Estimation of Masticatory Forces for Patient-Specific Stress Analysis of the Human Mandible

Koseki, Michihiko; Inou, Norio; Maki, Koutaro

doi:10.1299/kikaic.74.1857

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Intensity and direction of the muscular actions were considered as constant during the occlusion even if, in reality, muscle activation varies in relation to the occlusion point: the reduction of the muscle activation level when the occlusion point get closer to the condyles (that act as pivots in the final phase of the masticatory process) is related to the corresponding decrease in the occlusion load momentum. Moreover it would be better to provide an estimation of masticatory loads by patient-specific analysis [16].…”

Section: Problem Descriptionmentioning

confidence: 99%

FEM and BEM Analysis of a Human Mandible with Added Temporomandibular Joints

Citarella

Armentani²,

Caputo³

et al. 2012

TOMEJ

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Mathematical modelling of human mandible and its temporomandibular joints (TMJs) is one of the most important steps for developing a powerful forecasting tool to analyse the stress/strain behaviour of a human masticatory system under occlusal loads. In this work the structural behaviour of a mandible with articular discs, undergoing a unilateral occlusion, is numerically analysed by means of both Finite Element Method (FEM) and Boundary Element Method (BEM). The mandible is considered as completely edentulous and its anisotropic and non-homogeneous bone material behaviour is modelled. The material behaviour of the articular discs was assumed to be either elastic or hyper-elastic. The loads applied to the mandible are related to the active muscle groups during a unilateral occlusion. The results of FEM and BEM analyses are presented mainly in terms of stress distribution on the mandible and on the articular discs. Due to the uncertainty in the determination of the biological parameters, a sensitivity analysis is provided, which demonstrates the impact of the variation of articular disc stiffness and TMJ friction coefficient on the mandible stress peaks and on the occlusal loads (for a given intensity of muscle loads). Moreover a comparison between the effectiveness of the BEM and FEM numerical approaches on this kind of problem is provided

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Section: Problem Descriptionmentioning

confidence: 99%

FEM and BEM Analysis of a Human Mandible with Added Temporomandibular Joints

Citarella

Armentani²,

Caputo³

et al. 2012

TOMEJ

View full text Add to dashboard Cite

show abstract

“…The disk geometric reconstruction from C.T. scan was not feasible so it was made from reference to literature data [2,4], but, in order to improve the accuracy of results that are specific to the single patient, it would be better to reconstruct the numerical model of the articular disk by using a Magnetic Resonance and to adapt the estimation of masticatory forces for patient-specific analysis [14].…”

Section: Cad Modelmentioning

confidence: 99%

Fem Sensitivity Analyses on the Stress Levels in a Human Mandible with a Varying ATM Modelling Complexity

Armentani¹,

Caputo²,

Citarella

2010

TOMEJ

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In this work the structural behaviour of a mandible considering a unilateral occlusion is numerically analysed by means of the Finite Element Method (FEM). The mandible, considered as completely edentolous, is modelled together with its articular disks, whose material behaviour is assumed as elastic or hyper-elastic. The mandible model is obtained by computer tomography scans. The anisotropic and non homogeneous bone material behaviour is considered and the loads applied to the mandible are those related to the active muscle groups during unilateral occlusion. The results of FEM analysis are presented mainly in terms of stress distribution on the mandible. Because of uncertainty on the determination of the adopted parameters, a sensitivity analysis is provided, showing the way in which the variation of articular disc stiffness and temporomandibular joint friction coefficient has an impact on the mandible stress peak and occlusal force.

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歯科矯正治療における力学刺激と骨リモデリング

Ono

2023

Folia Pharmacol. Jpn.

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Estimation of Masticatory Forces for Patient-Specific Stress Analysis of the Human Mandible

Cited by 3 publications

References 12 publications

FEM and BEM Analysis of a Human Mandible with Added Temporomandibular Joints

FEM and BEM Analysis of a Human Mandible with Added Temporomandibular Joints

Fem Sensitivity Analyses on the Stress Levels in a Human Mandible with a Varying ATM Modelling Complexity

歯科矯正治療における力学刺激と骨リモデリング

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