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한국인 성인의 상악중절치 형태와 크기에 관한 통계학적 연구
백기석,김명국 대한구강해부학회 1988 대한구강해부학회지 Vol.12 No.1
Authors examined the morphology and sizes in the maxillary central incisor from Korean adults and the following conclusions have been drawn. 1. An observation on the shape of labial surface in maxillary central incisors was as follows. 1) Labial surface with straight mesial margin, curved distal margin to the incisal edge and obtuse distal cutting angle was 78.80%. 2) Nearly rectangular form was 11.96%. 3) Triangular form was 9.20%. 2. The percentages on the shape of lingual surface in maxillary central incisors. 1) Lingual surface with faint and smooth cingulum (0 type) was 60.74%. 2) Lingual surface with invaginated cingulum (V type) was 23.99%. 3) Lingual surface with one small tubercle projecting to the incisal edge from cingulum . (W type) was 12.75%. 4) Lingual surface with two small tubercles projecting to the incisal edge from cingulum (M type) was 2.52%. 3)The sizes of the maxillary central incisor were as follows. Male Female Crown length 11.22mm 10.45mm Crown width 8.47mm 8.31mm Cervical width 6.84mm 6.63mm Crown thickness 7.10mm 6.78mm Cervical thickness 6.62mm 6.43mm Mesial curvature 2.75mm 2.47mm Distal curvature 2.22mm 2.03mm 4. In comparison with wheeler's data, no significant difference was found, but mesial curvature and distal curvature were larger, crown length was shorter in wheeler's data.