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Fluoride in Plaque Following Use of Dentifrices Containing Sodium Monofluorophosphate

Gibbs Dental Division, Unilever Research, Port Sunlight Laboratory, Bebington, Wirral, England L63 3JW

S.N. Morgan

Gibbs Dental Division, Unilever Research, Port Sunlight Laboratory, Bebington, Wirral, England L63 3JW

C.K. Burchell

Gibbs Dental Division, Unilever Research, Port Sunlight Laboratory, Bebington, Wirral, England L63 3JW

Previous work showed that plaque fluoride increased with increasing NaF content of mouthwashes following daily use. The main aim of this study was to test whether a similar relationship was detectable after regular use of dentifrices containing amounts of sodium monofluorophosphate equivalent to 1000, 1500, and 2500 µg F/g. Plaque was collected from three groups, each consisting of approximately 80 children, who had each used one of the dentifrices for one year. Plaque fluoride increased significantly with increasing Na₂FP_O3 content of the dentifrices. For the 1000-µg-F/g group, plaque fluoride also increased significantly with increasing frequency of dentifrice use, but did not correlate with amount of dentifrice applied per brushing. The inverse correlation observed between mean plaque fluoride concentrations and mean three-year caries increments suggests that oral fluoride measurements may prove valuable in estimating the likely anti-caries efficacy of fluoride-containing dental products.

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Journal of Dental Research, Vol. 68, No. 2, 130-133 (1989)
DOI: 10.1177/00220345890680020601


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