Effect of NaOCl solution on the cyclic fatigue resistance of traditional and heat-treated file systems

Aim: To compare the cyclic fatigue resistance at distilled water and %5.25 NaOCl of immersed ProTaper Gold (Dentsply Sirona,Ballaigues, Switzerland) and ProTaper Universal (Dentsply Sirona, Ballaigues, Switzerland) file systems.Material and Methods: The ProTaper Gold F2 (25.06v taper) and ProTaper Universal F2 (25.06v taper) file systems were immersedin distilled water andNaOCl for 5 minutes. After immersion process files were rotated at artificial canal with 60O curvature and a5-mm radius until fracture occurred. Time to fracture and fractured lengths were recorded. Data were analyzed statistically usingindependent t-tests. Statistical significance was set at P

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