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Speech compensation for prosthodontically created palatal asymmetries.

S L Hamlet1

  • 1University of Maryland, College Park.

Journal of Speech and Hearing Research
|March 1, 1988
PubMed
Summary

Prosthodontic alterations to the palate did not always result in speech sound compensation within one week. Speech adaptation varied, with the /s/ sound showing more consistent compensation for palatal asymmetries.

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Area of Science:

  • Speech Science
  • Prosthodontics
  • Phonetics

Background:

  • Alveolar and palatal contours are crucial for speech sound production.
  • Prosthodontic interventions can alter oral structures, potentially impacting articulation.
  • Understanding speech adaptation to oral changes is vital for functional outcomes.

Purpose of the Study:

  • To investigate the immediate effects of prosthodontic alterations on speech sound symmetry.
  • To evaluate the adaptation of /s/ and /l/ sounds following induced palatal asymmetries.
  • To determine the time course of speech compensation in response to prosthetic changes.

Main Methods:

  • Five subjects underwent prosthodontic alteration of alveolar and palatal contour.
  • Palatography was used to assess tongue-palate contact patterns for /s/ and /l/ sounds.
  • Speech adaptation was evaluated over a one-week period.

Main Results:

  • Palatographic evidence indicated incomplete compensation for prosthodontic changes within one week for both /s/ and /l/ sounds.
  • Compensation was more pronounced for the /s/ sound.
  • The /s/ sound adaptation involved maintaining the general air channel orientation despite palatal asymmetries.

Conclusions:

  • Immediate prosthodontic alterations can lead to persistent asymmetries in speech sound production.
  • /s/ sound articulation demonstrates a greater capacity for compensatory adjustments compared to /l/.
  • Further research is needed to understand long-term adaptation and optimize prosthetic design for speech clarity.

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