The cost-effectiveness of fluoridating water supplies in New Zealand.


OBJECTIVE Tooth decay has been substantially reduced in New Zealand, and the difference in caries rates between fluoridated and non-fluoridated areas has narrowed. We investigated whether it is cost-effective to fluoridate water supplies that are now non-fluoridated. METHODS The net cost of fluoridation was based on the cost of fluoridating a water supply… (More)


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