한국인 아동 측방 영구치군의 맹출속도 및 시기에 관한 연구
A Study on Eruption Rate and Timing of Buccal Permanent Teeth in Korean Children
정해만, 정재헌, 이동주,
소속 상세정보
정해만 ( Jung Hae-Man ) - 조선대학교 치과대학 인체생물학교실
정재헌 ( Chung Chae-Heon ) - 조선대학교 치과대학 치과보철학교실
이동주 ( Lee Dong-Joo ) - 조선대학교 치과대학 교정학교실
KMID : 0353319890130010001
Abstract
This study was done to observe the changes in calcification and eruption rates and sepuence and eruption timing of developing buccal permanent teeth. Por that purpose, 35 male and 36 female subjects who have no significant mechanical interference in erupting path were selected. Then orthopantomographs were taken with 6 months interval.
Comparative study was done and the following results were obtained :
1. There was no upgrade on the stage of calcification.
2. On the eruption rate, the greatest change was seen at the stage of two. thirds of root completed.
3. The chronologic ages that arrived each calcification stage were -advanced in female subjects than male ones.
4. The seqence of eruption was first premolar, canine, seclond premolar in male both on maxila and mandible, but in female, first premoiar, canine, second premolar on maxilla, and canine, first premolar, second premolar on mandible
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