Objective: To investigate the patients who need the orthodontic treatment before and after alveolar bone grafting; the selection of the indications and so on.
Methods: To select 20 patients with cleft lip and palate, each of them is treated by edgewise appliance, light-wire appliance or removable appliance half to one year before the operation.
Results: After orthodontic treatment, the patients' maxillary teeth are drawn up in order; the distorted teeth have the right positions; the shape of the arch is normal and the teeth beside the cleft are no longer oblique. All of these give a good space to the grafted bone.
Conclusion: The orthodontic treatment before and after alveolar bone grafting is an important composition of serial treatment of cleft lip and palate. It not only gives a promise to the successful operation, but also makes patient a better shape and function of the occlusion.