{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T21:16:02Z","timestamp":1790198162370,"version":"4.1.0"},"reference-count":51,"publisher":"Wiley","license":[{"start":{"date-parts":[[2025,3,24]],"date-time":"2025-03-24T00:00:00Z","timestamp":1742774400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100014232","name":"Helsedirektoratet","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100014232","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Dental Hygiene"],"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To describe the prevalence, extent and severity of periodontitis in an adult Norwegian population, using the 2017 EFP\/AAP and CDC\/AAP case definitions, and their associations with potential risk factors for periodontitis. A secondary aim was to explore how the stage and grade of periodontitis shifted when complexity and risk factors were added.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and Methods<\/jats:title><jats:p>A subsample of participants (\u2265\u200940\u2009years, <jats:italic>n<\/jats:italic>\u2009=\u200921,083) in a cross\u2010sectional health study (Troms\u00f87, 2015\u20132016) was invited to an oral health examination (<jats:italic>n<\/jats:italic>\u2009=\u20093946). Radiographic bone loss and four site measurements of periodontal probing depth (PPD) and bleeding on probing were recorded for 3701 adults.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>According to EFP\/AAP, 89% of participants had periodontitis (21% stage III\u2013IV), while 74% had periodontitis defined by CDC\/AAP (12% severe periodontitis). Five percent of stage III\/IV cases and 22% of severe cases had generalised disease. Higher age, frequent use of dental care, smoking and higher body mass index were associated with periodontitis for both definitions. PPD contributed to a shift to more severe stages. Smoking contributed the most to the shifting of grade, with 7% of cases shifting to grade C.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Periodontitis was highly prevalent according to both case definitions. Associations with known risk factors remained relatively consistent between the two case definitions. Complexity and risk factors played a significant role in the shifting of stage and grade of periodontitis.<\/jats:p><\/jats:sec>","DOI":"10.1111\/idh.12909","type":"journal-article","created":{"date-parts":[[2025,3,24]],"date-time":"2025-03-24T22:14:29Z","timestamp":1742854469000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Comparison Between the 2017 <scp>EFP<\/scp>\/<scp>AAP<\/scp> and <scp>CDC<\/scp>\/<scp>AAP<\/scp> Case Definitions on Periodontal Status and Their Association With Risk Factors in an Adult Norwegian Population\u2014Insights From the Troms\u00f8 Study: Troms\u00f87"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9849-8780","authenticated-orcid":false,"given":"Gro Eirin","family":"Holde","sequence":"first","affiliation":[{"name":"The Public Dental Health Service Competence Centre of Northern Norway  Troms\u00f8 Norway"},{"name":"Department of Clinical Dentistry, Faculty 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