Color stability and degree of conversion of amine-free dual cured resin cement used with two different translucencies of lithium disilicate ceramics

Objective: The present study aims to evaluate the color stability and degree of conversion amine-free dual cured resin cement compared light amine-containing cements used with two different translucencies thin esthetic restorations. Material Methods: A total 120 specimens were prepared for testing (n=60). divided into three main groups according type. Group 1: cured, 2: 3: cured. Each group was further subdivided ceramic translucency subgroups: high low translucency. Color assessed by a spectrophotometer before after thermal aging. For assessment (n=60), Fourier transform infrared spectroscopy at time intervals. Statistical analysis performed using multi-factorial ANOVA, followed one-way ANOVA Bonferroni correction. Results: Amine-containing showed significantly higher Eab E00 in both (4.5±0.3, 3.5±0.3 respectively 3.8±0.4, 3.0±0.3 translucency) than other tested (p<0.001). highest (DC) shown 2 weeks (86.27±0.74). Conclusion: Aminefree can be an alternative one cementation veneers since it comparable conversion. KEYWORDSResin cement; Color; Polymerization; Light curing dental resins; Lithium disilicate.