title: A Retrospective Study of the 3-Year Survival Rate of Resin-Modified Glass-Ionomer Cement Class II Restorations in Primary Molars.
abstract: OBJECTIVE
  To determine the three-year survival rate of Class II resin-modified glass-ionomer cement (RMGIC), Vitremer, restorations in primary molars and to compare these results with measurements of survival of Class II restorations of standard restorative materials.
  
  
  METHODS
  Data on Class II restorations placed in primary molars during a six-year period were collected through a chart review and radiographic evaluation in the office of a board-certified pediatric dentist. A radiograph showing that the restoration was intact was required at least 3 years after placement to qualify as successful. If no radiograph existed, the restoration was excluded. If the restoration was not found to be intact radiographically or was charted as having been replaced before three years it was recorded as a failure. The results of this study were then compared to other standard restorative materials using normalized annual failure rates.
  
  
  RESULTS
  Of the 1,231 Class II resinmodified glass-ionomer cement restorations placed over six years 427 met the inclusion criteria. There was a 97.42% survival rate for a 3-year period equivalent to an annual failure rate of 0.86%.
  
  
  CONCLUSIONS
  A novel approach comparing materials showed that in this study Vitremer compared very favorably to previously published success rates of other standard restorative materials (amalgam, composite, stainless steel crown, compomer) and other RMGIC studies.
authors.forename: Mark
authors.initials: M
authors.lastname: Webman
authors.forename: Ezat
authors.initials: E
authors.lastname: Mulki
authors.forename: Rosie
authors.initials: R
authors.lastname: Roldan
authors.forename: Oscar
authors.initials: O
authors.lastname: Arevalo
authors.forename: John F
authors.initials: JF
authors.lastname: Roberts
authors.forename: Franklin
authors.initials: F
authors.lastname: Garcia-Godoy
mesh_terms: D002648:Child; D002675:Child, Preschool; D020770:Compomers / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003442:Crowns; D003723:Dental Amalgam / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry; D019232:Dental Restoration Failure / Q000706:statistics & numerical data; D003793:Dental Restoration, Permanent / Q000145:classification* / Q000706:statistics & numerical data; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008963:Molar / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography; D019279:Resin Cements / Q000737:chemistry*; D012189:Retrospective Studies; D013193:Stainless Steel / Q000737:chemistry; D016019:Survival Analysis; D014094:Tooth, Deciduous / Q000000981:diagnostic imaging / Q000473:pathology*; D016896:Treatment Outcome
chemical_list: D020770:Compomers; D003188:Composite Resins; D003764:Dental Materials; D005899:Glass Ionomer Cements; D019279:Resin Cements; C084550:Vitremer; D013193:Stainless Steel; D003723:Dental Amalgam
keywords: Dental cavity preparation; Dental materials; Dental restoration failure; Glass-ionomer cements; Survival analysis