Tabriz University of Medical Sciences Journal of Dental Research, Dental Clinics, Dental Prospects 2008-210X 13 1 2019 04 24 Comparison of the cyclic fatigue resistance of ProGlider, PathGlider and One G path-finding instruments 57 60 10.15171/joddd.2019.009 EN Damla Özsu Kırıcı https://orcid.org/0000-0001-8391-1034 Ertuğrul Karataş Ahmet Demirhan Uygun Ezgi Doğanay Yıldız Kezban Meltem Çolak Hakan Arslan Journal Article 10.15171/joddd.2019.009 2018 09 07 2018 12 21 Background. The aim of the present study was to compare the cyclic fatigue resistance of novel nickel titanium rotary pathfinding instruments. Methods. Twenty instruments were selected for each file system. A simulated stainless steel root canal, with a 90° angle of curvature and a curvature radius of 3 mm, was used for cyclic fatigue test of the ProGlider (#16, progressive taper: 0.02‒ 0.085), PathGlider (#15, taper: .03), and One G (#14, taper: .03) instruments. Statistical analyses were performed with oneway ANOVA (P=0.05). Post hoc Tukey tests were used to determine any statistically significant differences between the groups. Results. The ProGlider instruments exhibited significantly more cyclic fatigue resistance than both PathGlider and One G instruments (P<0.001). One G instruments had significantly more resistance to fracture than PathGlider instruments (P<0.05). Conclusion. ProGlider instruments had better cyclic fatigue resistance than PathGlider and One G instruments.