Black and Mexican-American children have highest rates of the more severe forms of dental fluorosis
The following Table was published in Morbidity and Mortality Weekly Report (MMWR), published by the Centers for Disease Control and Prevention, in 2005:

Reference:
Beltrán-Aguilar ED, Barker LK, Canto MT, et al. 2005. Surveillance for dental caries, dental sealants, tooth retention, endentulism, and enamel fluorosis—United States, 1988- 1994 and 1999-2002. CDC, MMWR, Surveillance Summaries, August 26, 2005, vol. 54, No SS-3, pp. 1-44.
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