title: Clinical evaluation of a self-etching and a one-bottle adhesive system at two years.
abstract: OBJECTIVE
  The clinical performances of a self-etching adhesive system, Clearfil SE Bond, and a one-bottle adhesive system, Prime&Bond NT, were evaluated in non-carious Class V restorations for a period of two years.
  
  
  METHODS
  Ninety-eight restorations were made by one operator for 32 patients. The resin composite used to restore the teeth were Clearfil AP-X and Spectrum TPH for Clearfil SE Bond and Prime&Bond NT, respectively. Two clinicians at the baseline, 6th, 12th and 24th months evaluated the posterior composites according to the modified Ryge criteria's. For this, color match, marginal discoloration, marginal adaptation, recurrent caries, anatomic form, postoperative sensitivity and retention rates were considered. The changes across time and across groups were evaluated statistically.
  
  
  RESULTS
  At two years, 88 restorations were reviewed in 28 patients. The retention rates for Clearfil SE Bond were 93 and 91% for Prime&Bond NT. The percentages of the retention rates of both adhesive systems were not found to be different when calculating the failure rates. Recurrent caries, anatomic form and postoperative sensitivity were scored as Alpha for all restorations. Two cases of both adhesive systems showed slight marginal discoloration problems. Three restorations of Prime&Bond NT and one of Clearfil SE Bond had marginal adaptation problems at two years. One case for each adhesive system had slight color change after the same period.
  
  
  CONCLUSIONS
  We can conclude that both adhesive systems tested exhibited very good clinical performance at the end of two years.
authors.affiliation: Department of Restorative Dentistry and Endodontics, School of Dentistry, Ege University, Izmir 35100, Turkey. sebnemturkun@hotmail.com
authors.forename: Sebnem L
authors.initials: SL
authors.lastname: Türkün
mesh_terms: D000328:Adult; D003116:Color; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003731:Dental Caries / Q000145:classification; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000145:classification; D003807:Dentin Sensitivity / Q000145:classification; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008689:Methacrylates / Q000737:chemistry; D008875:Middle Aged; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D013499:Surface Properties
chemical_list: C112828:Clearfil AP-X; C438313:Clearfil SE Bond; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; C467914:TPH spectrum