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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.

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