title: Two-year clinical performance of Class V resin-modified glass-lonomer and resin composite restorations.
abstract: While a one-year report had been previously published, this study was undertaken to evaluate the clinical performance and appearance of a resin-modified glass ionomer and a resin composite over two years. Thirty-seven pairs of restorations of FujI II LC and Z 250/Single Bond were placed in caries-free cervical erosion/abfraction lesions without tooth preparation. Restorations were clinically evaluated at baseline, 6, 12, 18 and 24 months using modified Ryge/USPHS criteria. No statistically significant difference (p = 0.13) was observed in the overall performance of the materials. Retention was 96% for the resin-modified glass ionomer and 81% for the resin composite, with no additional restorations of either material lost after one year. As previously reported, retention of the Z 250 restorations at six months was below the minimum specified in the ADA Acceptance Program for Dentin and Enamel Adhesives. The resin composite restorations generally had a better appearance, with a 100% alpha rating in color match, versus 85% for the resin-modified glass ionomer.
authors.affiliation: Facultad de Estomatología, Benémerita Universidad Autónoma de Puebla, Puebla, Mexico.
authors.forename: William W
authors.initials: WW
authors.lastname: Brackett
authors.forename: Alejandro
authors.initials: A
authors.lastname: Dib
authors.forename: Martha Goël
authors.initials: MG
authors.lastname: Brackett
authors.forename: Adriana A
authors.initials: AA
authors.lastname: Reyes
authors.forename: Blanca E
authors.initials: BE
authors.lastname: Estrada
mesh_terms: D000328:Adult; D000368:Aged; D017438:Bisphenol A-Glycidyl Methacrylate; D003188:Composite Resins; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D006801:Humans; D008137:Longitudinal Studies; D008875:Middle Aged; D019279:Resin Cements; D012117:Resins, Synthetic; D014072:Tooth Abrasion / Q000628:therapy*; D019237:Tooth Cervix; D014077:Tooth Erosion / Q000628:therapy*
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; C444701:Filtek Z250; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012117:Resins, Synthetic; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate