全部床義歯装着者のS発音時の舌の動態に関する研究

概要

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Tongue movement of complete denture wearers was examined for /s/ and /∫/ by means of dynamic palatography. The data as well as those changes with day were compared with those of normal speaking subjects with natural dentition. 1. Tongue of complete denture wearers contacted with the hard palate sooner than that of the normal speaking subjects did, but the timing of forming maximum constriction at the anteriorpart of the hard palate was the same, whereas the timing of releasing the maximum constriction was later in the former. 2. Tongue movement of complete denture wearers was subjected to be under the influence of the adjacent vowel in both temporal and spatial aspects, particularly at the on-gride of the fricative. 3. The tongue-palate contact patterns for the maximum constriction had specific left-right asymmetries in each subject, which showed no significant changes with day. 4. Tongue movement of complete denture wearers showed specific temporal asymmetries in each subject which didn't change with day, and tongue moved slightly at the midtime of the frication, the tongue tended to move away from contact. 5. Variability of tongue-palate contact patterns for the maximum constriction became smaller with day, which can be used to estimate the degree of speech adaptation to the denture.
社団法人日本補綴歯科学会の論文
1988-08-01