Tensile bond strength of composite luting cements to metal alloys after various surface treatments.
OBJECTIVE
To evaluate the effects of two different surface treatments and bonding agents on tensile bond strength between a Co-Cr and a Ni-Cr cast alloy and two resin-luting cements.


METHODS
Two hundred and forty alloy samples were cast and subjected to surface treatments such as sandblasting, chemical etching, and sandblasting plus chemical etching. Panavia F and CandB cement were used as cementing mediums. The etching qualities were examined by a stereooptic microscope. Failure surfaces were examined throughout scanning electron microscopy. The data were evaluated using statistical methods, namely analysis of variance and multiple comparison test (Tukey HSD).


RESULTS
Significant differences were found in the bonding provided by the various cements (P < 0.001) and also type of surface treatments (P < 0.001). For all groups, sandblasted surfaces showed the highest bond strength values. There was no significant difference between the Cr-Co and the Cr-Ni alloys (P > 0.05).


CONCLUSIONS
Panavia F showed higher tensile strength and the sandblasted samples possessed higher tensile strength.
Denizoğlu
Saip
S
Department of Prosthodontics, Yeditepe University, Istanbul, Turkey. spdeniz@yahoo.com
Hanyaloğlu
Cem S
CS
Aksakal
Bünyamin
B
D000134:Acid Etching, Dental / Q000379:methods; D000268:Adhesiveness; D000537:Aluminum Oxide / Q000737:chemistry; D001896:Boron Compounds / Q000737:chemistry; D002858:Chromium Alloys / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry*; D001840:Dental Bonding; D045662:Dental Etching / Q000379:methods*; D003775:Dental Polishing / Q000295:instrumentation / Q000379:methods; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D009532:Nickel / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013718:Tensile Strength; D013997:Time Factors; D014867:Water / Q000737:chemistry
D001896:Boron Compounds; D002858:Chromium Alloys; D003188:Composite Resins; D003722:Dental Alloys; D008689:Methacrylates; D008768:Methylmethacrylates; C438843:Panavia-Fluoro; D019279:Resin Cements; C472721:Wironit; D014867:Water; C100646:Metal Primer; D003035:Cobalt; D009532:Nickel; C049495:Super-bond; D000537:Aluminum Oxide