The effects of sparkling water on your teeth

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Plain sparkling water is generally safe for your teeth and is far better than sugary soda or juice. Although carbonation makes water slightly more acidic, the American Dental Association says plain sparkling water has little effect on tooth enamel compared with regular water. The bigger concern is flavored sparkling water, especially citrus varieties or drinks with added sugar or acids, which can increase the risk of enamel erosion if sipped throughout the day. For the safest choice, drink it with meals, avoid swishing it around your mouth, and continue drinking regular water too.

Source

Ryu HK, Kim YD, Heo SS, Kim SC. Effect of carbonated water manufactured by a soda carbonator on etched or sealed enamel. Korean J Orthod. 2018 Jan;48(1):48-56. doi: 10.4041/kjod.2018.48.1.48. Epub 2017 Nov 19. PMID: 29291188; PMCID: PMC5702778.

Additional Reading

https://betterreport.com/is-sparkling-water-bad-for-your-teeth/

https://www.mouthhealthy.org/nutrition/the-truth-about-sparkling-water-and-your-teeth

https://www.mcgill.ca/oss/article/health-and-nutrition-quackery/carbonated-water-bad-your-teeth