Electrophoretic Deposition as a New Bioactive Glass Coating Process for Orthodontic Stainless Steel
Electrophoretic Deposition as a New Bioactive Glass Coating Process for Orthodontic Stainless Steel
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DOI：
10.3390/coatings7110199
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发表时间：
2017-11-01
期刊：
影响因子：
3.4
通讯作者：
Mizoguchi, Itaru
中科院分区：
文献类型：
--
作者：
Kawaguchi, Kyotaro;Iijima, Masahiro;Mizoguchi, Itaru
本研究采用电泳沉积法对正畸不锈钢表面进行生物活性玻璃（BG）改性。BG涂层，其特征在于通过分光光度计，扫描电子显微镜与能量色散X射线光谱仪，和X射线衍射。使用渐进载荷划痕试验研究摩擦性能。采用纳米压痕法测定了酸蚀后牙釉质的力学性能，研究了酸蚀后牙釉质的再矿化能力。使用交流电的EPD工艺在反射率和亮度方面都产生了更高的值。此外，BG涂层比使用直流电制备的涂层薄，并且是完全无定形的。所有BG涂层均表现出良好的界面结合力，Si和O是主要成分。大多数BG涂层试样产生的摩擦力略高于非涂层试样。浸泡与大多数BG涂层标本的硬度和弹性模量的蚀刻釉质标本恢复显着增加浸泡时间与非涂层标本相比，和显着的酸中和观察BG涂层标本。采用EPD和BG涂层对正畸不锈钢进行表面改性，可开发出外观和耐腐蚀性均较好的无细胞毒性的新型正畸金属矫治器。
This study investigated the surface modification of orthodontic stainless steel using electrophoretic deposition (EPD) of bioactive glass (BG). The BG coatings were characterized by spectrophotometry, scanning electron microscopy with energy dispersive X-ray spectrometry, and X-ray diffraction. The frictional properties were investigated using a progressive load scratch test. The remineralization ability of the etched dental enamel was studied according to the time-dependent mechanical properties of the enamel using a nano-indentation test. The EPD process using alternating current produced higher values in both reflectance and lightness. Additionally, the BG coating was thinner than that prepared using direct current, and was completely amorphous. All of the BG coatings displayed good interfacial adhesion, and Si and O were the major components. Most BG-coated specimens produced slightly higher frictional forces compared with non-coated specimens. The hardness and elastic modulus of etched enamel specimens immersed with most BG-coated specimens recovered significantly with increasing immersion time compared with the non-coated specimen, and significant acid-neutralization was observed for the BG-coated specimens. The surface modification technique using EPD and BG coating on orthodontic stainless steel may assist the development of new non-cytotoxic orthodontic metallic appliances having satisfactory appearance and remineralization ability.