Inclusion Criteria:  Patients who had nonsyndromic unilateral or bilateral cleft lip and alveolus with or without cleft palate Patients received alveolar bone graft at their 9 years of age Patients received twice CBCT after the surgery  Exclusion Criteria:  Patient had syndromic cleft alveolus Patient underwent two-stage ABG (performed for bilateral cases) Patient exhibited failed grafted tissue