[The stimulation of the rotation of the mandible with Angle Class II/1 and II/2 malocclusion with functional regulators and activators as compared to the control group].

In a teleradiological longitudinal study 86 patients with a Angle class II malocclusion were followed over a period of 4 years to examine the rotation of the mandible. 43 of these patients were treated with a functional regulator according to Fränkel, 22 with an activator and 21 children remained untreated (control group). As compared to the children in the activator group, the patients treated with the functional regulator (FR 1) showed that existing clockwise rotation was stimulated to the forward rotation and with the functional regulator (FR 2) a forward rotation was stopped.