Changes in the Sagittal Pharyngeal Airway Dimension Following Leveling and Alignement in Class II Division 2 Patients

Inclusion Criteria: * Class II/2 subjects as per the British Standard Institute Classification. * Age ranging from 12-16 years, with Cervical Vertebral Maturational Index (CVMI) stages 4, and 5. * Contact between maxillary and mandibular incisors, with the presence of a deep bite of at least 70%. * Full permanent dentition, aside from the third molars Exclusion Criteria: * Previous orthodontic treatment. * Patients with severe transverse problems, pain and/or clicking sound in the temporomandibular joint (TMJ). * Patients with craniofacial anomalies or diagnosed syndromes