Craniofacial growth in bilateral cleft lip and palate patients following secondary premaxillary setback.

Data of an experimental group of bilateral cleft lip and palate patients (BCLP) who had undergone premaxillary setback at a mean age of 10.2 years were compared with a control group of standard cephalometric values for the white population, and with cephalometric data of BCLP patients from the Oslo Cleft Lip and Palate Archive who did not have premaxillary setback. Cephalometric lateral skull radiographs were taken at a mean age of 16.6 years when most facial growth is completed. Overall, the most marked difference between the two cleft samples was a slightly more concave profile in the experimental BCLP group, mainly due to clockwise rotation of the maxillary plane. Other differences were a longer face and a larger mandible in the experimental group.