Salivary pellicle modification with polyphenol-rich teas and natural extracts to improve protection against dental erosion

To investigate the modification of salivary pellicle with different polyphenol-rich teas and natural extracts for protection against dental erosion. We performed two experiments: one (Green tea, Black Peppermint Rosehip negative control [NC]) other (Grape seed, Grapefruit Cranberry, Propolis, NC), where NC was deionized water. A total 150 enamel specimens were used (n = 15/group). Both experiments followed same design, consisting 5 cycles of: formation (30 min, 37 °C), solutions 25 further (60 °C) erosive challenge (1 1% citric acid, pH 3.6). Relative surface microhardness (rSMH), relative reflection intensity (rSRI) amount calcium release (CaR) evaluated. Data analysed Kruskal-Wallis Wilcoxon rank sum tests Bonferroni correction (? 0.05). Regarding teas, Green showed best erosion, presenting higher rSMH lower CaR than NC. tea not to caused showing highest greatest loss SMH SRI. extracts, Grape seed presented protective effect, significantly CaR. Cranberry more demineralization; Propolis did differ from extract able modify improve its effect but Some some bio-products, such as More studies should be in order test viability their use active ingredients oral care products.