The Changes of Mandibular Jaw Movements in Pronunciation. The Effects by Bite Rising.

This study was carried out in order to find out whether a mandibular position in pronunciation was effective in determination of the vertical dimension.Cases of lost vertical dimension have often been seen in prosthetic treatment.It is significant that these cases obtained correct vertical dimension and some methods have been reported. The advantage of pronunciation is used clinically.The subjects bites were raised to a level above the free-way space by the bite plates, and the mandibularposition in pronunciation was recorded and analyzed by Bio PAK System.The difference between with and without bite plate were observed.The mandibular position in pronunciation has intra-individual variations, the greatest distance was decreased by the bite plate, and the mandibular positions without the bite plate were kept.