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Influence of sleep conditions for bruxism

Research Project

Project/Area Number 20K10058
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionNihon University

Principal Investigator

KOMIYAMA Osamu  日本大学, 松戸歯学部, 教授 (60339223)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords睡眠時ブラキシズム / 顎口腔機能 / 補綴歯科 / 睡眠状態 / 睡眠 / ブラキシズム
Outline of Research at the Start

睡眠時ブラキシズムは、睡眠中に発生する歯ぎしりや、かみしめを主徴とする不随意な咀嚼筋活動であり、歯科補綴装置の破壊や脱離、さらには咬合性外傷や歯根破折などの歯科的な問題を引き起こす。そこで、睡眠時ブラキシズムが生じるメカニズムに着目し、原因療法としての治療法の確立を検討することとした。本研究では、睡眠時ブラキシズムを習癖として有する被験者群、ブラキシズムの習癖を認めない被験者群に分類する。この両群の被験者に断眠実験を行い、実験前後の睡眠状態の変化が睡眠時ブラキシズムに及ぼす影響を検討する。さらに補綴歯科装置の破損を頻繁に発生する睡眠時ブラキシズム患者に対して各種方略による睡眠の改善を試行する。

Outline of Final Research Achievements

This study was conducted to investigate the effect of sleep restriction on sleep conditions and bruxism. Healthy participants participated in an experimental voluntary total sleep restriction (SR) study. In a study design, they were invited to sleep as usual, normal sleep or to restrict their sleep for four nights. Following the SR night, participants were followed for 3 consecutive days including the 2 sleep nights. In NS experiment, all participants were instructed to maintain NS both nights. During all nights, actigraphy data were collected and total sleep time was estimated. On days before and after sleep conditions, all participants underwent measurements EMG activity for repeated masticatory muscle activity, and the Epworth sleepiness scale. The present results suggest that SR affects to sleep bruxism related to sleep conditions.

Academic Significance and Societal Importance of the Research Achievements

本研究により、断眠後の回復睡眠時には、睡眠深度が深い時間が長くなり、微小覚醒の回数は減少し、睡眠時ブラキシズムの回数が減少することが明らかとなった。すなわち、深い睡眠状態が長い、より良質な睡眠を継続的に心がけることで、睡眠時ブラキシズムを減じて、これまで解決困難とされた睡眠時ブラキシズムにより発生する歯科補綴装置の破壊や脱離、咬合性外傷や歯根破折などの歯科的問題を改善できる可能性が示唆された。今後は、より良質な睡眠による、睡眠時ブラキシズムの予防効果と生活の質向上への良好な効果について、さらに検討を続けて行く。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] Aarhus University(デンマーク)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Aarhus University(デンマーク)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Standardized palpation of the temporalis muscle evoke referred pain and sensations in individuals without TMD2022

    • Author(s)
      Masuda M, Hayakawa H, Boudreau SA, Iida T, Svensson P, Komiyama O
    • Journal Title

      Clinical Oral Investigation

      Volume: 26 Issue: 2 Pages: 1241-1249

    • DOI

      10.1007/s00784-021-04096-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Drop homotopic effects of masseter-muscle pain on somatosensory sensitivity in healthy participants2021

    • Author(s)
      Hayakawa H, Iida T, Honda-Sakaki M, Masuda M, Svensson P, Komiyama O
    • Journal Title

      Scientific Report

      Volume: 11 Issue: 1 Pages: 10575-10575

    • DOI

      10.1038/s41598-021-89937-3

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Plasticity in corticomotor pathways linked to a jaw protrusion training task: Potential implications for management of patients with obstructive sleep apnea.2020

    • Author(s)
      Iida T, Kothari M, Sekihata S, Shimada A, Komiyama O, Svensson P
    • Journal Title

      Brain Research

      Volume: 1749 Pages: 147124-147124

    • DOI

      10.1016/j.brainres.2020.147124

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 睡眠障害が睡眠時ブラキシズムの発現に及ぼす影響2023

    • Author(s)
      山川 雄一郎,飯田 崇,岩田好弘,小見山 道
    • Organizer
      第59回日本顎口腔機能学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Referred pain/sensations evoked by palpation on the temporal muscle2021

    • Author(s)
      Kazuhiro Yoshida, Hidetoshi Hayakawa, Manabu Masuda, Shellie Ann Boudreau, Takashi Iida, Peter Svensson, Osamu Komiyama
    • Organizer
      The 99th General Session of the IADR
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Infulence of long-lasting jaw opening on the masseter muscle2021

    • Author(s)
      Yuki Ishii, Takashi Iida, Kazuhiro Yoshida, Hidetoshi Hayakawa, Antoon De Laat, Osamu komiyama
    • Organizer
      2021 Asian Academy of Orofacial Pain and Temporomandibular Disorder
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 咬筋筋痛は咬筋の深部のみではなく皮膚上の体性感覚に影響を及ぼす2021

    • Author(s)
      早川英利、飯田崇、榊実加、増田学、神山裕名、西森秀太、石井優貴、吉田一央、小見山道
    • Organizer
      日本補綴歯科学会第130回学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 持続的な開口は咬筋の圧痛閾値を低下する2021

    • Author(s)
      渡辺航介,早川英利,石井優貴,吉田一央,飯田崇,小見山 道
    • Organizer
      第34回一般社団法人日本顎関節学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 歯科治療時の持続的な開口動作が咀嚼筋の筋・筋膜痛に及ぼす影響2021

    • Author(s)
      飯田 崇、早川英利、石井優貴、増田 学、神山裕名、西森秀太、小見山 道
    • Organizer
      第26回一般社団法人日本口腔顔面痛学会総会・学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Effects of Masseter muscle Pain on Somatosensory Sensitivity2021

    • Author(s)
      Kazuhiro Yoshida, Manabu Masuda, Hidetoshi Hayakawa, Yuki Ishii, Hideta Nishimori, Hirona Kamiyama, Takashi Iida, Osamu Komiyama
    • Organizer
      The 7th Biennial Joint Congress of JPS-CPS-KAP
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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