title: Chemical differences between white and gray mineral trioxide aggregate.
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.
authors.affiliation: Endodontic Department, Shahid Beheshti Dental School, Tehran, Iran.
authors.forename: Saeed
authors.initials: S
authors.lastname: Asgary
authors.forename: Masoud
authors.initials: M
authors.lastname: Parirokh
authors.forename: Mohammad Jafar
authors.initials: MJ
authors.lastname: Eghbal
authors.forename: Frank
authors.initials: F
authors.lastname: Brink
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D000537:Aluminum Oxide / Q000032:analysis; D001729:Bismuth / Q000032:analysis; D017610:Calcium Compounds / Q000032:analysis / Q000737:chemistry*; D004338:Drug Combinations; D004577:Electron Probe Microanalysis; D005290:Ferric Compounds / Q000032:analysis; D008277:Magnesium Oxide / Q000032:analysis; D008855:Microscopy, Electron, Scanning; D010087:Oxides / Q000032:analysis / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D012822:Silicon Dioxide / Q000032:analysis
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D005290:Ferric Compounds; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; C000499:ferric oxide; D008277:Magnesium Oxide; D012822:Silicon Dioxide; C033301:bismuth oxide; C016538:lime; D000537:Aluminum Oxide; D001729:Bismuth