Fluoride levels in the drinking water at birth influence tooth loss well into adulthood.  Fluoridation exposure affects tooth loss in your 40’s and 50’s regardless of exposure in your 20’s and 30’s.  In a study of Louisiana Medicaid dental patients every $1 invested in water fluridation, the state found $38 in reduced dental costs.  Scientists continue to show adding fluoride to water is safe and aids tooth health.