title: Application of etch-and-rinse adhesives on dry and rewet dentin under rubbing action: a 24-month clinical evaluation.
abstract: BACKGROUND
  Researchers conducting laboratory investigations have reported that bonding to dry demineralized dentin can be feasible technically as long as the adhesives are rubbed vigorously onto the dentin surface. The authors aimed to evaluate the 24-month clinical performance of resin-based composites in noncarious cervical lesions (NCCLs) in teeth restored with two etch-and-rinse adhesives that had been applied with a vigorous rubbing action to both dry and rewet dentin.
  
  
  METHODS
  The authors enrolled 40 patients in this study. They inserted 160 restorations and evaluated them at baseline and at six, 12 and 24 months of service. They divided the restorations into four groups: One-Step (OS) Universal Dental Adhesive System (Bisco, Schaumburg, Ill.) (acetone-based adhesive) with rewet dentin; OS with dry dentin; Adper Single Bond (SB) Plus Adhesive (3M ESPE, St. Paul, Minn.) (ethanol/water-based adhesive) with rewet dentin; and SB with dry dentin. The authors used the same resin-based composite for all restorations. They evaluated the restorations according to modified U.S. Public Health Service criteria.
  
  
  RESULTS
  The 24-month retention rates for the rewet and dry conditions, respectively, were 95.0 percent and 97.5 percent for SB and 97.5 percent and 91.9 percent for OS. The authors detected no significant difference between rewet and dry groups for either adhesive (P > .05). In terms of marginal discoloration, OS performed significantly worse than did SB, irrespective of dentin moisture (P > .05).
  
  
  CONCLUSIONS
  Dentin moisture seems not to be important for the retention of etch-and-rinse adhesives as long as the adhesives have been rubbed vigorously onto the dentin surface. The ethanol/water-based adhesive showed a better overall performance than did the acetone-based system.
authors: School of Dentistry, Department of Restorative Dentistry, Universidade Estadual de Ponta Grossa, Paraná, Brazil.
authors: Christiana
authors: C
authors: Zander-Grande
authors: Sabrina Queji
authors: SQ
authors: Ferreira
authors: Thays Regina Ferreira
authors: TR
authors: da Costa
authors: Alessandro Dourado
authors: AD
authors: Loguercio
authors: Alessandra
authors: A
authors: Reis
mesh_terms: D000096:Acetone / Q000737:chemistry; D000134:Acid Etching, Dental / Q000379:methods*; D000328:Adult; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003731:Dental Caries / Q000209:etiology; D018772:Dental Marginal Adaptation; D003764:Dental Materials / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000379:methods; D003804:Dentin / Q000648:ultrastructure*; D003807:Dentin Sensitivity / Q000209:etiology; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008875:Middle Aged; D012997:Solvents / Q000737:chemistry; D013499:Surface Properties; D019237:Tooth Cervix / Q000473:pathology; D014076:Tooth Diseases / Q000628:therapy; D055815:Young Adult
chemical_list: C103506:Bis-GMA, BPDM, HEMA dental-bonding resin; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; C444701:Filtek Z250; D008689:Methacrylates; C511238:Single Bond Plus; D012997:Solvents; D000096:Acetone; D000431:Ethanol; D017438:Bisphenol A-Glycidyl Methacrylate