Evaluation of Microhardness of 3D Printable Permanent Dental Restorative Materials

Authors : Nina Farshidian, Ezgi Acar, Elif Nur Kaya, Pınar Yılmaz Atalı, Bilge Tarçın

Pages : 117-125

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Publication Date : 2025-08-31

Article Type : Research Paper

Abstract :Objectives: This study aimed to evaluate the microhardness of 3D-printed permanent restorative materials exposed to commonly consumed beverages. Material and Methods: Three different 3D-printed permanent restorative materials (Crowntec, SAREMCO; Permanent Crown Resin, FORMLABS; VarseoSmile TriniQ, BEGO) were used to prepare 120 disk-shaped (10×2 mm ) specimens and one CAD/CAM block (Cerasmart, GC) was used to prepare 40 specimens (n=10). Designs were created with SolidWorks 2023, and 2 mm slices were obtained from the GC block. Specimen surfaces were polished with aluminum oxide disks (Sof-lex, 3M) and a diamond-impregnated polishing system (Eve Diacomp-Plus). Specimens were subjected to thermocycle (5-55°C, 5000 cycles) in distilled water, according to ISO/TS 11405:39, simulating six months of clinical aging. They were then immersed in distilled water, coffee, cola, and cherry juice corresponding to six months. Microhardness (VHN) was measured at baseline (t₀), after thermal cycling (t₁), and after immersion (t₂) using a Vickers tester. Data were analyzed by three-way ANOVA and Tukey HSD post hoc test (p 0.05). Conclusion: Within the limitations of this study, the microhardness values of the tested 3D permanent restorative materials were affected by coffee, cola, and cherry juice, leading to a decrease in microhardness.
Keywords : İçecek, mikrosertlik, restoratif materyal, üç boyutlu yazıcı

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