IADR Abstract Archives
Effect of Salivary Pellicle on Sports and Energy Drinks-induced Erosion
Objectives: To determine the erosive potential of two sports and energy drinks and determine the impact of the acquired salivary pellicle on acid-mediated erosion of polished human enamel.
Methods: Polished (n=60) human enamel samples were randomised to pre-erosion saliva treatment (n=30) or no saliva pre-treatment (n=30) experimental arms. They were then immersed and agitated (n=10) in 80ml Red Bull (pH 3.31), Lucozade (pH 3.26), and deionised water (pH 6.89) solutions for five cycles of erosion. Changes in mean(SD) surface profilometry (single mid-point step height change, µm) and Knoop surface microhardness change (KHN) were determined before and after acid erosion. Data were tested for normality before undergoing statistical analysis (one-way ANOVA intra-group analysis, two-way ANOVA inter-group analysis)
Results: Mean (SD) step height change (µm) after deionised water, Red Bull, and Lucozade erosion without salivary pellicle was 0.26 (0.02), 8.62 (0.49), 10.07 (0.42) respectively, whilst with salivary pellicle this decreased to 0.20 (0.06), 4.61 (0.21), 7.83 (0.21); this decrease was statistically significant for Red Bull and Lucozade groups (p<0.0005).
Mean (SD) Knoop surface microhardness change after deionised water, Red Bull, and Lucozade erosion without salivary pellicle was 6.9 (4.7), 183.2 (11.4), 141.7 (16.4) respectively, and this decreased for all groups with salivary pellicle to 5.9 (2.0), 164.5 (4.8), 116.9 (4.3); this was statistically significant for Red Bull and Lucozade groups (p<0.0005).
Conclusions: Both energy and soft drinks tested, produced detectable bulk loss and surface softening changes in polished enamel. However, the acquired salivary pellicle provided a protective effect and reduced the erosive potential of both test solutions. This study provides insight into the erosive potential of common energy and sports drinks and how the acquired salivary pellicle mediates their effects on human enamel
Methods: Polished (n=60) human enamel samples were randomised to pre-erosion saliva treatment (n=30) or no saliva pre-treatment (n=30) experimental arms. They were then immersed and agitated (n=10) in 80ml Red Bull (pH 3.31), Lucozade (pH 3.26), and deionised water (pH 6.89) solutions for five cycles of erosion. Changes in mean(SD) surface profilometry (single mid-point step height change, µm) and Knoop surface microhardness change (KHN) were determined before and after acid erosion. Data were tested for normality before undergoing statistical analysis (one-way ANOVA intra-group analysis, two-way ANOVA inter-group analysis)
Results: Mean (SD) step height change (µm) after deionised water, Red Bull, and Lucozade erosion without salivary pellicle was 0.26 (0.02), 8.62 (0.49), 10.07 (0.42) respectively, whilst with salivary pellicle this decreased to 0.20 (0.06), 4.61 (0.21), 7.83 (0.21); this decrease was statistically significant for Red Bull and Lucozade groups (p<0.0005).
Mean (SD) Knoop surface microhardness change after deionised water, Red Bull, and Lucozade erosion without salivary pellicle was 6.9 (4.7), 183.2 (11.4), 141.7 (16.4) respectively, and this decreased for all groups with salivary pellicle to 5.9 (2.0), 164.5 (4.8), 116.9 (4.3); this was statistically significant for Red Bull and Lucozade groups (p<0.0005).
Conclusions: Both energy and soft drinks tested, produced detectable bulk loss and surface softening changes in polished enamel. However, the acquired salivary pellicle provided a protective effect and reduced the erosive potential of both test solutions. This study provides insight into the erosive potential of common energy and sports drinks and how the acquired salivary pellicle mediates their effects on human enamel