Cyclic Fatigue Resistance of Nickel–Titanium Rotary Instruments after Simulated Clinical Use

Table 3

Pairwise multiple comparison result for AF F-one group.

AF F-one group		Mean difference (I–J)	Sig.	95% confidence interval
				Lower bound	Upper bound
New	One use	2210.950^*	0.000	1982.838	4105.862
	Two use	2105.600^*	0.001	1026.864	3184.336
	Three use	2003.750^*	0.001	932.312	3075.188
One use	Two use	−105.750^*	0.000	−1296.485	−581.015
	Three use	−207.600^*	0.000	−1332.950	−748.250
Two use	Three use	−101.850^*	0.898	−518.540	314.840

*= mean difference of number of cycles to fracture between two group of instruments.
- = number of cycles to fracture in this group was increased.