This case was presented as part of the American Board of Orthodontics case displays at the 1999 AAO meeting. It was selected to be submitted for the publication in the American Journal of Orthodontics and Dentofacial Orthopedics by the ABO.

PURPOSE This retrospective study aimed to evaluate the nasopharyngeal and oropharyngeal dimensions of individuals with skeletal class II, division 1 and division 2 patterns during the pre-peak, peak, and post-peak growth periods for comparison with a skeletal class I control group. MATERIALS AND METHODS Totally 124 lateral cephalograms (47 for skeletal class I; 45 for skeletal class II, divis...