咬合力負荷時の歯の変形  [in Japanese] Tooth Deformation under a Load of Occlusal Force  [in Japanese]

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Author(s)

    • 大塩 恭仁 OSHIO Takayoshi
    • 徳島大学大学院歯学研究科歯科補綴学第二講座 Department of Fixed Prosthodontics, Graduate School of Dentistry, The University of Tokushima

Abstract

The purpose of this study was to evaluate the relationship between tooth deformation and functional occlusal loading. Vertical length of buccal tooth surface was measured with a newly-developed submicron transform detector. Deformations of upper canines and first premolars of 13 adult volunteers were evaluated under different occlusal conditions. Buccal tooth surface was contracted with buccal cusp loading and expanded with palatal cusp loading. The median of the first premolar deformation was-171 nm/mm/ 100 N with buccal cusp loading and 34 nm/mm/100 N with palatal cusp loading.<BR>Maximum clenching at eccentric occlusion exhibited significantly larger tooth deformation than that of intercuspal occlusion. The experimental occlusal interference exhibited relatively large tooth deformation, while insignificant deformation was seen with mastication. The results suggested that tooth structure may receive more harmful influence from occlusal imbalance and bruxism, and that tooth deformation analysis may have potential to a evaluate a clinically ideal occlusion.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 44(2), 254-264, 2000-04-10

    Japan Prosthodontic Society

References:  22

Cited by:  7

Codes

  • NII Article ID (NAID)
    10008155263
  • 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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