Influence of Air Abrasion on Zirconia Bond Strength

Abstract

The aim of the current review was to evaluate the impact on the surface features of zirconia using several airborne-particle abrasion protocols and their consequenceson resin cement shear bond strength by conducting a review including different studies published in the literature of health sciences. Methods and Designs: In the databases of MEDLINE (via PubMed), Scopus and Web of Science an electronic search was conducted. The search included papers from January 2006 up till June 2021, which will answer the following research question “What will be the effect of various surface treatments air-abrasive approaches on zirconia restorations compared to conventional methods regarding zirconia restoration microstructure and the bond strength with dental resin cement?” Results: Of the 215 studies identified, 21 research investigations were suitable for the inclusion criteria selected. In each study, data extracted comprised the following items: author and year of publication, study design, methodological settings and results. Maximum shear bonding strength values were usually found in groups of 50 μm particles abraded, whereas in groups of 120 μm or more the lowest shear bonding strength was seen. Conclusion: It can be concluded from the limits of this research that micromechanically the abrasion of tough zirconia with 50 μm alumina particles subsequent to sintering significantly improved the strength of shear bond, but with the greatest t-m transformation phase. The size, type and pressure of abrasive particles were important elements of micromechanical retention.