Sparkling Water Compared to Soda for Oral Health

A recent study published in the Journal of Dental Research examined how various beverages influence oral acidity, a key factor in tooth enamel erosion. Researchers measured pH changes in the mouths of 120 adult participants after consuming equal volumes of unsweetened sparkling water, sugar‑sweetened soda, and a control beverage of plain water. The experiment involved a crossover design, with each participant testing all three drinks on separate days while maintaining consistent oral hygiene practices.

The findings indicated that unsweetened sparkling water produced a significantly lower drop in oral pH compared with sugar‑sweetened soda, whose acidity remained elevated for up to 30 minutes post‑consumption. Plain water showed the least impact on mouth acidity. The authors concluded that, while carbonated, unsweetened sparkling water is less harmful to dental enamel than sugary sodas, moderation and regular brushing remain essential for oral health.