Cephalometric study with Downs analysis on normal occlusion of Korean adults in China
10.3969/j.issn.1001-3733.2010.01.021
- VernacularTitle:中国延边地区朝鲜族正常(牙合)成人Downs分析法正常值的建立
- Author:
Yan ZHENG
;
Fengzhe CHE
- Publication Type:Journal Article
- Keywords:
Normal occlusion;
Korean;
Downs analysis;
Cephalomet
- From:
Journal of Practical Stomatology
2010;26(1):90-93
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish a cephalometric norms of Downs analysis for Korean population in China. Methods: 72 Korean adults in Yanbian with normal occlusion and harmonious face were selected. Lateral cephalometric radiographs were taken and analyzed with Downs analysis. The data was compared with the norms of the Korean in Seoul, Republic of Korea, which reported by Park. Results: Means, standard deviation of Downs polygon of our samples were presented. Differences between males and females were found in our samples: Facial angle in males group was smaller than that in females group. Angle of Yaix, L1 to mandibular plane, L1 to occlusal plane and U1 to AP plane in male group were larger than female group(P<0.05). Statistically significant differences were detected between our samples and Park's: Facial angle in Yanbian group was smaller than Soul group, while, Yaxis and occlusal plane was larger in Yanbian group. Angles of convexity of Yanbian males were larger than Soul males(P<0.05). Statistically significant differences were detected between our sample and Han group in Northeast China: Facial angle and AB-NP angle were larger than Han group. Angle of mandibular plane, angle of Yaix, L1 to mandibular plane, L1 to occlusal plane, angle of U1 to L1were smaller than Han group (P<0.05). Conclusion: Korean males in Yanbian district tend to have more convex profiles than females. Compared with Korean population in Seoul, Korean in Yanbian have more convex facial profile. Facial characteristics of Korean in Yanbian are between Korean population in Soul and Han population in Northeast China.
