Dental arch expansion appliance for 25 patients with mandibular arch stenosis showed that semi-fixed mandibular lingual arch expansion had good effect and could be used to expand mandibular arch.
对25例下牙弓狭窄患者的扩弓矫治表明，下颌舌侧半固定扩弓矫治器的扩弓效果良好。
METHODS: Using a simple semi-fixed lingual arch combined with the edgewise technology to correct 8 cases with linguoclination or buccoclination of the mandibular molars.
方法：对8例下颌磨牙颊向或舌向倾斜错位的患者，采用简易半固定舌弓配合方丝弓矫治技术在矫治初期进行矫治。
PURPOSE: to study the effect of maxillary and mandibular lip bumper on tooth and dental arch in late mixed dentition.
目的：研究上下颌唇挡同时应用对替牙晚期儿童牙牙合的影响。
Objective: To evaluate the effect of segmental arch technique and implant reinforcing anchorage on depressing the elongated opposed teeth for preparing enough space for mandibular dental implant.
目的：探讨片段弓技术联合部种植支抗压低上颌磨牙，为下颌牙缺失的种植修复提供足够的合间距离。
Objective:To evaluate the effect of segmental arch technique and implant reinforcing anchorage on depressing the(dongated opposed teeth for preparing enough space for mandibular dental implant.
目的∶采用种植体支抗直接牵张上颌骨骨缝成骨技术探索颅颌面骨发育不足治疗新方法，观察在牵引力的作用下支抗种植体的骨结合情况。
Objective:To evaluate the effect of segmental arch technique and implant reinforcing anchorage on depressing the(dongated opposed teeth for preparing enough space for mandibular dental implant.
目的∶采用种植体支抗直接牵张上颌骨骨缝成骨技术探索颅颌面骨发育不足治疗新方法，观察在牵引力的作用下支抗种植体的骨结合情况。
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