Cargando…

The chemical composition of mineral trioxide aggregate

Mineral trioxide aggregate (MTA) is composed of Portland cement, with 4:1 addition of bismuth oxide added so that the material can be detected on a radiograph. The cement is made up of calcium, silicon and aluminium. The main constituent phases are tricalcium and dicalcium silicate and tricalcium al...

Descripción completa

Detalles Bibliográficos
Autor principal: Camilleri, Josette
Formato: Texto
Lenguaje:English
Publicado: Medknow Publications 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2843533/
https://www.ncbi.nlm.nih.gov/pubmed/20351970
http://dx.doi.org/10.4103/0972-0707.48834
_version_ 1782179229128982528
author Camilleri, Josette
author_facet Camilleri, Josette
author_sort Camilleri, Josette
collection PubMed
description Mineral trioxide aggregate (MTA) is composed of Portland cement, with 4:1 addition of bismuth oxide added so that the material can be detected on a radiograph. The cement is made up of calcium, silicon and aluminium. The main constituent phases are tricalcium and dicalcium silicate and tricalcium aluminate. There are two commercial forms of MTA, namely the grey and the white. The difference between the grey and the white materials is the presence of iron in the grey material, which makes up the phase tetracalcium alumino-ferrite. This phase is absent in white MTA. Hydration of MTA occurs in two stages. The initial reaction between tricalcium aluminate and water in the presence of calcium sulphate results in the production of ettringite. Tricalcium and dicalcium silicate react with water to produce calcium silicate hydrate and calcium hydroxide, which is leached out of the cement with time.
format Text
id pubmed-2843533
institution National Center for Biotechnology Information
language English
publishDate 2008
publisher Medknow Publications
record_format MEDLINE/PubMed
spelling pubmed-28435332010-03-26 The chemical composition of mineral trioxide aggregate Camilleri, Josette J Conserv Dent Invited Review Mineral trioxide aggregate (MTA) is composed of Portland cement, with 4:1 addition of bismuth oxide added so that the material can be detected on a radiograph. The cement is made up of calcium, silicon and aluminium. The main constituent phases are tricalcium and dicalcium silicate and tricalcium aluminate. There are two commercial forms of MTA, namely the grey and the white. The difference between the grey and the white materials is the presence of iron in the grey material, which makes up the phase tetracalcium alumino-ferrite. This phase is absent in white MTA. Hydration of MTA occurs in two stages. The initial reaction between tricalcium aluminate and water in the presence of calcium sulphate results in the production of ettringite. Tricalcium and dicalcium silicate react with water to produce calcium silicate hydrate and calcium hydroxide, which is leached out of the cement with time. Medknow Publications 2008 /pmc/articles/PMC2843533/ /pubmed/20351970 http://dx.doi.org/10.4103/0972-0707.48834 Text en ©Journal of Conservative Dentistry http://creativecommons.org/licenses/by/2.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Invited Review
Camilleri, Josette
The chemical composition of mineral trioxide aggregate
title The chemical composition of mineral trioxide aggregate
title_full The chemical composition of mineral trioxide aggregate
title_fullStr The chemical composition of mineral trioxide aggregate
title_full_unstemmed The chemical composition of mineral trioxide aggregate
title_short The chemical composition of mineral trioxide aggregate
title_sort chemical composition of mineral trioxide aggregate
topic Invited Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2843533/
https://www.ncbi.nlm.nih.gov/pubmed/20351970
http://dx.doi.org/10.4103/0972-0707.48834
work_keys_str_mv AT camillerijosette thechemicalcompositionofmineraltrioxideaggregate
AT camillerijosette chemicalcompositionofmineraltrioxideaggregate