title: Microleakage of Class V resin composite restorations placed with self-etching adhesives.
abstract: BACKGROUND
  Although they are widely available, there is insufficient information about the capability of self-etching adhesives in sealing the margins of resin composite restorations.
  
  
  OBJECTIVE
  The purpose of this study was to compare the in vitro microleakage of Class V resin composite restorations placed using a strong pH self-etching adhesive, an intermediate pH self-etching adhesive, and an adhesive with a separate etchant and primer.
  
  
  METHODS
  Class V resin composite restorations (n = 8) were placed in prepared cavities in extracted human third molars using 2 self-etching dentin adhesives, Prompt L-Pop (Strong pH) or One-Up Bond F (Intermediate pH), and an adhesive with a separate etchant and primer, ScotchBond Multi-Purpose. The restored teeth received 1000 thermal cycles between 5 degrees C and 55 degrees C water baths with a 1-minute dwell time and were subsequently subjected to a methylene blue dye challenge and sectioned. The sectioned specimens were scored as demonstrating none, slight, or severe leakage (n=16). Ranked data were analyzed using a 1-way analysis of variance at a 5% confidence level.
  
  
  RESULTS
  The only leakage observed was along gingival margins, with an incidence of 31% for Prompt L-Pop and One-Up Bond F, and 50% for ScotchBond Multi-Purpose.
  
  
  CONCLUSIONS
  No significant differences in marginal leakage were found among the adhesives tested.
authors.affiliation: Department of Oral Rehabilitation, School of Dentistry, Medical College of Georgia, Augusta 30912-1260, USA. wbrackett@mail.mcg.edu
authors.forename: William W
authors.initials: WW
authors.lastname: Brackett
authors.forename: Larry D
authors.initials: LD
authors.lastname: Haisch
authors.forename: Megan G
authors.initials: MG
authors.lastname: Pearce
authors.forename: Martha G
authors.initials: MG
authors.lastname: Brackett
mesh_terms: D000134:Acid Etching, Dental; D000704:Analysis of Variance; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry*; D016001:Confidence Intervals; D003743:Dental Enamel / Q000473:pathology; D003763:Dental Leakage / Q000145:classification*; D003793:Dental Restoration, Permanent / Q000145:classification*; D017220:Dentin-Bonding Agents / Q000737:chemistry* / Q000145:classification; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008751:Methylene Blue; D019279:Resin Cements / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C446260:One-Up-Bond F; C408584:Prompt L-Pop; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; D014867:Water; D008751:Methylene Blue