Journal of Endodontics
Volume 31, Issue 2 , Pages 101-103, February 2005

Chemical Differences Between White and Gray Mineral Trioxide Aggregate

Dr. Asgary and Dr. Eghbal are affiliated with the Endodontic Department, Shahid Beheshti Dental School, Tehran, Iran. Dr. Parirokh is associated with the Endodontic Department, Kerman Dental School, Kerman, Iran. Frank Brink is associated with the Electron Microscope Unit, Research School of Biological Sciences, ANU, Canberra, Australia.

Abstract 

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.

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 Address requests for reprints to Dr. Masoud Parirokh, Department of Endodontics, School of Dentistry, Kerman University of Medical Sciences, Shafa Avenue, Jomhory Boulevard, Kerman, Iran. e-mail: masoudparirokh@yahoo.com

PII: S0099-2399(05)60029-5

doi:10.1097/01.DON.0000133156.85164.B2

Journal of Endodontics
Volume 31, Issue 2 , Pages 101-103, February 2005

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