2022 Fiscal Year Final Research Report
ucidation of the Mechanism of Sleep Braxism Suppression Effect by Vibration Stimulation Applying EEG Evaluation
| Project/Area Number |
20K18643
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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 | Showa University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 睡眠時ブラキシズム / バイオフィードバック / スプリント / 振動刺激 |
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| Outline of Final Research Achievements |
Sleep bruxism(SB) is commonly managed with oral appliances(OAs), although vibratory biofeedback stimulation has also been investigated. We elucidated the effect of vibration feedback stimulation via an OA on SB. A force-based SB detection system, which used a pressure-sensitive piezoelectric film embedded in the OA, was utilized to trigger a vibrator attached to the OA. Vibratory stimulation was withheld during the first 2-week adaptation period, applied during the 4-week stimulation period. The number and duration of SB episodes/hour of sleep were calculated based on masseter electromyographic activity recorded with in-home portable polysomnography. As a result, the number and duration of SB episodes decreased significantly after application of vibratory stimulation.
Contingent vibratory stimulation through an OA may suppress SB-related masticatory muscle activity continuously and could be effective for the management of SB.
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| Free Research Field |
歯科補綴学
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| Academic Significance and Societal Importance of the Research Achievements |
睡眠時ブラキシズム(SB)の管理法として一般的に用いられている口腔内装置(OA)のSB減少効果は一時的なものである．そこで我々は特に慢性的なSBのある患者に対し，咬合力を軽減する可能性のあるバイオフィードバック療法とOAを組み合わせて使用することで，よりSB抑制効果を高めることができると考えた．さらに，振動刺激スプリントはOAの形態をベースとしているため，患者が標準的なOAと同じように簡単に使用することができ，患者のコンプライアンスの向上を期待できる．このように振動刺激を用いたバイオフィードバック療法は，SBの管理のために実用的かつ臨床的に適用可能な方法であると考えられる．
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