Fluoride is a mineral that enhances bone structure, including teeth, when provided in optimal amounts throughout life. It increases the ability of teeth to resist decay. Fluoride occurs naturally in groundwater. It is also commonly found in foods such as breads and beverages that are made using fluoridated water and in many public fluoridated water supplies, as well as in toothpastes, mouthrinses, and gels. Tooth decay can be reduced by 50 to 70 percent with exposure to the proper amounts of fluoride.
Fluoride protects teeth from developing tooth decay in three ways: