ABSTRACT
Treatment of class II division 1 malocclusion has a very important place in orthodontics because of the high frequency of this group of anomalies, as well as its special effect upon the face. The functional jaw orthopedics is of a special importance with its wide choice of orthodontic devices of which the Balter's Bionator can be put apart. The objective of this study was to gnatometrically check the efficiency of Bionator in the treatment of class II/division 1 malocclusions. Ten patients of both sexes aged from 10 to 12 years were examined and diagnosed in accordance with the clinical criterion. The following are conclusions: After twelve month of treatment, class I sagittal occlusal relation was established in all the patients. The normal values of the sagittal incisal scale were established. Bionator has shown the largest influence upon the sagittal jaw relation, whereas the effects of the transversal dimension could be neglected. Because of its obvious positive effects, the Bionator I can be recommended as the best method in the treatment of class II/division 1 malocclusion.
