| Project/Area Number |
05454557
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
矯正・小児・社会系歯学
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| Research Institution | Kyushu University |
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Principal Investigator |
NAKASIMA Akihiro KYUSHU UNIVIERSITY,PROFESSOR, 歯学部, 教授 (00037524)
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| Co-Investigator(Kenkyū-buntansha) |
TAMARI Kazuhiko KYUSHU UNVERSITY,Dentistry RESEARCH ASSOCIATE, 歯学部, 助手 (60037538)
一ノ瀬 元史 九州大学, 歯学部, 助手 (30150460)
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| Project Period (FY) |
1993 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1995: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1994: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1993: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | Occulusal Pressure / Temporomandibular joint disfunction / Pressure conductive rubber / 咬合面積 / 咬合力 |
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| Research Abstract |
The researches had developed a "computerized measurig system of occlusal pressure distribution", and they were about to improve this device to measure and evaluate the functional occlusion in patients with temporomandibular joint disfuction. However, and due to the fact that the Japanese company that had supplied the "pressure conductive rubber", a part of the sensor, has stopped its cooperation due to marketing reasons, and then the system had to be redesigned.
We used the newly redeveloped system, and we obtained the following :
1-We measured the occlusal pressure distribution in normal subjects "control" that were chosen from among the student of our faculty. As a result, we found that a correlation existed between the total pressure and the occlusal area. However, no difference was found when occlusal force of certain similar areas.
2-When the symmetry of the facial soft tissue was investigated on patients, who were diagnosed in our faculty to have temporomandibular joint disfuction, It was found that the inter-pupils line, the inter-nasofacial angles line were impaired more than in normal subjects. However, this didn't help in predicting the affected side.
3-The newly redesigned machine was employed on elementary school children, it was found that the larger the occlusal pressure was the more upward the occlusal plane was. However, no relation could be established between this phenomenon and between the temporomandibular joint disfuction.
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