就此作者强调了前牙反(牙合)早期阻断矫治的重要性。

Authors emphasized that the interceptive orthodontic treatment of anterior crossbite at the early stage is very important.

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目的：探讨导弓式矫治器在乳替牙期前牙反治疗中的作用。

Objective To discuss the effect of the interocclusal lip arch appliance in curing the anterior teeth reverse overbite.

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结论：前牙反牙合使得上颌牙齿的错位及发育异常明显增加。

Conclusion: The possibility of ill-position and heteroplasia of teeth in maxilla increases in the patients with anterior crossbite.

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