The cause of caries is bacterial breakdown of the hard tissues of the teeth (enamel, dentin and cementum). This occurs due to acid made from food debris or sugar on the tooth surface. Simple sugars in food are these bacteria's primary energy source and thus a diet high in simple sugar is a risk factor.
Bedford County, Tennessee (TN) County population in 2014: 46,627 (44% urban, 56% rural); it was 37,586 in 2000. County owner-occupied with a mortgage or a loan houses and condos in 2010: 7,508. County owner-occupied free and clear houses and condos in 2010: 4,026. County owner-occupied houses and condos in 2000: 10,223.
Shelby County is a county in the U.S. state of Tennessee. As of the 2010 census, the population was 927,644. It is the state's largest county both in terms of population and geographic area. Its county seat is Memphis, a port on the Mississippi River and the second most populous city in Tennessee. The county was named for Governor Isaac Shelby of Kentucky. Shelby County is part of the Memphis, TN-MS-AR Metropolitan Statistical Area. It is bordered on the west by the Mississippi River. Located wi