恒牙早期正常骨面型青少年上气道形态和舌骨位置的X线头影测量研究

目的:研究恒牙早期青少年上气道形态和舌骨位置.方法:对45名矢状和垂直骨面型正常、磨牙关系中性的恒牙早期青少年进行X线头影测量分析,并比较性别差异.结果:得出反映上气道深度和舌骨位置的14项X线头影测量正常值和变异范围,作为临床恒牙早期错患者的诊断、治疗参考.结论:恒牙早期上气道深度女性较男性偏大,以腭咽部显著;舌骨位置男性较女性偏前下.

A cephalometric study of upper airway form and hyoid position in early permanent dentition

Objective: To investigate upper airway form and hyoid position in early permanent dentition. Methods: Cephalometry was carried on a group of 45 youth in early stage of permanent dentition with class I molar relation and normal sagittal and vertical skeletal facial type. Upper airway depths and hyoid position were measured, and difference was compared between male and female. Results: 14 cephalometric norms of upper airway depth and hyoid position for early permanent dentition were established, which might be valuable reference for orthodontic clinic. Conclusion: In early stage of permanent dentition, upper airway depths in female are slightly larger than those in male, specially on uvula level; hyoid of male is positioned slightly more anterior inferiorly than that of female.