517 - Autotransplantation of a premolar for incisor replacement and orthodontic traction of a supernumerary premolar - A case report

Abstract: This case report describes the autotransplantation of a premolar to replace a lost upper left central permanent incisor following a traumatic injury. The 16-year-old male subject incidentally had an impacted supernumerary premolar located palatally to the the second upper left permanent premolar. Due to ease of access, this second permanent premolar was easier to recover without damage to the PDL and received a pre-extraction root canal therapy since its apex was closed. The tooth underwent orthodontic activation forces for 6 weeks and was then extracted and reimplanted to replace the lost incisor. The selected tooth had two roots which was not ideal for transplantation but the surgery was aided by digital planning using a CBCT and a 3D printed copy of the premolar. Postoperative evaluation and radiographic assessment demonstrated successful healing of the transplanted tooth. This case underscores the benefits of autotransplantation in treating traumatic tooth loss in growing patients.