Purpose: This in-Vitro research was performed to determine how zirconia and titanium one-piece implants are bonded to zirconia superstructure crown using different luting cements.
Materials and methods: sixty-four zirconia ceramic superstructure (ceramill zolid) were bonded to thirty-two one-piece titanium implants and thirty-two one-piece zirconia implants, using four different luting agents: group GI: glass-ionomer cement, group RG: resin-modified G.I, group SA: self-adhesive resin cement and group CR: conventional resin cement. Subsequently to thermocycling (5°C to 55°C water over a 15,000-cycle span, with a dwell time of 15 seconds), the crowns were detached vertically (pull-out test) with a Universal Testing Machine. Post-Hoc Tukey test was used to detect pairs of comparisons. One-way ANOVA test was used for statistical analysis.
Results: The titanium and zirconia groups differed significantly (P <.001). With titanium specimens, the average bond strength values were higher than in the zirconia specimens. The highest reported value was for the conventional resin cement group (CR) of titanium implants (630.38±83.0 N) while the lowest one was reported for glass ionomer cement (GI) of zirconia implants (129.64±15.94 N).
Conclusions: The proper selection of a luting agent when bonding zirconia ceramic superstructure onto one-piece zirconia implants is important. Conventional resin cements and self-adhesive cements could be used for bonding of zirconia superstructure for both titanium and zirconia implants.