Oropharyngeal Airway Dimensional Changes after Treatment with Trainer for Kids (T4K) in Class II Retrognathic Children

In the case of class II malocclusion where maxillary teeth show labial inclination and mandible shows retreat, by using Myobrace (T4K(TM)), mandibular position can be moved to the front using maxillary anterior teeth as an anchorage and thus gains the improving effect of the axial angle, excessively labial inclined, of maxillary anterior teeth to palatal area and therefore, expansion of upper airway can be achieved(Figure 1). [...]in the case of Activator, Bionator and FR-2 device generally used for class II malocclusion in mixed dentition, the cooperation level of childhood patients is usually low due to their big size and additional education on muscle function is necessary for correcting the location of tongue and mouth respiration.