Evaluation of universal bonding agent containing MDP on zirconia bonding

Abstract

The purpose of this study was to compare the evaluation of the universal bonding agents and their surface treatment methods, sandblasting and zirconia primer application, on Y-TZP zirconia bonding.

60 Y-TZP blocks (20 mm x 80 mm x 5 mm) were produced. Three universal bonding agents (Single Bond Universal(SBU), All-Bond Universal(ABU), GC-Premio Universa(GCU), one MDP containing self-etching agent (Clearfil SE bond(CSE)) and one total etching agent (Optibond FL(OFL)) were tested with/without sandblasting and zirconia primer (Z-Primer plus(ZP)).

Bonding procedure of each group was performed according to the guidance of the manufacturer.

Microshear bond test was carried out using a universal testing machine with cross-head speed of 1.0 mm/min. Peak load to fracture (N) was measured for each specimen.

Data for bonding agent, z-primer, sandblasting were analyzed by 3-way ANOVA. Bonferroni Post-hoc analysis was performed for each z-primer, sandblasting, materials, materials & z-primer, and materials & sandblasting deemed statistically significant.

As a result, the sandblasting and z-primer application increased the bond strength of the Y-TZP and resin composite (P<0.05). There are significant differences between SBU and ABU, GCU, ZP, OFL group. Also, there is a significant difference between OFL and CSE group (P<0.001).

Following the results of this experiment, generally sandblasting and Z-primer application can increase bond strength between Y-TZP and composite resin. However, SBU showed superior bond strength than other universal bonding agents with or without sandblasting and Z-primer, and it can simplify the clinical procedure.