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KMID : 0917519980030010057
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Journal of Speech Sciences
1998 Volume.3 No. 1 p.57 ~ p.69
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The Effect of Speech Aids in Velopharyngeal Incompetency Patients
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Ko Seung-O
Shin Hyo-Keun
Kim Hyun-Gi
Hong Ki-Hwan
Seo Jeong-Hwan
Ko Do-Heung
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Abstract
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Velopharyngeal function refers to the combined activity of the soft palate and pharynx in closing and opening the velopharyngeal port to the required degree. In normal speech, during the production of oral consonant sounds elevation of the soft palate, along with the superior constrictor muscle, occludes the oropharynx from the nasopharynx. Inadequate velopharyngeal function caused by congenital or acquired insufficiency or incompetency may result in abnormal speech characterized by hypernasality, nasal emission and decreased intelligibility of speech due to weak consonant production. The speech aid is often helpful in improving the speech of individuals with velopharyngeal incompetency. In this article, the pathogenesis and treatment of velopharyngeal incompetence are discussed and a speech aid appliance that was constructed for the patient is described.
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KEYWORD
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velopharyngeal, hypernasality, speech aid, pathogenesis
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