ABSTRACT
Background. Zirconia ceramic restoration has gained popularity in dentistry. Numerous studies were conducted to investigate the bond strength of universal bonding agents and have set reliable cementation protocols for zirconia. This study aims to determine the different effects of air-abrasive particle size and types of universal bonding agents on the shear bond strength of zirconia with dentin. Materials and Methods. This study used 60 samples of bar-shaped zirconia (6x4x4 mm). These samples were randomly divided into 2 groups and 30 samples. Two groups were further divided into 4 subgroups according to a combination of 2 different sizes of aluminum oxide abrasive particles (50 μm and 110 μm) and two different universal bonding agents [Single Bond Universal (SB) and All Bond Universal (AB)]. Every 4 subgroups namely AB50, AB110, SB50, and SB110 consist of 15 samples. The sample was cemented with resin adhesive cement. All samples were tested for shear bond strength with Universal Testing Machine (MPa). Data were analyzed using one-way ANOVA and Tukey's test. Results. There was a significant difference between AB 50 μm (AB50) group and with SB 110 μm (SB110) group (p<0.05). The highest shear bond strength was the SB110 group and the lowest one was the AB50 group. Conclusion. The shear bond strength of zirconia to a dental substrate is affected by the combination of different air-abrasive particle sizes and types of universal bonding. Reliable cementation protocols which crucial for clinical long-term success affected by complex mechanisms and materials used.
