A study of self-adhesive resin cements for bonding to silver-palladium-copper-gold alloy — Effect of including primer components in cement base

Abstract

This study investigated the efficacies of adhesive resin cements (Clearfil SA Luting, Maxcem, G-CEM, RelyX Unicem Clicker, Vitremer Paste) for bonding to Ag-Pd-Cu-Au alloy not surface-pretreated with metal primer. For control, Panavia F 2.0 -developed for use with a proprietary metal primer, Alloy Primer-was tested with and without metal primer application. Pairs of alloy disks (10.0 and 8.0 mm in diameters, 3.0 mm thickness) were air-abraded with alumina and bonded with one of the cements. Shear bond strengths (SBSs) were measured before and after 50,000 times of thermocycling. Among Maxcem, RelyX Unicem Clicker and the control, there were no statistical differences in SBS before and after thermocycling. After thermocycling, Clearfil SA Luting exhibited the highest SBS among all the cements. Results showed that Clearfil SA Luting, Maxcem, and RelyX Unicem Clicker were efficacious for bonding to Ag-Pd-Cu-Au alloy after air abrasion surface treatment for the latter.

Evaluation of the effects of three pretreatment conditioners and a surface preparation system on the bonding durability of composite resin adhesive to a gold alloy

“…The 10-methacryloxydecyl 6,8-dithiooctanoate (MDDT) monomer in the MLP and the disulfide-methacrylate in the MBP have cyclic disulfide groups, whereas the 6-(4-vinylbenzyl-n-propyl) amino 1,3,5-triazine-2,4-dithiol, dithione tautomer (VTD) in the ALP conditioner has thione groups on the terminal monomer structure. The effectiveness of the sulfur-based functional monomers for the bonding of noble metals has been reported 12,13,21,27) . Shear testing of the noble alloy bonded using the MBP conditioner with different composite luting materials showed a bonding strength of 16.5 MPa after thermocycling (37,500 cycles), similar to the bonding strength achieved using the ALP conditioner 20) .…”

“…There have also been several improvements in the chemical compositions of monomers and initiators to enhance their clinical performance 25,26) . Although adhesive resin luting agents and resinmetal bonding systems have evolved, little information about their effects on adhesion to noble alloys used for prostheses is available 27,28) . The purpose of the study was to evaluate the effects of surface treatments on bonding between a gold alloy and composite adhesive luting agents.…”

In Vitro Bonding Performance of Modern Self-Adhesive Resin Cements and Conventional Resin-Modified Glass Ionomer Cements to Prosthetic Substrates

“…Conversely, the two glass ionomer cements tested in the current study showed comparable results and these fractured during bond strength test prevalently in adhesive mode, both at 24 h and after TC ageing; no significant difference between GC-GIC and PAN was observed after thermocycling. Conventional GIC cements are characterised by a week tensile strength, fracture resistance and by the absence of chemical bond with noble metal in alloys [81,82]. Conversely, the mechanical properties of resin-modified glass ionomer cements (RMGIC) are generally greater than those of a conventional GIC; the compressive strength of the RMGIC at 24 h after setting is lower than that observed in conventional resin-free GIC [83].…”

Efekti jedinjenja paladijuma na kontraktilnost, koronarni protok i vijabilnost izolovanog srca pacova

“…Примена паладијума у индустрији почела је 1919. године, при чему је паладијум до данас коришћен за производњу електричних контаката, 3,4 хемијских катализатора, 5 накита и сатова, 6,7 стоматолошких протеза, уметака и круница зуба, 8,9 хируршких инструмената и тест трака за одређивање шећера у крви. 10 У аутомобилској индустрији као каталитички конвертор користи се за смањење емисије штетних полутана као што су угљен моноксид, угљен водоник и оксиди азота, претварајући их у угљен диоксид, воду и азот.…”