대한소아치과학회지 (Journal of the korean academy of Pediatric Dentistry)
- 제26권1호
- /
- Pages.172-184
- /
- 1999
- /
- 1226-8496(pISSN)
- /
- 2288-3819(eISSN)
Angle 1급 부정교합 아동의 안면두개골 형태의 유형적 특징에 관한 연구
A CEPHALOMETRIC STUDY ON SUB-GROUPINGS IN KOREAN CHILDREN WITH CLASS I MALOCCLUSIONS : A COUNTERPART ANALYSIS
- Lee, Jeong-Ok (Department of Pediatric Dentistry, College of Dentistry, Kyung Hee University) ;
- Choi, Yeong-Chul (Department of Pediatric Dentistry, College of Dentistry, Kyung Hee University)
- 발행 : 1999.02.27
초록
The present study was performed to identify morphologic sub-groupings in Korean children with Class I malocclusions, and to find out anatomic differences between the sub-groups. Standardized lateral cephalometric radiographs of 152 Korean children, aged between 6 and 12 years, with Class I malocclusions were analyzed by the Counterpart Analysis. A statistical method, Ward's Minimum Variance Cluster Analysis, was employed to divide the sample into sub-groups those with similar morphologic characteristics. The results were as follows; 1. There appeared two facial types, Type I and Type II, in Korean children with Class I malocclusions, 48.7% and 51.3%, respectively. 2. In both sub-groups, there existed strong Class III skeletal patterns due to a counterclockwise rotation of the Middle Cranial Fossa alignment, and strong Class II skeletal patterns due to the long Posterior Maxillary vertical dimension and a clockwise rotation of the Ramus alignment. 3. There were no significant differences in Upper Anterior Facial Height between Type I and Type II,