The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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A ROENTGENOGRAPHIC STUDY ON APICAL ROOT RESORPTION OF HUMAN PERMANENT TEETH

영구치의 치근단흡목에 관한 방사선학적 연구

  • Kang, Bong Ki (Dept. of Orthodontics, Graduate School, Seoul National University)
  • 강봉기 (서울대학교 대학원 치의학과 교정학)
  • Published : 1977.12.01
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Abstract

The purpose of this study was to investigate the resorption potential in human permanent teeth by analyzing the frequency and the degree of root resorption as revealed by routine intraoral roentgenograms. The following conclusions were obtained: 1) The distribution of root resorptions was as follows; a) 65.3 per cent were no root resorption. b) 7.0 per cent showed questionable root shortening. c) 25.2 per cent were definite root shortening. d) 2.5 per cent showed very severe resorption. 2) The order of susceptibility of teeth to resorption in this study was consistent with other studies. 3) The maxillary teeth showed a much higher incidence (52.2 per cent) than the mandibular teeth (17.1 per cent) 4) The sex ratio of the sample in this study was 1.3 female to 1 male.

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