Finite element analysis of the human mastication cycle

Commisso, Maria S.; Martínez-Reina, Javier; Ojeda, J.; Mayo, J.

doi:10.1016/j.jmbbm.2014.09.022

Cited by 59 publications

(58 citation statements)

References 45 publications

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“…In the FEA of the musculoskeletal system, the insertion area of the muscles involved in the mastication process, as well as the values and vector directions of the muscle loads (Commisso et al, 2015), must be considered. Some researches (Koolstra et al, 1988;Koolstra & van Eijden, 1992;Gröning et al, 2012) used the cross-sectional area of each muscle.…”

Section: Resultsmentioning

confidence: 99%

Insertion Area in the Mandible Masticatory Muscles for use in Finite Element Analyses

et al. 2015

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SUMMARY:To validate the virtual finite element analysis (FEA) results, it is needed that the mathematical models take into account the insertion area. Thus, the aim of this study was to measure the insertion area of masticatory muscles in the mandible in human cadavers to be used in FEA. The insertion area of the masticatory mandible's muscles was measured on both sides of fifty human cadavers throughout digital photos and software. The insertion area of the masseter was 7.47(±0.41) cm 2 , the temporal (inner portion) was 3.05(±0.13) cm 2 , the temporal (outer portion) was 2.25(±0.28) cm 2 , the medial pterygoid was 2.2(±0.23) cm 2 , and the lateral pterygoid was 0.8(±0.05) cm 2 . In conclusion, there is enough data to be used for the finite element analysis.

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Section: Resultsmentioning

confidence: 99%

Insertion Area in the Mandible Masticatory Muscles for use in Finite Element Analyses

et al. 2015

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“…Anatomically, between the condyle and the articular fossa of the temporomandibular joint (TMJ) there is the articular disc, a fibrocartilage that facilitates movement between the mandible and temporal bone (1). The main function of the articular disc is to absorb and distribute the load effect over a larger contact area to prevent damage to the articulating surfaces (1).…”

Section: Introductionmentioning

confidence: 99%

“…The main function of the articular disc is to absorb and distribute the load effect over a larger contact area to prevent damage to the articulating surfaces (1). This is important to maintain the stomatognathic system healthy, preventing articular disc alterations that may lead to temporomandibular disorders (TMD) (1).…”

Section: Introductionmentioning

confidence: 99%

“…In finite element analysis (FEA) of the TMJ studies have characterized the articular disc as isotropic elastic material, porohyperelastic, hyperelastic and viscoelastic (10)(11)(12)(13) Experimental tests to measure stresses and strains in the articular disc during loading are very difficult to conduct, due to the risk of biological damage to the joint (1). The FEA is nowadays the most appropriate method for investigating stress and strain distributions in the TMJ during mastication (1,(9)(10)(11)(12)(13)(14). Some studies simulated physiological mandibular movements or simulated prolonged teeth clenching (9,12).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Occlusal Splints on the Stress Distribution on the Temporomandibular Joint Disc

et al. 2017

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Conservative approach, including occlusal splint therapy, is the first option to treat temporomandibular disorders (TMD), because of its reversibility. The present study analyzed the effect of the articular disc position and occlusal splints use on the stress distribution on this disc. A two-dimensional (2D) finite element (FE) model of the temporomandibular joint with the articular disc at its physiologic position was constructed based on cone-beam computed tomography. Three other FE models were created changing the disc position, according to occlusal splint use and anterior disc displacement condition. Structural stress distribution analysis was performed using Marc-Mentat package. The equivalent von Mises stress was used to compare the study factor. Higher stress concentration was observed on the intermediate to anterior zone of the disc, with maximum values over 2MPa. No relevant difference was verified on the stress distribution and magnitude comparing disc positions and occlusal splint use. However, there was stress reduction arising from the use of the occlusal splints in cases of anterior disc displacement. In conclusion, based on the generated FE models and established boundary conditions, the stress increased at the intermediate zone of the TMJ disc during physiological mandible closure. The stress magnitude was similar in all tested situations

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“…Commisso et al . , for instance, reproduced chewing motions by using a comprehensive model which did not include a deformable bolus. Koolstra and van Eijden used a model which combined FEM with rigid body analysis to focus on the behaviour of the joints.…”

Section: Introductionmentioning

confidence: 99%

Realistic kinetic loading of the jaw system during single chewing cycles: a finite element study

Choy

Lenz

Schweizerhof

et al. 2017

J of Oral Rehabilitation

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Although knowledge of short-range kinetic interactions between antagonistic teeth during mastication is of essential importance for ensuring interference-free fixed dental reconstructions, little information is available. In this study, the forces on and displacements of the teeth during kinetic molar biting simulating the power stroke of a chewing cycle were investigated by use of a finite-element model that included all the essential components of the human masticatory system, including an elastic food bolus. We hypothesised that the model can approximate the loading characteristics of the dentition found in previous experimental studies. The simulation was a transient analysis, that is, it considered the dynamic behaviour of the jaw. In particular, the reaction forces on the teeth and joints arose from contact, rather than nodal forces or constraints. To compute displacements of the teeth, the periodontal ligament (PDL) was modelled by use of an Ogden material model calibrated on the basis of results obtained in previous experiments. During the initial holding phase of the power stroke, bite forces were aligned with the roots of the molars until substantial deformation of the bolus occurred. The forces tilted the molars in the bucco-lingual and mesio-distal directions, but as the intrusive force increased the teeth returned to their initial configuration. The Ogden material model used for the PDL enabled accurate prediction of the displacements observed in experimental tests. In conclusion, the comprehensive kinetic finite element model reproduced the kinematic and loading characteristics of previous experimental investigations.

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Finite element analysis of the human mastication cycle

Cited by 59 publications

References 45 publications

Insertion Area in the Mandible Masticatory Muscles for use in Finite Element Analyses

Insertion Area in the Mandible Masticatory Muscles for use in Finite Element Analyses

Effect of Occlusal Splints on the Stress Distribution on the Temporomandibular Joint Disc

Realistic kinetic loading of the jaw system during single chewing cycles: a finite element study

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