Adding fluoride to water supplies offers only a modest benefit to the dental health of children, researchers have found.The scientists said water fluoridation can be seen as a cost-effective way to help reduce some of the 1.7 billion a year the NHS spends on dental caries.However, the team found that the benefits of fluoride in water appear to be smaller than previously seen in studies from half a century ago, when fluoride toothpaste was less widely available in the UK.
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