人間における歯周病の自然史：歯肉退縮の有病率、重症度、および程度

The natural history of periodontal disease in man: prevalence, severity, and extent of gingival recession.

抄録

この論文は、ノルウェー（1969-1988）とスリランカ（1970-1990）で並行して行われた15歳から50歳までの2つの縦断的研究に参加した人々のコホートにおける歯肉退縮の発生とレベルについて述べている。ノルウェーのコホートでは、歯肉退縮は人生の早い時期に始まっていました。歯肉退縮は、20歳では60％以上に見られ、頬側に限局していました。30歳では70％以上に後退が見られたが、それでも主に頬側の表面に見られた。50歳に近づくと、90％以上に歯肉退縮が見られ、頬側の25％以上、舌側の15％以上、近心側の3〜4％に及んだ。スリランカのコホートでは、30％以上が20歳前に歯肉の後退を示した。30歳では90％が頬側、舌側、近心側で後退し、40歳では100％のスリランカ人が後退しました。50歳になると、頬側で70％以上、舌側で50％以上、近心側で40％以上の歯肉退縮が見られた。この2つのコホートの特徴に基づいて、歯肉退縮には1種類以上のタイプがあり、これらの病変の開始と発展を決定する要因はおそらく複数あるという作業仮説が立てられた。

This paper describes the occurrence and levels of gingival recession in 2 cohorts of individuals participating in parallel longitudinal studies in Norway (1969-1988) and Sri Lanka (1970-1990), covering the age range from 15 to 50 years. In the Norwegian cohort gingival recession had begun early in life. It occurred in greater than or equal to 60% of the 20 year-olds and was confined to the buccal surfaces. At 30, greater than or equal to 70% had recession, which still was found mainly on buccal surfaces. As the group approached 50 years of age, more than 90% had gingival recession; greater than or equal to 25% of the buccal surfaces were involved, greater than or equal to 15% of lingual, and 3 to 4% of the interproximal surfaces. In the Sri Lankan cohort greater than or equal to 30% exhibited gingival recession before the age of 20 years. By 30 years, 90% had recession on buccal, lingual, and interproximal surfaces; and at 40 years, 100% of the Sri Lankans had recession. As they approached 50 years, gingival recession occurred in greater than or equal to 70% of the buccal, greater than or equal to 50% of the lingual, and 40% of the interproximal surfaces. Based on the special features of the two cohorts, the working hypothesis is advanced that there is more than one type of gingival recession and probably several factors determining the initiation and development of these lesions.