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Lee, Dong-Joo,Rinchuse, Donald J. 대한치과교정학회 1993 대한치과교정학회지 Vol.23 No.1
1. In the upper arch, the "bracket heights" of the incisors in the Caucasian were significantly shorter, but the bracket heights of molars in the Caucasian were longer than those in the Korean. In the lower arch, all bracket heights except that of the anterior teeth in the Caucasian were significantley shorter. These observations indicated that the clinical crown length might be shorter in the Caucasian than that in the Korean. 2. The crown angulation of the upper second molar in the Caucasian was significantly more upright than in the Korean. 3. The crown inclination of the upper and lowere anterior teeth in the Korean were more labially incllined and the posterior teeth in the Korean were less lingually inclined that in the Caucasian. 4.In both the Caucasian and the Korean, the relative differences of thickness in each tooth varied by similar amounts. 5. The rotation of the molars in the Korean were slightly greater. The shape of the dental arch might be different between Korean and Caucasian.