Abstract: Objective: To describe the multidisciplinary management of malocclusion in a patient with left unilateral cleft lip and palate. Diagnosis and Treatment: Following comprehensive diagnosis, a sequential multidisciplinary treatment protocol was established. The treatment consisted of presurgical orthodontics in preparation for alveolar bone graft, alveolar bone graft, postsurgical orthodontic treatment, and nasolabial deformity correction. Prior to bone graft, orthodontic therapy was initiated to align the teeth adjacent to the cleft, adjust the cleft width and extract 22, thereby optimizing surgical conditions. After successful bone graft, teeth 15, 35, and 45 were extracted. Subsequent orthodontic treatment focused on establishing appropriate anterior overjet and overbite as well as stable posterior occlusal relationships. Nasolabial deformity repair was performed concurrently. Results: At the completion of treatment, the nasolabial appearance was markedly improved. A stable occlusion was achieved, characterized by normal anterior overjet and overbite and bilateral Class I molar relationships. Conclusions: In patients presenting with secondary deformities following cleft lip and palate repair, orthodontic-surgical multidisciplinary approach can effectively improve facial esthetics and achieve functional, stable occlusal outcomes.

Key words: cleft lip and palate, alveolar cleft, combined orthodontic-surgical treatment, multidisciplinary treatment, nasolabial deformity