title: Self-etching primer and resin-based restorative material: two-year clinical evaluation.
abstract: OBJECTIVE
  This study was undertaken to evaluate the performance of posterior restorations placed using a self-etching primer (Fluorobond, Shofu Inc., Kyoto, Japan) and a universal resin-based restorative material (Beautifil, Shofu Inc., Kyoto, Japan).
  
  
  METHODS
  The 61 restorations evaluated were 26 Class I and 35 Class II that were placed by two clinicians in 31 patients. Two other calibrated clinicians evaluated the restorations using United States Public Health Service (USPHS)/Ryge criteria observing the following characteristics: color match, marginal adaptation, anatomy, roughness, marginal staining, interfacial staining, contact, secondary caries, and luster. Restorations were placed under rubber dam isolation. Chi-squared and Fisher's exact tests were used for statistical analysis (p = .05).
  
  
  RESULTS
  All the restorations were assessed at baseline and alfa scores predominated for all criteria. At the 12-month recall examination, one patient dropped out of the study and two restorations were replaced by a clinician not involved in the project. At 24-month recall, 58 restorations were examined (23 Class I and 35 Class II). From baseline to 24 months, 19 of the 44 restorations changed from alfa to bravo and 13 from bravo to alfa for a variety of reasons. No significant differences were found for any of the clinical criteria (p > .05). The 2-year recall substantiated the 1-year results.
  
  
  CONCLUSIONS
  Beautifil and the self-etching primer Fluorobond provided satisfactory restorations after a 2-year observation period.
  
  
  CONCLUSIONS
  Beautifil restorative material and Fluorobond bonding system provided satisfactory results when placed in Class I and Class II preparations for a period of 2 years.
authors.affiliation: University of Florida, College of Dentistry, Department of Operative Dentistry, Gainesville 32610-0415, USA. vgordan@dental.ufl.edu
authors.forename: Valeria V
authors.initials: VV
authors.lastname: Gordan
authors.forename: Ivar A
authors.initials: IA
authors.lastname: Mjör
authors.forename: Oscar
authors.initials: O
authors.lastname: Vazquez
authors.forename: Ronald E
authors.initials: RE
authors.lastname: Watson
authors.forename: Nairn
authors.initials: N
authors.lastname: Wilson
mesh_terms: D000134:Acid Etching, Dental; D000328:Adult; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D016009:Chi-Square Distribution; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D003731:Dental Caries / Q000209:etiology; D003737:Dental Cavity Preparation / Q000145:classification; D003738:Dental Cements / Q000737:chemistry*; D018772:Dental Marginal Adaptation; D003775:Dental Polishing; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods*; D005460:Fluorides, Topical / Q000737:chemistry*; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D011092:Polyethylene Glycols / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry*; D012008:Recurrence; D016733:Rubber Dams; D013223:Statistics as Topic; D013499:Surface Properties
chemical_list: C470433:Beautifil composite resin; D003188:Composite Resins; D003738:Dental Cements; D005460:Fluorides, Topical; C072652:FluoroBond; D011109:Polymethacrylic Acids; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate