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替牙期前牙深反覆牙合（下切牙牙冠反覆盖上切牙牙冠１／２以上者），由于过陡的Ｓｐｅｅ氏曲线和／或反向的上颌纵牙合曲线，致使当反牙合解除后，因切牙早接触或咬合创伤而难以降牙合（逐次磨低牙合垫）。为解决这一问题，笔者利用上颌牙合垫矫治器配合下颌（或上、下颌）２
Orthodontic tooth deep before repeated occlusion (incisor crown repeatedly covered with incisor crown more than 1/2), due to steep Spee's curve and / or reverse the maxillary longitudinal occlusion curve, resulting in anti-occlusal After lifting, because of incisors early contact or occlusal trauma and difficult to reduce occlusal (one by one low friction pad). To solve this problem, I use the maxillary occlusion pad appliance with mandibular (or upper and lower jaw) 2