14:9 yo Male with Class I, Anterior Open Bite malocclusion. His vertical pattern is mildly high, his sagittal pattern is mildly Class II and his transverse dimension is normal. His anterior open bite was due a thumb sucking habit he had as a child. Due to his protruded lips,lack of mental sulcus definition and lower crowding, I decided to extract four premolars (see details at the end).