title: Effect of surface preparation on microtensile bond strength of three adhesive systems to bovine enamel.
abstract: OBJECTIVE
  The purpose of this study was to compare the microtensile bond strength (microTBS) of three adhesives to bovine enamel prepared with 600-grit silicon carbide paper, diamond rotary instrument, or carbide bur.
  
  
  METHODS
  Bovine teeth (n = 36) were randomly divided into three treatment groups and bonded using a total-etch adhesive (Single Bond, 3M ESPE), a self-etching primer system (Clearfil SE Bond, Kuraray), or a self-etching adhesive (One-Up Bond F, Tokuyama). A 4-mm composite crown was built on the bonded surfaces and specimens were stored in water for one day at 37 degrees C. Specimens were sectioned into 0.7-mm-thick slabs, trimmed to a cross-sectional area of 1 mm2, and loaded to failure at a crosshead speed of 1 mm/min using a tabletop tester (EZ-Test, Shimadzu). Microtensile bond strength data were analyzed using ANOVA and Fisher's PLSD test (alpha = 0.05).
  
  
  RESULTS
  The bond strength of each self-etching system was lower when the enamel was prepared using a diamond or carbide bur, rather than with 600-grit silicon carbide paper. Differences in microTBS between carbide- and diamond-prepared surfaces were not significant. The surface preparation method did not affect the total-etch system.
  
  
  CONCLUSIONS
  Different preparation instruments are unlikely to affect resin-enamel bond strengths.
authors.affiliation: Department of Operative Dentistry, School of Dentistry, University of North Carolina, Chapel Hill, North Carolina 27599-7450, USA.
authors.forename: Walter R L
authors.initials: WR
authors.lastname: Dias
authors.forename: Patricia N R
authors.initials: PN
authors.lastname: Pereira
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Swift
mesh_terms: D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D002417:Cattle; D003737:Dental Cavity Preparation / Q000295:instrumentation*; D003743:Dental Enamel / Q000737:chemistry*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods; D008689:Methacrylates / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry*; D013499:Surface Properties; D013718:Tensile Strength
chemical_list: C438313:Clearfil SE Bond; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C446260:One-Up-Bond F; D019279:Resin Cements; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate