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Volume 41 , Issue 3
May/June 2021
Pages 451–455

Influence of Thickness and Shade on the Color of Layered Novel Nanohybrid Composite Systems

Daniele Angerame, MD, DDS/Lidia Fanfoni, PhD/Matteo De Biasi, DDS, MS, PhD/Lorenzo Bevilacqua, DDS, MS/Luigi Generali, DDS

PMID: 34076645
DOI: 10.11607/prd.4787

The influence of the layer thickness and composite shade on the final color of Ceram.X composites (Dentsply Sirona) was tested, selecting five intermediate-translucency Ceram.X Universal shades, three high-translucency Ceram.X Duo “enamel” shades, and four low-translucency Ceram.X Duo “dentin” shades. Using cylindrical molds, 850 specimens were obtained, representing the whole array of possible Universal single specimens (in seven thicknesses, ranging from 1.0 to 4.0 mm in 0.5-mm increments) and Duo combinations. The CIELAB coordinates of each specimen were determined with a spectrophotometer. Different thicknesses and composites were compared with Clark’s ΔE. The difference in color among specimens of different thicknesses was material-dependent. The thickness and shade of the composite markedly affected the color yield of the Ceram.X system. For each shade of the Universal systems, only one Duo enamel-dentin combination corresponded.

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