Influence of dental restorations and mastication loadings on dentine fatigue behaviour: Image-based modelling approach

Journal of Dentistry
Arso M VukicevicNenad Filipovic

Abstract

The aim of this study was to use Finite Element Analysis (FEA) to estimate the influence of various mastication loads and different tooth treatments (composite restoration and endodontic treatment) on dentine fatigue. The analysis of fatigue behaviour of human dentine in intact and composite restored teeth with root-canal-treatment using FEA and fatigue theory was performed. Dentine fatigue behaviour was analysed in three virtual models: intact, composite-restored and endodontically-treated tooth. Volumetric change during the polymerization of composite was modelled by thermal expansion in a heat transfer analysis. Low and high shrinkage stresses were obtained by varying the linear shrinkage of composite. Mastication forces were applied occlusally with the load of 100, 150 and 200N. Assuming one million cycles, Fatigue Failure Index (FFI) was determined using Goodman's criterion while residual fatigue lifetime assessment was performed using Paris-power law. The analysis of the Goodman diagram gave both maximal allowed crack size and maximal number of cycles for the given stress ratio. The size of cracks was measured on virtual models. For the given conditions, fatigue-failure is not likely to happen neither in the intact tooth ...Continue Reading

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Citations

May 8, 2018·Journal of Prosthodontic Research·Ebrahim MaghamiJames Kit-Hon Tsoi
Jun 20, 2020·Clinical and Experimental Dental Research·Yeo-Kyeong Lee, Youn-Sic Chun
Apr 11, 2018·Medical & Biological Engineering & Computing·Ivana KantardžićLarisa Blažić
Dec 31, 2020·Clinical, Cosmetic and Investigational Dentistry·Noor Al MortadiMohammad Al Janaideh
Feb 20, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Arso M VukicevicAlejandro F Frangi
Apr 15, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Ehsan HomaeiKhalil Farhangdoost
Dec 30, 2021·Computer Methods in Biomechanics and Biomedical Engineering·Gulhan YildirimEvrim Eligüzeloglu Dalkiliç

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