Transverse Dento-skeletal Effects of Two Rapid Palatal Expansion Appliances in Cleft Lip and Palate Patients

Inclusion Criteria: * (1) Mixed dentition; (2) Both males and females; (3) Lip repair performed between 3 and 6 months of age and palate repair performed between 12 and 24 months of age; (4) Presence of maxillary constriction and posterior crossbite and need for maxillary expansion previous to the secondary bone graft; (5) Permanent first maxillary molars present; (6) Good periodontal health; (7) No previous orthodontic treatment; Exclusion Criteria: * (1) Presence of a syndrome in companion with the present cleft defect (2) Previous secondary alveolar bone grafting (3)Taking medications affecting growth