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Outcomes of autotransplanted teeth and prognostic factors: a 10-year retrospective study
Sujin Yang1, Bock-Young Jung1, Nan-Sim Pang2
1Department of Advanced General Dentistry, College of Dentistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
Objectives:
This retrospective study aimed to investigate the clinical outcome of tooth autotransplantation and related prognostic factors.
Materials And Methods:
Eighty-two cases of transplanted teeth from March 2006 to December 2016 were retrospectively investigated by medical records and radiographs. The clinical outcomes of transplanted teeth, which included tooth survival, inflammatory root resorption (IRR), ankylosis, and marginal bone loss (MBL), and the related prognostic factors were assessed via survival analysis.
Results:
The cumulative survival rate of transplanted teeth was 74% at 10 years after autotransplantation. According to Cox proportional hazards regression analysis, the eruption state of the donor tooth, recipient position, and postoperative MBL were significantly related to tooth survival. The donor tooth position was significantly associated with IRR, the recipient position and the timing of orthodontic initiation with ankylosis, and the recipient position with MBL.
Conclusions:
Fully erupted donor teeth and a bounded recipient site were significantly associated with longer tooth survival. Periodontal healing and management to prevent postoperative MBL were as important for successful autotransplantation.
Clinical Relevance:
Knowledge about the prognostic factors that are significantly associated with each particular clinical outcome may guide clinicians to achieve predictable and successful outcomes after tooth transplantation.
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