Curing through Ceramics: Influence of Different Light-Curing Units and Curing Modes on Bond Strength

Objectives: To measure and compare the bond strength between three different types of ceramics resin cement, as well degree conversion cement after using light-curing units curing modes. Methods: Three ceramics—Leucite-reinforced (Empress CAD), Lithium disilicate (Emax Zirconia ZirCAD)—of varying thicknesses (1.5 mm 2.0 mm) were bonded to a light-cure (Variolink Esthetic LC). Light-curing was carried out monowave LCU (3M Elipar DeepCure-S LED Curing Light with irradiance 1470 mW/cm2) polywave (Ivoclar Bluephase PowerCure) High, Turbo, 3 s modes, respectively (1200, 2100, 3000 mW/cm2). A chevron-notch test (total n = 288) conducted calculate fracture energy interfacial (J/m2). The cure (%DC) residual on debonded surfaces measured Fourier Transform Infrared Spectroscopy (FTIR). Collected data statistically analysed under SPSS ver. 27 by conducting an ANOVA Bonferroni post hoc test. mode failure established scanning electron microscope (SEM). Results: significant difference in found ceramic material groups (p < 0.01). Cement cured through Empress that 2 thick showed highest (1.36 ± 0.46 J/m2), while lowest observed (0.26 0.07 J/m2) Emax CAD mode. use LCUs modes had influence %DC seen all groups, except ZirCAD. dominant for Empress, EmaxCAD, EmaxZirCAD cohesive, adhesive, mixed, respectively. Conclusions: type its thickness can significantly affect strength, results is more effective than when ceramics.