Aim of the study: is to compare the changes in the sagittal pharyngeal airway dimension (SPAD) and mandibular position before and after the levelling and alignment stage of orthodontic treatment in Class II division 2 patients.
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
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
Nourhan M.Aly
Lead sponsor
University of Alexandria
Sponsor institution