歯周病の治療を受けた100人の患者の歯の喪失。長期的な研究です

Tooth loss in 100 treated patients with periodontal disease. A long-term study.

抄録

歯周病の治療を受けて15年以上経過している患者100名を対象に、歯の喪失について調査した。患者の平均年齢は43.8歳で，女性59名，男性41名で構成されていた．患者は診察を受け、歯科診療記録を確認した。治療に対する反応と歯の喪失に基づいて、患者は維持度の高い患者（77名）、下降気味の患者（15名）、極端な下降気味の患者（8名）に分類された。初期治療が完了した時点で、2,627本の歯が存在していた。このうち、維持期間中に歯周病で259本（9.8％）、その他の原因で40本（1.5％）が失われたという。歯の喪失のパターン、問題のある歯の喪失、ファーケーションのある歯の喪失、外科的治療と非外科的治療、固定式または取り外し式の補綴物の有無について評価した。回答グループ間でかなりの差が生じた。歯周病は左右対称であると考えられ、歯の喪失パターンは上顎第二大臼歯の喪失が最も多く、下顎犬歯の喪失が最も少ないというパターンを示した。

A population of 100 patients with periodontal disease who had been treated and maintained for 15 years or longer was studied for tooth loss. The patients averaged 43.8 years of age and consisted of 59 females and 41 males. Patients were examined and their dental records were reviewed. On the basis of response to therapy and tooth loss, the patients were classified as Well-Maintained (77), Downhill (15), or Extreme Downhill (8). At the completion of initial treatment, 2,627 teeth were present. Of this number, during the maintenance period, 259 teeth (9.8%) were lost due to periodontal disease, while 40 teeth (1.5%) were lost due to other causes. Evaluation was made as to patterns of tooth loss, loss of questionable teeth, loss of teeth with furcations, surgical vs. nonsurgical therapy, and presence of fixed or removable prostheses. Considerable variation occurred between response groups. Periodontal disease appears to be bilaterally symmetrical and tooth loss response emulated this pattern with greatest loss of maxillary second molars and least loss of mandibular cuspids.