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Microstructure and chemical analysis of blood-contaminated mineral trioxide aggregate

M H Nekoofar1, T E Davies, D Stone

  • 1Endodontology Research Group, School of Dentistry, Cardiff University, Cardiff, UK. nekoofarmh@cardiff.ac.uk

International Endodontic Journal
|July 2, 2011
PubMed
Abstract

Insights

Blood contamination negatively impacts Mineral Trioxide Aggregate (MTA) by hindering the formation of calcium hydroxide during early hydration. This affects MTA's chemical properties and microstructure.

Area of Science:

  • Dental Materials Science
  • Biomaterials Chemistry

Background:

  • Mineral Trioxide Aggregate (MTA) is a widely used dental material.
  • Understanding factors affecting MTA's properties is crucial for clinical success.

Purpose of the Study:

  • To investigate the detrimental effects of blood contamination on the chemical properties of Mineral Trioxide Aggregate (MTA).

Main Methods:

  • Scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDX) were used to assess microstructure and elemental chemistry.
  • X-ray diffraction analysis (XRD) evaluated phase compositions of contaminated and uncontaminated MTA.

Main Results:

  • Blood contamination altered the hydration state of MTA specimens.
  • Ettringite crystal formation was absent in blood-contaminated MTA.
  • Calcium hydroxide formation was inhibited in MTA mixed with blood.

Conclusions:

  • Blood contamination significantly interferes with the early hydration process of MTA.
  • The absence of calcium hydroxide formation indicates altered chemical properties of contaminated MTA.

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