Long-term microtensile bond strength of surface modified zirconia

Effect of aging type and aged unit on the repair strength of resin composite to feldspathic porcelain in testing microtensile bond strength

“…This could be explained on the grounds that thermocycling especially exposure to 55°C bath, probably further contributed to polymerization of the bonded joint. In another study, testing the bond strength between zirconia and resin cement where porcelain-resin cement was considered as the control group [19], also reported increased bond strength after sticks were stored in water for 1 and 3 months. However, after 6 months the results were similar to the non-aged group.…”

“…However, the effectiveness of the aging procedure depends on some factors, such as materials bonded ceramic-composite, ceramic-cement, reinforced ceramic-resin composite, reinforced ceramic-cement, ceramic-resin cement-dentin assemblies [5,8,19] or surface conditioning methods (i.e. etching, air-borne particle abrasion) [6,19]. In addition to these factors, bonding test type (tensile, microtensile, shear, microshear) [20] and tests design (i.e.…”

“…Both aging methods are expected to reduce the bond strength of the system [4,5]. However, the effectiveness of the aging procedure depends on some factors, such as materials bonded ceramic-composite, ceramic-cement, reinforced ceramic-resin composite, reinforced ceramic-cement, ceramic-resin cement-dentin assemblies [5,8,19] or surface conditioning methods (i.e. etching, air-borne particle abrasion) [6,19].…”

“…The aging process prior to the µTBS test can be performed either by exposing the bonded block (block aging) [5,7] or the sticks obtained from the bonded block (stick aging) to the aging media [9,18,19]. However, to date the literature lacks studies comparing the effectiveness of the aging methods in these two experimental situations.…”

Bonding of Resin Materials to All-Ceramics: A Review

“…However, Zirconia ceramics are densely sintered mechanically tough materials, which might be difficult to be coated by silica. Research studies showed that the tribochemical silicacoating/silanation had the same or similar effects as regular air-abrasion with alumina particles on improving zirconia-resin bond strengths, indicating tribochemical silica-coating provided only air-abrasion effect for creating surface roughness (Akyil et al, 2010;Re et al, 2008;Tanaka et al, 2008;Smith et al, 2011). It was reported that tribochemical silica-coating didn't provide stable resin-Zirconia bond strength (Kern and Wegner, 1998).…”