Despite being one of the United States 10 greatest public health achievements of the 20th century (Centers of Disease Control and Prevention, 2000) Community water fluoridation receives only qualified endorsement from some systematic reviews of its effectiveness in preventing dental caries. Authors of one review found that fluoridation reduces caries in children but were reluctant to quantify the effect, citing poor quality of many studies (McDonagh et al.,2000). For adult populations, they reported insufficient evidence to draw conclusions, a finding echoed in a U.S. consensus panel that made “ no comment on primary prevention of .. caries in adults, as on evidence was available to address these questions” (NIH Consensus Statement Online,2001). The cited lack of evidence in adults hampers the sevelipment of health policy. For example, an economic evaluation of community water fluoridation in Australia initially assumed no caries – preventive benefit for adults, although cost – effectiveness changed substantially in a sensitivity analysis that assumed benefit (Cobiac and Vos, 2012)