口底に発現した類皮嚢胞の一例とその音声楽的観察

概要

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We encountered a patient with dermoid cyst the size of a hen's egg on the oral floor. Since the tongue was found to be displaced upward and phonation lacked clarity and naturalness at the initial examination, the patient was evaluated by phonetic-linguistic studies before and after the operation.<BR>Concerning the consonants of the sounds "na" and "ni", the preceeding consonant wave was shortened and distorted before the operation, but was made normal after it. With regard to vowels, there was a difference in the intensity of the formant frequency between before and after the operation. The site and the size of the cyst, and associated changes in the position and motility of the tongue are considered to be closely involved in the improvements in the preceeding consonants and changes in the formant frequency.
社団法人日本口腔外科学会の論文