Prevention of dental erosion of a sports drink by nano-sized hydroxyapatite in situ study
International Journal of Paediatric Dentistry
Aim
To evaluate the inhibitory effects of the sports drink containing nano-sized hydroxyapatite (nano-HA) on dental erosion in situ.
Design
The
study had a single-blind, two-treatment crossover design. The two
treatment groups were a control group (CG; Powerade only) and an
experimental group (EG; 0.25% wt/vol nano-HA was added to Powerade). Ten
subjects wore removable palatal appliances containing bovine enamel
specimens. The appliances were immersed in each drink for 10 mins, 4
times a day for 10 days. The tooth surface microhardness (SMH) was
tested, and the erosion depth and the morphology of the tooth surface
were observed. The data were analysed by repeated measures anova and t-test.
Results
Between the baseline and the 10th day, SMH was decreased by 80% in the specimens of the CG (P < 0.001), whereas there was only a 6% decrease in the SMH of the specimens in the EG. An erosion depth of 12.70 ± 4.66 μm
and an irregular tooth surface were observed on the 10th day in the
specimens of the CG. No dental erosions, however, was observed in the
specimens of the EG.
Conclusions
The sports drink containing 0.25% nano-HA was effective in preventing dental erosion in situ.
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