咬みしめ時の下顎の変位と非咬みしめ側の咬合接触面積との関係  [in Japanese] Relationship between Jaw Displacement and Simulated Non-chewing Side Contact Area during Clenching  [in Japanese]

Access this Article

Search this Article

Author(s)

    • 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
    • 谷田部 優 YATABE Masaru
    • 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
    • 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
    • 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
    • 上野 剛史 UENO Takeshi
    • 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 factors affecting the non-chewing side contact, the relationship among simulated non-chewing side tooth contact, jaw displacement, and masticatory muscle activity was evaluated.<BR>Seven healthy male subjects volunteered for this study. They were asked to clench on a central bearing device, and vertical displacements of lower bilateral second molars were measured by linear variable transformers. Simultaneously, EMG activity was measured from masseter and anterior temporal muscles. Thesubjects were also asked to clench with film strips in place on unilateral premolars in order to simulate the occlusal phase of the chewing cycle. Occlusal registrations on the contralateral sides were recorded, and then the occlusal contact area was calculated for each side.<BR>Comparison of bilateral tooth contact area and second molar displacements showed that the contact area tended to be larger on the side where larger molar displacement was found. The side difference of the contact area was significantly correlated to that of second molar displacement (Pearson's r =0.85 p= 0.01), however, not to EMG activity.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 43(4), 689-697, 1999-08-10

    Japan Prosthodontic Society

References:  21

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008174085
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03895386
  • Data Source
    CJP  CJPref  J-STAGE 
Page Top