Northland District Health Board says a study of children's teeth shows some benefits from two years of fluoridation in the Far North.
The health board asking the Far North District Council to resume fluoridation in Kaitaia and Kaikohe, following its report on a two-year trial.
It says dental caries in high-risk five and six year olds in Kaitaia has decreased by 5% in the past two years, while in Dargaville, which is unfluoridated, caries increased by 15% in the same period.
