水平荷重時においてクラスプ形態が支台歯の負担圧分散と義歯床の変位に与える影響  [in Japanese] The Influence of Clasp Designs on Stress Distribution of Abutment Teeth and Displacement of Denture Base under Horizontal Loads  [in Japanese]

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Author(s)

    • 齋藤 正恭 SAITO Masayasu
    • 北海道大学歯学部歯科補綴学第一講座 Department of 1 St Prosthetic Dentistry, Hokkaido University School of Dentistry
    • 三浦 美文 MIURA Yoshifumi
    • 北海道大学歯学部歯科補綴学第一講座 Department of 1 St Prosthetic Dentistry, Hokkaido University School of Dentistry
    • 野谷 健治 NOTANI Kenji
    • 北海道大学歯学部歯科補綴学第一講座 Department of 1 St Prosthetic Dentistry, Hokkaido University School of Dentistry
    • 相澤 隆 AIZAWA Takashi
    • 北海道大学歯学部歯科補綴学第一講座 Department of 1 St Prosthetic Dentistry, Hokkaido University School of Dentistry
    • 佐藤 弘美 SATO Hiromi
    • 北海道大学歯学部歯科補綴学第一講座 Department of 1 St Prosthetic Dentistry, Hokkaido University School of Dentistry
    • 川崎 貴生 KAWASAKI Takao
    • 北海道大学歯学部歯科補綴学第一講座 Department of 1 St Prosthetic Dentistry, Hokkaido University School of Dentistry

Abstract

The purpose of this study was to investigate the effect of the modification of clasp assemblies under horizontal load. The simulated mandibular model with unilateral free end was fabricated for this study. The eleven types of removable partial dentures (RPDs) using different retainers respectively were constructed. These retainers were a cone-telescopic crown, Akers clasp, double Akers clasp, RPI clasp (Kratochvil type) and seven modified clasps made from the first three clasps to which an enlarged bracing arm, a positive rest with hook and a distal rest with a guide plate were added. Horizontal loads were applied, and the stress on abutment teeth and the displacement of denture base were measured.<BR>The results were as follows:<BR>1. Under horizontal loads, the partial denture retained by cone-telescopic crowns had the least displacement of denture base.<BR>2. The RPDs with Akers clasps, double Akers clasps and RPI clasps generated large displacement of the denture base.<BR>3. The stress characteristics on abutment teeth and displacement of denture base of the RPDs with modified clasps were similar to those of cone-telescopic crowns with enlarged lingual bracing arms, especially.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 43(3), 529-537, 1999-06-10

    Japan Prosthodontic Society

References:  23

Cited by:  4

Codes

  • NII Article ID (NAID)
    10008173599
  • 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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