Arora S, et al. - In this present study, the physicians investigated whether the effect of water fluoride level on enamel fluorosis was different among different race/ethnicity groups in US school children. They found no association between enamel fluorosis and race/ethnicity. Findings suggested that exposure to similar levels of fluoride in the water did not appear to place certain race/ethnic groups at a higher risk for developing enamel fluorosis. Lowering the optimal range of drinking water fluoride to a single value of 0.7 ppm would provide a level of protection against enamel fluorosis that might benefit all race/ethnicity groups.