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Fissure sealing with Nuva-Seal in a public health program for Danish schoolchildren after 12 months' observation.

– The purpose of the present study was to evaluate the effect of the Nuva-Seal® method in a public health program for Danish schoolchildren, when applied by a specially trained chairside assistant. Forty-nine children 7 to 9 years of age had a total of 148 permanent first molars sealed. The results after 12 months showed that retention of sealant material was comparable to that found in other studies. However, no caries preventive effect of the procedure could be demonstrated. It is concluded that sealing should be performed earlier than was done in this study in older to prevent caries.