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The effects of autoclave sterilization on the cyclic fatigue resistance of ProTaper Universal, ProTaper Next, and ProTaper Gold nickel-titanium instruments

  • Ozyurek, Taha (Department of Endodontics, Ondokuz Mayis University Faculty of Dentistry) ;
  • Yilmaz, Koray (Corum Oral and Dental Center) ;
  • Uslu, Gulsah (Department of Endodontics, Ondokuz Mayis University Faculty of Dentistry)
  • 투고 : 2017.06.05
  • 심사 : 2017.09.19
  • 발행 : 2017.11.08

초록

Objectives: It was aimed to compare the cyclic fatigue resistances of ProTaper Universal (PTU), ProTaper Next (PTN), and ProTaper Gold (PTG) and the effects of sterilization by autoclave on the cyclic fatigue life of nickel-titanium (NiTi) instruments. Materials and Methods: Eighty PTU, 80 PTN, and 80 PTG were included to the present study. Files were tested in a simulated canal. Each brand of the NiTi files were divided into 4 subgroups: group 1, as received condition; group 2, pre-sterilized instruments exposed to 10 times sterilization by autoclave; group 3, instruments tested were sterilized after being exposed to 25%, 50%, and 75% of the mean cycles to failure, then cycled fatigue test was performed; group 4, instruments exposed to the same experiment with group 3 without sterilization. The number of cycles to failure (NCF) was calculated. The data was statistically analyzed by using one-way analysis of variance and post hoc Tukey tests. Results: PTG showed significantly higher NCF than PTU and PTN in group 1 (p < 0.05). Sterilization significantly increased the NCF of PTN and PTG (p < 0.05) in group 2. PTN in group 3 had significantly higher cyclic fatigue resistance than PTN group 4 (p < 0.05). Also, significantly higher NCF was observed for PTG in group 2 than in groups 3 and 4 (p < 0.05). Conclusions: PTG instrument made of new gold alloy was more resistant to fatigue failure than PTN and PTU. Autoclaving increased the cyclic fatigue resistances of PTN and PTG.

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참고문헌

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피인용 문헌

  1. Effect of autoclave sterilization on cyclic fatigue and torsional fracture resistance of NiTi rotary instruments vol.108, pp.2, 2017, https://doi.org/10.1007/s10266-019-00453-3
  2. Novel Electronic Device to Quantify the Cyclic Fatigue Resistance of Endodontic Reciprocating Files after Using and Sterilization vol.10, pp.14, 2020, https://doi.org/10.3390/app10144962
  3. Effect of number of uses and sterilization on the instrumented area and resistance of reciprocating instruments vol.46, pp.2, 2017, https://doi.org/10.5395/rde.2021.46.e28
  4. Effects of repeated sterilization cycles on the surface alterations of ProTaper Next, TF Adaptive, HyFlex CM, and 2Shape instruments vol.15, pp.2, 2017, https://doi.org/10.34172/joddd.2021.013