Purpose: Maintaining the original root canal configuration and minimalizing iatrogenic errors are crucial to mechanical instrumentation. Thus, the aim of this study is the comparison of the cyclic fatigue resistance of newly developed EndoArt Blue and EndoArt Gold rotary files with ProTaper Gold and ProTaper Universal rotary files at body temperature.
Methods: Twelve instruments of each EndoArt Blue, EndoArt Gold, ProTaper Gold, and ProTaper Universal rotary file systems were included. Files were rotated in the artificial canals have a 60° angle and a 5-mm radius of curvature until fracture occurred. The time to fracture (Ttf) was recorded when a fracture was detected visually and/or audibly. The lengths of the fractured fragments (FL) were also measured. The data were statistically analysed at the 5% significance level.
Results: EndoArt Blue files had the statistically highest fatigue resistance and ProTaper Universal files had the lowest (p=0.000). There was also a statistically significant difference between EndoArt Gold and ProTaper Gold file systems (p=0.001). There was no statistically significant difference in terms of FL among the groups (p>0.05).
Conclusion: EndoArt Blue file system had a significantly higher cyclic fatigue resistance than EndoArt Gold, ProTaper Gold, and ProTaper Universal file systems.