Polymerization Efficiency of a Dual-Cured Resin Cement through Zirconia with Three Different Cusp Inclinations

摘要

Assessing the polymerization efficiency of a dual-cured resin cement through zirconia with three different cusp inclinations is the aim of this study. Seventy-two resin cement (Multilink Speed) specimens were light-cured through the zirconia with three different cusp inclinations (30°, 20°, and 0°) for 20?s or 40?s (). For each group, the Vickers hardness (VH) measurement was performed on half of the specimens, whereas the degree of conversion (DC) was tested for the other half with a Fourier transform infrared spectrometer. The recorded data were analyzed with a two-way ANOVA. Varied VH (32.3?±?3.2–40.3?±?4.8) and DC (50.5%?±?3.0%–59.6%?±?2.4%) values were obtained from different groups. The cusp inclinations significantly affect the VH () and DC () of the resin cement, and the curing time exhibited a significant effect on the DC () of resin cement but not on the VH (). In conclusion, the cusp inclination of zirconia significantly affects the polymerization efficiency of dual-cured resin cement.