Published on 2 Apr 2016
Water fluoridation is the controlled addition of fluoride to a public water supply to reduce tooth decay. Fluoridated water has fluoride at a level that is effective for preventing cavities; this can occur naturally or by adding fluoride. Fluoridated water operates on tooth surfaces: in the mouth it creates low levels of fluoride in saliva, which reduces the rate at which tooth enamel demineralizes and increases the rate at which it remineralizes in the early stages of cavities. Typically a fluoridated compound is added to drinking water, a process that in the U.S. costs an average of about $1.02 per person-year. Defluoridation is needed when the naturally occurring fluoride level exceeds recommended limits.[5] A 1994 World Health Organization expert committee suggested a level of fluoride from 0.5 to 1.0 mg/L (milligrams per litre), depending on climate. Bottled water typically has unknown fluoride levels.

Joanne Rullan¹s interests are music, film, healthy eating and physical fitness. Her creativity and vision make her a power-player on today's media landscape. Ms. Rullan also has over 20 years¹ experience working in finance and is currently employed at a major investment bank in private equity.