Movement of the Condyle Point and Incisal Point during Exercise

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著者

    • ASANO Takashi
    • Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo
    • KAWARA Misao
    • Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo
    • IIDA Takashi
    • Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo
    • KOMIYAMA Osamu
    • Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo
    • SUZUKI Hiroshi
    • Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo
    • KUROKI Toshikazu
    • Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo
    • KOHNO Chiharu
    • Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo

抄録

Generally, although the mandible is considered to be fixed during body movement, its dynamics have not been clarified. In this study, we investigated the condylar movement pattern in extension⁄flexion movement of the body trunk. Six healthy dentulous subjects performed extension⁄flexion movement of the body trunk using a multipurpose muscle function training system. The condylar and incisal point movement patterns were measured using a jaw movement analyzer and 3D ultrasonic navigator. The maximum displacements of the condylar and incisal points in the mouth opening were measured. The relative percentages of condylar point displacements in extension⁄flexion of the body trunk to the maximum displacements were calculated, and displacements in the anterior, and posterior, superior, and inferior directions were compared. The condylar point displacements in the anterior, posterior, superior, and inferior directions in extension⁄flexion of the body trunk were 8.1%, 30.1%, 73.2%, and 10.7% on the right side and 5.8%, 55.1%, 31.3%, and 13.0% on the left, respectively. The incisal point on mouth opening was 7.1%. Based on the above findings, the mandible is not fixed at the intercuspal position by clenching, but is displaced during muscle force exertion by the body trunk.

収録刊行物

  • Prosthodontic research & practice  

    Prosthodontic research & practice 7(2), 210-212, 2008-07-01 

    Japan Prosthodontic Society

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各種コード

  • NII論文ID(NAID)
    10021955263
  • NII書誌ID(NCID)
    AA11728086
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13477021
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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