“…Recently, both an increase and a decrease in the prevalence of fluorosis have been reported [Riordan, 2002;Whelton et al, 2006;Do and Spencer, 2007c;Beltran-Aguilar et al, 2010]; however, there is general agreement that moderate to severe forms of fluorosis in areas with non-fluoridated or optimally fluoridated drinking water are uncommon [Stephen et al, 2002;Bottenberg et al, 2004;Cochran et al, 2004a;Conway et al, 2005;Vallejos-Sanchez et al, 2006;Do and Spencer, 2007c;Beltran-Aguilar et al, 2010]. Also, mild fluorosis is of little concern for parents and has little or no effect on children's oral health-related quality of life [Sigurjons et al, 2004;Do and Spencer, 2007a;Chankanka et al, 2010;Browne et al, 2011].…”