Assessing the surveillance use of 2018 EFP/AAP classification of periodontitis: A validation study and clustering analysis.

The validity of the 2018 EFP/AAP classification was verified by the unsupervised clustering method, which performed better in distinguishing 'periodontitis cases' than classifying the general population. For surveillance purposes, the 2012 CDC/AAP definition showed a higher agreement level with the clustering method than the 2018 EFP/AAP classification. This article is protected by copyright. All rights reserved.