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Related Experiment Videos

Velopharyngeal function following maxillary advancement.

J G McCarthy, P J Coccaro, M D Schwartz

    Plastic and Reconstructive Surgery
    |August 1, 1979
    PubMed
    Summary

    Maxillary advancement surgery in patients with craniofacial dysostosis did not cause velopharyngeal incompetence. This procedure improved speech and nasopharyngeal function, with only minor /s/ sound changes observed.

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    Area of Science:

    • Plastic Surgery
    • Craniofacial Surgery
    • Speech Pathology

    Background:

    • Patients with craniofacial dysostosis often present with velopharyngeal dysfunction.
    • Cleft palate patients are at higher risk for velopharyngeal incompetence after surgery.
    • Distinct anatomical features in craniofacial dysostosis may protect the velopharyngeal mechanism.

    Purpose of the Study:

    • To evaluate the effect of maxillary advancement on velopharyngeal function in patients with craniofacial dysostosis.
    • To assess changes in nasopharyngeal volume and velopharyngeal contact post-surgery.
    • To identify any resulting speech articulation changes.

    Main Methods:

    • Cephalometric analysis of 40 patients undergoing maxillary advancement.
    • Phonating cephalograms to assess velopharyngeal function.

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  • Clinical evaluation of speech articulation.

    • Main Results:

    • No instances of velopharyngeal incompetence were observed in the study group.
    • Hyponasality resolved in 5 patients with Crouzon's disease.
    • Cephalometric studies showed increased nasopharyngeal volume and a wider hard and soft palate angle.
    • Phonating cephalograms indicated more physiological velopharyngeal contact post-advancement.
    • The primary articulation change noted was in /s/ sound production.

    Conclusions:

    • Maxillary advancement is a safe procedure regarding velopharyngeal function in craniofacial dysostosis.
    • The surgery can improve nasopharyngeal dimensions and speech quality.
    • Dentoalveolar changes, particularly affecting /s/ sounds, are the main articulatory sequelae.