Calcium phosphate formation on the phosphorylated dental bonding agent in electrolyte solution
Calcium phosphate formation on the phosphorylated dental bonding agent in electrolyte solution
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DOI：
10.1111/j.1365-2842.2004.01135.x
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发表时间：
2004-01-01
影响因子：
2.9
通讯作者：
Nemoto, K
中科院分区：
文献类型：
--
作者：
Hayakawa, T;Yoshinari, M;Nemoto, K
本研究的目的是研究使用矿化诱导溶液在磷酸化牙科粘结剂上的矿物质形成。将含有磷酸盐单体的Clearfi光键通过光固化和热处理，然后在pH=7.4的Hanks平衡盐溶液(HBSS)中37℃浸泡1、3、5、7、14和28天。在HBSS中浸泡后，白色物质沉积在磷酸化的聚合物上，即固化的光键盘上。浸泡3天后，白色物质变为可见。浸泡7d后，磷酸化聚合物盘表面几乎覆盖有白色物质层。对白色物质进行了X射线衍射、傅里叶变换红外光谱和电子探针显微分析，结果表明，白色物质的主要成分为含碳酸盐的羟基磷灰石。扫描电子显微镜照片显示，大量的羟基磷灰石颗粒融合在一起，每个颗粒由一组大量的薄膜片状片状聚集在一起或聚集在一起。研究结果表明，磷酸化牙科粘结剂中的磷酸和磷酸基团的存在促进了羟基磷灰石晶体在其表面的形核和生长。
The aim of the present study was to study the mineral formation on a phosphorylated dental bonding agent using a mineralization inductive solution. Clearfil Photobond, which contained phosphate monomer, was cured by photo-irradiation and heat treated, and was then immersed in Hanks' balanced salt solution (HBSS) with pH = 7.4 for 1, 3, 5, 7, 14, and 28 days at 37 degreesC. The white substances were deposited on the phosphorylated polymer, i.e. cured Photobond disk, after the immersion in HBSS. The white substances become visible after 3 days immersion. After 7 days immersion, surface of the phosphorylated polymer disk was almost covered with white substance layers. The measurement of white substances by means of X-ray diffraction, Fourier-transform infrared and electron probe microanalysis revealed that their main component was carbonate-containing hydroxyapatite. Scanning electron microscopy pictures showed that a large number of globules of hydroxyapatite were fused together, and that each globule was composed of a group of numerous thin-film form flakes uniting and/or clustering together. The results obtained in this study concluded that the presence of phosphonic acid and phosphate group of phosphorylated dental bonding agent enhanced the nucleation and growth of hydroxyapatite crystals on its surface.