title: A clinical trial to evaluate the retention of a silver cermet-ionomer cement used as a fissure sealant.
abstract: A randomized clinical trial was under-taken to compare the retention of a silver cermet-ionomer cement, Ketac Silver, with a conventional, autopolymerizing BIS-GMA resin sealant, Delton, using matched pairs of fissure sites within each subject's mouth. One hundred twenty matched contralateral pairs of fissure sites in first and second permanent molars of 53 school children were sealed with the two materials. The choice of site and material was selected at random. The ages of the children ranged from five to 16 years; first permanent molars were sealed in the five- to 10-year age group, and second permanent molars in the 11- to 16-year age group. Sealants were assessed as present, partly present, or absent at 6, 12, and 24 months. The number of pairs of sites available for reassessment declined from 102 at six months to 59 at 24 months as patients were lost to the study. Retention rates were higher for the Ketac Silver sealants at all three inspection intervals (P < 0.01): 93% compared with 74% at six months, 81% compared with 65% at 12 months, and 83% compared with 58% at 24 months. When analyzed according to age range, the difference between the retention rates was statistically significant in the five- to 10-year-olds but not significant in the 11- to 16-year-olds. The conclusion reached in this study was that cermet cement was better retained than conventional resin sealants in younger children.
authors.forename: R W
authors.initials: RW
authors.lastname: Mills
authors.forename: I A
authors.initials: IA
authors.lastname: Ball
mesh_terms: D000293:Adolescent; D017438:Bisphenol A-Glycidyl Methacrylate; D016722:Cermet Cements; D002648:Child; D002675:Child, Preschool; D001840:Dental Bonding; D005500:Follow-Up Studies; D006801:Humans; D016555:Matched-Pair Analysis; D010895:Pit and Fissure Sealants
chemical_list: D016722:Cermet Cements; D010895:Pit and Fissure Sealants; D017438:Bisphenol A-Glycidyl Methacrylate