Clinical effectiveness of an autopolymerized fissure sealant after 2 years

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Abstract
The clinical effectiveness of Delton fissure sealant was studied in 205 children, ages 6-10 yr (mean age 7 1/2). Children (993) in grades 1, 2, 3 and 4 were screened and subjects were selected if there was evidence of previous dental caries in the mouth, and a pair of contralateral maxillary or mandibular 1st permanent molar teeth were free of caries. Pedodontists (2) independently examined the children in a mobile van equipped with 2 operatories, and each applied sealants to approximately 1/2 of the subjects. After 11 mo., in 186 subjects there were 10 sealants partially lost, 5 experimental teeth carious or filled and 53 control teeth carious or filled. After 24 mo., in 175 subjects there were 4 sealants completely lost, 12 sealants partially lost, 11 experimental teeth carious or filled and 89 control teeth carious or filled. Sealant retention was 92% after 11 mo. and 85% after 24 mo. Percent effectiveness in caries reduction was 90% after 11 mo. and 88% after 2 yr.