Abstract
The amounts of disocclusion during protrusive movement were measured using leaf gauge, on study catsts of 18 young subjects with normal dentition and free of TMD, mounted on a semiadjustable articulator. The results were compared statistically with those of adult subjects reported by Haramoto, et al. Statistical difference between the two populations was found on first and second molars but not on premolors, at the 99% level of confidence. The reasons for the significant differences between the two populations were discussed. The statistical difference of sagittal condylar path inclinations which existed between the two was attributed as one of the reasons. However, the residual reason was not clarified.
