Abstract
BACKGROUND: The color stability and translucency of dental restorations are influenced by several factors, including the type of cement used, the chemical composition of the materials, and their thickness. This study aims to assess the color stability and translucency of various adhesive systems and CAD/CAM materials after exposure to UV aging. METHODS: A total of 140 specimens were prepared using five different CAD/CAM materials: CEREC (CE), Cerasmart (CS), Vita Enamic (VE), Lava Ultimate (LU), and Grandio (GR), with thicknesses of 0.5 mm and 1 mm. The specimens were randomly divided into two cementation techniques: Dual Cure (DC) and Light Cure (LC). The relative translucency parameter (RTP) was measured initially and after UV aging using the RTP(00) formula, and (∆RTP) was calculated. The specimens' color change (∆E(00)) was determined using the CIEDE2000 formula. Statistical analysis was conducted using Three-Way ANOVA with a significance level of 0.05. RESULT: CE exhibited the least color change (∆E(00)), while LU displayed the highest ∆E(00) across all parameters. There was no significant difference between the DC and LC cementation techniques, except for CS, CE, and VE at a thickness of 0.5 mm, and for CS and CE at 1 mm. Most color changes observed in the groups, were out of clinically acceptable ranges, except for the CE group with a thickness of 1 mm and DC cementation technique. The lowest ∆RTP was noted in specimens with a thickness of 1 mm and DC cementation across all groups. CONCLUSION: The material structure had the most significant impact on ∆E(00), while thickness significantly affected the ∆RTP. The cementation technique had the least influence on ∆E(00) and no effect on ∆RTP. New-generation cement materials, whether Light Cure or Dual Cure, showed similar effects on ∆RTP (p < 0.05). CLINICAL TRIAL NUMBER: None.