title: Conventional versus resin-modified glass-ionomer cement for Class II restorations in primary molars. A 3-year clinical study.
abstract: OBJECTIVE
  To compare the clinical performance of two glass-ionomer cements (GICs)for Class II restorations in primary molars: a conventional cement (Fuji II) and a resin-modified cement (Vitremer).
  
  
  METHODS
  Split mouth and random assignment to the two materials were used for the majority of the molars.
  
  
  METHODS
  Forty consecutive 4-7-year-old children were included. One operator made 115 restorations: 53 with Vitremer and 62 with Fuji II. The restorations were evaluated clinically, radiographically and from colour photographs.
  
  
  RESULTS
  The cumulative success rate of the Vitremer restorations was 94% and that of the Fuji II restorations 81%. The difference is statistically significant. The risk of a failed restoration was more than five times higher with Fuji II than with Vitremer as the restorative material. Of the 13 unsuccessful restorations, seven had lost their retention, four had secondary caries, and two were fractured.
  
  
  CONCLUSIONS
  The resin-modified GIC offered advantages over the conventional GIC for restoring approximal caries in primary molars.
authors.affiliation: Department of Paediatric Dentistry, Eastman Dental Institute, Stockholm, Sweden. sofie.hubel@ftv.sll.se
authors.forename: S
authors.initials: S
authors.lastname: Hübel
authors.forename: I
authors.initials: I
authors.lastname: Mejàre
mesh_terms: D001672:Biocompatible Materials; D002648:Child; D002675:Child, Preschool; D003188:Composite Resins / Q000737:chemistry / Q000627:therapeutic use*; D003627:Data Interpretation, Statistical; D019140:Dental Care for Children / Q000379:methods; D003731:Dental Caries / Q000628:therapy*; D003737:Dental Cavity Preparation / Q000145:classification; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D019554:Dental Restoration Wear / Q000706:statistics & numerical data; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008963:Molar; D019279:Resin Cements / Q000737:chemistry / Q000627:therapeutic use*; D014094:Tooth, Deciduous; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; D003188:Composite Resins; D005899:Glass Ionomer Cements; D019279:Resin Cements