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Diagnostic Application of Functional Coupling between Jaw Function and Balanced Head Movement

Research Project

Project/Area Number 12557167
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 補綴理工系歯学
Research InstitutionNIIGATA UNIVERSITY

Principal Investigator

KOHNO Shoji  Graduate School of Medical and Dental Sciences, NIIGATA UNIVERSITY, Professor, 大学院・医歯学総合研究科, 教授 (50014098)

Co-Investigator(Kenkyū-buntansha) IKEDA Keisuke  Graduate School of Medical and Dental Sciences, NIIGATA UNIVERSITY, Assistant, 大学院・医歯学総合研究科, 助手 (30313521)
ARAI Yoshiaki  Graduate School of Medical and Dental Sciences, NIIGATA UNIVERSITY, Assistant, 大学院・医歯学総合研究科, 助手 (10301186)
KOBAYASHI Hiroshi  Graduate School of Medical and Dental Sciences, NIIGATA UNIVERSITY, Associate Professor, 大学院・医歯学総合研究科, 助教授 (00225533)
IGARASHI Naoko  Graduate School of Medical and Dental Sciences, NIIGATA UNIVERSITY, Assistant, 大学院・医歯学総合研究科, 助手 (20313520)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥6,100,000 (Direct Cost: ¥6,100,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥5,200,000 (Direct Cost: ¥5,200,000)
Keywordsjaw movement / head movement / evaluation of jaw function / 顎機能評価法
Research Abstract

We have previously demonstrated the existence of a functional-coupling between the head and the mandible. The objective of the present study was to reveal mechanisms of this functional coupling and effects of occlusion on this coupling.
We measured tridimensionally both the movement of the head and mandible and the electromyographic activities in the masticatory and head-neck muscles in healthy subjects and patients of temporomandibular disorders.
In healthy subjects, heads moved cyclically in the same cycle time as that of both masticatory and tooth-tapping jaw movements. The head underwent a rotation-like sagittal movement whose rotation center located above the cranial base point. The masticatory muscles and the neck muscle (the stemocleidmastoid muscle) showed rhythmical activities synchronized with jaw movements. The neck muscle activity showed a linear correlation with masticatory force. Additionally, it was seem that the neck muscle began the activity before the occlusal phase of jaw movements. It is demonstrated that the neck muscle contribute to the synchronized head movement in the anticipatory manner. However we could not confirm that this coordinated head movement would influenced on whole body flicking.
In patients of temporomandibular disorders, the degree of synchronization between head and jaw movement was approximately three-quarters of that with healthy subjects during mastication and tooth-tapping. This variable was influenced by existence of TMD symptoms, especially limited jaw opening, which suggests mechanical feature of the coupling between head and jaw movement. Contribution of occlusal features to head movement has not been confirmed in our study.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] Naoko Igarashi: "Head movements and neck muscle activities associated with the jaw movement during mastication in the rabbit"Brain Research. 871. 151-155 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 河野世佳: "下顎タッピング運動時の頭部平衡運動の存在について(最近のトピックス)"新潟歯学会誌. 30. 69-70 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 五十嵐直子: "ウサギの咀嚼時に観察される下顎運動に協調した頭部運動と頸筋活動(学位研究紹介)"新潟歯学会誌. 30. 79-80 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 河野世佳: "下顎タッピング運動時の頭部平衡運動の存在について"日本補綴歯科学会雑誌. 44. 696-708 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shoji Kohno: "Functional-rhythmical coupling of head and mandibular movements"Journal of Oral Rehabilitation. 28. 161-167 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Shoji Kohno: "Rotational head motion concurrent to rhythmical mandibular opening movements"Journal of Oral Rehabilitation. 28. 740-747 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] MD.M.Rahman: "Head position affects the antero-posterior location of the tapping point"日本顎口腔機能学会雑誌. 8. 1-6 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 武正道代: "食物取り込み時の食物の大きさが開口量と頭部運動量に与える影響"日本顎口腔機能学会雑誌. 8. 17-24 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Igarashi, Naoko: "Head movements and neck muscle activities associated with the jaw movement during mastication in the rabbit"Brain Research. 871. 151-155 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kohno, Tsuguyoshi: "Functionally Balanced Head Motion during Mandibular Tapping Movements"Niigata Dental Journal. 30. 69-70 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Igarashi, Naoko: "Head movements and neck muscle activities associated with jaw movement during mastication in the rabbit"Niigata Dental Journal. 30. 79-80 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kohno, Tsuguyoshi: "Functionally Balanced Head Motion during Mandibular Tapping Movements"Journal of Japan Prosthodontic Society. 44. 696-708 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kohno, Shoji: "Functional-rhythmical coupling of head and mandibular movements"Journal of Oral Rehabilitation. 28. 161-167 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kohno, Shoji: "Rotational head motion concurrent to rhythmical mandibular opening movements"Journal of Oral Rehabilitation. 28. 740-747 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] MD. M. Rahaman: "Head position affects the antero-posterior location of the tapping point"Journal of Japanese Society of Stomatognathic Function. 8. 1-6 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Takemasa, Michiyo: "The influence of food size during food intake on mouth opening and head movement"Journal of Japanese Society of Stomatognathic Function. 8. 17-24 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kohno, Shoji: "Functional-rhythmical coupling of head and mandibular movements"Journal of Oral Rehabilitation. 23. 161-167 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kohno, Shoji: "Rotational head motion concurrent to rhythmical mandibular opening movements"Journal of Oral Rehabilitation. 28. 740-747 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] MD. M. Rahman: "Head position affects the antero-posterior location of the tapping point"日本学口腔機脳学会雑誌. 8. 1-6 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 武正道代: "食物取り込み時の食物の大きさが開口量と頭部運動量に与える影響"日本学口腔機脳学会雑誌. 8. 17-24 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 河野世佳: "下顎タッピング運動時の頭部平衡運動の存在について"日本補綴歯科学会雑誌. 44・5. 696-708 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 小林修平: "咬合状態に起因する多臓器の異常"財団法人口腔保健協会. 421 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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