Authors
Merve Ünal, Aysıla Tekeli Şimşek, Berkay Enes Güngör, Bengisu Yıldırım
Published in
BMC oral health. Jun 19, 2026. Epub Jun 19, 2026.
Abstract
This study aimed to evaluate the effects of ceramic composition, resin cement shade, and tooth-shaded background on the optical properties and color differences of high translucent (HT) lithium-based ceramics.
A total of 192 specimens were prepared from four CAD/CAM ceramics: advanced lithium disilicate, lithium disilicate, and two zirconia-reinforced lithium silicate ceramics. The relative translucency parameter (RTP) and opalescence (OP) were evaluated using a digital spectrophotometer. Specimens were evaluated using two resin cement shades (opaque and translucent) and two tooth-shaded backgrounds (A1 and A3). Color differences (ΔE₀₀) between baseline and after cementation measurements were calculated using the CIEDE2000 formula. Data were analyzed using one-way and three-way ANOVA (p < 0.05).
Ceramic material significantly influenced RTP and OP values (p < 0.05). Three-way ANOVA revealed significant main effects of material and cement shade (p < 0.001), as well as a significant material × tooth-shaded background interaction (p = 0.013). Opaque cement resulted in significantly higher color differences than translucent cement across all materials and backgrounds (p < 0.05). Higher ΔE₀₀ values were found on the A3 background.
The final color and optical properties of HT lithium-based ceramics were influenced by ceramic composition and resin cement shade. These findings may help clinicians optimize cement shade and material selection for improved esthetic outcomes.
PMID:
42321774
Bibliographic data and abstract were imported from PubMed on 20 Jun 2026.
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