Alterations to Titanium Surface Depending on the Fluorides and Abrasives in Toothpaste.
Alterations to Titanium Surface Depending on the Fluorides and Abrasives in Toothpaste.
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DOI：
10.3390/ma15010051
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发表时间：
2021-12-22
期刊：
影响因子：
--
通讯作者：
Kakimoto K
中科院分区：
文献类型：
--
作者：
Shuto T;Mine Y;Makihira S;Nikawa H;Wachi T;Kakimoto K
牙膏中的氟化物和磨料可能会导致用于植入物和其他假体的钛腐蚀和变质。本研究的目的是探讨氟化物和磨料的存在或不存在以及类型对钛表面纹理的影响。使用磨料试验机在纯钛盘上进行牙膏刷牙。未涂刷的钛盘作为对照样品。测定了钛的表面粗糙度、颜色和光泽度，并分析了与对照组的差异。此外，使用扫描电子显微镜观察牙膏中的钛表面和磨料，比较每个样品的表面纹理。与超纯水相比，一些牙膏（磨料+）显著增加了表面粗糙度、颜色和光泽的差异。含有许多多边形磨料颗粒的牙膏（氟化物+/磨料+）导致最大的颜色差异，并表现出明显的划痕和更多的污染或腐蚀样黑点。相比之下，用不含氟化物或磨料（氟化物- /磨料-）的牙膏刷牙对钛表面的影响很小。这些结果表明，刷牙所用牙膏中的氟化物和磨料可能是影响钛表面质地和耐腐蚀性的因素。
Fluoride and abrasives in toothpastes may cause corrosion and deterioration of the titanium used for implants and other prostheses. The purpose of this study was to investigate how the presence or absence and types of fluoride and abrasives affected the titanium surface texture. Brushing with toothpastes was performed on pure-titanium discs using an abrasive testing machine. Unprocessed titanium discs without brushing were used as control samples. Surface roughness, color, and gloss of titanium were measured and the differences compared with the control were analyzed. Additionally, titanium surfaces and abrasives in toothpastes were observed using a scanning electron microscope to compare the surface texture of each sample. Some toothpastes (abrasive+) significantly increased the difference in surface roughness, color, and gloss, compared with ultrapure water. Toothpaste (fluoride+/abrasive+) that had many polygonal abrasive particles led to the largest color differences and exhibited notable scratches and a larger number of contaminant- or corrosion-like black spots. In contrast, brushing with toothpaste without fluoride or abrasives (fluoride−/abrasive−) caused little change to the titanium surface. These results suggest that both fluoride and abrasives in toothpaste used for brushing may be factors that affect surface texture and corrosion resistance of titanium.
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