Effect of Chewing Gum on Reducing Gingival Crevicular Fluid Volume

Objectives: The aim of this study is to investigate the decrease of gingival crevicular fluid volume after chewing gum containing tea polyphenol. Methods: 30 primary school students aged from 8 to 9 years old are randomly divided into 3 groups. Every group experienced three periods. Group A experienced tea polyphenol chewing gum, the control gum (without tea polyphenol) and no gum period respectively. Group B experienced the control gum, no gum and tea polyphenol chewing gum period in turn. And Group C experienced no gum, tea polyphenol chewing gum and the control gum period in turn. The subjects of gum periods chewed the gum dispensed 3 min twice a day for 5 days. Each period was seperated by a 9-day wash-out phase. Subjects had refrained from eating and drinking for 2 hours before evaluation. The crevicular fluid volume was measured by Periotron 8000 and analyzed by one-way ANOVA and SNK. Results: After chewing the tea polyphenol gum the gingival crevicular fluid volume was obviously lower than the contrast period(p<0.05). Conclusion: It can be concluded that tea polyphenol chewing gum has evident effect on reducing gingival crevicular fluid volume.