Maxillary Arch Dimensions and Spectral Characteristics of Children With Cleft Lip and Palate Who Produce Middorsum Palatal Stops PurposeThe purpose of this study was twofold: (a) to determine maxillary arch dimensions of children with repaired cleft lip and palate (CLP) who produced middorsum palatal stops and (b) to describe some spectral characteristics of middorsum palatal stops.MethodMaxillary arch width, length, and height dimensions and first spectral moments of /t/-/k/ ... Article
Article  |   December 01, 2012
Maxillary Arch Dimensions and Spectral Characteristics of Children With Cleft Lip and Palate Who Produce Middorsum Palatal Stops
 
Author Affiliations & Notes
  • Lucia Cevidanes
    Craniofacial Center, University of North Carolina at Chapel Hill
  • Sonam Shah
    Craniofacial Center, University of North Carolina at Chapel Hill
  • Katarina L. Haley
    University of North Carolina at Chapel Hill
  • Correspondence to David J. Zajac: david_zajac@dentistry.unc.edu
  • Editor: Jody Kreiman
    Editor: Jody Kreiman×
  • Associate Editor: Kate Bunton
    Associate Editor: Kate Bunton×
Article Information
Speech, Voice & Prosodic Disorders / Special Populations / Genetic & Congenital Disorders / Speech
Article   |   December 01, 2012
Maxillary Arch Dimensions and Spectral Characteristics of Children With Cleft Lip and Palate Who Produce Middorsum Palatal Stops
Journal of Speech, Language, and Hearing Research, December 2012, Vol. 55, 1876-1886. doi:10.1044/1092-4388(2012/11-0340)
History: Received December 9, 2011 , Accepted April 12, 2012
 
Journal of Speech, Language, and Hearing Research, December 2012, Vol. 55, 1876-1886. doi:10.1044/1092-4388(2012/11-0340)
History: Received December 9, 2011; Accepted April 12, 2012
Web of Science® Times Cited: 2

PurposeThe purpose of this study was twofold: (a) to determine maxillary arch dimensions of children with repaired cleft lip and palate (CLP) who produced middorsum palatal stops and (b) to describe some spectral characteristics of middorsum palatal stops.

MethodMaxillary arch width, length, and height dimensions and first spectral moments of /t/-/k/ contrast words were determined for three groups of children ages 7–11 years: (a) with CLP who were clinically judged to produce middorsum palatal stops (n = 5), (b) with CLP but without middorsum palatal stops (n = 6), and (c) typically developing controls (n = 8). Validity of clinical judgments of middorsum palatal stops was assessed by adult listeners via forced-choice identification of /t/-/k/ contrast words.

ResultsListeners confirmed production of middorsum palatal stops for 4 of 5 children with CLP. These children had (a) the narrowest anterior maxillary arch width relative to posterior arch width (p = .011) and (b) the lowest first spectral moment for /t/ targets (p = .001) and the lowest /t/-/k/ difference (p = .010).

ConclusionMiddorsum palatal stops may occur in children with repaired CLP in response to limited anterior oral cavity space due to restricted (or collapsed) maxillary arches. First spectral moment characteristics of middorsum palatal stops are consistent with backed lingual placement during stop release.

Acknowledgments
The project described was supported by National Institute of Dental and Craniofacial Research Grant R56DE018004. The content is solely the responsibility of the authors and does not necessarily represent official views of the National Institute of Dental and Craniofacial Research or the National Institutes of Health. We would like to thank Caitrin Plante and Andrew Jennison for assistance with data collection and analysis, respectively.
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