Clinical study on immediate autotransplantation of teeth with complete root formation

DOI Web Site 47 References
  • HASEGAWA Katsunori
    Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences
  • YOSHIZAWA Michiko
    Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences
  • NIIMI Kanae
    Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences
  • Ono Yukiko
    Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences
  • SUZUKI Ichiro
    Division of Community Health Promotion, Niigata University Medical and Dental Hospital
  • Chikara SAITO Chikara SAITO
    Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences

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Other Title
  • 歯根完成歯の即時自家移植に関する臨床的検討
  • シコン カンセイシ ノ ソクジ ジカ イショク ニ カンスル リンショウテキ ケントウ

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Abstract

The purpose of the present study was to elucidate the cause of unsuccessful cases of autotransplantation of teeth with complete root formation carried out at Niigata University Medical and Dental Hospital from 1997 to 2001.<br>The subjects were 150 patients with a total of 165 autotransplanted teeth. All transplants were classified into two groups: a transplant-loss group because the teeth had either fallen out or been pulled out, and a transplant-surviving group. The characteristics of transplanted teeth and recipient sites were studied clinically in the transplant-loss group, and then the differences between these groups were examined statistically.<br>In all, 15 transplants were lost (9.1%) while 150 transplants survived (90.9%). In the transplant-loss group, a failure of wound healing was recognized as a major cause. A donor tooth that was larger than the recipient site, an atypical root shape of the donor tooth, and a large defect in the bone wall of the recipient socket were observed in cases of failure of wound healing. The incidence of a donor tooth that was larger than the recipient site, a defect in the bone wall of the recipient socket, and a connection of the recipient site with the donor socket on the pre-operative panoramic radiograph was more significant in the transplant-loss group than the transplant-surviving group.<br>These results show that it is important to examine the recipient site carefully, comparing their size to that of the donor teeth before operation in order to avoid insufficient wound healing.

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