A qualitative X-ray analysis of white and grey mineral trioxide aggregate using compositional imaging

Journal of Materials Science. Materials in Medicine
Saeed AsgaryFrank Brink

Abstract

Mineral trioxide aggregate (MTA) is used in endodontics as a filling and sealant material. An earlier commercial formulation Grey MTA (GMTA) was liable to became progressively discoloured, and a whiter version (WMTA) has been introduced for cosmetic reasons. This study compares the composition and particle size distribution of the two formulations using energy dispersive X-ray analysis in a scanning electron microscope. Particle size is smaller in WMTA. X-ray analysis reveals similar major peaks (calcium, silicon and bismuth) but those of the minor elements aluminium, magnesium and particularly iron are considerably less in WMTA, which may account for the colour difference. Neither contains phosphorus, a major constituent of the original formulation.

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Citations

Dec 25, 2008·Journal of Oral Science·Saeed Asgary, Farshid Akbari Kamrani
Feb 3, 2016·Dental Materials Journal·Takashi KomabayashiYohji Imai
Feb 26, 2014·Journal of Endodontics·William N HaLaurence James Walsh
Aug 23, 2008·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Saeed AsgaryHessam Rahimi
May 24, 2008·Journal of Endodontics·Takashi Komabayashi, Larz S W Spångberg
May 23, 2009·International Endodontic Journal·M H NekoofarP M H Dummer
Nov 29, 2007·International Endodontic Journal·M S NamazikhahP M H Dummer
Jan 18, 2008·Journal of Biomedical Materials Research. Part a·Saeed AsgaryMasoud Parirokh
Feb 28, 2013·International Endodontic Journal·J CamilleriD Damidot
Jul 22, 2010·International Endodontic Journal·J CamilleriC Prati
Jul 19, 2012·International Endodontic Journal·N ShokouhinejadP M H Dummer
Dec 3, 2014·Journal of Endodontics·Hui-min ZhouMarkus Haapasalo
Mar 26, 2013·Journal of Endodontics·Daniel Felman, Peter Parashos
Oct 25, 2016·Dental Materials Journal·Mohammad Ali SaghiriNader Sheibani
Jan 30, 2018·International Endodontic Journal·I O de Azevedo QueirozJ E Gomes-Filho
May 21, 2013·Animal Health Research Reviews·Norma P VarelaJeff Wilson
May 21, 2019·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Índia O de Azevedo QueirozJoão E Gomes-Filho
Jan 1, 2015·International Scholarly Research Notices·Roberta Bosso-MarteloMario Tanomaru-Filho
Aug 26, 2020·Restorative Dentistry & Endodontics·Miyoung LimMinju Song

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