Thousands of school children are having their teeth painted with fluoride as part of a scheme to tackle poor dental health.
In total 17 schools and nurseries are taking part in Portsmouth - where rates of decay are well above the national average.
Half of all children have damaged teeth by the time they start school - and three quarters of the decay goes untreated.
But the fluoride varnish treatment isn't without its opponents. Our social affairs correspondent Christine Alsford reports from an infants school where dozens of children have been treated for the first time.
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