1984 Volume 22 Issue 4 Pages 915-926
Long term observation and oral rehabilitation were made on the case of an ectodermal dysplasia with almost all teeth missing except for two teeth, upper left deciduous 2nd molar and right permanent canine. Electromyographic evaluations of the masticatory muscles following oral rehabilitaiton were also performed.
The results obtained were as follows:
1. Some functional disturbances, such as tongue thrusting, abnormal mastication and swallowing, were observed in the patient. However, these were improved considerably following myo-functional training.
2. By wearing dentures, masticatory rhythm, synchronization on clenching, and EMG activity of the masticatory muscles of the patient became much balanced.
3. Silent periods were noticed in the electromyograph, during tooth tapping after wearing dentures.
4. Compared with the normal children, little difference was noticed in the case on the occlusal forces after placement of the dentures.
