Furkan AKKILIÇ, Hacer BALKAYA
Meandros Medical and Dental Journal - 2026;27(3):392-402
Objective: The aim of this study was to evaluate and compare two one-shade resin composites employing different light-matching technologies with a conventional nano-hybrid composite in terms of translucency parameter, tooth color blending effect, surface microhardness, and degree of monomer conversion at different restoration thicknesses. Materials and Methods: One-shade composites using smart chromatic technology (Omnichroma; SCT) and adaptive light-matching technology (Charisma Diamond One; ALT), and a nano-hybrid composite (Filtek Z550; NHC) were evaluated at 1-mm and 2-mm thicknesses. Standardized specimens were prepared for translucency parameter, surface microhardness, and degree of monomer conversion analyses. Tooth color blending was assessed on extracted maxillary incisors. Data were analyzed using appropriate parametric or non-parametric statistical tests (p < 0.05). Results: Translucency parameter did not differ significantly among materials of the same thickness (p > 0.05), but significant differences were observed in overall comparisons (p < 0.001). Color blending was similar at 1 mm, whereas at 2 mm NHC showed lower DeltaE values than ALT (p = 0.001). After water storage, DeltaE values decreased only in SCT-1 and NHC-1 groups (p < 0.05). NHC showed the highest microhardness, while SCT exhibited the highest monomer conversion (p < 0.05). Conclusion: Composite formulation and restoration thickness influence optical behavior, surface microhardness, and polymerization-related outcomes.
