Water fluoridation
Health and dental organizations worldwide have endorsed its safety and effectiveness. Its use began in 1945, following studies of children in a region where higher levels of fluoride occur naturally in the water. Further research showed that moderate fluoridation prevents tooth decay.
Dental public health
The development of artificial water fluoridation began in 1945 in the Grand rapid Michigan followed by Newburgh, New York and Evanston, Illinois. In 1955 three towns Watford, Kilmarnock and Anglesey trialled the water fluoridation implementation scheme. In 1960 the Republic of Ireland implemented all public water supplies with artificial fluoridated water and four years later extending this into the main cities of Dublin and Cork.