What is the ideal fluoride concentration in community water supplies for optimal dental health?

The ideal fluoride concentration in community water supplies for optimal dental health is 0.7 parts per million (ppm). This level has been established as effective in reducing the incidence of dental caries (tooth decay) while minimizing the risk of dental fluorosis, which can occur with excessive fluoride exposure.

Fluoride at this concentration has proven beneficial in strengthening tooth enamel and making it more resistant to acid attacks from bacteria. This optimal balance promotes oral health in the population by providing the preventive benefits of fluoride without leading to harmful side effects. Public health organizations, including the U.S. Centers for Disease Control and Prevention (CDC) and the American Dental Association (ADA), endorse this concentration as part of community water fluoridation programs for enhancing dental health in both children and adults.