Treatment timing considerations for mandibular advancement with clear aligners in skeletal Class II malocclusions

Class II malocclusion is associated with mandibular skeletal retrusion in about 80% of all cases.1 Many clinicians prefer to use functional appliances, such as the Herbst* and Twin Block,** in growing patients with mandibular retrusion because they efficiently reduce overjet.2 Nevertheless, these removable functional appliances usually require finishing with fixed appliances.