| Project/Area Number |
21592443
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Prosthetic dentistry
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
UENO Toshiaki 東京医科歯科大学, 大学院・医歯学総合研究科, 准教授 (30292981)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Toshiyuki 東京医科歯科大学, 大学院・医歯学総合研究科, 助教 (80360923)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 転倒 / 高齢者 / 咬合 / アンケート / 床反力 / 電気刺激 / 外乱 / 姿勢 / 重心動揺 / 外乱刺激 |
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| Research Abstract |
In the present study, we assessed the relation between dental status and fall in a sample of 253 volunteers(105 men and 148 women) free-living adults and elderly people in Japan by a questionnaire survey. The mean group rate and number of people who had fallen during the past 3-year period were 24. 1% and 3. 36 times, respectively. Among those who had fallen, the proportion who had lost the occlusal supporting zone was 29. 7%, while the proportion who maintained the occlusal supporting zone was 21. 4%. Then, we also investigated the influence of change in dental occlusion on the stabilization of posture stance disturbed by electrical stimulation of unilateral lower limb in healthy 5 adults volunteers with dental splint occluded anterior teeth only and 5 healthy elderly people with denture. When the occlusal supporting zone was transiently lost by insertion of dental splint, both and maximum ground reaction force were increased. In the elderly people with dentures, maximum ground reaction forces in both anterior-posterior and medial-lateral directions with teeth clenching on wearing denture were smaller than that with teeth clenching on wearing no denture. The present results suggested that maintenance of dental occlusion throughout life would be possibly effective for not only preserving better the masticatory function but also preventing falls later in life.
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