Immediate autotransplantation of a mandibular premolar with complete roots to a fractured tooth site, using platelet-rich fibrin in an orthodontic patient, report of a case.

Transplantation of one tooth to another site in the same individual can be considered an attractive alternative to dental implants or fixed prostheses. This study reports the treatment results of a 16-year-old female with severe crowding in upper and lower arches and a fractured mandibular premolar with a poor prognosis. The crowding of the lower left quadrant was relieved by the extraction of the first premolar.