“…Ross (1987b) has stated that roughly a quarter of men with UCLP require orthognathic surgery to achieve a functional occlusion. The frequency of Le Fort I osteotomy in UCLP and bilateral cleft lip and palate (BCLP) patients has been reported to be 22e48.3% (Rosenstein et al, 1991;Cohen et al, 1995;DeLuke et al, 1997;Good et al, 2007;Daskalogiannakis and Mehta, 2009). In addition to the improved occlusion, the treatment objectives include improved dentofacial appearance, and self-perception.…”