Blackwell Publishing Journal Backfiles 1879-2005
Abstract Individual caries experience (DMFT) and the total fluoride content of dental plaque were determined for 72 schoolchildren, aged 9.7–13.0 years, lifelong residents in one of three New South Wales towns, where the fluoride levels of the reticulated water supplies were: Katoomba, 〈 0.1 parts/106; Sydney, 1.0 parts/106 for 4 years; and Yass, 1.0 parts/106 for 16 years, prior to sampling. The mean fluoride content of plaque in Sydney (22.6, s.d. =± 16.8 parts/106) and Yass (25.6, s.d. =± 16.4 parts/106) differed significantly (t = 2.27, P 〈 0.05 and t = 3.30, P 〈 0.02, respectively) from that in Katoomba (13.5, s.d. =± 8.3 parts/106). Significant inverse associations were demonstrated between total plaque fluoride and individual caries experience (DMFT) in Sydney (r =−0.45, P 〈 0.025) and overall (r =−0.28, P 〈 0.010). Inverse trends were established between plaque quantity (dry weight of plaque collected) and fluoride levels. No associations could be demonstrated between fluoride treatment (dentifrice, tablets or topical application) and plaque fluoride, DMFT or plaque quantity.
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