Resistance to Cyclic Fatigue of Nickel-Titanium Files Immersed in Sodium Hypochlorite at Body Temperature

Table 1

Comparison of mean number of cycles to fracture (NCF) with post hoc Bonferroni comparisons.

Number of cycles to fracture (NCF)	Mean	Standard deviation	95% confidence interval for mean		F
			Lb	Ub
PTG-control^a,e	752.00	165.37	660.42	843.58	33.152
PTG-1-min NaOCl^a,b	651.00	165.64	559.27	742.73
PTG-5-min NaOCl^b	490.33	120.65	423.52	557.14
OC-control^c	1325.00	334.70	1139.65	1510.35
OC-1-min NaOCl^d	1038.33	204.12	925.30	1151.37
OC-5-min NaOCl^d,e	962.33	145.80	881.59	1043.07

Calculated using one-way ANOVA. ^a,b,c,d,eDifferences in superscript indicate significant () differences between groups.