Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지

ABILITY OF NICKEL-TITANIUM FILES IN MAINTAINING THE ORIGINAL CURVATURE OF A CURVED ROOT CANAL AND ITS ANALYSIS BY FINITE ELEMENT METHODS

만곡 근관 형성시 니켈-티타늄 파일의 만곡 유지 능력과 그에 대한 유한요소법적 분석

  • Park, Han-Soo (Dept. of Conservative Dentistry, College of Dentistry, Seoul National University) ;
  • Lim, Sung-Sam (Dept. of Conservative Dentistry, College of Dentistry, Seoul National University) ;
  • Bae, Kwang-Shik (Dept. of Conservative Dentistry, College of Dentistry, Seoul National University) ;
  • Yoon, Soo-Han (Dept. of Conservative Dentistry, College of Dentistry, Seoul National University)
  • 박한수 (서울대학교 치과대학 치과보존학교실) ;
  • 임성삼 (서울대학교 치과대학 치과보존학교실) ;
  • 배광식 (서울대학교 치과대학 치과보존학교실) ;
  • 윤수한 (서울대학교 치과대학 치과보존학교실)
  • Published : 1997.04.08
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Abstract

The purpose of our study is to evaluate the ability of nickel-titanium(NiTi) files in maintaining the original curvature of a curved root canal during canal preparation. Curved canals on translucent resin blocks were prepared with NiTi and stainless steel files, and they were placed at the platform which can reproduce the same position. The unprepared and prepared canal forms were accurately compared by double exposure technique of photography. By finite element methods we also analyzed stress distributions of NiTi and stainless steel files in a curved canal. The results were as follows : 1. NiTi files were excellent in maintaining the original curvature of a curved canal than stainless steel files after canal preparation. 2. The results of canal preparation with these files were well verified by the analysis of stress distributions using finite element methods.

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