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KMID : 1036820140190040540
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Communication Sciences & Disorders
2014 Volume.19 No. 4 p.540 ~ p.550
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Comparison of Speech Motor Function, Articulation, and Phonological Characteristics of Children with and without Palatine Tonsil Hypertrophy
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Song Yun-Kyung
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Abstract
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Objectives: Palatine tonsil hypertrophy changes the shape of the vocal tract, which can cause adverse an effect on speech sound production. The purpose of this study was to investigate speech motor function and articulation, along with the phonological characteristics of children with palatine tonsil hypertrophy (TH) and typically developing children (TD), to compare these areas before and after tonsillectomy, and to examine the correlation between diadochokinesis (DDK) and the percentage of consonants correct (PCC) in TH.
Methods: Forty TH and 40 TD, aged 60-83 months, were measured for DDK performance and with the Assessment of Phonology & Articulation for Children (APAC). The 40 TH were tested again at 6 weeks after tonsillectomy. An independent t-test, paired t-test, and χ2-test were conducted to determine whether there were significant differences between the groups.
Results: The results showed that the DDK and PCC of TH were significantly lower than those of TD, and the number of children who produced phonological processes (interdentalization of fricative, typical intersyllabic cluster simplification, affrication or palatalization) was significantly higher in TH than in TD. But there were no significant changes in PCC and phonological processes in TH after tonsillectomy.
Conclusion: These results suggest that the modification of vocal tract related with palatine tonsil hypertrophy can cause adverse effects on speech sound production and that these effects can persist 6 weeks after tonsillectomy.
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KEYWORD
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Palatine tonsil hypertrophy, Diadochokinesis, Percentage of consonants correct, Phonological process
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