Caries-Preventive Effect of Two Different Topical Fluoride Concentrations with Two Different Frequencies of Application in Preschool Children

The effects of standard topical amine fluoride solution (1% F) and a low-fluoride solution (0.5% F) with two different frequencies of application (5 and 10 times a year) on 2 years dental caries increment were compared in a double-blind clinical trial involving 199 kindergarten children. The results suggest that increased frequency of application of a low fluoride topical solution (10 times a year) may provide caries protection in preschool children with relatively high caries activity.