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

doi:10.19438/j.cjoms.2020.05.009

Abstract

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

CLC Number:

R782.2

MOU Szu-hsuan, ZHU Yan-fei, DU Chang-xin, WANG Xue-chun, WU Yan-qi, MEI Peng, WANG Xu-dong, ZHU Min. 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[J]. China Journal of Oral and Maxillofacial Surgery, 2020, 18(5): 427-433.

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