Clear Aligner Treatment of a Class II Division 2 Patient With Multiple Anterior Crowns and Molar Mesial Tipping Through Cantilever Arms: A Case Report

Patients with Class II Division 2 malocclusion, often presenting with severe deep overbite and poor facial esthetics, are one of the most challenging cases in orthodontic practice. This case report shows the successful treatment of a Class II Division 2 deep bite patient with multiple anterior crowns using clear aligners. After the extraction of Tooth 45, we moved the right mandibular molars mesially to achieve a Class I relationship. Cantilever arms and elastics were used to correct the molar mesial tipping. We precisely controlled the space between prostheses by digital design. At the end of the treatment, new porcelain crowns and the counterclockwise mandibular rotation improved the dental and facial esthetics.