title: Adhesive bonding of super-elastic titanium-nickel alloy castings with a phosphate metal conditioner and an acrylic adhesive.
abstract: The purpose of the current study was to evaluate the bonding characteristics of super-elastic titanium-nickel (Ti-Ni) alloy castings. Disk specimens were cast from a Ti-Ni alloy (Ti-50.85Ni mol%) using an arc centrifugal casting machine. High-purity titanium and nickel specimens were also prepared as experimental references. The specimens were air-abraded with alumina, and bonded with an adhesive resin (Super-Bond C & B). A metal conditioner containing a phosphate monomer (Cesead II Opaque Primer) was also used for priming the specimens. Post-thermocycling average bond strengths (MPa) of the primed groups were 41.5 for Ti-Ni, 30.4 for Ti and 19.5 for Ni, whereas those of the unprimed groups were 21.6 for Ti, 19.3 for Ti-Ni and 9.3 for Ni. Application of the phosphate conditioner elevated the bond strengths of all alloy/metals (P < 0.05). X-ray fluorescence analysis revealed that nickel was attached to the debonded resin surface of the resin-to-nickel bonded specimen, indicating that corrosion of high-purity nickel occurred at the resin-nickel interface. Durable bonding to super-elastic Ti-Ni alloy castings can be achieved with a combination of a phosphate metal conditioner and a tri-n-butylborane-initiated adhesive resin.
authors.affiliation: Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, Japan. hmatsu@net.nagasaki-u.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Matsumura
authors.forename: N
authors.initials: N
authors.lastname: Tanoue
authors.forename: H
authors.initials: H
authors.lastname: Yanagida
authors.forename: M
authors.initials: M
authors.lastname: Atsuta
authors.forename: M
authors.initials: M
authors.lastname: Koike
authors.forename: T
authors.initials: T
authors.lastname: Yoneyama
mesh_terms: D000269:Adhesives; D000704:Analysis of Variance; D001840:Dental Bonding; D003735:Dental Casting Technique / Q000295:instrumentation*; D003738:Dental Cements / Q000737:chemistry*; D003764:Dental Materials; D006801:Humans; D008422:Materials Testing / Q000379:methods; D009532:Nickel / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D000269:Adhesives; D003738:Dental Cements; D003764:Dental Materials; D010710:Phosphates; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium