Data showed a significant decrease in dental caries across the entire country, with an average reduction of 25% occurring every 5 years. General trends indicated that a reduction in DMFT index values occurred over time, that a further reduction in DMFT index values occurred when a municipality fluoridated its water supply, and mean DMFT index values were lower in larger than in smaller municipalities.
—-Int Dent J. 2012 Dec;62(6):308-14. doi: 10.1111/j.1875-595x.2012.
Decline in dental caries among 12-year-old children in Brazil, 1980-2005.
Lauris JR, da Silva Bastos R, de Magalhaes Bastos JR.
Department of Paediatric Dentistry, University of São Paulo, Bauru, São Paulo, Brazil. email@example.com