[2018 world new classification of periodontal and peri-implant diseases and conditions].

World Workshop on the Classification of Periodontal and Peri-implant Diseases and Conditions was held in Chicago on November 9 to 11, 2017. More than one hundred experts from all over the world attended the conference and updated the 1999 classification of periodontal diseases and conditions, and developed a similar scheme for peri-implant diseases and conditions. The case definitions and diagnostic criteria were also established to aid clinicians in the use of the new classification. Nineteen review papers and four consensus reports covering relevant areas in periodontology and implant dentistry were simultaneously published in special issue of Journal of Periodontology and Journal of Clinical Periodontology in June 2018. This paper summarizes the new classification of periodontal and peri-implant diseases and conditions, and briefly introduce the changes made to the 1999 classification.牙周病和植体周病国际分类研讨会于2017年11月9至11日在美国芝加哥举行，100余名来自世界各地的参会者对1999年的牙周病分类进行修订，提出牙周炎的新分类框架，并参照牙周病分类的方案首次制定了植体周病和状况的分类。与会专家还提出了病例定义（case definitions），提供了诊断标准以便于临床医师使用。2017年研讨会达成的4篇共识报告和相关领域的19篇综述于2018年6月正式发表在美国牙周学会主办的牙周病学杂志（Journal of Periodontology）和欧洲牙周联盟主办的临床牙周病学杂志（Journal of Clinical Periodontology）特刊上。本文简介了牙周病和植体周病及状况的新分类，并针对1999年分类的主要变化进行重点阐述。.