Purpose: To investigate the effect of energy drinks supplementation with green tea extract on the erosive dentine wear.
Keywords: erosive dentine wear, energy drinks, green tea, erosive potential, profilometry
Materials and Methods: Six groups of bovine dentine samples (n = 15) were subjected to four cycles erosive attacks (10 min, 25 °C) and remineralisation (artificial saliva, 60 min, 37°C) using the following formulas: tap water; green tea extract; Red Bull; Red Bull supplemented with green tea extract; Red Bull Light; Red Bull Light supplemented with green tea extract. The erosive dentine wear – ie, the irreversible dentine loss – was measured using a stylus profilometer (µm, accuracy = 40 nm).
Results: Median and interquartile range (IQR) of erosive dentine wear for the tested energy drinks before and after the supplementation with green tea extract were calculated as follows: Red Bull (before: 3.3 µm (1.0)); after: 1.2 µm (0.6)); Red Bull Light (before: 3.3 µm (0.9)); after: 2.0 µm (0.4)). The difference between the groups before and after the supplementation was statistically significant (P ˂0.05). The erosive dentine wear for the tap water group was calculated at 0.4 µm (0.6) and for the green tea extract group at –1.0 µm (1.3).
Conclusions: Supplementation of energy drinks with green tea extract could reduce the erosive dentine wear caused by energy drink in vitro.