| Presentation | 1995/9/29 Controllability of Temporomandibular Joint Loading by Coordinative Activities of Masticatory Muscles : A Two-Dimensional Static Analysis Ken-ichi ITOH, Toyohiko HAYASHI, Michio MIYAKAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Masticatory and biting forces applied to the teeth are known to generate compressive forces in the temporomandibular joint (TMJ), which is referred to as "the temporomandibular joint loading". Since excessive loading is believed to deteriorate TMJ functions, TMJ loading is considered to be controlled, to a certain extent, by the stomatognathic system. In an attempt to clarify this control mechanism, we analyzed the relationship between TMJ loading and the activities of the masticatory muscles. For this analysis, we employed a two-dimensional static jaw-model, which incorporates four muscles: 1) the masseter including the internal pterygoid; 2)the anterior portion of the temporalis; and 3) the lateral pterygoid, all muscles of which function principally during biting. A static equilibrium analysis clarified that TMJ loading can be minimized when the loading vector points at a certain direction, determined only by individual morphological factors. This kinetically optimum direction of TMJ loading fully corresponded to the anatomically optimum one. It should be noted that this optimum direction was absolutely independent to the activities of the lateral pterygoid and the direction of biting. Consequently, TMJ loading can be considered to be controllable by coordinative activities of the masseter and the anterior portion of the temporalis. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Temporomandibular joint load / masticatory muscle / static model / controllability of loading / computer simulation |
| Paper # | MBE95-68 |
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| Committee | MBE |
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| Conference Date | 1995/9/29(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Controllability of Temporomandibular Joint Loading by Coordinative Activities of Masticatory Muscles : A Two-Dimensional Static Analysis |
| Sub Title (in English) | |
| Keyword(1) | Temporomandibular joint load |
| Keyword(2) | masticatory muscle |
| Keyword(3) | static model |
| Keyword(4) | controllability of loading |
| Keyword(5) | computer simulation |
| 1st Author's Name | Ken-ichi ITOH |
| 1st Author's Affiliation | Graduate School of Science and Technology, Niigata University() |
| 2nd Author's Name | Toyohiko HAYASHI |
| 2nd Author's Affiliation | Graduate School of Science and Technology, Niigata University |
| 3rd Author's Name | Michio MIYAKAWA |
| 3rd Author's Affiliation | Department of Information Engineering, Faculty of Engineering, Niigata University |
| Date | 1995/9/29 |
| Paper # | MBE95-68 |
| Volume (vol) | vol.95 |
| Number (no) | 285 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |