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- Rigid环Rigid ring
- α-rigid环α-rigid ring
- 目的:通过研究行颅外支架式上颌骨牵引成骨术(rigid external distraction,RED)的唇腭裂患者治疗前后元音[i]和擦音[s]的声学特性变化,分析上颌骨牵引成骨术对患者腭咽闭合功能和舌位的影响。PURPOSE:This study was conducted to evaluate the acoustic characteristic changes of the vowel [i] and fricative [s] after maxillary distraction osteogenesis by using a rigid external distraction device (RED) in cleft lip and palate patients with maxillary dysplasia.
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