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  • Title: Velopharyngeal function following maxillary advancement.
    Author: McCarthy JG, Coccaro PJ, Schwartz MD.
    Journal: Plast Reconstr Surg; 1979 Aug; 64(2):180-9. PubMed ID: 451077.
    Abstract:
    In a series of 40 patients who had maxillary advancements, none developed velopharyngeal incompetence. Unlike the cleft palate patient who is more at risk, there are distinct anatomical characteristics in craniofacial dysostosis which favor maintenance of the integrity of the velopharyngeal mechanism. Hyponasality was eliminated in 5 patients with Crouzon's disease. On cephalometric study, it was observed that after maxillary advancement the nasopharyngeal volume was expanded and the angle formed by the hard and soft palates was increased. On phonating cephalograms, the velopharyngeal contact became more physiological after maxillary advancement in the craniofacial dysostosis patient. The only postoperative articulatory changes after maxillary advancement were in the production of the /s/ sound, which is particularly sensitive to changes in dentoalveolar relationships.
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