Skeletal Class II Hyperdivergent Patient Treated With Clear Aligners

Clear aligners has become one of the mainstream techniques in modern orthodontic treatment. This case report presents an adult patient with a skeletal Class II hyperdivergent malocclusion treated with clear aligners. a 20-year-old male patient with the chief complaint of protrusive lips. Clinical examination revealed a convex facial profile with mandibular retrusion . The chin point deviated to the right about 1 mm, while the maxillary midline was shifted 1 mm to the left and the mandibular midline 3 mm to the right. Intraorally, mild crowding was observed in both tapered dental arches with a right-sided end-on Class II molar relationship and left-sided Class I relationship, accompanied by III° deep overbite and deep overjet. Cephalometric analysis confirmed a skeletal Class II pattern with high mandibular plane angle and proclined upper and lower incisors. Maxillary first premolars and mandibular second premolars were extracted, with strong anchorage in the maxilla and moderate anchorage in the mandible. Class II elastics were added to reinforce maxillary anchorage and retract the anterior teeth. To achieve tight posterior occlusal contacts, Vertical box elastics were applied between the maxillary and mandibular molars. By the end of treatment, the molars were intruded, the mandible was counterclockwise rotated, and a Class I molar relationship with ideal overbite and overjet was achieved. Using clear aligners to treat a skeletal Class II high-angle case demonstrated effective three-dimensional control of the dentition, resulting in satisfactory treatment outcomes.