Effect of thione primers on adhesive bonding between an indirect composite material and Ag-Pd-Cu-Au alloy

Abstract

The current study evaluated the effect of primers on the shear bond strength of an indirect composite material joined to a silverpalladium-copper-gold (Ag-Pd-Cu-Au) alloy (Castwell). Disk specimens were cast from the alloy and were air-abraded with alumina. Eight metal primers were applied to the alloy surface. A light-polymerized indirect composite material (Solidex) was bonded to the alloy. Shear bond strength was determined both before and after the application of thermocycling. Two groups primed with Metaltite (thione) and M. L. Primer (sulfide) showed the greatest post-thermocycling bond strength (8.8 and 6.5 MPa). The results of the X-ray photoelectron spectroscopic (XPS) analysis suggested that the thione monomer (MTU-6) in the Metaltite primer was strongly adsorbed onto the Ag-Pd-Cu-Au alloy surface even after repeated cleaning with acetone. The application of either the thione (MTU-6) or sulfide primer is effective for enhancing the bonding between a composite material and Ag-Pd-Cu-Au alloy.

Formation of chemical bonds on zirconia surfaces with acidic functional monomers

“…Therefore, bond strength evaluations alone are insufficient to reveal the effect of bonding agents on zirconia ceramics. Several techniques used in materials science and surface science to analyze the composition of solid surfaces can be used to determine the elemental composition, and studies using such techniques have been reported (11)(12)(13)(14). However, although many bond strength studies focused on bonding of zirconia ceramics have been performed under a variety of test and aging conditions, limited evidence is available on the chemical reaction between functional monomers and zirconia surfaces (15,16).…”

Trace of organic sulfur compounds detected from debonded interface between transparent acrylic resin and gold alloy

“…The acetone washing time was based on that described in a previous study, which found that VTD spectra depended on acetone washing time (10). For MTU-6, the effectiveness of acetone washing was confirmed in a previous study, which reported that MTU-6 was strongly adsorbed onto an Ag-Pd-Cu-Au alloy surface, even after repeated acetone cleaning (8). Suzuki et al used SERS spectroscopy to analyze the structure of VTD adsorbed to a colloidal gold surface (9).…”

“…The bonding characteristics of MTU-6 are better than those of VTD (3,8,14,15). However, few studies have examined the characteristics of MTU-6 bonding to dental metal alloys.…”

“…Mori and Nakamura (1) reported coating copper plates with the sulfur compound 6-(4-vinylbenzyl-n-propyl) amino-1,3,5-triazine-2,4-dithiol (VTD). A VTD acetone solution has since been used to prime dental noble metal alloys (Kojima et al, J J Dent Mater 6, 702-707, 1987), (2)(3)(4)(5)(6)(7)(8). Using infrared reflection absorption spectroscopy and surface-enhanced Raman scattering (SERS) spectroscopy, Suzuki et al studied the structure of VTD adsorption to noble metals (9,10).…”

Effect of sodium sulfite, carboxylic monomer, and phosphoric acid etching on bonding of tri-<i>n</i>-butylborane initiated resin to human enamel

“…TBB initiated methyl methacrylate (MMA) resins have been used for bonding enamel (1)(2)(3)(4), dentin (3,5), casting alloy (6)(7)(8), and ceramics (9)(10)(11) in combination with various etchants and primers.…”