Effect of liners and primers on tensile bond strength between zirconia and resin-based luting agent

Abstract

PURPOSEThe effect of silica-based glass-ceramic liners on the tensile bond strength between zirconia and resin-based luting agent was evaluated and compared with the effect of 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-containing primers.MATERIALS AND METHODSTitanium abutments and zirconia crowns (n = 60) were fabricated, and the adhesive surfaces of the specimens were treated by airborne-particle abrasion. The specimens were divided into 5 groups based on surface treatment: a control group, 2 primer groups (MP: Monobond Plus; ZP: Z Prime Plus), and 2 liner groups (PL: P-containing Liner; PFL: P-free Liner). All specimens were cemented with self-adhesive resin-based luting agent. After 24-hour water storage and thermocycling (5,000 cycles, 5℃/55℃), the tensile bond strength was measured using a universal testing machine. Failure mode analysis and elemental analysis on the bonding interface were performed. The data were analyzed using Kruskal-Wallis test, Dunn's post hoc test, and Fisher's exact test.RESULTSThe liner groups and primer groups showed significantly higher tensile bond strengths than that of the control group (P<.05). PFL showed a significantly higher tensile bond strength than the primer groups (P<.05). The percentage of mixed failure was higher in the primer groups than in the control group (P<.001), and all the specimens showed mixed failure in the liner groups (P<.001). A chemical reaction area was observed at the bonding interface between zirconia and liner.CONCLUSIONThe application of liner significantly increased the tensile bond strength between zirconia and resin-based luting agent. PFL was more effective than MDP-containing primers in improving the tensile bond strength with the resin-based luting agent.

Effect of Air-Abraded Versus Laser-Fused Fluorapatite Glass-Ceramics on Shear Bond Strength of Repair Materials to Zirconia

“…Unless sandblasting pressure is increased, silica coats embedded in zirconia surface have been found insufficient, as confirmed by energy dispersive spectroscopy (EDS), in one study [ 65 ]. However, higher pressures might induce damaging cracks into the zirconia surface which might question the durability of repair [ 66 ]. Monobond Plus was used in the current study as it contains silane and 10-MDP monomers.…”

“…10-MDP has two functional groups; phosphate group which binds to the hydroxyl group in zirconia and methacrylate group that copolymerises with the resin composite [ 1 ]. Monobond Plus has been used by many authors to study and investigate the bond strength of resin to composite [ 20 , 66 , 67 , 68 , 69 ].…”

Effects of MDP‑based primers on shear bond strength between resin cement and zirconia

“…Another advantage of this method is that it decreases surface tension, thereby augmenting the wettability of silane particles and improving adhesion. Following chair side airborne abrasion of the silane particles, application of primers containing 10-methacryloyloxydecyl dihydrogen phosphate (MDP) significantly enhances bonding and durability (9). MDP-based primers also function as adhesion promoters and are easy to use and apply, cost-efficient, and do not require specialized equipment for their application (10,11).…”

Effect of core design on fracture resistance of zirconia-lithium disilicate anterior bilayered crowns

“…Additionally, the reaction layer generated by ion migration, identified by EDS mapping, was believed to have offset the differences in mechanical properties between the two ceramics. 19 20 21 In this study, all specimens were fabricated using the same method as that used for clinical prosthesis fabrication to measure the fracture resistances. However, the differences in error were inevitable because of differences in the methods used to fabricate the infrastructure of the experimental group.…”

“…Moreover, studies on the bonding force between zirconia and LS2 have reported experimental comparisons of shear- and tensile-bond strengths according to liner treatments. 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 However, there is a paucity of studies on fracture resistance when crowns are used to fabricate a maxillary anterior prosthesis and when an intraoral load is applied by the antagonistic mandibular anterior teeth such as that observed during the anterior guidance process. 12 Additionally, with these bilayered ceramic crowns, the shape of the zirconia core must be changed according to the location of the zirconia-LS2 junction.…”