title: 5-year clinical performance of resin composite versus resin modified glass ionomer restorative system in non-carious cervical lesions.
abstract: OBJECTIVE
  To comparatively assess the 5-year clinical performance of a 1-bottle adhesive and resin composite system with a resin-modified glass ionomer restorative in non-carious cervical lesions.
  
  
  METHODS
  One operator placed 70 restorations (35 resin modified glass ionomer restorations and 35 resin composite restorations) in 30 patients under rubber dam isolation without mechanical preparation. The restorations were directly assessed by 2 independent examiners, using modified USPHS criteria at baseline and 6, 12, 24 and 60 months.
  
  
  RESULTS
  Twenty-two patients were available for recall after 5 years (73.3% recall rate) and 55 out of 70 restorations were evaluated. Excellent agreement was registered for all criteria between examiners (kappa > or = 0.85). Sixteen composite restorations were dislodged (51.5% retention) and 1 ionomer restoration was lost (96.4% retention). The McNemar test detected significant differences in resin composite restorations between baseline and 5-year recall for marginal integrity (p<0.001) and retention (p=0.004). For resin modified glass ionomer restorations, no significant differences were identified for all criteria (p>0.05). When comparing both materials, the Fisher exact test pointed out significant differences in retention (p=0.002) after 5 years of clinical service.
  
  
  CONCLUSIONS
  After 5 years of evaluation, the clinical performance of resin modified glass ionomer restorations was superior to resin composite restorations.
authors.affiliation: Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Brazil.
authors.forename: Eduardo Batista
authors.initials: EB
authors.lastname: Franco
authors.forename: Ana Raquel
authors.initials: AR
authors.lastname: Benetti
authors.forename: Sérgio Kiyoshi
authors.initials: SK
authors.lastname: Ishikiriama
authors.forename: Sérgio Lima
authors.initials: SL
authors.lastname: Santiago
authors.forename: José Roberto Pereira
authors.initials: JR
authors.lastname: Lauris
authors.forename: Mauro Fonseca Ferreira
authors.initials: MF
authors.lastname: Jorge
authors.forename: Maria Fidela de Lima
authors.initials: MF
authors.lastname: Navarro
mesh_terms: D000134:Acid Etching, Dental; D000293:Adolescent; D000328:Adult; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods*; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008875:Middle Aged; D019279:Resin Cements / Q000737:chemistry*; D013499:Surface Properties; D019237:Tooth Cervix / Q000473:pathology*; D014076:Tooth Diseases / Q000628:therapy*
chemical_list: D003188:Composite Resins; C420130:Excite cement; D005899:Glass Ionomer Cements; D008689:Methacrylates; D019279:Resin Cements; C121818:Tetric ceram; C084550:Vitremer