Improving adhesion between luting cement and zirconia-based ceramic with an alternative surface treatment

Abstract

This study evaluated the influence of an alternative surface treatment on the microshear bond strength (μsbs) of zirconia-based ceramic. Thirty-five zirconia disks were assigned to five groups according to the following treatments: Control (CO), glass and silane were not applied to the zirconia surface; G1, air blasted with 100μm glass beads + glaze + silane; G2, a gel containing 15% (by weight) glass beads applied to the ceramic surface + glaze + silane; G3, a gel containing 25% (by weight) glass beads applied to the ceramic surface + glaze + silane; and G4, a gel containing 50% (by weight) glass beads applied to the ceramic surface + glaze + silane. The specimens were built up using RelyX ARC ® , according to the manufacturer's recommendations, and inserted in an elastomeric mold with an inner diameter of 0.8 mm. The μsbs test was performed using a testing machine at a crosshead speed of 0.5 mm/min. ANOVA and Tukey's test (p < 0.05) were applied to the bond strength values (in MPa). CO (15.6 ± 4.1) showed the lowest μsbs value. There were no statistical differences between the G1 (24.9 ± 7.4), G2 (24.9 ± 2.3), G3 (35.0 ± 10.3) and G4 (35.3 ± 6.0) experimental groups. Those groups submitted to surface treatments with higher concentrations of glass showed a lower frequency of adhesive failures. In conclusion, the glass application improved the interaction between the ceramic and the luting cement.

Characterization of Conventional and High-Translucency Y-TZP Dental Ceramics Submitted to Air Abrasion

“…However, the absence of silica in their structure renders Y-TZP ceramic materials not susceptible to hydrofluoric acid etching. To overcome this limitation, approaches such as air-abrasion, treatment with gas plasma, silica coating, use of phosphate monomers and fusing glass beads have been suggested to modify the Y-TZP ceramic surfaces in order to achieve strong and reliable bond strengths with the resin cements (5,6).…”

Surface characterization of monolithic zirconia submitted to different surface treatments applying optical interferometry and raman spectrometry

“…Additionally, blasting with glass beads is a slow and mild process that effectively strips the zirconia surface, without causing phase transformation 13) . This method has been introduced in combination with silane and resin cement with promising bond strength results 25) .…”

Bond strength of surface-treated novel high translucent zirconia to enamel

“…The pre-treatment consisted of a lithium silicate spray which, according to Whitepeaks, would enable the surface to be etched and adhesively cemented. The method of applying an etchable inner surface of the zirconia, to be able to adhesively lute it to the tooth has been tried previously with varying results [36][37][38][39][40][41][42][43][44]. Thus, a comparison of shear bond strength between a coated and an uncoated WCS would be interesting.…”