Stress analysis of the temporomandibular joint by finite element method.

Kimura, A.

doi:10.5794/jjoms.36.1180

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The magnitude of the load was 110 N for the deciduous dentition and 140 N for the early mixed dentition (Karibe et al, 1997;Ogata et al, 2001;Tanaka, 1993). The material constants of the bone were a Young's modulus of 10 GPa and a Poisson's ratio of 0.3 (Kimura, 1990;Tanaka, 1993).…”

Section: Methodsmentioning

confidence: 99%

“…Historically, the mechanical effects of stress on bone have been analyzed by finite element analysis of the long bones of the upper and lower extremities, most of which consist of thick cortical bone (Benjamin et al, 2004;Elise et al, 2003;Harun et al, 2003;Taylor et al, 2002;Wirtz et al, 2003). In finite element analysis, the cancellous bone was considered to be no more than bone tissues inside the cortical bone, and assuming that the cancellous bone is a mass, the material constant alone was obtained (Kimura, 1990). However, in the temporomandibular joint with a complicated structure, the cortical bone in the articular eminence is much thinner than that in the limbs bone, and when the cortical bone is stressed, the mechanical properties are markedly affected by the thickness and direction of the cancellous bone.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Morphological changes in the internal structure of the articular eminence of the temporal bone during growth from deciduous to early mixed dentition

Ichikawa¹,

Hara²,

Tamatsu³

et al. 2007

Journal of Biomechanics

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morphological changes in the internal structure of the articular eminence of the temporal bone during growth from deciduous to early mixed dentition

Ichikawa¹,

Hara²,

Tamatsu³

et al. 2007

Journal of Biomechanics

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“…In contrast, bovines are herbivorous and a grinding jaw movement with mesial and lateral motion is predominant [34], which would probably result in the concentration of greater compressive forces on the central region of the disc [13]. These differences in function and biomechanical environment might affect the phenotypic expression of ECM in the disc.…”

Section: Discussionmentioning

confidence: 99%

“…First, the TMJ facilitates complicated jaw movements, i.e., combination of rotation and translation [1]. Biomechanical studies have demonstrated that the TMJ is subjected to complicated compressive and tensile forces and that the forces within the TMJ are not evenly distributed [9,13,31]. Second, the TMJ has anatomically complicated structures, such as two bony and cartilaginous components, i.e., glenoid fossa of the temporal bone and mandibular condyle, TMJ disc, peripheral fibrous attachment and ligament [1].…”

Section: Introductionmentioning

confidence: 99%

An Immunohistochemical Study of the Localization of Types I, II and III Collagen in the Temporomandibular Joint of Growing Monkeys.

Hamaya

Takahashi

Sasano

et al. 2001

Acta Histochem. Cytochem

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We sought to immunohistochemically localize types I, II and III collagen in various regions of the temporomandibular joint (TMJ) in two female rhesus monkeys at different growth stages: juvenile and late-adolescence. In the condylar cartilage, staining for types I and III collagen was weak in the fibrous layer, intense in the pre-cartilaginous layer, and faint in the cartilaginous layer, whereas that for type II collagen was limited to the cartilaginous layer. The glenoid fossa showed moderate staining for type I collagen and weak staining for type II collagen, indicating that this tissue consists of chondroid bone, which is an intermediary between bone and cartilage. TMJ discs showed more intense staining for types I and III collagen in their periphery than in their centers. Staining for type II collagen was not detected throughout the disc. The posterior attachments showed rather weak staining for type I collagen and relatively intense staining for type III collagen. These results suggest that there are regional differences in the phenotypic expression of the three major collagen components in the growing monkey TMJ, which probably provide specific biomechanical resistance.

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Localization of types I, II and III collagen and glycosaminoglycans in the mandibular condyle of growing monkeys: an immunohistochemical study

Mizoguchi

Takahashi

Sasano

et al. 1997

Anatomy and Embryology

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In order to analyse the regional and age-related variations of primate condyles, immunohistochemical techniques were used to examine the localization of types I, II and III collagen and a variety of glycosaminoglycans in distinct anteroposterior regions of the mandibular condyle of two growing female rhesus monkeys (Macaca mulatta). In the juvenile monkey staining for types I and III collagen was weak in the fibrous tissue layer, intense in the pre-cartilaginous tissue layer and faint in the cartilaginous tissue layer; staining was significantly more intense in the posterosuperior and posterior regions than in the anterior region. Similarly, staining for cartilage-characteristic extracellular matrices, including type II collagen and keratan sulfate, was intense in the cartilaginous tissue layer of the posterior condyle. In contrast, in the late-adolescent monkey staining for the extracellular matrices was more intense in the anterior half of the condyle (i.e. from the anterior to the posterosuperior region) than in the posterior region, and most intense in the posterosuperior region. The results demonstrate that marked regional differences exist in the phenotypic expression of the extracellular matrices in the mandibular condyles of growing monkeys and that these differences vary between different developmental stages. The variations probably reflect the predominance of competing growth and articulatory functions in the mandibular condyles.

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Stress analysis of the temporomandibular joint by finite element method.

Cited by 5 publications

References 14 publications

Morphological changes in the internal structure of the articular eminence of the temporal bone during growth from deciduous to early mixed dentition

Morphological changes in the internal structure of the articular eminence of the temporal bone during growth from deciduous to early mixed dentition

An Immunohistochemical Study of the Localization of Types I, II and III Collagen in the Temporomandibular Joint of Growing Monkeys.

Localization of types I, II and III collagen and glycosaminoglycans in the mandibular condyle of growing monkeys: an immunohistochemical study

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