本刊 2 0 0 1年 9月第 5期已向读者介绍了由 1999年国际研讨会专家们提出的牙周疾病新分类。为便于读者了解该分类制定的原则和精神 ,特将研讨会组委会主席G Armitage所写的题为“制定牙周疾病和状况的分类系统 (Developmentofaclassificationsystemforperiodontaldiseasesandconditions)”的文章内容简要介绍于下。该文发表于美国牙周学会主编的《牙周病学年刊 (AnnalsofPeriodontology)》1999年第 4卷第 1期 (1 6页 )。 Issue 5 September 2001 Issue 5 has introduced the reader to a new classification of periodontal disease presented by experts from the 1999 International Symposium. In order to facilitate readers' understanding of the principles and spirit of the classification, the article entitled “Development of classification system for periodontal diseases and conditions” written by G Armitage, Chairperson of the Organizing Committee of the Seminar, is briefly introduced below. This article was published in the Annals of Periodontology, 1999, Volume 4, Number 1 (January 16), edited by the American Society for Periodontology.