Abstract
Previous studies have sought to establish the significance of various parameters inheight of vertical dimension and on palatal plates. The investigation was conducted on 16 adultmen as subjects who wore occlusal splints and plates. Analysis of utterance patterns were revealedon Sound Spectrogram and Vowel-Consonant-Vowel (VCV) Japanese words were segmented andquantified. A series of experiments was determind:(1) In case where [i] and [u]were produced High Vertical Dimension, the Vowel Formant Frequencies were significantly influenced.(2) In caseof Japanese five vowels which belong to consonant environments, figures of Formant Frequencywere similar in F 1-F 2 cordinates.(3) Time Duration of consonants were somewhat longer, especiallythe part of Implotion fluctuated widely. Interaction of splint and plate was significantlyremarkable in [i] after or before [k], and the less conspicuous interaction [u] was in environmentof [p] and [k].
