Anti-caries effect of a 2% Na2PO3F-dentifrice in a Danish fluoride area

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Abstract
A 3-yr experimental toothbrushing study was conducted in a natural fluoride area in Denmark to evaluate the anti-caries effect of a 2% sodium monofluorophosphate dentifrice. In a previous report the results for the total population of 1407 schoolchildren, representing a broad age-span (7-12 yr), at the commencement of the study in 1970 were given. Results are presented for 2 subpopulations of 8-yr-olds and 11-yr-olds at the commencement of the study. Differential analysis of the effect of the test dentifrice on defined types of surfaces for the subpopulations is given. The evaluation was performed using the conventional DMF [decayed-missing-filled] indices and the recently published ECSI [Extrapolated Carious Surface Increment] Index. The test dentifrice had a valuable anti-caries effect in both age groups, above and beyond the effect of the waterborne fluoride. Proximal surfaces were affected most beneficially by the active agen in relative and absolute terms. An appreciable caries-preventive effect was also found on the pit and fissure surfaces.