The need for orthognathic surgery in patients born with complete cleft palate or complete unilateral cleft lip and palate.

The purpose of the study was three fold: (1) to assess the need for orthognathic surgery in complete cleft palate and complete cleft lip and palate patients treated in Liverpool, (2) to determine the effect of timing of operation, technique and the number of operations on the need for orthognathic surgery and (3) to establish a more standardised method of assessing the need of orthognathic surgery in cleft lip and palate patients.