Abstract
The aim of the present study was to evaluate the retention and effectiveness of a bis-GMA type of fissure sealant which polymerizes after conventional mixing of the two catalyst/activator components (Concise Enamel Bond System). Unilateral sealing of homologous pairs of permanent first molars was carried out by a dental hygienist. Of the 451 sealed sites sealant was present in 73%, partly missing in 8%, and completely missing in 18% after 1 year. The effectiveness of the treatment in preventing occlusal caries was highly significant and the caries reduction was found to be about 70%. A strong relationship between status of sealant and occlusal decay was demonstrated. The shortcomings of the half-mouth design when evaluating sealants as a caries-preventive measure in public dental health programs are discussed.
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