치열공간 부조화와 두 개 안면골격 형태의 상관성
Relationship between Intraarch space discrepancy and crnioacial morphology
김요숙, 정애진, 강경화,
소속 상세정보
김요숙 ( ) - 원광대학교 치과대학 교정학교실
정애진 ( ) - 원광대학교 치의학연구소, 치과대학
강경화 ( ) - 원광대학교 치의학연구소, 치과대학
KMID : 0361920030330040223
Abstract
The purpose of this study was to investigate the relationship between the space discrepancy of the mandibular dentition and craniofacial morphology in adults with good Angle class I occlusion. Dental casts of normal group, crowded group and spaced group were selected on the basis of dental crowding and spacing. Subjects with excessive space to accomodate the lower teeth were classified as spaced group(39). Subjects with a space discrepancy of more than 4mm were classified as crowded group(45). Normal subjects had little or no dental crowding and spacing(40). Various skeletodental measurements in lateral cephalograms were evaluated and compared by ANOVA, Pearson correlation analysis and multiple stepwise regression analysis.
The results were as follows
1. ANB angle was larger in crowded group than in spaced group.
2. Maxilla and mandible in crowded group were inclined more downward and forward than in --:)aced group, so crowded group was found to have vertical tendency.
3. Anterior cranial base length and mandibninr body length were longer in spaced group than in crowded group.
4. According to the multiple stepwise regression analysis with space discrepancy as dependent variable, 40% of variance
of space discrepancy could be explained by ANB angle, anterior facial height and ramus height. Multiple regression
equation was as follows
Space discrepancy=46.51-2.51ANB-0.58AFH+0.65RH
키워드
총생;공극;공간 부조화;두개안면골격 형태;Crowding;Spacing;Space discrepancy;Craniofacial morphology
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