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Objectives: To compare the cyclic fatigue resistances of One Curve (OC), Hyflex EDM (HEDM), WaveOne Gold (WOG), Reciproc Blue (RPC Blue), and nickel-titanium rotary files at intra-canal temperature (35°C). Materials and Methods: Twenty OC (25/.06), 20 HEDM (25/.08), 20 WOG (25/.07) and 20 RPC Blue (25/.08) files were tested for cyclic fatigue at intra-canal temperature (35°C). All the instruments were rotated in artificial which were made of stainless steel with an 60° angle of curvature and a radii of curvatures of 5 mm until fracture occurred, and the time to fracture was recorded in seconds using a digital chronometer and the number of cycles to fracture (NCF) for each file was calculated. The Kruskal-Wallis test was performed to statistically analyze the data by using SPSS 21.0 software. The statistical significance level was set at p .05). Conclusion: Within the limitations of the present in-vitro study, HEDM instrument resisted static cyclic fatigue significantly more than RPC Blue, WOG and OC instruments.

cumhuriyet üniversitesi diş hekimliği fakültesi dergisi/cumhuriyet dental journal

COMPARISON OF CYCLIC FATIGUE RESISTANCE OF ONE CURVE, HYFLEX EDM, WAVEONE GOLD AND RECIPROC BLUE NICKELTITANIUM ROTARY FILES AT INTRA-CANAL TEMPERATURE