2018 Fiscal Year Final Research Report
Effects of a contingent vibratory stimulus delivered by an intra-oral device on sleep bruxism
| Project/Area Number |
16K20514
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Prosthodontics/ Dental materials science and
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| Research Institution | Showa University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | 睡眠時ブラキシズム / バイオフィードバック / 口腔内装置 / 咀嚼筋筋活動 / 振動 |
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| Outline of Final Research Achievements |
Although sleep bruxism is one of the most important clinical problems in dental practice, there is no definitive method for controlling it. This pilot study evaluated the effects of contingent vibratory feedback stimuli using an occlusal splint for inhibition of sleep bruxism.
The number of SB episodes (times/hour), the total SB duration (seconds/hour), the mean duration of SB episodes (seconds/episode), and the micro-arousal index (times/hour) were scored for each time period (with and without vibration). The number of SB episodes tended to decrease with the vibration stimuli, and the decrease in the total SB duration was statistically significant (14.3 ± 9.5 vs. 26.0 ± 20.0, p =0.03). No substantial change was found in terms of the micro-arousal index.
These study results suggested that the SB inhibitory system employing a vibratory stimulus might be able to suppress the total SB duration without disturbing sleep.
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| Free Research Field |
睡眠歯科
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で開発した振動刺激を用いた睡眠時ブラキシズ抑制装置は，刺激により睡眠に影響を及ぼすことなく，単位時間あたりの睡眠時ブラキシズム持続時間を抑制したことから，睡眠時ブラキシズムのマネジメントに有効な方法であることが示唆された．これまで広く使用されていた通常の口腔内装置等のみでは症状が改善しなかった患者の顎口腔系を保護する方法として，今後多くの患者を救うことのできるマネジメント法となるものと考えられる．
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