Hsu Shu-Min, Ren Fan, Chen Zhiting, Kim Mijin, Fares Chaker, Clark Arthur E, Neal Dan, Esquivel-Upshaw Josephine F
Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, FL 32610, USA.
Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA.
Materials (Basel). 2020 Mar 8;13(5):1215. doi: 10.3390/ma13051215.
The effect of a novel silicon carbide (SiC) coating on the chemical durability of a fluorapatite glass-ceramic veneer was investigated by examining weight loss and ion release levels. The hypothesis that this novel coating will exhibit significant corrosion resistance was tested. Inductively coupled plasma atomic emission spectrometer (ICP) was used for ion concentration determination and scanning electron microscopy (SEM) for surface morphology analyses. Samples were immersed in pH 10 and pH 2 buffer solutions to represent extreme conditions in the oral cavity. Analyses were done at 15 and 30 days. The SiC coated group demonstrated significant reduction in weight loss across all solutions and time points ( < 0.0001). Ion release analyses demonstrated either a marginally lower or a significantly lower release of ions for the SiC-coated disks. SEM analysis reveals planarization of surfaces by the SiC-coated group. The surfaces of coated samples were not as corroded as the non-coated samples, which is indicative of the protective nature of these coatings. In conclusion, SiC is a novel coating that holds promise for improving the performance of ceramic materials used for dental applications.
通过检测失重和离子释放水平，研究了一种新型碳化硅（SiC）涂层对氟磷灰石微晶玻璃贴面化学耐久性的影响。对这种新型涂层具有显著耐腐蚀性的假设进行了测试。使用电感耦合等离子体原子发射光谱仪（ICP）测定离子浓度，使用扫描电子显微镜（SEM）分析表面形态。将样品浸入pH值为10和pH值为2的缓冲溶液中，以模拟口腔中的极端条件。在第15天和第30天进行分析。碳化硅涂层组在所有溶液和时间点的失重均显著降低（<0.0001）。离子释放分析表明，碳化硅涂层圆盘的离子释放量略有降低或显著降低。扫描电子显微镜分析显示，碳化硅涂层组的表面变得平整。涂层样品的表面不像未涂层样品那样受到腐蚀，这表明这些涂层具有保护作用。总之，碳化硅是一种新型涂层，有望改善用于牙科应用的陶瓷材料的性能。
