Al-Angari Sarah S, Hara Anderson T, Chu Tien-Min, Platt Jeffrey, Eckert George, Cook N Blaine
Division of Dental Biomaterials, Department of Restorative Dentistry, Indiana University School of Dentistry.
J Oral Sci. 2014 Mar;56(1):11-6. doi: 10.2334/josnusd.56.11.
We compared a zinc-reinforced glass ionomer restorative material (ChemFil Rock) with three commercially available glass ionomer cements (GICs), namely, Fuji IX GP Extra, Ketac Molar Quick Aplicap, and EQUIA Fil, with respect to fracture toughness, microhardness, roughness, and abrasive wear. Fracture toughness (KIC) was tested according to ISO 13586 (n = 10). Hardness, roughness, and abrasive wear were also tested (n = 9). Data were analyzed using the Wilcoxon rank-sum test with adjustment for multiple comparisons (α = 0.05). As compared with the other GICs ChemFil Rock exhibited a greater increase in surface roughness (P < 0.05) and lower microhardness (P < 0.01). The wear resistance of ChemFil Rock was comparable to that of the other GICs (P > 0.05). ChemFil Rock had significantly lower fracture toughness as compared with EQUIA Fil (P = 0.01) and significantly higher fracture toughness as compared with the other GICs (P < 0.02). In conclusion, as compared with the three other commercially available GICs, ChemFil Rock had intermediate fracture toughness, the lowest microhardness, and the greatest change in surface roughness.
我们将一种锌增强玻璃离子修复材料（ChemFil Rock）与三种市售玻璃离子水门汀（GICs），即富士IX GP Extra、Ketac Molar Quick Aplicap和EQUIA Fil，在断裂韧性、显微硬度、粗糙度和磨耗方面进行了比较。根据ISO 13586测试断裂韧性（KIC）（n = 10）。还测试了硬度、粗糙度和磨耗（n = 9）。使用Wilcoxon秩和检验对数据进行分析，并对多重比较进行调整（α = 0.05）。与其他GICs相比，ChemFil Rock的表面粗糙度增加更大（P < 0.05），显微硬度更低（P < 0.01）。ChemFil Rock的耐磨性与其他GICs相当（P > 0.05）。与EQUIA Fil相比，ChemFil Rock的断裂韧性显著更低（P = 0.01），与其他GICs相比，断裂韧性显著更高（P < 0.02）。总之，与其他三种市售GICs相比，ChemFil Rock具有中等的断裂韧性、最低的显微硬度和最大的表面粗糙度变化。
