127 posters, 2 topics, 24 sessions, 326 authors, 85 institutions
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2023 ACP ANNUAL SESSION
October 25-28 | San Diego, CA

190
Comparison between Vickers hardness of Ceramic and Hybrid-Ceramic materials
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Original Research
The study’s aim is to compare Vickers hardness of five definitive crown materials in a controlled laboratory setting. Materials & Methods 5 specimens (15 x 12 x 1.5 mm) were obtained from each tested material: zirconia (Lava Ultimate), lithium disilicate (IPS e.max CAD), lithium silicate reinforced with zirconia (Celtra Duo CAD), dual polymer hybrid ceramic (Vita Enamic) and resin ceramic hybrid (VarseoSmile Crown Plus). Vickers indenter (Wilson VH3100, Buehler) was used to create 6 pyramid-shaped indentations on each specimen and surface hardness was then measured. Results: There’s statistically significant difference in Vickers Hardness between all tested materials. Zirconia has highest Vickers hardness and VarseoSmile BEGO has lowest Vickers hardness. Celtra Duo higher mean microhardness than Emax, yet still lower than Zirconia Vita Enamic had lower microhardness than both Emax and Zirconia VarseoSmile BEGO has lower microhardness than both Emax and Zirconia. Conclusion: Vickers Hardness for tested materials can be classified as follows: VarseoSmile > Vita Enamic > Emax > Celtra Duo > Zirconia.
