In F.N. Orthodontics, many functional orthopedic appliances for orthodontic skeletal anomalies of the II & III Angle class are constructed annually.
The awareness of basic construction principles and the range of variants of the essential appliances guarantee the comfortable and proper use by the patient in the dentists' practices and the maximum efficiency of the orthodontic treatment. There is a great variety of devices in either monoblock or double plate appliances.
As examples, we mention the FR I, FR II, FR III, the ACTIVATOR, the VDP - SANDER double plate, the TWIN BLOCK, the HERBST, the BIONATOR - BALTERS, the U-BIEGEL, the GEORGE KLAMTT hyperelastic, the VANBEEK, the MAXILLATOR, the ERGENZIGER, the TANDEM as well as many of their variants and many more.
During orthodontic therapy with functional appliances, functional stimuli cause form alteration and dilatation of the tissues resulting in bone stimulation (bone deposition), bone remodeling, and bone displacement. The available orthodontic appliances are devices with an orthopedic effect. In other words, they act on the visceral skull, in the area of the condyles and seams, and the dentoalveolar area during the pre-adolescent stage of growth.
It is essential to mention that the functional appliances do not act on the teeth via mechanical parts such as springs, palatal expanders, or bands but transfer, reduce, direct or modulate the physical "same" forces such as the muscular force, the growth dynamics and the dynamics of tooth eruption.
Finally, to highlight the importance of the proper interocclusal wax record taken for each separate case.