Abstract
Prior to the clinical application of Pantronic, a device for the analysis and measurement of mandibular movements, we recorded analyzed mandibular movements in 46 subjects, with this device attached, in their 20's to 30's with no subjective abnormalities in jaw function. The mean measurements were obtained for various items displayed digitally. In the subjects with a protrusive angle of 20°C or less, superior wall insert tended to be too small to measure. In the range of immediate side shift between 0.6 and 1.2mm, rear and top walls with directions other than 0°C appeared on the display. Such a tendency in humans was similar to our previous report. Moreover, we studied jaw movements using the pantographic reproducibility index which showed no remarkable characteristics. The relationship of the index to measurement items requires further study.
