title: Adhesive bonding of noble metal alloys with a triazine dithiol derivative primer and an adhesive resin.
abstract: The purpose of this study was to evaluate the bond strength and durability of a metal adhesive system bonded to noble metal alloys. Disc specimens were cast from type IV gold (type IV, Casting Gold M. C., metal-ceramic gold (Au-Pt-Pd, Degudent Universal, metal-ceramic palladium (Pd-Ga-Co, PTM 88 silver-indium (Ag-In-Zn, Salivan Hard and silver-palladium-copper-gold (Ag-Pd-Cu, S12) alloys and pure silver (pure Ag). The specimens were air-abraded with 50 micron alumina, conditioned with a thiol-based primer designed for noble alloys (V-Primer), and then bonded with an adhesive resin (Super-Bond Opaque Ivory). Shear bond strengths were determined after repeated thermocycling (4-60 degrees C, 1 min each, 100 000 cycles). The average bond strengths in MPa (n=8) were 30.9 for the type IV alloy, 29.0 for the Ag-Pd-Cu alloy, 28.0 for the Au-Pt-Pd alloy, 26.3 for the pure Ag, 26.0 for the Pd-Ga-Co alloy and 9.3 for the Ag-In-Zn alloy. The Ag-In-Zn alloy exhibited significantly lower bond strength than the other alloys, whereas the bond strengths of the other four alloys and pure Ag were comparable (P<0.05). It is concluded that the combined use of the thiol derivative primer and the adhesive resin is effective for bonding the noble metal alloys examined, with the exception of the Ag-In-Zn alloy.
authors.affiliation: Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, Nagasaki, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Matsumura
authors.forename: Y
authors.initials: Y
authors.lastname: Taira
authors.forename: M
authors.initials: M
authors.lastname: Atsuta
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D001896:Boron Compounds / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry*; D001840:Dental Bonding; D005069:Evaluation Studies as Topic; D006047:Gold Alloys / Q000737:chemistry; D007204:Indium / Q000737:chemistry; D008422:Materials Testing; D016876:Metal Ceramic Alloys / Q000737:chemistry; D008689:Methacrylates / Q000737:chemistry*; D008768:Methylmethacrylates / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry; D010984:Platinum / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D013816:Thermodynamics; D014227:Triazines / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry
chemical_list: D000269:Adhesives; D001896:Boron Compounds; D003722:Dental Alloys; D006047:Gold Alloys; D016876:Metal Ceramic Alloys; D008689:Methacrylates; D008768:Methylmethacrylates; D019279:Resin Cements; D013501:Surface-Active Agents; D014227:Triazines; C107059:V-Primer; D007204:Indium; D012834:Silver; D010984:Platinum; D010165:Palladium; D003300:Copper; C076160:6-(4-vinylbenzyl-n-propyl)amino-1,3,5-triazine-2,4-dithiol; C049495:Super-bond; D015032:Zinc