The study aimed to analyse the effects of experimental gingivitis on crevicular prostaglandin E2 (PGE2). An increase of PGE2 was expected.Methods
Fourteen medical students refrained for 28 days from any oral hygiene procedures in two antagonistic quadrants while they maintained close to perfect oral hygiene in the remaining quadrants. Crevicular fluid samples were taken at baseline and at days 7, 14, 21 and 28 of experimental gingivitis both from quadrants with and without oral hygiene. PGE2-concentrations (ng/ml) and absolute levels (pg/sample) were analysed for quadrants with and without oral hygiene.Results
Comparison of quadrants with and without oral hygiene by repeated measures ANOVA revealed no effects of experimental gingivitis both on crevicular PGE2-concentrations and absolute levels.Conclusion
The study does not support the notion that experimental gingivitis induces an increase of crevicular PGE2. The data are discussed in the context of other studies on PGE2 concentrations in gingivitis. Close inspection of these studies reveals no clear evidence for an increase of local PGE2 in gingivitis.