Orthodontic treatment in management of cleft lip and palate is usually carried out in:
Deciduous dentition and mixed dentition
Mixed dentition
Mixed and permanent dentition
Permanent dentition
Many children with cleft lip and palate require orthodontic treatment. Orthodontic treatment is commonly carried out in two phases:

Mixed dentition (8 - 10 years) – to expand the maxillary arches as a prelude to alveolar bone graft.
Permanent dentition (14 -18 years) – to align the dentition and provide a normal functioning occlusion. This phase of treatment may also include surgical correction of a malpositioned/ retrusive maxilla by maxillary osteotomy.