Some scholars deem that early UPXB mostly belongs to functional mandible deviation and correction of it through maxillary expansion is associated with a good change in mandible deviation.
有学者认为早期单侧后牙反牙合患者下颌偏斜大部分属于功能性偏斜，当采用扩大上颌牙弓矫治后牙反牙合后，下颌功能性偏斜可得到纠正，颜面不对称程度可以改善。
Some scholars deem that early UPXB mostly belongs to functional mandible deviation and correction of it through maxillary expansion is associated with a good change in mandible deviation.
有学者认为早期单侧后牙反牙合患者下颌偏斜大部分属于功能性偏斜，当采用扩大上颌牙弓矫治后牙反牙合后，下颌功能性偏斜可得到纠正，颜面不对称程度可以改善。
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