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Intraoral pressure and velopharyngeal function

R Mayo1, D W Warren, D J Zajac

  • 1Division of Speech and Hearing Sciences, School of Medicine, UNC Craniofacial Center, Chapel Hill, North Carolina 27599-7450, USA. rmayo.dentce@mhs.unc.edu

The Cleft Palate-Craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association
|July 31, 1998
PubMed
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Velopharyngeal inadequacy impacts speech breathing. Inadequate velopharyngeal closure led to increased nasal airflow and reduced pressure during speech, suggesting phonetic context and learning influence compensatory responses.

Area of Science:

  • Speech-language pathology
  • Craniofacial anomalies
  • Respiratory physiology

Background:

  • Velopharyngeal (VP) inadequacy can affect speech production.
  • Understanding respiratory compensations is crucial for managing VP dysfunction.

Purpose of the Study:

  • To investigate how velopharyngeal inadequacy influences respiratory compensations during speech.
  • To analyze speech breathing patterns in individuals with cleft lip/palate.

Main Methods:

  • Utilized the pressure-flow technique to measure oral pressure, airflow, and timing during /p/ production.
  • Assessed 82 subjects with cleft lip/palate, divided into adequate and inadequate VP closure groups.

Main Results:

  • Individuals with inadequate VP closure showed increased nasal airflow (p < .01).

Related Experiment Videos

  • The area under the pressure curve decreased significantly in the inadequate VP group (p = .04).
  • Peak intraoral pressure reduction was not statistically significant.

    • Conclusions:

    • Phonetic context appears to influence compensatory speech breathing in velopharyngeal inadequacy.
    • Findings suggest that learning also plays a role in compensatory outcomes for VP inadequacy.