Hyperdivergent Skeletal Class II Malocclusion

Hyperdivergent patients present with mandibular retrognathia accompanied by excessive anterior facial height, resulting in the long-face or adenomorphic morphology. Class II malocclusion is the most prevalent type of dental malocclusion, affecting approximately 20.05% of patients. Most skeletal class II malocclusion is caused by mandibular retrognathia, not true maxillary protrusion; only about 14% involves true maxillary protrusion. In hyperdivergent skeletal class II malocclusion, the mandibular plane is steeply inclined and the occlusal plane is steep as a consequence of backward (clockwise) rotation of the mandible. Vertical overeruption of the maxillary incisors is the principal cause of the steep occlusal plane in hyperdivergent adolescents.