title: Chemical and morphological characteristics of mineral trioxide aggregate and Portland cements.
abstract: The purpose of this study was to investigate the chemical composition and particle morphology of white mineral trioxide aggregate (WMTA) and two white Portland cements (CEM 1 and CEM 2). Compositional analysis was performed by energy dispersive X-ray spectroscopy, X-ray fluorescence spectrometry and X-ray diffraction whereas, morphological characteristics were analyzed by scanning electron microscope and Laser scattering particle size distribution analyzer. The elemental composition of WMTA, CEM 1 and CEM 2 were similar except for the presence of higher amounts of bismuth in WMTA. Calcium oxide and silicon oxide constitute the major portion of the three materials whereas, tricalcium silicate was detected as the major mineral phase. The particle size distribution and morphology of WMTA was finer compared to CEM 1 and CEM 2. The three tested materials had relatively similar chemical composition and irregular particle morphologies.
authors.affiliation: Department of Dental Materials, Army Medical College, National University of Sciences and Technology.
authors.forename: Shahbaz
authors.initials: S
authors.lastname: Khan
authors.forename: Muhammad
authors.initials: M
authors.lastname: Kaleem
authors.forename: Muhammad Amber
authors.initials: MA
authors.lastname: Fareed
authors.forename: Amir
authors.initials: A
authors.lastname: Habib
authors.forename: Kefi
authors.initials: K
authors.lastname: Iqbal
authors.forename: Ayesha
authors.initials: A
authors.lastname: Aslam
authors.forename: Shahab
authors.initials: S
authors.lastname: Ud Din
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D001729:Bismuth / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry*; D003738:Dental Cements / Q000737:chemistry*; D004338:Drug Combinations; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D017640:Silicates / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D013499:Surface Properties; D014961:X-Ray Diffraction
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003738:Dental Cements; D004338:Drug Combinations; D010087:Oxides; D017640:Silicates; C086631:mineral trioxide aggregate; C506393:tricalcium silicate; C016538:lime; D001729:Bismuth; D012825:Silicon