Many bottled waters contain fluoride. Now the government says companies can claim cavity prevention among the benefits of the added fluoride.
About two-thirds of the U.S. population drinks tap water with fluoride.
But the surge in popularity of bottled water had dentists and others worrying that people who drink only bottled water without fluoride were at greater risk of developing tooth decay.
The regulators say the claim that bottled fluoridated water may reduce the risk of cavities is not intended for use on bottled water marketed to infants.