Abstract: Abstract：Objective: To evaluate the orthopaedic effect of presurgical nasal-alveolar molding（PNAM）on the nasolabial deformities in the bilateral complete cleft lip and palate infants .Methods: 20 cases were born 10 days-3 months with bilateral complete cleft lip and palate were underwent the PNAM treatment . Bilateral upper lip crack width, the length between the level of cleft lip and anterior nasal process, columellar length , cleft lip angle were measured before and after treatment, and statistically analyzed by SPSS21.0 software. Results: After treatment of PNAM for 3-4 months, bilateral upper lip crack width, the length between the level of cleft lip and anterior nasal process were significantly decreased. Columellar length was statistically significantly increased. Cleft lip angle was decreased, but no statistics significance. Nose shape was substantially symmetrical, the alae of the nose recovery is not obvious, columellar position located in the middle of the face. Conclusion: PNAM treatment can effectively decrease the width of the upper lip crack of bilateral cleft lip and palate, depress anterior nasal process, elongate columella, improve the appearance of the nose and reduce the difficulty of operation.

Key words: presurgical nasal-alveolar molding , bilateral complete cleft lip, infant, nose