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A Comparative Study Of White Mineral Trioxide Aggregate And White Portland Cements Using X‐ray Microanalysis
Author(s) -
Asgary Saeed,
Parirokh Masoud,
Eghbal Mohammed Jafar,
Brink Frank
Publication year - 2004
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/j.1747-4477.2004.tb00416.x
Subject(s) - microanalysis , electron microprobe , materials science , mineral trioxide aggregate , scanning electron microscope , mineralogy , bismuth , spinel , nuclear chemistry , metallurgy , chemistry , composite material , dentistry , medicine , organic chemistry
The purpose of this study was to determine and compare the composition of white mineral trioxide aggregate (WMTA) and two different white Portland cements (WPCs). Samples of WMTA and WPCs were prepared and then imaged in a JEOL JSM6400 scanning electron microscope, equipped with an Oxford Instruments light element energy dispersive spectrometer detector for determining the elemental composition. Electron probe microanalysis (EPMA) results indicated that lime (CaO) and silica (SiO 2 ) were the dominant compounds in each case. The results showed that the trace elements are similar in all of the samples but there was no detectable trace of bismuth oxide (Bi 2 O 3 ) in WPCs. The range of crystal sizes observed in WMTA was found to be distinctly smaller than those observed in the WPCs. It was concluded that there is no significant difference between the dominant compounds in both WMTA and WPCs except the presence of bismuth oxide in WMTA.