咀嚼筋筋電図バイオフィードバック訓練による日中クレンチング抑制効果の持続性に関する検討  [in Japanese] Continuous Effect of Masticatory Muscle EMG Biofeedback on Awake Bruxism Regulation  [in Japanese]

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Author(s)

    • 渡邉 明 Watanabe Akira
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 藤澤 政紀 Fujisawa Masanori
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 木村 英敏 Kimura Hidetoshi
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 佐藤 雅介 Sato Masayuki
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 大塚 英稔 Otsuka Hidetoshi
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 斉藤 小夏 Saito Konatsu
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 菅原 絹枝 Sugawara Kinue
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 橋戸 広大 Hashido Koudai
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 岩瀬 直樹 Iwase Naoki
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry
    • 猪野 照夫 Ino Teruo
    • 明海大学歯学部機能保存回復学講座歯科補綴学分野 Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry

Abstract

これまで,日中のクレンチングが口腔領域に悪影響を及ぼすパラファンクションであると考えられているものの,治療法の確立には至っていない.それに対し,日中に行う咀嚼筋筋電図バイオフィードバック訓練(EMG-BF訓練)が日中クレンチングに対して抑制効果を与えるという報告がなされているものの,その持続性に関する検討は行われていない.今回,EMG-BF訓練による日中クレンチング抑制効果について,訓練終了1カ月後における持続性を検証することを目的として,本研究を行った.<br> 咬筋に軽度の筋痛を有する12名のクレンチング自覚者(男性7名,女性5名,平均年齢:31.5±6.3歳)をバイオフィードバック群(BF群)とコントロール群(CO群)にそれぞれ6名,無作為に割り振り実験を行った.側頭筋を対象とし,EMG-BF装置を使用し筋電図を測定した.日常生活環境下で連続する4日間とその1カ月後に,日中各5時間の測定を行った.1日目,4日目および1カ月後にEMG測定のみ行い,それぞれpre-test,post-testおよびfollow-upとした.BF群では,クレンチング時に電子音によるBF信号が発生し,クレンチングを認識させるEMG-BF訓練を2日目と3日目に2日間連続で行った.CO群ではいずれの測定日においてもBF信号を発生させず,EMG測定のみ行った.<br> 1日目のイベント数において,BF群(7.3±5.1回)とCO群(7.5±3.1回)の間に有意差は認められなかったが,BF群4日目(2.3±1.5回)と1カ月後(2.0±1.1回)で,1日目のイベント数(7.3±5.1回)に対して有意な減少を認めた(p < 0.05;Wilcoxon with Bonferroni's inequality test).<br> 実験の結果から,日中のクレンチングに対して行ったEMG-BF訓練が,クレンチング発現に対する抑制効果を発揮し,その効果は1カ月後でも持続することが示唆された.

Although daytime clenching is believed to be one of the oral parafunctions leading to dental problems, a treatment strategy has not yet been devised. Electromyogram (EMG) biofeedback (BF) training was performed to ascertain its effect on regulating daytime clenching behavior. However, the long-term effects remain unknown. Therefore, the purpose of this study was to determine the learning effect concerning one month after EMG-BF training.<br> Twelve subjects (7 males, 5 females: mean age; 31.5 ± 6.3 years) who had mild masticatory muscle pain with daytime clenching behavior were divided into the BF group (n=6) and control (CO) group (n=6) in a random fashion. Subjects were fitted with a hearing-aid-shaped EMG biofeedback apparatus, which was used to record EMG data under natural conditions from the temporal muscle, continuously for five hours on four consecutive days and 1 month after (1 Mo). EMG data on Days 1, 4 and 1 Mo were recorded without biofeedback as the pre-test, post-test, and follow-up test, respectively. On Days 2 and 3, subjects in the BF group were alerted to their clenching behaviors via an alert sound from the EMG biofeedback apparatus. No alert sound was given to the CO group throughout the recording sessions.<br> No significant difference was observed in the number of clenching events for five hours between the BF group (7.3 ± 5.1) and CO group (7.5 ± 2.1) on Day 1; however, significant decreases were found in the BF group between Day 1 (7.3 ± 5.1) and Day 4 (2.3 ± 1.5; <i>p</i> < 0.05), and Day 1 and 1 Mo (2.0 ± 1.1; <i>p</i> < 0.05; Wilcoxon with Bonferroni's inequality test).<br> Daytime clenching was reduced in the long term with the help of an EMG biofeedback system under natural circumstances. Daytime EMG-BF training decreased clenching events, and the effect may continue for one month after training.

Journal

  • The Journal of Japanese Society of Stomatognathic Function

    The Journal of Japanese Society of Stomatognathic Function 22(2), 109-119, 2016

    Japanese Society of Stomatognathic Function

Codes

  • NII Article ID (NAID)
    130005170852
  • Text Lang
    JPN
  • ISSN
    1340-9085
  • Data Source
    J-STAGE 
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