title: Ketac Molar Versus Dyract Class II restorations in primary molars: twelve month clinical results.
abstract: The aim of the present clinical study was an in vivo evaluation of an improved conventional glass ionomer cement Ketac Molar (ESPE), compared to a polyacid modified composite resin, Dyract (Dentsply/De Trey), used in primary molars. Fifty-three Ketac Molar and fifty-two Dyract restorations were placed in box-only preparations in primary molars. The application time for the chemically cured Ketac Molar, was longer compared to the light-cured Dyract. In comparing the materials, no differences were found, comparing both materials regarding secondary caries, marginal adaptation, wear and fracture toughness. One case of recurrent caries adjacent to a Ketac Molar restoration and two cases in the Dyract group were reported. Two Ketac Molar restorations and one Dyract showed bulk fracture at the time of evaluation. At the twelve-month evaluation, no difference between the investigated materials was registered, which indicates that Ketac Molar can be used as a proximal restoration in the primary dentition. It should be emphasized, however, that one-year data should not be extrapolated to indicate the long-term success of restorations.
authors.affiliation: Department of Cariology, Endodontology, Pedodontology at Academic Centre for Dentistry Amsterdam (ACTA), The Netherlands.
authors.forename: L A
authors.initials: LA
authors.lastname: Marks
authors.forename: W E
authors.initials: WE
authors.lastname: van Amerongen
authors.forename: P J
authors.initials: PJ
authors.lastname: Borgmeijer
authors.forename: H J
authors.initials: HJ
authors.lastname: Groen
authors.forename: L C
authors.initials: LC
authors.lastname: Martens
mesh_terms: D000704:Analysis of Variance; D002327:Cariostatic Agents / Q000627:therapeutic use*; D002648:Child; D020770:Compomers; D003731:Dental Caries / Q000628:therapy*; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D005899:Glass Ionomer Cements / Q000627:therapeutic use*; D006801:Humans; D008137:Longitudinal Studies; D008689:Methacrylates / Q000627:therapeutic use*; D008963:Molar; D055502:Secondary Prevention; D017640:Silicates / Q000627:therapeutic use*; D018709:Statistics, Nonparametric; D014094:Tooth, Deciduous; D016896:Treatment Outcome
chemical_list: D002327:Cariostatic Agents; D020770:Compomers; C088486:Dyract; D005899:Glass Ionomer Cements; D008689:Methacrylates; D017640:Silicates; C110712:ketac-molar