대한치과교정학회지 (The korean journal of orthodontics)
- 제13권2호
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- Pages.201-204
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- 1983
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- 2234-7518(pISSN)
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- 2005-372X(eISSN)
Angle I 급 부정교합자의 제2대구치 석회화 과정에 관한 연구
A STUDY ON CALCIFICATION OF THE SECOND MOLARS IN ANGLE CLASS I MALOCCLUSION
- 서정훈 (서울대학교 치과대학 교정학교실)
- Suhr, Cheong Hoon (Department of Orthodontics, College of Dentistry, S.N.U.)
- 발행 : 1983.09.01
초록
To study the calcification of second molars in Class I malocclusion with normal craniofacial structure, the author examined cephalograms, orthopantomograms, periapical films of 538 children from 7 y 0 m to 15y 11m old who had Class I malocclusion with normal craniofacial structure, and observed the calcification stage of upper and lower second molars. The results are as follows. 1. The mean ages of crown completion of upper and lower second molars are
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