粘膜下の根の保持。2年間の臨床観察

Submucosal root retention. A two-year clinical observation.

• M I MacEntee
• B M Goldstein
• C Price

抄録

8人の被験者が21本の歯の歯冠を外科的に切断し、歯根は歯槽粘膜で覆われていた。手術時、17本の歯は生命力があり、4本の歯は歯内療法を受けていた。平均2年の期間を経て、12本の歯（57％）は合併症なく水没したままであった。2本の歯根は抜歯され、3本は通常のオーバーデンチャーのアバットメントに変更することに成功し、残りの4本は口腔内に出現し、現在も観察中である。この処置による長期的な補綴効果を期待するには注意が必要である。

Eight subjects had the crowns of 21 teeth surgically amputated, and the roots were covered by alveolar mucosa. At the time of surgery, 17 teeth were vital and four had received endodontic therapy. After an average 2-year-period, 12 teeth (57%) remained submerged without complications. Two roots have been extracted, three have been successfully converted to regular overdenture abutments, and the remaining four have appeared in the mouth and are still under observation. Caution is urged as to expectations of a long-term prosthetic benefit from this procedure.