ISSN : 2663-2187

Color stability of advanced lithium silicate ceramics after coffee thermocycling

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Ghada Essam BDS , Dr. Bassem Kandil BDS, MDSc, PHD , Prof Dr. Amr EL-Etreby BDS,MDSc, DDSc
» doi: 10.48047/AFJBS.6.15.2024.10264-10275

Abstract

Objective: To compare the color stability of different advanced lithium disilicates (ALDS) before and after coffee thermocycling. Materials and methods: Twenty-one rectangular- shaped disk specimens were prepared from three different lithium silicate-based materials (CEREC Tessera, Initial Lisi, Amber Mill) (n=7) for each group. All specimens were finished and polished. Color coordinates were measured with a spectrophotometer. All specimens were then aged with 5000 cycles of coffee thermocycling, and the measurements were repeated. The color difference (∆E00) was calculated. Statistical analysis was performed using mixed model two-way ANOVA followed by the Tukey post hoc test (α=0.05). Results: CEREC Tessera had the least ∆E00=1.8 followed by Initial Lisi=2.24 and Amber mill=3.1. Conclusion: Cerec Tessera was found to be a promising material regarding color stability.

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