Millions of Americans are embracing a healthy lifestyle and turning to bottled water as part of their diet. Bottled water is often marketed as being better for you, but it may be doing your teeth a disservice. Your bottled water could be missing some elements that promote oral health.
For over 60 years, the United States has been involved in a public health program called community water fluoridation. Many communities throughout the nation added fluoride to their water supply, and the result was a significant decrease in childhood cavities. In fact, community water fluoridation is the single most effective public health measure for tooth decay prevention to date.
The Water Works
Fluoride battles dental cavities by strengthening tooth enamel and remineralizing teeth damaged by acid. Unfortunately, the majority of bottled waters contain little or no fluoride. In fact, fluoride may even be removed from water during the filtration process. Bottling companies and home filtration systems use reverse osmosis or distillation units to remove sediments and impurities from the water. Reverse osmosis is a water purification system that filters out minerals and some chemicals, while distillation uses heat to literally steam water away from impurities. The steam is then cooled and turned back into water.
What's gaining steam in the water industry is the sale of bottled water -- and you'll need to drink plenty of it in order for your teeth to benefit. According to the American Dental Association, fluoridated water should contain 0.7-1.2 milligrams per liter of fluoride for effective cavity protection. While fluoride intake varies according to weight, the ADA states that ingesting 4 mg of fluoride per day is adequate for the average 160 pound person. Since most bottled waters contain less than 0.3 mg per liter of fluoride, you'll need to stock up to get the amount of fluoride recommended by the ADA!