頭部X線規格側貌寫眞計測에 의한 韓國人 成年男女의 標準値에 關한 硏究
STANDARDS FOR KOREAN ADULT FACIAL RELATIONSHIPS BY VARIOUS ROENTGENO-CEPHALOMETRIC ANALYSIS
이종택,
소속 상세정보
이종택 ( Lee Chong-Taik ) - Japan Osaka Dental University
KMID : 0361919880180020459
Abstract
頭部 Ⅹ線規格寫眞法이 齒科矯正學에 導入된 以來, 顎顔面頭蓋의 形態學的硏究에, 劃期的 手段으로서 應用되여, 齒科矯正學에 關한 症例分析 및 治燎評價에 重要한 方法으로서 採用되고 있다. 著者는 正常咬合의 韓國人成人男女의 頭部 Ⅹ線規格寫眞을 利用하여, 標準値의 算定및 日本人, 白人과의 比較檢討를 行하였다. 資料로서는 成年男子 50名, 女子 計 100名을 撮影하여 資料로 하였다. 硏究方法으로서는, 6種의 分析法을 利用하여 計測하였으며, 著者가 說定한 U-1 to Huxley line angle을 加한 58種의 計惻項目에 對하여 計惻檢討하였으며, 다음과 같은 結果를 얻었다. 1. 各分析法에 의한 韓國人成人의 標準値를 男女別로 算出하였으며, 齒科矯正 診斷에 應用하기위하여 合理的이라고 생각되는 14計測項目을 選定하여 標準偏差圖表와 cephalometric profilogram을 作成하였다. 2. 本資料에서의 男女間의 性差의 有意性은 角度的計測項目에서는 없었으며, 距離的計測에 있어서는 有意差가 나타났다.
3. 日本人과의 比較에 있어서는 男女의 gonial angle, 男性間의 interincisal angle에서 有意差가 나타났으나, 平均値差가 많지않았으며, 韓國人과의 類以性이 强하게 나타났으며, 女性에 있어서는 男性보다 더욱 强한 類以性이 나타났다. 4. 白人과의 比較에 있어서는 angle of convexity, mandibular plane angle, Y-axis angle, interincisal angle, L-I to mandibular plane angle에서 有意差가 나타났으며, 韓國人은 白人보다 convex type의 顔貌였다. 5. 新設計測項目으로서 upperincisal to Huxley line angle을 設定하였으며, upper incisal axis와 X-Y axis가 거의 平行狀態인것이 發見되었다.
A study was made of a method of rational assessment on the roentgeno-cephalogram in orthodontic practice. Fifty eight measurements were analyzed on the roentgeno-cephalograms of 50 male and 50 female Korean adults with the acceptable profile and the normal occlusion. The means and standard deviations of measurements were studied in male and female groups by various analytic methods, and the sex difference was examined statistically. The obtained data were compared with those of the Japanese and American standards by useing a Japanese adults standard polygon chart reported by lizuka and Ishikawa. Amongs of 58 measurements, 14 have been selected as statistically significant and clinically useful, and used to make a Korean adult standard polygon chart. The results obtained were as follows: 1. Standards for cphalometric analysis in Korean adults were obtained, and the polygon chart and cephalometric profilogram were also made by using the standards in order to apply to a clinical diagnosis. 2. The sex difference was recognized in linear measurements, but not in angular measurments. 3. In comparison with the American standards from Downs and Graber, the Korean showed significant differences in angle of convexity, mandibular plane angle, Y-axis angle, interincisal angle and lower incisor to mandibular plane angle. Thus, the Korean showed a more retruded chin position, convex facial type, than white people. 4. In comparison with the Japanese standards from Iizuka and Ishikawa, the Korean showed a significant similarity with the Japanese, especially in females. 5. Upper incisor to Huxely line angle, established as a new measurement, proved to be paralell to X-Y axis angle.
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