NanoDay 2021 – Poster 14 – Nathalie Sawczuk and Bryce Brandfon



Nathalie Sawczuk

The Influence of Varying Layer Shades on the Color Between the Estelite Omega Composite and the Vita Shade Guide Standard Shades

Nathalie Sawczuk and Bryce Brandfon

Authors: Nathalie Sawczuk, Bryce Brandfon, Francielle Floriani, Mateus Rocha, Dayane Oliveira

Faculty Mentor: Dayane Oliveira, PhD

College: College of Dentistry

Department: Restorative Dental Sciences


This study describes the color matching layering enamel and dentin shades using the Estelite Omega in comparison to the Vita shade guide standard shades. Composite veneers of the Estelite Omega (Tokuyama) were made by layering the enamel (EB1, EA1, EA2, EA3) and dentin shades (DBL1, DBL2, DA1, DA2, DA3) together (n=3). The color measurements were taken using a spectrophotometer (Easyshade V®, Vita Zahnfabrik). A Vita shade guide (Easyshade V®, Vita Zahnfabrik) acted as the gold standard for each shade comparison. The color difference between the composite veneers and the Vita shade guide shades was calculated using the CIEDE2000 formula. The results show that for the B1 shade, the best match would be layering EB1 with DA1, DA2 or DA3 (ΔE00= 0.44 0.0, ΔE00= 0.84 0.1 and ΔE00= 0.79 0.3, respectively). For the A1 shade, the most suitable color correlation came from layering EB1 and DBL1 (ΔE00= 1.49 0.1). The majority of composite veneers created by the layering technique failed to demonstrate no statistical difference (ΔE00 2.5) when compared to the Vita shade guide. Shades B2, A2, or A3 shades had no acceptable color matches, with each corresponding composite exhibiting a ΔE00 value greater than 2.5. The layering of enamel and dentin Estelite Omega composite shades were not able provide color match for all Vita shade guide standard shades.