Fatigue Loading Effect in Custom-Made All-on-4 Implants System: A 3D Finite Elements Analysis

Darwich, Ayham; Alammar, A.; Heshmeh, Omar; Szávai, Szabolcs; Nazha, Hasan

doi:10.1016/j.irbm.2021.06.008

Cited by 8 publications

(10 citation statements)

References 19 publications

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“…Cyclic loading caused higher values of stresses and greater stress concentration in the components of all models compared with static loading. This result is compatible with finding of an earlier study, which concluded that maximum stresses in implants and surrounding bone under fatigue loading were higher than those caused by static loading [30]. It also corresponds to the fact of the fatigue phenomenon.…”

Section: Safety Factorssupporting

confidence: 92%

“…S-N curves of all structures were also taken from literature [9,[28][29][30][31][32]. S-N curves of the pulp and periodontal ligament were not found, and data of similar structures were applied.…”

Section: Materials' Proprieties and Meshingmentioning

confidence: 99%

“…It also provides a non-destructive method to study fatigue life and predict fatigue behavior of complex structures in contrast to conventional tests and clinical trials, which are time-consuming [20]. Reviewing the medical literature, it was found that fatigue life had been investigated using 3D numerical analysis in dental implants [30], intra-radicular posts [20], and in composite resin inlays [36], without being studied in onlay-restored teeth.…”

Section: Safety Factorsmentioning

confidence: 99%

“…The greater the safety factor, the less susceptible to failure the structure. This means that the structure could withstand more stresses before failure when its' safety factor is equal or above 1, while crucial values of safety factor (below 1) indicate that the structure tends to fail rapidly under stresses [20,30].…”

Section: Safety Factorsmentioning

confidence: 99%

See 3 more Smart Citations

Effect of onlay material and preparation design on fatigue behavior and stress distribution in molars: 3D-FEA

Darwich¹,

Aljareh²,

Kanout³

et al. 2023

jos

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Introduction: Onlays are conservative restorations for posterior teeth that cover one cusp or more. Objectives: The aim of this study was to evaluate fatigue behavior and stress distribution in mandibular molars with different onlays and preparation designs under static and cyclic conditions, using finite element analysis. Material and methods: A model of a mandibular molar was obtained from a CBCT image. Mesio-occluso-distal cavities were presented with conservative and extensive buccolingual widths of the occlusal cavity. Buccal and lingual cusps were reduced. Therefore, onlays that covered buccal cusps and onlays that covered all cusps designs were obtained. All onlays were produced from three materials: lithium disilicate ceramic (LDS), polymer-infiltrated ceramic network (PICN), and zirconia ceramic. Safety factor was calculated and stress distribution was analyzed according to von Mises and maximum principal stress theories under static and cyclic conditions. Results: Cyclic loading caused higher stresses than static loading. The safety factor of zirconia and LDS onlays was higher than 1, except for conservative preparation with all-cusp coverage. PICN showed the lowest values of safety factors and the highest stress concentration in the dental tissues, which was associated with the least stresses in onlays. LDS and zirconia ceramic onlays showed lower stress concentration in dental structures than PICN. Conclusions: Loading conditions affected the results of stress in all models. Zirconia ceramic could be a suitable choice to restore mandibular molars, while PICN onlay might be an inappropriate restoration in terms of safety factors and stress distribution in restored dental structures.

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Section: Safety Factorssupporting

confidence: 92%

Section: Materials' Proprieties and Meshingmentioning

confidence: 99%

Section: Safety Factorsmentioning

confidence: 99%

Section: Safety Factorsmentioning

confidence: 99%

See 2 more Smart Citations

Effect of onlay material and preparation design on fatigue behavior and stress distribution in molars: 3D-FEA

Darwich¹,

Aljareh²,

Kanout³

et al. 2023

jos

View full text Add to dashboard Cite

show abstract

“…In addition, stress acts as a measure to know the intensity of force that an object supports ( Franco-Silva and Ángeles-Maslucán, 2014 ). Another variable that can be evaluated using the FEM is the factor of safety (FOS), this is the ratio between the yield stress of the material and the maximum von Mises stress ( Herza et al, 2018 , Darwich et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Stress analysis and factor of safety in three dental implant systems by finite element analysis

Menacho-Mendoza

Cedamanos-Cuenca²,

Díaz-Suyo³

2022

The Saudi Dental Journal

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Failure assessment of braided ceramic matrix composite dovetail turbine blade under thermo-mechanical load

Dhimole,

Yu,

Cho

2024

J. Korean Ceram. Soc.

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Fatigue Loading Effect in Custom-Made All-on-4 Implants System: A 3D Finite Elements Analysis

Cited by 8 publications

References 19 publications

Effect of onlay material and preparation design on fatigue behavior and stress distribution in molars: 3D-FEA

Effect of onlay material and preparation design on fatigue behavior and stress distribution in molars: 3D-FEA

Stress analysis and factor of safety in three dental implant systems by finite element analysis

Failure assessment of braided ceramic matrix composite dovetail turbine blade under thermo-mechanical load

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