Nasalance Scores of Children With Repaired Cleft Palate Who Exhibit Normal Velopharyngeal Closure During Aerodynamic Testing Purpose To determine if children with repaired cleft palate and normal velopharyngeal (VP) closure as determined by aerodynamic testing exhibit greater acoustic nasalance than control children without cleft palate. Method Pressure-flow procedures were used to identify 2 groups of children based on VP closure during the production of ... Research Note
Research Note  |   August 01, 2013
Nasalance Scores of Children With Repaired Cleft Palate Who Exhibit Normal Velopharyngeal Closure During Aerodynamic Testing
 
Author Affiliations & Notes
  • David J. Zajac
    University of North Carolina at Chapel Hill
  • Correspondence to David J. Zajac: david_zajac@dentistry.unc.edu
  • Editor: Carol Scheffner Hammer
    Editor: Carol Scheffner Hammer×
  • Associate Editor: Julie Liss
    Associate Editor: Julie Liss×
Article Information
Special Populations / Genetic & Congenital Disorders / Speech, Voice & Prosody / Research Notes
Research Note   |   August 01, 2013
Nasalance Scores of Children With Repaired Cleft Palate Who Exhibit Normal Velopharyngeal Closure During Aerodynamic Testing
American Journal of Speech-Language Pathology, August 2013, Vol. 22, 572-576. doi:10.1044/1058-0360(2013/12-0049)
History: Received June 17, 2012 , Accepted February 3, 2013
 
American Journal of Speech-Language Pathology, August 2013, Vol. 22, 572-576. doi:10.1044/1058-0360(2013/12-0049)
History: Received June 17, 2012; Accepted February 3, 2013

Purpose To determine if children with repaired cleft palate and normal velopharyngeal (VP) closure as determined by aerodynamic testing exhibit greater acoustic nasalance than control children without cleft palate.

Method Pressure-flow procedures were used to identify 2 groups of children based on VP closure during the production of /p/ in the word hamper: (a) children with repaired cleft palate and normal VP closure (n = 23) and (b) controls without cleft palate and with normal VP closure (n = 16). Acoustic nasalance scores were obtained for all children during the production of syllables with high-pressure consonants and sentences with low-pressure consonants (i.e., low-pressure sentences).

Results Nasalance scores were generally higher for children with repaired cleft palate and normal VP function as compared to controls; however, a significant difference occurred only for low-pressure sentences (p = .005).

Conclusion Results partially support a pressure-sensitive theory of VP function in that some children with repaired cleft palate may achieve VP closure during the production of high-pressure consonants but fail to do so during the production of vowels and low-pressure consonants. Clinical implications are discussed.

Acknowledgments
This project was supported by Award R56DE018004 from the National Institute of Dental and Craniofacial Research. The content is solely the responsibility of the author and does not necessarily represent official views of the National Institute of Dental and Craniofacial Research or the National Institutes of Health. The author wishes to thank Amanda Lloyd and Caitrin Plante for assistance with data collection.
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