The Impact of Multiple Autoclave Cycles on the Surface Roughness of Thermally Treated Nickel-Titanium Endodontic Files

Table 3

SR parameters recorded under ×450 and ×1,000 magnification ().

SR parameter	SEM magnification	Mean	Std. deviation	Sig.
Rq	×450	15.7372	5.1478	0.54
	×1,000	14.3978	5.2471
Ra	×450	11.5681	3.9665	0.57
	×1,000	10.4723	4.0930
Rz	×450	53.1684	18.1849	0.04
	×1,000	73.8068	25.0038