The aim of this study was to assess the long-term effect after 7 years of an intensive fluoride varnish program in the age interval 11–14 compared to a standard biannual fluoride varnish program. Special reference was made to factors explaining the individual variance in caries incidence between 11–14 and 11–17 years as well as the net benefit of the intensified fluoride varnish program. Two caries measures, one unweighted (DFS₀) and one weighted (DFS1), were used. Besides three caries measures D1-D3 were used to distinguish different grades of decay where D1 is enamel lesion and D3 dentinal lesion. The results show statistically significant differences for the age interval 11–17 years according to mean values of DFS₀, DFS1 and D1. Regression analyses for caries incidence in the time interval 11–14 gives only explanation (i.e. significant estimated coefficient value) for caries prevalence at 11 years of age irrespective of caries measure, but in the age interval 11–17 years regression analysis also gives explanation for the variable father’s education and the fluoride preventive measures in the age interval 11–14. The cost/benefit analysis shows net total costs of 3 880 SEK and net total benefits of 5,000 SEK over a time span of 10 years discounted to 1982 using an annual discount rate of 5%.

Keywords:
Economic assessment, Fluoride varnish, Long-term effect, Proximal caries incidence, Schoolchildren
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© 1994 S. Karger AG, Basel
1994
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