咬合高径の変化が発音時の舌運動と下顎運動に及ぼす影響 : 第1報正常有歯顎者

概要

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The purpose of this study was to investigate the influence of the vertical dimension on pronunciation,Tongue pressures, mandibular movements and speech sounds; were simultaneously recorded and analyzed for the following sounds : /asa/, /asi/, /ahi/, /aci/, /aki/, /ake/ and /ari/ when the vertical dimension was normal and increased by 4mm, 8mm and 12mm beyond the normal vertical dimension at the incisor. The results were as follows : 1. The maximum tongue pressures tended to be smaller on for /asa/ than other sounds and be greater in more posterior palate Nut the normal vertical dimension. 2. The maximum tongue pressures changed differently among subjects, sounds and measuring sites, but tended to decrease in anterior palate for any sounds and increase in posterior palate with increases in vertical dimensions. 3. Tongue contacts usually started from posterior palate to anterior palate before the end of the preceding vowel, and tongue pressures usually came up to maximum between the end of the preceding vowel and the start of the following vowel. But the timings between sounds and tongue pressures were not evidently influenced with increasing vertical dimensions. 4. It was found that changes in maximum tongue pressures with increasing vertical dimensions were related to those of simultaneous marndibular movements.
日本補綴歯科学会の論文
1991-02-01