China Journal of Oral and Maxillofacial Surgery ›› 2020, Vol. 18 ›› Issue (5): 427-433.doi: 10.19438/j.cjoms.2020.05.009

• Original Articles • Previous Articles     Next Articles

Comparative study of modified tooth-borne anterior maxillary segmental distraction osteogenesis and Le Fort I osteotomy on velopharyngeal structure changes in cleft lip palate patients

MOU Szu-hsuan, ZHU Yan-fei, DU Chang-xin, WANG Xue-chun, WU Yan-qi, MEI Peng, WANG Xu-dong, ZHU Min   

  1. Department of Oral and Craniofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology. Shanghai 200011, China
  • Received:2020-03-25 Revised:2020-05-14 Online:2020-09-20 Published:2020-10-28

Abstract: PURPOSE: To compare the effect of anterior maxillary segmental distraction osteogenesis (AMSDO) and Le Fort I osteotomy on velopharyngeal structure in cleft lip palate(CLP) patients. METHODS: Thirty-two patients with CLP were divided into AMSDO group (n=16) and Le Fort I osteotomy group (n=16). Lateral cephalograms were taken before, and 6 months after treatment for analysis of velopharyngeal structure changes. SPSS 12.0 software package was used to compare the pre- and post-operative changes. RESULTS: No significant difference was found in AMSDO group; In Le Fort I osteotomy group, pharyngeal depth, velar angle and need ratio were found significantly different with an average increase of 3.13 mm, 4.3° and 0.11, respectively(P<0.05). CONCLUSIONS: AMSDO has minimal effect on velopharyngeal structure. Results in Le Fort I group suggest possible deterioration of velopharyngeal function and adaptive compensation of the velopharyngeal structure.

Key words: Cleft lip palate, Velopharyngeal structure, Maxillary hypoplasia, Distraction osteogenesis, Le Fort I osteotomy

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