PMID: 11321802Apr 27, 2001Paper

A clinical and physiological evaluation of the unilateral occlusal deficit and its RPD treatment--a four-year follow-up study

Kōkūbyō Gakkai zasshi. The Journal of the Stomatological Society, Japan
K Kawashita

Abstract

The aim of this study was to evaluate the longitudinal clinical and physiological changes in masticatory function for unilateral shortened arch, partially edentate patients by treatment with removable partial denture prostheses from the denture insertion over approximately four years of observation. The present follow-up study was conducted using objective findings and standpoints of unilateral occlusal deficit case, especially the clinical and physiological relation between musculature activity and changes of load center location periodically. The changes in masticatory functions by the muscle activity observed in EMG, and the occlusal loads and distributions throughout the arc, were surveyed by the modified Prescale system. The findings were statistically analyzed by using a sophisticated computer system that was developed by our research institute. The results were as follows: i) The functional musculature of unilateral shortened arc patients was clearly activated by using the unilateral RPD, and the improvements continued for four years after initial denture insertion. ii) The activation of masticatory muscle by denture-wearing over time, was in edentate side masseter, although the amplification of anterior temporal muscle ...Continue Reading

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