Assessment of all-ceramic systems' influence on dual-cure resin cement polymerization: An in vitro study

TL;DR

This study shows that different ceramic materials affect how well resin cement hardens, with lithium disilicate being best and monolithic zirconia worst.

Contribution

The study empirically demonstrates how various all-ceramic systems influence dual-cure resin cement polymerization.

Findings

Lithium disilicate showed the highest degree of resin cement polymerization.

Monolithic zirconia had the lowest polymerization effectiveness.

Ceramic type significantly impacts bond strength and microhardness of resin cement.

Abstract

The polymerization of dual-cure resin cements is critical for the long-term success of all-ceramic restorations is of interest. In
this in vitro study, sixty ceramic discs were fabricated from lithium disilicate, zirconia-reinforced lithium silicate,
monolithic zirconia, feldspathic porcelain and polymer-infiltrated ceramic network (n=12/group). Dual-cure resin cement was light-cured
through each disc and the degree of conversion; Vickers microhardness and bond strength were measured using FTIR, microhardness testing
and a universal testing machine. One-way ANOVA revealed significant differences among groups (p<0.001), with lithium disilicate showing
the highest values and monolithic zirconia the lowest. Thus, we show that the type of ceramic system significantly influences resin
cement polymerization, emphasizing lithium disilicate as the most favorable and monolithic zirconia as the least.