Drinking water fluoridation was considered as a great health-related achievement of the twentieth century. Later a study was conducted by the Centers for Disease Control and Prevention in the U.S. in order to better understand the effects of fluoride treatment. The water fluoridation reporting system was merged with the dental examination data of around ten years, which was extracted from National Health and Nutrition Examination Surveys (1999-2004; 2011-2014).

The community study, at last, revealed that children and adolescents who consumed fluoridated drinking water were least affected by dental caries. Around a 30% reduction rate in dental caries was observed. With sufficient evidence, it was proved that community water fluoridation would provide proper dental health benefits for children and adolescents in the U.S. It is this advised to start consuming fluoridated drinking water as early as possible, anywhere between the ages of 2-8 years.

Maria Ryan, the President of the American Association for Dental Research said, "This study confirms previously reported findings and provides additional evidence in support of water fluoridation as a core public health intervention promoting oral health; AADR supports community water fluoridation as a safe and effective, evidence-based intervention for the prevention of dental caries and this report further adds to that evidence base."