{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T11:49:02Z","timestamp":1782474542089,"version":"3.54.5"},"reference-count":18,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["European J Oral Sciences"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The 2018 AAP\/EFP Classification of Periodontal Diseases introduced staging and grading to improve the description of periodontitis severity and factors associated with disease progression. Although widely adopted in clinical and research settings, its validation has focused mainly on inter\u2010examiner agreement, diagnostic concordance and prognostic performance, with limited evidence on patient\u2010centred outcomes such as comprehension, recall and behavioural relevance. Available studies suggest that patients retain staging and grading poorly and instead rely on observable and functional indicators of disease, indicating a potential mismatch between clinical constructs and patient\u2010relevant information for decision\u2010making. This article examines the 2018 classification from a communication perspective, distinguishing diagnostic validity from communicative validity and evaluating whether extent, stage and grade can meaningfully support patient understanding. A pragmatic conceptual model reframes these constructs as communication components describing disease distribution, current burden and progression risk. Overall, although the 2018 system provides a structured framework for periodontal classification, its effectiveness as a communication tool remains uncertain. Future research should investigate how periodontal information can be structured to improve comprehension, recall and informed decision\u2010making in practice.<\/jats:p>","DOI":"10.1111\/eos.70120","type":"journal-article","created":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T11:29:34Z","timestamp":1782473374000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Does the 2018 periodontal classification improve patient understanding? A missing piece in periodontal care"],"prefix":"10.1111","author":[{"suffix":"Jr.","given":"Clovis Mariano","family":"Faggion","sequence":"first","affiliation":[{"name":"Department of Periodontology and Operative Dentistry Faculty of Dentistry University Hospital M\u00fcnster  M\u00fcnster Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,26]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcpe.12935"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcpe.13406"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcpe.13157"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/JPER.19\u20100390"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/JPER.21\u20100211"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pec.2021.09.015"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/cdoe.12856"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/cdoe.12942"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1902\/annals.1999.4.1.1"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/JPER.19\u20100586"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/JPER.18\u20100006"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcpe.14170"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.adaj.2025.09.009"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1055\/s\u20100045\u20101806951"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/14651858.CD004714.pub4"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.amepre.2018.02.014"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1111\/jre.70051"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/jper.70008"}],"container-title":["European Journal of Oral Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/eos.70120","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/eos.70120","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/eos.70120","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T11:29:35Z","timestamp":1782473375000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/eos.70120"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,26]]},"references-count":18,"alternative-id":["10.1111\/eos.70120"],"URL":"https:\/\/doi.org\/10.1111\/eos.70120","archive":["Portico"],"relation":{},"ISSN":["0909-8836","1600-0722"],"issn-type":[{"value":"0909-8836","type":"print"},{"value":"1600-0722","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6,26]]},"assertion":[{"value":"2025-12-14","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-18","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-26","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70120"}}