Presentation 2000/3/14
Functions of Posterior Portion of the Temporalis Muscle in the Control of Temporomandibular-Joint Loading : A Model Analysis Using Empirical Data of Bilateral Biting
Makoto ABE, Toyohiko HAYASHI, Ken-ichi ITOH, Raul MEDINA,
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Abstract(in English) Masticatory force and bite force applied to the teeth are known to generate compressive forces in the temporomandibular joint (TMJ). Such joint force is referred to as "TMJ loading". In this paper, functions of the posterior portion of the temporalis muscle were analyzed from a view point of TMJ loading, through estimating the loading by applying subject's data of bite force and electromyography into a 2-D static model of te jaws with a rigid-body-spring model of TMJ. Consequently, we obtained the following results:1) the activation of the posterior portion of the temporalis muscle was verified to reduce TMJ loading;2) when biting at the molars, TMJ loading was not necessarily minimized, while the compressive force distribution in the articular disk seemed acceptable with respect to load-bearing structures of the disk;3) when biting at the premolars, TMJ loading was minimized approximately.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) TMJ loading / bite force / static analysis / a rigid-body-spring model / temporalis muscle
Paper # MBE99-156
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Conference Information
Committee MBE
Conference Date 2000/3/14(1days)
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Paper Information
Registration To ME and Bio Cybernetics (MBE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Functions of Posterior Portion of the Temporalis Muscle in the Control of Temporomandibular-Joint Loading : A Model Analysis Using Empirical Data of Bilateral Biting
Sub Title (in English)
Keyword(1) TMJ loading
Keyword(2) bite force
Keyword(3) static analysis
Keyword(4) a rigid-body-spring model
Keyword(5) temporalis muscle
1st Author's Name Makoto ABE
1st Author's Affiliation Graduat School of Science and Technology, Niigata University()
2nd Author's Name Toyohiko HAYASHI
2nd Author's Affiliation Departmento of Biocybernetics, Faculty of Engineering, Niigata University
3rd Author's Name Ken-ichi ITOH
3rd Author's Affiliation Faculty of Engineering, Niigata Institute of Technology
4th Author's Name Raul MEDINA
4th Author's Affiliation First Department of prosthetic Dentistry, School of Dentistry, Niigata University
Date 2000/3/14
Paper # MBE99-156
Volume (vol) vol.99
Number (no) 687
Page pp.pp.-
#Pages 6
Date of Issue