Early secondary bone grafting in children with alveolar cleft does not modify the risk of maxillary permanent canine impaction at the age of 10 years

International audienceThe risk of maxillary permanent canine retention is elevated in children with cleft lip and palate (CLP). This study compared this risk in 10 ± 1 year-old patients with unilateral CLP (UCLP) who underwent or not early maxillary bone grafting at the age of 6 ± 1 years.METHODS:Retrospective, controlled monocentric and observational study with the following inclusion criteria: patients with UCLP, isolated cleft, pre-surgery orthodontic maxillary expansion, same surgical protocol, same surgical team. The risk of maxillary canine retention was evaluated using a dental panoramic radiograph, on the basis of the canine root development stage and of the angle (> or