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10.3390/jcm10235692
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Article

Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life

by
Victor Roda-Casanova
1,
Antonio Pérez-González
1,
Álvaro Zubizarreta-Macho
2,3,* and
Vicente Faus-Matoses
4
1
Department of Mechanical Engineering and Construction, Universitat Jaume I, 12071 Castelló de la Plana, Spain
2
Department of Dentistry, Alfonso X el Sabio University, 28691 Madrid, Spain
3
Department of Orthodontics, University of Salamanca, 37008 Salamanca, Spain
4
Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain
*
Author to whom correspondence should be addressed.
J. Clin. Med. 2021, 10(23), 5692; https://doi.org/10.3390/jcm10235692
Submission received: 5 November 2021 / Revised: 26 November 2021 / Accepted: 29 November 2021 / Published: 3 December 2021
(This article belongs to the Special Issue The State of the Art in Endodontics)
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Abstract

This article describes a numerical procedure for estimating the fatigue life of NiTi endodontic rotary files. An enhanced finite element model reproducing the interaction of the endodontic file rotating inside the root canal was developed, which includes important phenomena that allowed increasing the degree of realism of the simulation. A method based on the critical plane approach was proposed for extracting significant strain results from finite element analysis, which were used in combination with the Coffin–Manson relation to predict the fatigue life of the NiTi rotary files. The proposed procedure is illustrated with several numerical examples in which different combinations of endodontic rotary files and root canal geometries were investigated. By using these analyses, the effect of the radius of curvature and the angle of curvature of the root canal on the fatigue life of the rotary files was analysed. The results confirm the significant influence of the root canal geometry on the fatigue life of the NiTi rotary files and reveal the higher importance of the radius of curvature with respect to the angle of curvature of the root canal.
Keywords: endodontic rotary files; finite element analysis; fatigue analysis endodontic rotary files; finite element analysis; fatigue analysis

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MDPI and ACS Style

Roda-Casanova, V.; Pérez-González, A.; Zubizarreta-Macho, Á.; Faus-Matoses, V. Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life. J. Clin. Med. 2021, 10, 5692. https://doi.org/10.3390/jcm10235692

AMA Style

Roda-Casanova V, Pérez-González A, Zubizarreta-Macho Á, Faus-Matoses V. Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life. Journal of Clinical Medicine. 2021; 10(23):5692. https://doi.org/10.3390/jcm10235692

Chicago/Turabian Style

Roda-Casanova, Victor, Antonio Pérez-González, Álvaro Zubizarreta-Macho, and Vicente Faus-Matoses. 2021. "Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life" Journal of Clinical Medicine 10, no. 23: 5692. https://doi.org/10.3390/jcm10235692

APA Style

Roda-Casanova, V., Pérez-González, A., Zubizarreta-Macho, Á., & Faus-Matoses, V. (2021). Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life. Journal of Clinical Medicine, 10(23), 5692. https://doi.org/10.3390/jcm10235692

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