[Cephalometric and tomographic evaluation of the treatment results of Class II division 1 obtained by elastic...

A group of 10 patients with Class II division 1 malocclusion was treated by an elastic activator for 11 months in order to achieve an orthopaedic improvement in the anteroposterior jaw relationship. Another group of 8 untreated patients with the same malocclusion served as a control group. Both groups involved the patients between 8 and 10 years of age. A comparative cephalometric and tomographic study prior to the treatment and after completion of the treatment revealed the following results: an improvement in the occlusal relationships due to both skeletal (an anterior mandibular displacement and an increase in the mandibular length) and dentoalveolar changes; it was possible to produce a growth stimulation of the mandibular condyle associated with a translation of the glenoid fossa by using an elastic activator; there was a direct correlation between the effects of the treatment and the age period of the patients (mixed dentition).