title: Clinical evaluation of two one-bottle dentin adhesives at three years.
abstract: BACKGROUND
  The method currently used to adhere resin to dentin involves etching, priming and bonding. Many commercial adhesives now combine priming and bonding functions in a single solution, and these are frequently called one-bottle adhesives. The purpose of this study was to compare the 36-month clinical performance of two commercial one-bottle adhesives.
  
  
  METHODS
  The authors enrolled 33 patients with noncarious cervical lesions in the study. A total of 101 lesions were restored with either a filled, ethanol-based adhesive (OptiBond Solo, SDS Kerr) or an unfilled, acetone-based adhesive (Prime & Bond 2.1, Dentsply Caulk) and a hybrid resin-based composite. Enamel margins were not beveled, and no mechanical retention was placed. The restorations were evaluated at baseline and six months, 18 months and 36 months after placement using modified Cvar/Ryge criteria.
  
  
  RESULTS
  The retention rates at 36 months were 93.3 percent for the ethanol-based adhesive and 89.4 percent for the acetone-based adhesive. The difference in retention rates was not statistically significant. In both groups, 12 percent of the retained restorations had marginal staining, but no recurrent caries was detected around any restoration. Other restoration characteristics such as marginal adaptation and color match remained excellent three years after placement.
  
  
  CONCLUSIONS
  The performance of both adhesives was excellent during this 36-month clinical trial. At the most recent recall evaluation (that is, 36 months), the filled, ethanol-based adhesive exhibited slightly better bond durability, but the difference between the two materials was not statistically significant.
  
  
  CONCLUSIONS
  The one-bottle adhesives evaluated in this study provided excellent clinical retention of Class V restorations without mechanical retention. When the materials are used properly, restorations are retained at a high rate during at least three years of clinical service.
authors.affiliation: Department of Operative Dentistry, School of Dentistry, University of North Carolina at Chapel Hill, CB 7450, 302 Brauer, Chapel Hill, N.C. 27599-7450, USA. Ed_Swift@dentistry.unc.edu
authors.forename: E J
authors.initials: EJ
authors.lastname: Swift
authors.forename: J
authors.initials: J
authors.lastname: Perdigão
authors.forename: A D
authors.initials: AD
authors.lastname: Wilder
authors.forename: H O
authors.initials: HO
authors.lastname: Heymann
authors.forename: J R
authors.initials: JR
authors.lastname: Sturdevant
authors.forename: S C
authors.initials: SC
authors.lastname: Bayne
mesh_terms: D000328:Adult; D000368:Aged; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003116:Color; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003731:Dental Caries / Q000628:therapy; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D019554:Dental Restoration Wear; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005500:Follow-Up Studies; D006801:Humans; D008689:Methacrylates / Q000737:chemistry; D008875:Middle Aged; D011109:Polymethacrylic Acids / Q000737:chemistry; D012008:Recurrence; D013223:Statistics as Topic; D013499:Surface Properties; D014072:Tooth Abrasion / Q000628:therapy; D019237:Tooth Cervix / Q000473:pathology; D014077:Tooth Erosion / Q000628:therapy
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C428805:OptiBond SOLO; D011109:Polymethacrylic Acids; C103500:Prime & Bond; C099128:Prodigy; C420128:Spectrum composite resin; C113300:TPH hybrid; D017438:Bisphenol A-Glycidyl Methacrylate