The korean journal of orthodontics (대한치과교정학회지)
- Volume 23 Issue 4 Serial No. 43
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- Pages.493-501
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- 1993
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- 2234-7518(pISSN)
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- 2005-372X(eISSN)
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) ;
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Park, Young-Guk
(Department of Orthodontics, College of Dentistry, Kyung Hee University) ;
- Lee, Jeong-Minn (Department of Orthodontics, College of Dentistry, Kyung Hee University)
- Published : 1993.12.01
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.