The role of fluoride in cavity prevention
A U.S. Air Force service member pours herself a glass of tap water from a break room at Cannon Air Force Base, N.M., May 10, 2012. The local areas have a higher than naturally occurring fluoride level in their water systems which raises concerns of fluorosis, a condition that can cause permanent staining and pitting or mottling of the teeth. (U.S. Air Force photo by Airman 1st Class Alexxis Pons Abascal)

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Photo by: Airman st Class Alexxis Pons Abascal  |  VIRIN: 120510-F-YG475-013.JPG