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X‐ray diffraction analysis of mineral trioxide aggregate and Portland cement
Author(s) -
Islam I.,
Chng H. K.,
Yap A. U. J.
Publication year - 2006
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/j.1365-2591.2006.01077.x
Subject(s) - mineral trioxide aggregate , portland cement , materials science , cement , calcium silicate , mineralogy , composite material , dentistry , chemistry , medicine
Aim To compare the major constituents present in ProRoot mineral trioxide aggregate (MTA), ProRoot MTA (tooth coloured formula), ordinary Portland cement and white Portland cement using powder X‐ray diffractometery. Methodology X‐ray diffractometery of the four materials was carried out with the divergence and scatter slits set at 1° and the receiving slit at 0.10 mm. The scan range was set at 5–70° and continuous scans for the θ –2 θ range were run with a scan speed of 2° min −1 . The patterns obtained were then compared with the Powder Diffraction Files (PDF) found in the International Centre for Diffraction Data database. The three strongest peaks were used for the identification of the constituents. The relative intensities were plotted against the angle 2 θ and compared with the plots in the PDF. Results The main constituents were found to be tricalcium silicate, tricalcium aluminate, calcium silicate, and tetracalcium aluminoferrite in all the four cements with the additional presence of Bi 2 O 3 in ProRoot MTA and ProRoot MTA (tooth coloured formula). Conclusions The four cements had similar major constituents. Data on Portland cement may be used for the further development or modification of ProRoot MTA in order to improve its physical characteristics and expand its scope of clinical applications.