مطالعه ميكروسكوپ الكتروني و ميكروآناليز مقايسه اي دو نوع ماده رتروفيل با اشعه X

An Electron Microscopic Study and Comparative Microanalysis of Two Root End Filling Material

Purpose: This study was carried out for comparison of MTA and Root MTA (RMTA) by scanning electron microscope and energy dispersive spectrometer X-ray analysis. Method & Materials: In this research two resin discs were used and in each disc three cavities with three mm depth were prepared. In each disc the cavities were filled with one type of MTA and incubated in 37C for 48 hours. Then, they were polished, carbon coated, observed and analyzed by the scanning electron microscope and the X-ray energy dispersive spectrometer. Results: In both types of the cements results showed that calcium oxide (lime-CaO), silica (SiO2) and bismuth oxide (Bi2O3) were the most component respectively. The amount of minor elements (Al2O3, MgO and FeO) was very lower in RMTA in comparison with MTA. There were some similarity and differences in the amount of trace elements in both types of cements. Conclusion: There is a slit difference between the amounts of major elements in both types of MTA cements, but the amount of minor elements has a significant difference.