Abstract
In order to evaluate the kinematic function and the coordinated movement of articulatory organs, attention was focused on the palatal form in various factors related to pronunciation abilities with complete dentures. After an experimental palatal plate was inserted into 13 natural dentitions ranging from 21 to 24 years old, muscular discharge of tongue muscules, tongue movement and mandibular movement during pronunciation were recorded longitudinally. Data was comparatively evaluated with that before insertion of the experimental palatal plate, and the following conclusions were obtained:This study has been established that changes in muscular discharge of tongue muscles, tongue movement and mandibular'movement during pronunciation before and after insertion of an experimental palatal plate, are fast in some degree in recovering of kinematic function and the coordinated movement among articulatory organs, comparing with them of before pronunciation.
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