The impact of orthognathic surgery on velopharyngeal function by evaluating speech and cephalometric radiographs

: Maxillary retrognathia is a well-known consequence of abnormal facial growth in patients with cleft lip and palate. Orthognathic surgery improves facial appearance and occlusion, but may induce velopharyngeal insufficiency. The aim of the study was to evaluate the effect of orthognathic surgery on velopharyngeal function using speech analysis and lateral cephalometric radiographs.