白色与灰色矿物三氧化物聚合体之间的化学差异。
Chemical differences between white and gray mineral trioxide aggregate.
作者信息
Asgary Saeed, Parirokh Masoud, Eghbal Mohammad Jafar, Brink Frank
机构信息
Endodontic Department, Shahid Beheshti Dental School, Tehran, Iran.
出版信息
J Endod. 2005 Feb;31(2):101-3. doi: 10.1097/01.don.0000133156.85164.b2.
The purpose of this research was to determine and compare the composition of white mineral trioxide aggregate and gray mineral trioxide aggregate. Electron probe microanalysis results indicated that lime (CaO), silica (SiO2), and bismuth oxide (Bi2O3) were the dominant compounds in each case and were present at comparable levels in either of the types of mineral trioxide aggregate analyzed. It was concluded that the most significant differences observed were between the measured concentrations of Al2O3 (+122%), MgO (+130%), and especially FeO (+1000%) when gray mineral trioxide aggregate was compared with white mineral trioxide aggregate.
本研究的目的是测定并比较白色三氧化矿物聚合体和灰色三氧化矿物聚合体的成分。电子探针微量分析结果表明，氧化钙（CaO）、二氧化硅（SiO2）和氧化铋（Bi2O3）在每种情况下都是主要化合物，在所分析的两种类型的三氧化矿物聚合体中含量相当。得出的结论是，当比较灰色三氧化矿物聚合体和白色三氧化矿物聚合体时，观察到的最显著差异在于三氧化二铝（+122%）、氧化镁（+130%），尤其是氧化亚铁（+1000%）的测量浓度之间。
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