但前徙幅度限于颊骨厚度，非常有限，仅可应用于轻度舌根后气道狭窄的患者。

But before, the change residence scope limited to the cheekbone thickness, is limited, only may apply after the mild root of the tongue gas channel narrow patient.

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结论 下颌前突组，（1） 舌骨向下移位，舌背上抬，舌根向后移动。

Conclusions Of the patients with mandibular prognathism, 1. the hyoid bone shifted downward, the dorsum lingua raised and the base of the tongue moved posteriorly;

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