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Development of pathophysiology and clinical research diagnostic criteria for tooth clenching habit

Research Project

Project/Area Number 16390569
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionMatsumoto Dental University

Principal Investigator

KATO Takafumi  Matsumoto Dental University, Institute for Oral Science, Associate professor, 総合歯科医学研究所, 助教授 (50367520)

Co-Investigator(Kenkyū-buntansha) MORIMOTO Toshifumi  Matsumoto Dental University, Graduate School for Oral Medicine, Professor, 大学院・歯学独立研究科, 教授 (20028731)
YAMASHITA Shuichiro  Matsumoto Dental University, Graduate School for Oral Medicine, Professor, 大学院・歯学独立研究科, 教授 (80242212)
MASUDA Yuji  Matsumoto Dental University, Graduate School for Oral Medicine, Professor, 大学院・歯学独立研究科, 教授 (20190366)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥12,700,000 (Direct Cost: ¥12,700,000)
Fiscal Year 2005: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2004: ¥9,900,000 (Direct Cost: ¥9,900,000)
KeywordsTooth clenching habit / Swallowing / masticatory muscle activity / Bruxism / cut-off values
Research Abstract

First part of this research project was conducted to assess the occurrence and the modality of spontaneous orofacial behaviors of waking non-pain healthy subjects unaware of bruxism during wakefulness. Subjects read silently for 30 minutes while polygraphic recordings were made with simultaneous audio video monitoring. Orofacial behaviors were scored and the activity and duration of masseter muscle bursts was calculated for the types of orofacial behaviors. Among spontaneous orofacial behaviors, swallowing was most frequently observed. Out of all masseter muscle bursts detected, Fiftey-five percent of all masseter bursts were associated with functional orofacial behaviors while 45% were regarded as non-functional. Most masseter bursts lasted for less than 2 seconds with an activity less than 20% of maximal voluntary clenching. These values did not differ between the types of associated orofacial behaviors. Spontaneous orofacial behaviors can be specifically identified with polygraphic … More recording and thereby non-functional masseter EMG activity can be differentiated from functional masseter EMG activity.
The second part of the project aimed to compare the occurrence and the modality of spontaneous orofacial behaviors and masseter activity between subjects with and without awareness of tooth clenching habit, using polygraphic and audio-video recordings. Neither the number of events for orofacial behaviors, subjective psychological/sensory measures nor unstimulated whole salivary flow rate did not differ between the groups. However, masseter bursts unrelated to the above behaviors occurred more frequently in subjects with awareness than controls although the burst activity and duration did not differ between two groups. The results suggest that non-pain subjects with awareness of tooth clenching showed the increased number of non-functional masseter bursts under non-stressful laboratory condition. Thus, the results suggest that the physiological diagnostic criteria could be established using EMG measures in the future study. Less

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (18 results)

All 2006 2005 2004 Other

All Journal Article (16 results) Book (2 results)

  • [Journal Article] Quantitative analysis of surface EMG activity of cranial and leg muscles across sleep stages in humans.2006

    • Author(s)
      Okura K. et al.
    • Journal Title

      Clinical Neurophysiology 117・2

      Pages: 269-278

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] 睡眠中の一過性の覚醒と自律神経2006

    • Author(s)
      加藤隆史
    • Journal Title

      自律神経 (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Quantitative analysis of surface EMG activity of cranial and leg muscles across sleep stages in human.2006

    • Author(s)
      Okura K et al.
    • Journal Title

      Clinical Neurophysiology 117(2)

      Pages: 269-278

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 睡眠時プラキシズムの病態生理 : 最近の見解2005

    • Author(s)
      加藤隆史
    • Journal Title

      松本歯学 31・1

      Pages: 20-26

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Pathophysiology of sleep bruxism : update.2005

    • Author(s)
      Kato T.
    • Journal Title

      Matsumoto-Shigaku 31(1)

      Pages: 20-26

    • NAID

      80017785715

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Sleep bruxism.2005

    • Author(s)
      Lavigne G et al.
    • Journal Title

      Principles and Practice of Sleep Medicine 4^<th>eds (edited by Kryger MH, Roth T, Dement C, WB Saunders, Philadelphia)

      Pages: 946-959

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 睡眠時ブラキシズムの病態生理:最近の見解2005

    • Author(s)
      加藤隆史
    • Journal Title

      松本歯学 31・1

      Pages: 20-26

    • NAID

      80017785715

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Experimental induced arousals during sleep : cross-modality matching paradigm2004

    • Author(s)
      Kato T.et al.
    • Journal Title

      Journal of Sleep Research 13・3

      Pages: 229-238

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Experimental Pain Perception remains equally active over all sleep stages.2004

    • Author(s)
      Lavigne GJ et al.
    • Journal Title

      Pain 110・3

      Pages: 646-655

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] 睡眠関連疾患診療のノウハウ-各診療科の立場から : 歯科医2004

    • Author(s)
      加藤隆史 他
    • Journal Title

      診断と治療 92・7

      Pages: 1185-1188

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Experimentally induced arousal during sleep : a cross-modality matching paradigm.2004

    • Author(s)
      Kato T et al.
    • Journal Title

      Journal of Sleep Research 13(3)

      Pages: 229-238

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Experimental pain perception remains equally active over all sleep stages.2004

    • Author(s)
      Lavigne GJ et al.
    • Journal Title

      Pain 110(3)

      Pages: 646-655

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 'Keynotes for sleep madicine' from dentists.2004

    • Author(s)
      Kato T et al.
    • Journal Title

      Shindan to Chiryo 92(7)

      Pages: 1185-1188

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Experimental induced arousals during sleep : cross-modality matching paradigm.2004

    • Author(s)
      Kato T.et al.
    • Journal Title

      Journal of Sleep Research 13・3

      Pages: 229-238

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 睡眠関連疾患診療のノウハウ-各診療科の立場から:歯科医2004

    • Author(s)
      加藤隆史 他
    • Journal Title

      診断と治療 92・7

      Pages: 1185-1188

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Transient arousal during sleep and autonomic nervous system.

    • Author(s)
      Kato T.
    • Journal Title

      Jiritsu-Shinkei (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] Principles and Practice of Sleep Medicine 4^th edition2005

    • Author(s)
      Lavigne GJ. et al.
    • Total Pages
      1517
    • Publisher
      Elsevier Saunders
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] Principles and Practice of Sleep Medicine 4^<th> edition2005

    • Author(s)
      Lavigne GJ. et al.
    • Total Pages
      1517
    • Publisher
      Elsevier Saunders
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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