Can universal adhesive systems bond to zirconia?

Abstract

Objective To measure the bond strength to zirconia subjected to different surface treatments of universal bonding agents. Materials and methods Eighty blocks of zirconia were obtained by CAD/CAM milling. The blocks were embedded into PVC tubes, polished sequentially with increasing granulation sandpapers and divided into two groups according to surface treatment: polished or grit‐blasted with alumina particles. Each group was then subdivided by bonding agent employed: Z‐Prime Plus (control); Scotchbond Universal; All Bond Universal; and Z‐Prime Plus + All Bond Universal. Cylindrical composite resin build‐ups were constructed atop the blocks using a two‐part metal die. Specimens were stored for 24 hours and subjected to microshear bond strength testing. Statistical analyses were performed by means of the F‐test (ANOVA), Student's t and Tukey's test. After sputter coating, zirconia surfaces and adhesive interfaces were analyzed by scanning electron microscopy (SEM). Results Bond strength was superior for grit‐blasted zirconia. In specimens with this surface treatment, there were no significant differences between experimental groups. On SEM, blasted surfaces exhibited areas of micromechanical retention and adhesive interfaces exhibited areas of zirconia‐adhesive interlocking. Conclusion Universal adhesive systems were able to bond to zirconia. The interlocking promoted by grit‐blasting enhanced bond strength. Clinical significance Universal adhesive systems simplify bonding to zirconia and enable intraoral repair of fractures.

Comparative evaluation of effect of One Coat 7 Universal and Tetric N-Bond Universal adhesives on shear bond strength at resin–zirconia interface: An in vitro study

“…[ 11 ] While a roughened zirconia surface is more retentive than a polished one, merely sandblasting is not optimal, as evidenced by the low shear bond strength of the control group. [ 5 ]…”

“…[ 12 ] The chairside application of universal adhesives may also facilitate intraoral repair of zirconia restorations. [ 5 ]…”

“…However, it is not sufficient to create a durable bond alone. [ 5 ] Tribochemical coating, which involves silica deposition on the zirconia surface, has also been attempted. However, few studies have reported that this technique only provides an air abrasion-like effect.…”

The influence of resin cement thicknesses on shear bond strength of the cement-zirconia

“…It aims to reduce clinical steps and errors [8]. The universal adhesive aims to incorporate potential chemical monomers into a single-bottle, which is designed to bond with both direct and indirect restorations, including ceramics, composites, and metals [9,10]. This provides dentists with more options when choosing an optimal protocol for bonding with different prepared restorations.…”

Effects of various zirconia surface treatments for roughness on shear bond strength with resin cement

“…기계적인 결합을 위한 표면처리 방법으로는 airborne-particle abrasion (APA) [12][13][14], erbium:yttrium-aluminum-garnet (Er:YAG) 레이저 표면처리 [15,16], 불산을 이용한 표면 에칭처리 [17][18][19]…”