title: Effect of refrigeration on shear bond strength of three dentin bonding systems.
abstract: OBJECTIVE
  To determine whether use of dentin bonding agents directly from refrigerated storage would have adverse effects on their shear bond strength to dentin.
  
  
  METHODS
  Resin-based composite cylinders were bonded to dentin on the ground occlusal surfaces of 60 extracted human molars using three different dentin bonding systems at 3.0 degrees C and 23.5 degrees C. The cylinders were then debonded using an Instron testing machine in compression mode at 0.5 mm/sec. The results were interpreted with t-test and Student-Newman-Keuls post hoc analysis.
  
  
  RESULTS
  Scotchbond Multi-Purpose demonstrated significantly lower shear bond strengths at 23.5 degrees C (P < 0.05) than all other groups at both 3.0 degrees C and 23.5 degrees C. All-Bond 2 and Prime & Bond had higher shear bond strengths at refrigerated temperature, but the differences were insignificant in magnitude.
authors.affiliation: Department of Operative Dentistry, University of the Pacific School of Dentistry, San Francisco, USA.
authors.forename: M S
authors.initials: MS
authors.lastname: Hagge
authors.forename: J S
authors.initials: JS
authors.lastname: Lindemuth
authors.forename: J C
authors.initials: JC
authors.lastname: Broome
authors.forename: M J
authors.initials: MJ
authors.lastname: Fox
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate; D019245:Compressive Strength; D001840:Dental Bonding; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D008963:Molar; D011109:Polymethacrylic Acids; D011897:Random Allocation; D012034:Refrigeration; D019279:Resin Cements; D013718:Tensile Strength
chemical_list: D017220:Dentin-Bonding Agents; D008689:Methacrylates; D011109:Polymethacrylic Acids; C103500:Prime & Bond; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; C100742:All-Bond 2; D017438:Bisphenol A-Glycidyl Methacrylate