Materials and methods: Lateral cephalograms were obtained from 207 untreated class II subjects (99 males, 108 females) between 8 and 12 years old, divided into three group based on OJ value: group II-1 (OJ ≤ 3.5 mm), group II-2 (3.5 mm < OJ ≤ 6 mm), group II-3 (OJ > 6 mm) and 69 subjects with normal occlusion (36 males, 33 females).