客座社论：关于新牙周炎分类使用的说明。
Guest editorial: Clarifications on the use of the new classification of periodontitis.
机构信息
ETEP Research Group, Faculty of Dentistry, Complutense University of Madrid, Madrid, Spain.
Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Sciences, Columbia University, New York, New York.
出版信息
J Periodontol. 2020 Nov;91(11):1385. doi: 10.1002/JPER.20-0166. Epub 2020 Apr 28.
This editorial provides clarifications on the application of the Stage and Grade classification of periodontitis. In particular it describes: (1) how to apply the extent criterion to the defined Stage of the disease; and (2) how to calculate tooth loss because of periodontitis in Stage III and IV cases presenting with evidently hopeless (irrational to treat) teeth with a clinical definition of such teeth.
本社论就牙周炎的分期和分级分类的应用提供了说明。具体而言，它描述了：(1)如何将程度标准应用于疾病的既定分期；以及 (2)如何计算由于 III 期和 IV 期病例中明显无望（不合理治疗）的牙齿而导致的牙周炎引起的失牙，这些牙齿的临床定义为这样的牙齿。
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