目的： 研究采用牵引成骨技术治疗由于下颌骨骨量不足造成的牙颌面畸形。
The mandibular deformities caused by bone deficiency can be effectively corrected with the technique of distraction osteogenesis.
前言：目的：研究牵引成骨技术在矫正下颌正中陈旧性骨折畸形治疗中的应用。
Objective: To investigate the application of distraction osteogenesis technique in old chin splintered fracture.
前言：目的：研究牵引成骨技术在矫正下颌正中陈旧性骨折畸形治疗中的应用。
Objective: To investigate the application of distraction osteogenesis technique in old chin splintered fracture.
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