The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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IMPACTS OF RADICULAR DEVELOPMENT OF LOWER THIRD MOLARS ON ITS IMPACTION

제 1 소구치 발치 증례와 비발치 증례에서 하악 제 3 대구치 맹출에 관한 연구

  • Chung, Kyu-Rhim (Department of Orthodontics, College of Dentistry, Kyung Hee University) ;
  • Park, Young-Guk (Department of Orthodontics, College of Dentistry, Kyung Hee University) ;
  • Lee, Jeong-Minn (Department of Orthodontics, College of Dentistry, Kyung Hee University)
  • 정규림 (경희대학교 치과대학 교정학교실) ;
  • 박영국 (경희대학교 치과대학 교정학교실) ;
  • 이정민 (경희대학교 치과대학 교정학교실)
  • Published : 1993.12.01
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Abstract

It is the aim of this study to determine the impacts of radicular development of lower third molars on its eruption/impaction and to grope the prediction for eruption and/or impaction in advance. Three hundred and thirty cases of orthopantomogram were employed and classified as mesial root-dominant group, distal root-dominant group and Identical group according to the radicular development of lower third molars. This presentation has carried out the incipient mesial inclination, radicular development, impaction/eruption rate and changes of mesial inclination of the very teeth. Consequently the following summary and conclusions were drawn; Radicular development dominated mesial root than the distal and dominant mesial root invited higher potentialities for normal eruption. The mesial or honzontal impactions were detected on the distal root-dominant group. This analysis has been suggested the potential eruption/impaction of lower third molars were dependent upon the radicular development and the incipient mesial inclination.

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