{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T12:48:14Z","timestamp":1790858894608,"version":"4.1.0"},"reference-count":39,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2012,3,1]],"date-time":"2012-03-01T00:00:00Z","timestamp":1330560000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2012,3]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> This study investigates whether gingival crevicular fluid (GCF), saliva, and plasma levels of interleukin\u201033 (IL\u201033) can differentiate individuals with chronic periodontitis from individuals with healthy periodontium.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> GCF, whole saliva, and plasma samples together with full\u2010mouth clinical periodontal recordings were obtained from 32 otherwise healthy, non\u2010smoker chronic periodontitis individuals and 25 systemically and periodontally healthy, non\u2010smoker individuals. IL\u201033 levels in the biofluid samples were determined by enzyme\u2010linked immunosorbent assay. Data were tested statistically by Mann\u2010Whitney <jats:italic>U<\/jats:italic> test.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> The GCF concentrations of IL\u201033 were significantly lower in chronic periodontitis individuals than in healthy individuals (<jats:italic>P<\/jats:italic> &lt;0.0001), whereas the total amounts in GCF samples were similar (<jats:italic>P<\/jats:italic> &gt;0.05). The salivary and plasma contrations of IL\u201033 were indifferent in the two study groups (<jats:italic>P<\/jats:italic> &gt;0.05).<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> According to the present findings, the GCF, saliva or plasma levels of IL\u201033 could not differentiate chronic periodontitis individuals and periodontally healthy individuals. Larger\u2010scale intervention studies may better clarify this issue.<\/jats:p>","DOI":"10.1902\/jop.2011.110239","type":"journal-article","created":{"date-parts":[[2011,8,22]],"date-time":"2011-08-22T13:21:26Z","timestamp":1314019286000},"page":"362-368","source":"Crossref","is-referenced-by-count":38,"title":["Interleukin\u201033 Levels in Gingival Crevicular Fluid, Saliva, or Plasma Do Not Differentiate Chronic 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