| Project/Area Number |
25462999
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Prosthodontics/ Dental materials science and
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TUBOI Masahiro 広島大学, 病院, 歯科診療医 (20614382)
OOKURA Tomohisa 広島大学, 病院, 歯科診療医 (20711360)
KUREMOTO Kouichi 広島大学, 医歯薬保健学研究院, 助教 (90319583)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 口腔習癖 / 精神的ストレス / ポータブル筋電計 / ブラキシズム / 顎関節症 / ストレス |
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| Outline of Final Research Achievements |
We objectively evaluated jaw muscle activity during sleep by a portable EMG device, emotional stress by a psychological test, TMD symptom at getting up by a questionnaire method, digitized the awareness of the sleep bruxism (SB) and TMD symptoms such as the pain of the jaw and fatigue, jaw movement disorder and trismus, the sounds of temporomandibular joint. By analyzing these parameters, we performed the path analysis applied regression analysis. As a result, the emotional stress increased the night jaw muscle activity including the SB, and the increased jaw muscle activity caused not only the TMD symptom at getting up, but also TMD symptom of the jaw pain or fatigue, and it was suggested that these pain and fatigue of the jaw caused jaw movement disorder and the trismus.
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