Adhesive bonding of titanium with a thione‐phosphate dual functional primer and self‐curing luting agents

Abstract

A consistent bond between the metal framework and the luting agent is desired when resin-bonded prostheses are constructed with titanium. The purpose of this study was to evaluate three different metal primers on titanium bonding. Two sources of titanium (machined 99.9% titanium and cast Titan Ingot JS2) were used. Disk specimens were bonded with eight combinations of three primers and two luting agents (Panavia 21 and Super-Bond C&B), including two controls. Shear bond strengths were determined after 24-h water storage and after 10,000 cycles of thermocycling. Bond strengths were influenced by thermocycling, primer, luting agent and their combinations, but no significant differences were found between the machined 99.9% titanium and the cast ingot. The thione-phosphate dual functional primer (Alloy Primer) was comparable to the phosphate primer (Cesead II Opaque Primer) and the thiophosphate primer (Metal Primer II) for bonding the titanium metals examined. The most durable bond was obtained in three combinations of these primers and one luting agent (Super-Bond C&B).

Effects of sandblasting, H2SO4/HCl etching, and phosphate primer application on bond strength of veneering resin composite to commercially pure titanium grade 4

“…These findings agreed with previous studies which reported that an MDP-containing primer improved the adhesive bonding between titanium and resins 15,16) . It was suggested that the phosphoric acid group of MDP monomer was effective in improving the adhesion of resins to titanium 20) .…”

“…To improve the adhesive bonding of resins to titanium, several physical and chemical surface modification techniques were investigated: sandblasting 10) , silica coating [11][12][13] , application of adhesive primers [14][15][16][17][18][19][20][21] , plasma irradiation 22) , alkaline treatment 23,24) , and acid etching 25,26) . On the use of adhesive monomers in primers, the authors previously reported that a primer containing 10-methacryloyloxydecyl dihydrogen phosphate (MDP) monomer promoted resin bonding to titanium 14) .…”

Effect of sandblasting and various metal primers on the shear bond strength of resin cement to Y-TZP ceramic

“…This commercially available dual function primer was said to be effective for both noble and base metal alloys [38,39]. In current study, MDP-containing metal primer showed higher bond strength than other sulfur-containing metal primers when it was used on the untreated zirconia ceramics.…”

“…Other previous studies have already shown that a durable resin bond strength to Y-TZP ceramics is achieved only after air abrasion and using resin composite cements containing a special MDP monomer [6,28,39,[40][41][42][43]. This is because the MDP monomer bonds directly to metal oxides [27,38].…”

Effects of Primers Containing Thiouracil and Phosphate Monomers on Bonding of Resin to Ag-Pd-Au Alloy

“…One primer (Alloy Primer, Kuraray Medical Co. Ltd., Tokyo, Japan) 27) contained VBATDT and 10-methacryloxydecyl dihydrogen phosphate (MDP), and another primer (Metal Link, Shofu Inc., Kyoto, Japan) contained 10-MDDT and 6-methacryloxyhexyl phosphonoacetate (6-MHPA) 28) . Although these dual-function primers were effective for both noble and base metal alloys [29][30][31] , limited information is available regarding primers with other combinations of sulfur-containing monomers and phosphate monomers 32) . The purpose of the present study, therefore, was to investigate the effects of modifying a thiouracil primer with phosphate monomers on bond strength between a self-curing luting resin and Ag-Pd-Au alloy and on the bonding durability of these primers against thermocycling stress.…”