APA
Roda Casanova, Victor & Pérez González, Antonio & Zubizarreta Macho, Álvaro & Faus Matoses, Vicente .Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life.
ISO 690
Roda Casanova, Victor & Pérez González, Antonio & Zubizarreta Macho, Álvaro & Faus Matoses, Vicente. Fatigue Analysis of NiTi Rotary Endodontic Files through Finite Element Simulation: Effect of Root Canal Geometry on Fatigue Life.
https://hdl.handle.net/20.500.12080/26429
Resumen:
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.