Evaluation of cyclic fatigue resistance of modern Nickel-Titanium rotary instruments with continuous rotation


Published: 30 November 2017
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Authors

  • Massimo Amato Department of Medicine and Surgery, University of Salerno, Salerno; Medical Sciences and Stomatology Department, School of Dentistry, University of Messina, Messina, Italy.
  • Giuseppe Pantaleo Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples; Medical Sciences and Stomatology Department, School of Dentistry, University of Messina, Messina, Italy.
  • Dina Abdellatif University of Alexandria; Medical Sciences and Stomatology Department, School of Dentistry, University of Messina, Messina, Italy.
  • Andrea Blasi Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples; Medical Sciences and Stomatology Department, School of Dentistry, University of Messina, Messina, Italy.
  • Roberto Lo Giudice University of Alexandria, Egypt; Medical Sciences and Stomatology Department, School of Dentistry, University of Messina, Messina, Italy.
  • Alfredo Iandolo Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples; Medical Sciences and Stomatology Department, School of Dentistry, University of Messina, Messina, Italy.

Aim: The aim of present study was to compare cyclic fatigue resistance of three modern Ni-Ti instruments used with continuous rotation. Materials and methods: For this study 3 groups of rotating instruments with continuous rotation (HyFlex EDM, Twisted File Adaptive, Revo S SU) have been used, each group consisted of 20 files. The various groups were subjected to cyclic fatigue testing through an artificial metal device. A statistical analysis with Kruskal-Wallis test and Mann-Whitney test was performed. Results: There were statistically significant differences between the three groups. The HyFlex EDM instruments have a fracture resistance slightly higher than the Twisted file and far higher than Revo S SU. Conclusions: Modern Ni-Ti alloys increase resistance of the rotating instruments to cyclic fatigue.


Amato, M., Pantaleo, G., Abdellatif, D., Blasi, A., Lo Giudice, R., & Iandolo, A. (2017). Evaluation of cyclic fatigue resistance of modern Nickel-Titanium rotary instruments with continuous rotation. Giornale Italiano Di Endodonzia, 31(2), 78–82. https://doi.org/10.32067/gie.2017.31.02.03

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