Shear bond strength between an indirect composite veneering material and zirconia ceramics after thermocycling

Abstract

The present study evaluated the shear bond strength between an indirect composite material and zirconium dioxide (zirconia) ceramics after thermocycling. A total of 80 zirconia (Katana) discs were divided into five groups and primed with one of following agents: All Bond 2 Primer B (ABB), Alloy Primer (ALP), AZ Primer (AZP), Estenia Opaque Primer (EOP), and Porcelain Liner M Liquid A (PLA). An indirect composite material (Estenia C&B) was then bonded to the primed zirconia. One-half of the specimens (n = 8) in each group were stored in distilled water at 37 degrees C for 24 h, and the remaining eight specimens were thermocycled 5,000 times before shear bond strength testing. Mean bond strengths before thermocycling varied from 10.1 to 15.6 MPa; bond strengths after thermocycling ranged from 4.3 to 17.6 MPa. The ALP group had the highest strengths after thermocycling; there were no significant differences among the PLA, AZP, and EOP groups. The bond strength values for PLA, AZP, EOP, and ALP did not decrease with thermocycling. The application of an acidic functional monomer containing carboxylic anhydride (4-META), phosphonic acid (6-MHPA), or phosphate monomer (MDP) provided durable bond strength between Estenia C&B indirect composite and Katana zirconia.

Effect of surface treatment on bond strength between an indirect composite material and a zirconia framework

“…However, combined adhesive failure and cohesive failure within the indirect composite material was observed in six groups that underwent thermocycling. These findings are consistent with those of a study (18) which noted that polymerization of Estenia composite material was still progressing at 37°C for 24 h and that thermal stress at 55°C with 20,000 thermocycles resulted in additional polymerization of the composite material.…”

“…Two in vitro studies investigated short-term bond strength between an indirect composite used as veneering material and zirconia ceramics in zirconia-based restorations (17,18). Kobayashi et al (17) reported that application of priming agents containing MDP and an intermediate high-flow bonding agent resulted in superior bond strength between an indirect composite and zirconia ceramics.…”

“…Kobayashi et al (17) reported that application of priming agents containing MDP and an intermediate high-flow bonding agent resulted in superior bond strength between an indirect composite and zirconia ceramics. Komine et al (18) proposed that the use of an acidic functional monomer containing carboxylic anhydride (4-META), phosphonic acid (6-MHPA), or phosphate monomer (MDP) can yield durable bond strength between an indirect composite and zirconia ceramics.…”

In vitro comparison of fracture load of implant-supported, zirconia-based, porcelain- and composite-layered restorations after artificial aging

“…These conflicting findings may be attributable to the bond strength between zirconia ceramics and indirect composite material. A previous study demonstrated that thermal cycling did not decrease bond strength between zirconia and indirect composite material, due to the ongoing polymerization of composite material with thermal stress at 55°C 29) . However, SEM observation of the current study suggests that surface treatment with primers has a positive effect.…”

The effect of five kinds of surface treatment agents on the bond strength to various ceramics with thermocycle aging

“…Mechanical roughening with a coarse diamond bur 12) , air-abrasion using alumina particles 13) , and chemical etching with hydrofluoric acid 14) have been shown to provide micromechanical interlocking at the ceramic-resin interface. Moreover, it has been reported that the applications of silane coupling agent and acidic functional monomer could produce chemical bonding to silica-based and zirconia ceramic materials [15][16][17] . 3-methacryloxypropyl trimethoxysilane (γ-MPTS) is widely used in adhesive dentistry as a silane coupler 18) .…”