Inclusion Criteria:  (1) Subjects with non-syndromic CLP aged 6-18 years. (2) Subjects with no CLP deformity, aged 6-18 years. (4) Patients having complete records comprising dental/medical history and a lateral cephalometric and panoramic radiograph.  (5) No congenitally missing teeth in the mandible. (6) No previous history of trauma to the face, neck.  Exclusion Criteria:  Radiographs of poor quality. Any growth or hereditary or systematic diseases or syndromes Any trauma or fracture of the jaw that might have affected the normal growth of permanent dentition.