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目的分析正常人颅面部宽度生长发育的特点，探讨其发育规律。方法对２６名正常青少年每年同期摄取头颅定位后前位片，连续６年，并进行Ｘ线头影测量分析。结果（１）１３～１８岁，除前颅底宽、眶间距、鼻宽外，颅面部宽度多有性别差异，男性大于女性；随年龄增加，出现性别差异的项目数渐稳定。（２）相对于１８岁，１３岁时颅面部宽度的发育量均完成９２％以上；颅宽、前颅底宽、上面骨宽和上颌基骨宽及上下磨牙间宽度已基本完成；女性眶间距、全面宽、鼻宽的发育完成量大于男性。（３）男性乳突间距（后颅底宽）、鼻宽、全面宽的发育可以持续到１８岁；女性上颌基骨宽在１３岁时发育已接近完成，男性在１３～１７岁增宽，以１３～１４岁长幅最大，１７岁后趋于稳定。（４）在观察期内，牙弓宽度保持稳定，而下尖牙尖存在向心性聚合的趋势。结论本文结果可为正畸临床制定矫治计划提供参考。
Objective To analyze the characteristics of growth and development of craniofacial width in normal subjects and to discuss its developmental rules. Methods Twenty - six normal adolescents were enrolled in the anterior cranial radiographs at the same time of the year for 6 consecutive years, and their cephalometric measurements were analyzed. Results (1) The age of 13 ~ 18 years old, except the anterior cranial base width, orbital distance, nasal width, the craniofacial width more sex differences, men than women; with age, the number of gender differences in the project gradually stabilized. (2) Compared with the age of 18, the development of the craniofacial width at the age of 13 was over 92%. The width of the skull, the width of the anterior skull, the width of the maxilla and the width of the maxillary base and the width of the upper and lower molars were basically completed. Pitch, full width, nose wide developmental completion than male. (3) The mastoid pitch (posterior cranial base width), nose width, total width and width can last up to 18 years old. The maxillary base width of female is close to completion at 13 years old. The width of male is widened from 13 to 17 years old, To 13 to 14-year-old long maximum, after the age of 17 tends to be stable. (4) During the observation period, the dental arch width remained stable, while there was a tendency for the apical cusp to polymerize towards the heart. Conclusion The results of this paper may provide a reference for orthodontic clinical planning.