title: Influence of cementation variables on fatigue of simulated two-unit cantilever resin-bonded fixed partial dentures.
abstract: OBJECTIVE
  To determine the influence of various combinations of surface pretreatment and luting cement on flexural fatigue limits of two-unit CoCr cantilever resin-bonded fixed partial dentures.
  
  
  METHODS
  Cyclic fatigue tests were performed at 1 Hz on an ACTA fatigue tester. The staircase test method was used on CoCr beams, simulating cantilever resin-bonded fixed partial dentures, using flat ground bovine teeth as substrate. Two series of tests have been executed: (1) 10(4) cycles, and (2) 10(5) cycles. Prior to cementation, the CoCr beams were subjected to either sandblasting or Rocatec or Silicoater treatments. Three commercially available resin luting cements were used. Fatigue tests were performed 72 hours after cementation and storage in 37 degrees C tap water. Each possible combination of cement and pretreatment (n = 20) was tested.
  
  
  RESULTS
  One cement, UniFix, showed hardly any debondings with any of the three surface pretreatments. The other two cements, RelyX ARC and Panavia, both showed significantly better performance with Rocatec than when pretreated with sandblasting or Silicoater.
authors.affiliation: Department of Dental Materials Science, Academic Centre for Dentistry, Amsterdam, The Netherlands. a.dalen@acta.nl
authors.forename: Andy
authors.initials: A
authors.lastname: van Dalen
authors.forename: Albert J
authors.initials: AJ
authors.lastname: Feilzer
authors.forename: Cornelis J
authors.initials: CJ
authors.lastname: Kleverlaan
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D001896:Boron Compounds / Q000737:chemistry; D002417:Cattle; D002484:Cementation / Q000379:methods*; D002858:Chromium Alloys / Q000737:chemistry; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D045662:Dental Etching / Q000379:methods; D019232:Dental Restoration Failure; D003779:Denture Design; D016379:Denture, Partial, Fixed, Resin-Bonded; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D018583:Pliability; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D001896:Boron Compounds; D002858:Chromium Alloys; D003738:Dental Cements; D008689:Methacrylates; D008768:Methylmethacrylates; C438843:Panavia-Fluoro; D011109:Polymethacrylic Acids; C462240:RelyX ARC; D019279:Resin Cements; C076811:Rocatec; D012821:Silanes; D014867:Water; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; C049495:Super-bond; D000537:Aluminum Oxide