Lubas Malgorzata, Jasinski Jaroslaw Jan, Zawada Anna, Przerada Iwona
Department of Materials Engineering, Czestochowa University of Technology, Armii Krajowej 19, 42-200 Czestochowa, Poland.
National Centre for Nuclear Research, Materials Research Laboratory, 05-400 Otwock, Poland.
Materials (Basel). 2021 Dec 24;15(1):116. doi: 10.3390/ma15010116.
The metal-ceramic interface requires proper surface preparation of both metal and ceramic substrates. This process is complicated by the differences in chemical bonds and physicochemical properties that characterise the two materials. However, adequate bond strength at the interface and phase composition of the titanium-bioceramics system is essential for the durability of dental implants and improving the substrates' functional properties. In this paper, the authors present the results of a study determining the effect of mechanical and chemical surface treatment (sandblasting and etching) on the strength and quality of the titanium-low-fusing dental porcelain bond. To evaluate the strength of the metal-ceramic interface, the authors performed mechanical tests (three-point bending) according to EN ISO 9693 standard, microscopic observations (SEM-EDS), and Raman spectroscopy studies. The results showed that depending on the chemical etching medium used, different bond strength values and failure mechanisms of the metal-ceramic system were observed. The analyzed samples met the requirements of EN ISO 9693 for metal-ceramic systems and received strength values above 25 MPa. Higher joint strength was obtained for the samples after sandblasting and chemical etching compared to the samples subjected only to sandblasting.
金属-陶瓷界面需要对金属和陶瓷基体进行适当的表面处理。由于这两种材料具有不同的化学键和物理化学性质，该过程变得复杂。然而，钛-生物陶瓷系统界面处足够的结合强度和相组成对于牙科植入物的耐久性以及改善基体的功能特性至关重要。在本文中，作者展示了一项研究的结果，该研究确定了机械和化学表面处理（喷砂和蚀刻）对钛-低熔牙科烤瓷结合强度和质量的影响。为了评估金属-陶瓷界面的强度，作者根据EN ISO 9693标准进行了机械测试（三点弯曲）、微观观察（扫描电子显微镜-能谱分析）和拉曼光谱研究。结果表明，根据所使用的化学蚀刻介质不同，观察到金属-陶瓷系统具有不同的结合强度值和失效机制。分析的样品符合EN ISO 9693对金属-陶瓷系统的要求，并且获得了高于25 MPa的强度值。与仅进行喷砂处理的样品相比，经过喷砂和化学蚀刻处理的样品获得了更高的结合强度。
