Epidemiology and Oral Disease Prevention Program, National Institute of Dental Research, Bethesda, MD 20892.
In 1980, the prevalence of dental caries and dental fluorosis was assessed among lifetime resident children in four areas of Illinois with water fluoride concentrations of 1x, 2x, 3x, and 4x above the optimal level. In 1985, the same areas were resurveyed to determine if changes occurred in dental caries and fluorosis.