title: Bonding properties of heat-polymerized denture base resin to Ti-6Al-7Nb alloy.
abstract: The purpose of this study was to evaluate the shear bonding strength and leakage of heat-polymerized denture base resin to titanium-aluminum-niobium (Ti-6Al-7Nb) and cobalt-chromium (Co-Cr) castings using four adhesive systems; three adhesive primers (Metal Primer II, Metal Link, MR. Bond) and one heat-polymerized adhesive resin containing 4-META (Metadent). The resin tab was heat-polymerized directly with or without the primer. Shear bonding strengths and dye penetration distances were determined before and after 10,000 times of thermocycling. The results were analyzed with three-way ANOVA and Tukey's comparison (p<0.05). Thermocycling significantly decreased bonding strength and promoted dye penetration. However, with the application of adhesive systems, post-thermocycling bond strength was significantly improved and dye penetration was inhibited. The bonding strength of Ti-6Al-7Nb was significantly smaller than that of Co-Cr, but the difference was marginal. These results suggested that the examined adhesive systems significantly improved the bonding efficiency of heat-polymerized resin to Ti-6Al-7Nb and Co-Cr alloys.
authors.affiliation: Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University, Morioka, Japan. tesuzuki@iwate-med.ac.jp
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Suzuki
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Mansuang
authors.initials: M
authors.lastname: Arksornnukit
authors.forename: Nobusuke
authors.initials: N
authors.lastname: Oda
authors.forename: Shigezo
authors.initials: S
authors.lastname: Hirano
mesh_terms: D000180:Acrylic Resins; D002858:Chromium Alloys; D003035:Cobalt; D003722:Dental Alloys; D001840:Dental Bonding; D003763:Dental Leakage; D003799:Dental Stress Analysis; D003819:Denture Bases; D008422:Materials Testing; D019279:Resin Cements / Q000737:chemistry; D033081:Shear Strength; D014025:Titanium
chemical_list: D000180:Acrylic Resins; D002858:Chromium Alloys; D003722:Dental Alloys; D019279:Resin Cements; C070282:Ti-6Al-7Nb alloy; D003035:Cobalt; D014025:Titanium