Dose-Dependent Anti-Erosive Effect of Green Tea Extract Modification of Rivella Beverage.
Year: 2026
Type: article
Abstract: PURPOSE: To examine the effect of adding increasing amounts of green tea extract (GTE) to a soft drink (Rivella) on dentin wear in an erosion-only model. MATERIALS AND METHODS: The study consists of two experiments: In the first experiment, a total of 60 bovine dentin samples from 4 groups (n=15) were immersed in four Rivella variants: red, blue, green, and yellow. The samples were subjected to 4 cycles (per cycle: 10 min in the specified solution followed by rinsing with deionised water for 5 sec then storage 60 min in artificial saliva). In the second experiment, a total of 120 bovine dentin samples from 8 groups (n=15) were immersed in Rivella red with modified GTE concentrations (0.0; 0.05, 0.2, 0.4, 0.8, 1.0 or 1.2%). The cycle procedure was the same as in the first experiment. The measured dentin loss corresponded to the vertical shift on the y-axis between the baseline and the final profile after the wear process in 2D. Erosive dentin wear was measured by a stylus profilometer (µm). Data were analyzed using ANOVA followed by post-hoc pairwise comparisons and the p-values were adjusted after Holm. RESULTS: In experiment 1 the following dentin wear (mean ± SD) was observed: Rivella red: 2.7 ± 0.4 µm; Rivella blue: 3.1 ± 0.4 µm; Rivella green: 2.1 ± 0.4 µm; Rivella yellow: 2.1 ± 0.3 µm. While the first two differed significantly, the last two did not. In experiment 2 dentin wear (mean ± SD) was: Rivella+0% GTE: 3.6 ± 0.6) µm; Rivella+0.05% GTE: 3.6 ± 0.2) µm; Rivella+0.2% GTE: 3.4 ± 0.6) µm; Rivella+0.4% GTE: 3.1 ± 0.4) µm; Rivella+0.6% GTE: 2.6 ± 0.3) µm; Rivella+0.8% GTE: 2.6 ± 0.4) µm; Rivella+1.0% GTE: 2.2 ± 0.2) µm; Rivella+1.2% GTE: 2.1 ± 0.3) µm. A significant decrease in erosive wear with increasing amount of GTE was observed. CONCLUSION: When increasing the addition of green tea extract to the soft drink Rivella, an almost linearly increasing protection against erosion can be observed in vitro.
Source: PubMed
Language: English
Topic: Dental Erosion and Treatment
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W7125984409