Study on fabrication of orthodontic brackets with the photocatalytic function of titanium dioxide.
Study on fabrication of orthodontic brackets with the photocatalytic function of titanium dioxide.
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二氧化钛光催化功能正畸托槽的制作研究
DOI：
10.4012/dmj.28.388
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发表时间：
2009
影响因子：
2.5
通讯作者：
S. Goto
中科院分区：
文献类型：
--
作者：
Yosuke Sato;K. Miyazawa;N. Sato;K. Nakano;Y. Takei;T. Kawai;S. Goto
我们试图研究金红石型二氧化钛的光催化功能是否适用于正畸托槽。为此，对 TiO(2) 样品进行压缩和烧结。然后，通过X射线衍射分析每个样品以确认没有发生成分变化。接下来，用比色计、扫描电子显微镜(SEM)和原子力显微镜(AFM)观察每个样品的表面。测量了煅烧后的基本材料性能。采用甲苯胺蓝脱色法评价光催化功能。随着煅烧温度的升高，观察到以下现象：晶粒长大，表面粗糙度和表面亮度降低，但收缩率和抗压强度增加。与其他托槽材料相比，TiO(2)材料的美观和机械性能足够好。此外，经过高温煅烧后，其具有良好的光催化功能。基于所获得的良好结果，金红石型二氧化钛似乎适用于自清洁正畸托槽的制造。
We sought to investigate whether the photocatalytic function of rutile-type titanium dioxide is applicable for orthodontic brackets. To this end, TiO(2 )specimens were compressed and sintered. Then, each specimen was analyzed by X-ray diffraction to confirm that no compositional changes had taken place. Next, the surface of each specimen was observed with a colorimeter, scanning electron microscope (SEM), and atomic force microscope (AFM). Fundamental material properties after calcination were measured. The photocatalytic function was evaluated using the decolorization method with toluidine blue. The following were observed with the increase of calcinations temperature: growth of crystal particles, decrease in surface roughness and surface brightness, but increase in shrinkage percentage and compressive strength. The aesthetic and mechanical properties of TiO(2 )material were adequate when compared with other bracket materials. In addition, it had a satisfactory photocatalytic function after high-temperature calcination. Based on the favorable results obtained, rutile-type titanium dioxide seemed to be applicable for the fabrication of self-cleaning orthodontic brackets.
使用超高真空原子力显微镜 (UHV-AFM) 测量 BaTiO_3 域结构
DOI：
--
发表时间：
--
期刊：
Journal of the Korean Physical Society (掲載決定)
影响因子：
--
作者：
S. Kaku;S. Miyauchi;Y. Watanabe
通讯作者：
Y. Watanabe