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Methods: 12 patients were treated with bonded RME appliance to expanse the maxillary arches and with vertical pull chincap to augment anchorage. 方法：通過對 12 例患者在擴弓及內收切牙時應用牙弓夾板式擴弓矯治器及高位牽引的頭帽頦兜加強支抗。