ABSTRACT
Objective To study the characteristics of maxillary growth after lip and palate repair. Methods Using X-ray cephalometry through 12 landmarks and 12 measured values we had compared the difference between 60 patients with operated cleft lip and palate and 20 normal persons. Results After the operation all patients appeared limits of maxillary growth in different degree and different way. SNA and N-A-Pg [(-4.8?6.31)mm, P 0.05] were smaller than normal in patients of cleft lip. SNA(74.5?4.01)?, P 0.05;(75.1?1.07)?, P 0.01], and N-ANS [(47.3?2.41)mm, P 0.01;(49.8? 1.91) mm, P 0.01] were also smaller than normal in cleft palate and cleft lip and palate. Conclusions The limits of maxillary growth are affected by congenital and operative factors. Lip repair will influence the length of maxilla, and palate repair will influence height and width of maxilla.