Objective: To explore possible alterations in velopharyngeal function after maxillary advancement.
Methods: Ten patients (3 secondary deformity of cleft palate, 7 maxillary retrusion) had maxillary advancement surgery. Pre- and post-operative examinations consisted of lateral cephalometric radiography, nasopharyngoscopy and speech recording.
Results: There was no significant changes on speech or velopharyngeal competence after maxillary advancement. Cleft palate patients appeared slight hypernasality and nasal emission.
Conclusions: Good velopharyngeal function pre-operation is not affected after the surgery of maxillary advancement.