Republican Gov. Spencer Cox signed legislation Thursday barring cities and communities from deciding whether to add the mineral to their water systems.
Florida, Ohio and South Carolina are considering similar measures, while in New Hampshire, North Dakota and Tennessee, lawmakers have rejected them. A bill in Kentucky to make fluoridation optional stalled in the state Senate.
The American Dental Association sharply criticized the Utah law, saying it showed “wanton disregard for the oral health and well-being of their constituents.”
Cavities are the most common chronic childhood disease, the ADA noted. Fluoride strengthens teeth and reduces cavities by replacing minerals lost during normal wear and tear, according to the U.S. Centers for Disease Control and Prevention.
Generally they check concentrations and will bring it down to acceptable levels if the naturally occuring levels are too high.