13 ± 0.01A	27.93 ± 4.30A	5.43 ± 0.21Aa	2.56 ± 0.23Ab
ProTaper Gold	1,036.40 ± 59.62Ba	482.40 ± 13.05Bb	0.28 ± 0.08B	90.36 ± 3.57B	4.80 ± 0.86Aa	2.54 ± 0.74Ab

Different uppercase superscripts indicate statistically significant differences between the files.

Different lowercase superscripts indicate statistically significant differences between single- and double curvature canals.