常见例句双语例句Objective:The purpose of this study was to approach the feasibility of the removable appliance combinated with buccal shield to treat the unilateral posterior crossbite.目的：探讨附颊屏的垫矫治器进行单侧后牙扩弓，治疗单侧后牙反的可行性。 返回 buccal crossbite