Alveolar bone regeneration after transplantation of immature teeth in orthodontic patients.

The aim of the paper was to present the potential for alveolar bone regeneration following the autotransplantation of immature teeth, based on a literature review and case presentations. Surgical treatment planning for successful healing is discussed with regard to donor selection, the stage of root development, the morphology and position of the donor tooth and the size of the apical foramen. The follow-up observations include pulp healing, the regeneration of Herwig's epithelial root sheath and periodontal healing. Differences between unerupted and erupted teeth, as well as the role of a dental follicle during the surgical removal of the donor tooth were discussed. Additionally, the changes associated with tooth eruption and the role of the periodontal ligament (PDL) in promoting bone formation after the autotransplantation of immature teeth were described. By utilizing the natural healing capacity of the PDL, autotransplantation represents a valuable treatment option for restoring dentition and promoting alveolar bone regeneration in patients with missing teeth or dental anomalies. Clinical and radiological documentation, along with the treatment descriptions of three young orthodontic patients illustrate the concepts discussed provide clinical guidelines for the autotransplantation of immature teeth.