Abstract
ObjectiveThe purpose of the investigation was to evaluate whether the application of compression forces exerted on the periodontal ligament during orthodontic movement is reflected at the level of interleukin (IL)-17 and IL-23. Materials and methodsThe gingival crevicular fluid (GCF) samples from the compression sites of 32 molars from 16 patients prescribed with modified Hyrax appliance were collected. The GCF were analyzed for IL-17, IL-23, and IL-1β (Control) at baseline and at 1, 7, and 14 days of active wear of the appliance. ResultsOrthodontic forces resulted in increased levels of IL-17 and IL-23 in the GCF, which were statistically significant at 7 days of force application at compression sites. At day 14, levels decreased to baseline; IL-1β levels (positive control) were more elevated at all times after force application. IL-17 and IL-23 levels were significantly lower than IL-1β, and undetectable in some samples. ConclusionUpregulation of IL-17 and IL-23 occurred in response to the force application in compression sites. Monitoring the levels of inflammatory mediators might be a clinically useful procedure, as they may help to define optimal forces to produce the most rapid tooth movement.
Published Version
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