Water fluoridation
Water fluoridation was first adopted in Brazil in the city of Baixo Guandu, ES, in 1953. A 1974 federal law required new or enlarged water treatment plants to have fluoridation, and its availability was greatly expanded in the 1980s, with optimum fluoridation levels set at 0.8 mg/L. Today, the expansion of fluoridation in Brazil is a governmental priority; Between 2005 and 2008, fluoridation became available to 7.6 million people in 503 municipalities. As of 2008, 3,351 municipalities (60.6%) had adopted fluoridation, up from 2,466 in 2000.