Bioactive glass coating of orthodontic material for the recovery of mechanical properties of etched enamel.
Bioactive glass coating of orthodontic material for the recovery of mechanical properties of etched enamel.
复制标题
正畸材料的生物活性玻璃涂层，用于恢复蚀刻牙釉质的机械性能。
DOI：
10.1166/jbt.2014.1171
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发表时间：
2014
影响因子：
0.1
通讯作者：
Mizoguchi I
中科院分区：
文献类型：
--
作者：
Iijima M;Hashimoto M;Nakagaki S;Muguruma T;Kohda N;Endo K;Mizoguchi I
本研究研究了生物活性玻璃涂层正畸材料在人工唾液中再矿化对蚀刻牙釉质机械性能恢复的影响。利用射频磁控溅射技术在氧化铝盘表面涂覆生物活性玻璃。用磷酸蚀刻人牙釉质块，用氧化铝盘固定在标本台上，然后浸泡在人工唾液中3个月。在蚀刻前后和浸泡过程中对牙釉质表面进行纳米压痕测试。将生物活性玻璃涂层氧化铝片单独浸入人工唾液中1周，用扫描电镜和x射线衍射（XRD）分析沉积晶体。生物活性玻璃涂层盘浸泡后，牙釉质腐蚀标本的力学性能明显恢复。浸泡1周后，观察到生物活性玻璃涂层氧化铝片表面形成针状结构，晶体的XRD谱图证实其由磷酸钙组成。生物活性氧化铝玻璃涂层能加速蚀刻牙釉质的再矿化。
This study investigated the effects of a bioactive glass coating of orthodontic material on the recovery of the mechanical properties of etched enamel via remineralization in artificial saliva. Alumina disks were coated with bioactive glass using radiofrequency magnetron sputtering. Human enamel blocks were etched with phosphoric acid, fixed on a specimen stage with alumina disks, and then immersed in artificial saliva for 3 months. Nanoindentation testing of the enamel surfaces was conducted before and after etching and during the immersion. Bioactive-glass-coated alumina disks were immersed individually in artificial saliva for 1 week and the deposited crystals were analyzed using scanning electron microscopy and X-ray diffraction (XRD). The mechanical properties of the etched enamel specimens immersed with bioactive-glass-coated disks recovered significantly compared to those with the non-coated disks. The formation of needle-like structures was observed on the surfaces of the bioactive-glass-coated alumina disks after immersion for 1 week and the XRD pattern of the crystals confirmed that they consisted of calcium phosphate. Bioactive glass coating of alumina can accelerate the remineralization of etched enamel.