Effect of maxillary distraction osteogenesis on velopharyngeal function: a pilot study.
Effect of maxillary distraction osteogenesis on velopharyngeal function: a pilot study.
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DOI：
10.1067/moe.2002.123827
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发表时间：
2002-05
期刊：
影响因子：
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通讯作者：
K. Harada;Y. Ishii;M. Ishii;Humiko Imaizumi;Michiko Mibu;K. Omura
中科院分区：
文献类型：
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作者：
K. Harada;Y. Ishii;M. Ishii;Humiko Imaizumi;Michiko Mibu;K. Omura
目的研究应用刚性外牵引系统行上颌骨牵引成骨术的腭裂患者手术前后咽功能的变化。研究设计：对6名唇腭裂患者进行上颌骨牵引后至少12个月的随访。术前和术后均进行头颅侧位平片和对比片检查，由同一位经授权的语言治疗师在同一时间点进行语言评估。结果前鼻棘牵张量为7.4 ~ 15.0mm，平均11.7mm;上颌骨牵引后，鼻咽深度和软腭长度均增加，但鼻咽深度/软腭长度的需求比也增加。虽然上颌骨牵引后，患者的腭咽闭合评分下降了几个点，但除上颌骨牵引量为15.0 mm的患者外，所有患者的高鼻音评分均保持不变。结论上颌骨牵引小于15 mm可能不会显著影响腭裂患者的腭咽功能。
OBJECTIVE The purpose of this study was to examine preoperative and postoperative changes of velopharyngeal function in cleft patients who underwent maxillary distraction osteogenesis using the Rigid External Distraction System. STUDY DESIGN Six cleft patients followed for a minimum of 12 months after maxillary distraction were examined. Plain and contrast lateral-cephalograms were obtained preoperatively and postoperatively, and speech evaluation was performed by the same authorized speech therapist at the same time points. RESULTS The mean distraction amount at the anterior nasal spine was 11.7 mm (range, 7.4 mm - 15.0 mm). Both the nasopharyngeal depth and velar length increased after maxillary distraction, but the need ratio (nasopharyngeal depth/velar length) also increased after distraction. Although scores for velopharyngeal closure dropped a few points after maxillary distraction, the rating for hypernasality remained unchanged in all patients but the patient whose distraction amount was 15.0 mm. CONCLUSION These results suggest that maxillary distraction of less than 15 mm may not markedly affect velopharyngeal function in cleft patients.