Combination treatment of tribochemical treatment and phosphoric acid ester monomer of zirconia ceramics enhances the bonding durability of resin-based luting cements

Abstract

The aim of the present study was to evaluate the bonding durability of resin-based luting cement to partially stabilized tetragonal zirconia (Y-TZP) achieved by combination treatment of tribochemical (TBC) treatment and two different phosphate acid ester monomers. Two phosphate acid ester monomers (EP: Epricord opaque primer, AZ: AZ primer) were applied to each surface modification followed by application of resin-based luting cement (Rely-X ARC). Bonding specimens were placed in deionized water at 37°C and stored for 24 h. The other groups were subjected to 30,000 cycles of a thermal stress for the durability test. Shear bond tests were done using a universal testing machine at 1 mm/min. Shear bond strengths of combination treatments using EP and AZ on TBC treatment after thermal stress showed no significant difference (p>0.05) compared with those of storage after 24 h. Combination treatment using phosphoric acid ester monomer could achieve a durable bond.

Novel fabrication method for zirconia restorations: Bonding strength of machinable ceramic to zirconia with resin cements

“…We have previously reported that with an optimal combination of primer conditioning and surface modification treatments, a maximum bond strength of 49.4 MPa was achieved between zirconia and resin cement 20) . In another study, we reported that the bond strength of resin cement to CAD/CAM ceramic was improved by a combined application of tribochemical system and metal primer on the bonding surface 21) .…”

“…In light of the favorable results obtained in our previous studies 20,21) , we decided to challenge the conventional porcelain layering technique. A novel fabrication method based on the tested adhesion technique 21) was proposed for all-ceramic restorations, whereby CAD/CAM fabricated veneering ceramics would be bonded to zirconia frameworks using resin cements.…”

“…In a previous study, we reported that a maximum bonding strength of 49.4 MPa was achieved between resin cement and zirconia through a combined application of primer and surface treatments 20) . In another study 21) , a "combination treatment" -which entailed tribochemical surface modification treatment followed by a combined application of silane coupling agent and a functional monomer as primer-markedly improved the bond strength between a CAD/CAM-fabricated, leucitereinforced feldspathic glass ceramic and resin cement.…”

“…On the adhesion of resin cements to zirconia, it has seen significant improvements through the use of primers and surface modification treatments developed specifically for zirconia-resin bonding [15][16][17][18][19][20] . In a previous study, we reported that a maximum bonding strength of 49.4 MPa was achieved between resin cement and zirconia through a combined application of primer and surface treatments 20) .…”

Enhancement of the Bonding Durability of Resin-based Cement to Lithium Disilicate Glass Ceramics Using Surface Modification Methods

“…Different surface treatments, involving primers and silane coupling agents, are available and reported to enhance the bonding strength of resin cement to porcelain and zirconia [10][11][12][13] . These surface modi cation methods include acid etching, sandblasting, tribochemical treatment, and the application of phosphoric acid monomer [14][15][16][17] . In particular, acid etching using hydro uoric acid solution has been recommended to enhance the surface bonding characteristics of LDCs 18 19 .…”