Buschang P H, De La Cruz R, Viazis A D, Demirjian A
Baylor College of Dentistry, Department of Orthodontics, Dallas, Texas.
Am J Orthod Dentofacial Orthop. 1993 Dec;104(6):539-43. doi: 10.1016/S0889-5406(05)80437-8.
This investigation quantifies childhood and adolescent growth changes of the upper and lower nasal dorsum and evaluates various aspects of the persons' morphology that relate to shape changes of the dorsum. A longitudinal sample of 37 French-Canadian girls, each having cephalograms at 6, 10, and 14 years of age, was evaluated. The 6- to 10-year interval was chosen to represent childhood growth; the 10- to 14-year interval represented adolescent growth. The upper dorsum rotates upward and forward (counterclockwise) approximately 10 degrees between 6 to 14 years of age. The lower dorsum shows both downward and backward (clockwise) and upward and forward (counterclockwise) rotation average childhood and adolescent changes in angulation were not significant. The results clearly indicate that changes in the nasal dorsum are most closely related to angulation changes of the lower dorsum, particularly during adolescence. The lower dorsum rotates downward and backward in persons who show greater vertical and less horizontal growth changes. Rotational changes of the lower dorsum are most closely related with vertical changes at pronasale.
本研究对儿童和青少年时期鼻背上下部的生长变化进行了量化，并评估了与鼻背形状变化相关的人体形态学的各个方面。对37名法裔加拿大女孩的纵向样本进行了评估，她们每人在6岁、10岁和14岁时都有头颅侧位片。选择6至10岁的时间段来代表儿童期生长；10至14岁的时间段代表青春期生长。在6至14岁之间，鼻背上部向上和向前（逆时针）旋转约10度。鼻背下部显示出向下和向后（顺时针）以及向上和向前（逆时针）的旋转，儿童期和青春期角度的平均变化不显著。结果清楚地表明，鼻背的变化与鼻背下部的角度变化关系最为密切，尤其是在青春期。在垂直生长变化较大而水平生长变化较小的人中，鼻背下部向下和向后旋转。鼻背下部的旋转变化与鼻前点的垂直变化关系最为密切。
