STRESS ANALYSIS OF ABUTMENT FOR DISTAL EXTENSION REMOVABLE PARTIAL DENTURE BY CLASP DESIGN AND IMPRESSION METHOD

편측후방연장 국소의치에서 인상채득 방법과 클라스프 설계에 따른 지대치의 응력분석에 관한 연구

  • Ahn Hee-Young (Department of Prosthodontics, School of Dentistry, and Wonkwang Dental Research Institute, Wonkwang University) ;
  • Kim Kwang-Jun (Department of Prosthodontics, School of Dentistry, and Wonkwang Dental Research Institute, Wonkwang University) ;
  • Cho Hye-Won (Department of Prosthodontics, School of Dentistry, and Wonkwang Dental Research Institute, Wonkwang University) ;
  • Jin Tai-Ho (Department of Prosthodontics, School of Dentistry, and Wonkwang Dental Research Institute, Wonkwang University)
  • 안희영 (원광대학교 치과대학 치과보철학교실 및 원광치의학연구소) ;
  • 김광준 (원광대학교 치과대학 치과보철학교실 및 원광치의학연구소) ;
  • 조혜원 (원광대학교 치과대학 치과보철학교실 및 원광치의학연구소) ;
  • 진태호 (원광대학교 치과대학 치과보철학교실 및 원광치의학연구소)
  • Published : 2001.10.01

Abstract

This study was performed tn investigate the effects of impression method and design of the retainer on the stress of abutment tooth in distal extension RPD. Three different types of direct retainer such as Akers clasp, RPI clasp, and wrought wire clasp were designed. Stress on the abutment tooth was measured and analyzed with strain gauge method. Impressions were anatomic impression technique and functional impression technique. The following conclusions were drawn from this study. 1. The stress at the abutment tooth on all RPD was decreased in functional impression except RPI clasp retained RPD. 2 The stress at the abutment tooth on RPI clasp retained RPD was the most smallest in anatomic Impression. 3. While load is increase the stress at the abutment tooth was increased, but the change of stress at the buccal side of abutment tooth was not too much in functional impression.

Keywords