2021 Fiscal Year Final Research Report
Establish diagnostic criteria for awake bruxism
| Project/Area Number |
19K19102
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 57050:Prosthodontics-related
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| Research Institution | Meikai University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 覚醒時ブラキシズム / 筋電図 / カットオフ値 |
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| Outline of Final Research Achievements |
Awake bruxism has not yet reached consensus in many aspects such as diagnosis and assessment of therapeutic effects. Therefore, we examined the characteristics of EMG for awake bruxism. The ROC curve was obtained from the sensitivity and specificity. The muscle activity at the time of maximum biting (MVC: maximum voluntary contraction) was set to 100%, and the muscle activity was assessed as a relative value. The bruxism group and the control group were divided according to the presence or absence of clinical findings, and the cutoff value to distinguish them was calculated. As a result, the area under the ROC curve was 0.68 and the cutoff value was 3.1 times / h in the event with 20% MVC duration of 1s or longer. It was suggested that EMG is effective in assessment of awake bruxism.
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| Free Research Field |
歯科補綴学分野
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| Academic Significance and Societal Importance of the Research Achievements |
歯科臨床上大きな問題となっている日中のブラキシズム(歯ぎしり，くいしばり）は評価方法や治療効果の基準が明確には定義されていません．本研究ではブラキシズムの評価に有効とされる筋電図検査を利用して日中の筋活動を調査しました．その結果、日中のブラキシズムに対する評価の有効性が認められました．今後の目標として，臨床現場に応用し評価の可能性を拡大することにより社会に貢献するという点に本研究の社会的意義があります．
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