自家歯牙移植の長期生存率：最長162ヶ月

Long-Term Survival Rate of Autogenous Tooth Transplantation: Up to 162 Months.

抄録

:本研究の目的は、インプラント前治療として自家歯牙移植を行った期間別の累積生存率を検討することにより、自家歯牙移植の有用性を観察することである。 本研究では、2008年11月から2021年1月までの約13年間にキョンプク大学歯科病院を受診し、自家歯牙移植を受けた患者111名を対象に実施した。レシピエント歯の抜歯原因(う蝕、智歯周囲病変、亀裂、歯冠破折、歯周炎)と対合歯の状態(天然歯と固定式補綴物)による自家歯牙移植の累積生存率を検討した。また、年齢（30歳未満と30歳以上）による自家歯牙移植の累積生存率を調査し、各要因に差があるかどうかを検討した。全ての自家移植歯の24ヶ月累積生存率は91.7％、60ヶ月累積生存率は83.1％、162ヶ月累積生存率は30.1％であった。自家歯牙移植の生存率は、レシピエントの歯の状態よりもむしろドナーの歯の状態に影響されるようである。自家歯牙移植は、インプラント治療に完全に取って代わることはできませんが、インプラント埋入が可能になるまでの期間をわずかに遅らせるか、少なくともその期間を稼ぐことができるという点では有意義です。

: The purpose of this study is to observe the usefulness of autogenous tooth transplantation by examining the cumulative survival rate according to the period of auto-transplanted teeth as pre-implant treatment. : This study was conducted on 111 patients who visited Kyungpook National University Dental Hospital and underwent autogenous tooth transplantation between November 2008 and January 2021 (about 13 years). The cumulative survival rate of autogenous tooth transplantation according to the causes of extraction of the recipient tooth (caries, periapical lesion, crack, crown fracture, periodontitis) and condition of opposing teeth (natural teeth vs. fixed prosthesis). The cumulative survival rate of autogenous tooth transplantation according to the age (under 30 vs. over 30) was also investigated and it was examined whether there were any differences in each factor. : The average follow-up period was 12 months, followed by a maximum of 162 months. The 24-month cumulative survival rate of all auto-transplanted teeth was 91.7%, 83.1% at 60 months and the 162-month cumulative survival rate was 30.1%. There were no statistical differences between the causes of extraction of the recipient's teeth, differences in the condition of the opposing teeth, and differences under and over the age of 30. : The survival rate of autogenous tooth transplantation appears to be influenced by the conditions of the donor tooth rather than the conditions of the recipient tooth. Although autogenous tooth transplantation cannot completely replace implant treatment, it is meaningful in that it can slightly delay or at least earn the time until implant placement is possible.