咬合接触部位の違いが側方クレンチング時の下顎の変位に及ぼす影響  [in Japanese] Influence of Alteration of Tooth Contact on Mandibular Displacement during Lateral Clenching  [in Japanese]

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Author(s)

    • 馬場 一美 BABA Kazuyoshi
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 湯上 圭 YUGAMI Kei
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 屋嘉 智彦 YAKA Tomohiko
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 秋重 智司 AKISHIGE Satoshi
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 羽毛田 匡 HAKETA Tadasu
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 藍 稔 AI Minoru
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University

Abstract

To investigate the relationship between occlusal scheme and joint loading, mandibular displacement was measured during lateral clenching under experimentally altered occlusal conditions. Acrylic occlusal devices were fabricated for the lower working-side canine, working-side second molar, and balancingside second molar. With the aid of these devices, various occlusal states were simulated. Eight healthy subjects volunteered for this study and performed clenching tasks. Vertical displacements of the mandible were recorded by linear variable differential transformers, and the results were as follows:<BR>1. Clenching efforts in the lateral mandibular position caused elevation of the mandible.<BR>2. When a single occlusal device was placed unilaterally, the amount of the upward displacement near the supporting tooth tended to be smallest.<BR>3. Insertion of three occlusaldevices (bilateral tooth contacts) reduced the amplitude of mandibular displacement.<BR>These results suggested that the nature of reaction forces at the temporomandibular joints caused by the elevation of the mandible would be influenced by the occlusal status.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 43(2), 328-334, 1999-04-10

    Japan Prosthodontic Society

References:  25

Cited by:  4

Codes

  • NII Article ID (NAID)
    10008172945
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03895386
  • Data Source
    CJP  CJPref  J-STAGE 
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