Objective: To study the difference of upper airway form and hyoid position of the children with different vertical facial types in mixed dentition.

目的：比较替牙期不同垂直骨面型儿童上气道形态和舌骨位置的差异，为临床诊疗和颅面部生长发育的研究提供一定的参考依据。

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Conclusion: in mixed dentition, there had statistical differences in upper airway form and hyoid position in children with different vertical facial types.

结论：替牙期不同垂直骨面型儿童上气道形态，舌骨位置存在差异。

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Objective: To establish the cephalometric standards for in ci sal jaw morphology in the subjects with normal occlusion and different vertical facial skeletal types.

目的：建立不同垂直骨面型正常牙合人切牙区颌骨形态结构的正常值。

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