title: Effect of cavity form on the durability of glass ionomer cement restorations in primary teeth: a three-year clinical evaluation.
abstract: The effect of cavity form on the durability of glass ionomer cement restorations in primary molars was studied in a clinical, intraindividual, three-year longitudinal study. Proximal restorations were placed in either a microcavity or a modified Black's Class II cavity with rounded internal and external angles. A total of twenty-eight pairs were assessed. After two years the cumulative failure rate was 16 percent for each of the cavity types and after three years 25 percent for the microcavity and 32 percent for the modified Black's Class II cavity. No statistical difference was found in the longevity of the restorations placed in the two different types of cavities.
authors.affiliation: Department of Pedodontics, Umeå University, Sweden.
authors.forename: I E
authors.initials: IE
authors.lastname: Andersson-Wenckert
authors.forename: J W
authors.initials: JW
authors.lastname: van Dijken
authors.forename: R
authors.initials: R
authors.lastname: Stenberg
mesh_terms: D000704:Analysis of Variance; D002648:Child; D003737:Dental Cavity Preparation / Q000379:methods*; D003793:Dental Restoration, Permanent / Q000379:methods* / Q000592:standards; D005899:Glass Ionomer Cements; D006801:Humans; D008963:Molar; D011787:Quality of Health Care; D013997:Time Factors; D014094:Tooth, Deciduous; D016896:Treatment Outcome
chemical_list: D005899:Glass Ionomer Cements