Franić Katarina, Brundić Ana, Matijević Jurica, Ivanišević Ana, Miletić Ivana, Baraba Anja
University of Zagreb, School of Dental Medicine, Gundulićeva 5, 10000 Zagreb, Croatia.
University of Zagreb, School of Dental Medicine, Department of Endodontics and Restorative Dentistry, Gundulićeva 5, 10000 Zagreb, Croatia.
Materials (Basel). 2025 Aug 30;18(17):4075. doi: 10.3390/ma18174075.
The aim of this study was to evaluate the effect of human blood contamination, before and after hardening of the materials, on microhardness of high-viscosity Fuji IX GP Extra (Fuji IX) and resin-modified Fuji II LC (Fuji II) glass-ionomer cement (GIC) and glass-hybrid material EQUIA Forte HT (EQUIA), with and without protective coating EQUIA Forte Coat (Coat), before and after thermocycling. Four groups (n = 40): 1. Fuji IX; 2. Fuji II; 3. EQUIA and 4. EQUIA + Coat were further subdivided into 3 subgroups: (1) Control; (2) blood contamination before hardening; (3) blood contamination after hardening, resulting in a total of 12 groups of 10 samples each. Samples were prepared using teflon molds (5 mm × 2 mm). Microhardness was measured using a Vickers microhardness tester before and after thermocycling (10,000 cycles), and data were statistically analyzed (Kolmogorov-Smirnov test, ANOVA, Scheffe's test). In the control groups, the highest microhardness was measured for EQUIA+Coat before thermocycling (70.71 ± 8.79) and after thermocycling (68.6 ± 7.65). Within the groups exposed to blood after hardening, the highest microhardness was recorded in the thermocycled EQUIA+Coat group (73.07 ± 8.85). Blood contamination before hardening negatively affected the microhardness of Fuji II, Fuji IX, and EQUIA+Coat. Exposure to blood after hardening increased the microhardness of Fuji IX and EQUIA, thermocycled Fuji IX and thermocycled EQUIA + Coat samples.
本研究旨在评估材料硬化前后人为血液污染对高粘度富士IX GP Extra（富士IX）、树脂改性富士II LC（富士II）玻璃离子水门汀（GIC）以及玻璃混合材料EQUIA Forte HT（EQUIA）的显微硬度的影响，这些材料在热循环前后有无使用EQUIA Forte Coat（涂层）保护。四组（n = 40）：1. 富士IX；2. 富士II；3. EQUIA；4. EQUIA + 涂层，进一步细分为3个亚组：（1）对照组；（2）硬化前血液污染组；（3）硬化后血液污染组，共12组，每组10个样本。样本使用聚四氟乙烯模具（5毫米×2毫米）制备。在热循环（10,000次循环）前后使用维氏显微硬度计测量显微硬度，并对数据进行统计学分析（柯尔莫哥洛夫-斯米尔诺夫检验、方差分析、谢费检验）。在对照组中，热循环前EQUIA + 涂层的显微硬度最高（70.71 ± 8.79），热循环后（68.6 ± 7.65）。在硬化后暴露于血液的组中，热循环后的EQUIA + 涂层组显微硬度最高（73.07 ± 8.85）。硬化前的血液污染对富士II、富士IX和EQUIA + 涂层的显微硬度有负面影响。硬化后暴露于血液增加了富士IX和EQUIA、热循环后的富士IX和热循环后的EQUIA + 涂层样本的显微硬度。
