Timing of palate repair affecting growth in complete unilateral cleft lip and palate

To evaluate the facial morphology characteristics of patients with complete unilateral cleft lip and palate (UCCLPs) who had undergone cleft palate repair at different times.This study included 46 nonsyndromic UCCLPs and 38 age and sex matched non-cleft patients. 35 cephalometric measurements were used to evaluate the facial morphology. Student's t-test, one-way ANOVA and rank sum tests were used for comparison. Significant difference was defined at 95% level.The data showed that UCCLPs who had palatoplasty between 7 and 12 years had greater PMP-A, PMP-ANS, Ba-ANS, Ba-A, Ba-N-ANS than those operated on before 4 years of age, and UCCLPs who had palatoplasty at 4-12 years had smaller Y-axis angle than those operated on before 4 years of age.The maxillary sagittal length increased gradually as von Langenbeck repair was delayed. UCCLPs who underwent palate repair using von Langenbeck technique at 4-12 years had a more protrusive maxilla and less clockwise rotated mandible than those repaired before 4 years. UCCLPs operated using the von Langenbeck technique at 4-12 years had better head-face morphology than those operated on before 4 years. There was no difference in facial morphology among UCCLPs with palate repair at 4-12 years.