The Journal of the Korean dental association (대한치과의사협회지)

The Korean Dental Association (대한치과의사협회)
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A Study on the Rotation Center of the Different Shape of Root

치근형태에 따른 회전점에 관한 연구

  • Lee, Ho-Yong (Dept. of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Um, Young-Bae (Dept. of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Lee, Kae-Song (Dept. of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Choi, Kwang-Chul (Dept. of Prosthodontics, College of Dentistry, Seoul National University)
  • 이호용 (서울대학교 대학원 치의학과 보철학) ;
  • 엄영배 (서울대학교 대학원 치의학과 보철학) ;
  • 이개송 (서울대학교 대학원 치의학과 보철학) ;
  • 최광철 (서울대학교 대학원 치의학과 보철학)
  • Published : 1973.11.30
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Abstract

This study is to determine the exact position of tipping rotation center of root. The method of measurement is to record by means of dial gauge. The different shapes of root of lower second premolar are named as smooth type, tapered type, and curved type. The followings are the result ; 1. The tipping rotation center of the teeth varies with he shape of roots. 2. The rotation center of the root is placed apical one third portion upon roots in the smooth shape of roots, one half portion of roots in the taper shape of roots and below the apical one-third of root in curve shape.

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