抄録
We placed full arch bite plates in the mandible of four adult subjects who had no apparent problems with pronunciation or hearing, and raised the vertical dimension of occlusion 4 and 8 mm. We then investigated the effect on static palatograms. We found that as the vertical dimension was elevated, there was a tendency for the tongue to retrude for vowel and fricatives, and there was a tendency for the antero-posterior width of the tongue contact to narrow for plosives and affricate, which form a closure zone.
