en
Scientific article
English

Influence of composition on setting kinetics of new injectable and/or fast setting tricalcium silicate cements

Published inDental materials, vol. 30, no. 12, p. 1291-1303
Publication date2014-12
First online date2014-10-23
Abstract

Objectives: New commercial tricalcium silicate based cements were elaborated to improve handling properties and setting time. The goals of the present work were: (i) to determine the composition of the new injectable and/or fast setting calcium silicate based cements, and (ii) to investigate the impact of the differences in composition on their setting kinetics.

Methods: The materials considered were Angelus MTA™, Biodentine™, MM-MTA™, MTA-Caps™, and ProRoot MTA™ as control. Elemental composition of materials was studied by Inductively Coupled Plasma-Atomic Emission Spectroscopy and X-ray Energy Dispersive analysis, whereas phases in presence were analyzed by Micro-Raman spectroscopy and X-ray Diffraction analysis and cement surface by Scanning Electron Microscope. Setting kinetics was evaluated using rheometry.

Results: Elemental analysis revealed, for all cements, the presence of three major components: calcium, silicon and oxygen. Chlorine was detected in MM-MTA, MTA-Caps and Biodentine. Different radio-opacifiers were identified: bismuth oxide in ProRoot MTA, Angelus MTA and MM-MTA, zirconium oxide in Biodentine and calcium tungstate (CaWO4) in MTA-Caps. All cements were composed of di- and tri-calcium silicate, except Biodentine for which only the latter was detected. Major differences in setting kinetics were observed: a modulus of 8×10(8)Pa is reached after 12min for Biodentine, 150min for MM-MTA, 230min for Angelus MTA and 320min for ProRoot MTA. The maximum modulus reached by MTA-Caps was 7×10(8)Pa after 150min.

Significance: Even if these cements possess some common compounds, major differences in their composition were observed between them, which directly influence their setting kinetics.

eng
Keywords
  • Biodentine
  • EDX
  • Mineral trioxide aggregate
  • Raman
  • Rheometry
  • SEM
  • Setting kinetics
  • Tricalcium silicate cements
  • XRD
  • Aluminum Compounds / chemistry
  • Bismuth / chemistry
  • Calcium / analysis
  • Calcium Compounds / analysis
  • Calcium Compounds / chemistry
  • Chlorine / analysis
  • Dental Cements / chemistry
  • Drug Combinations
  • Elastic Modulus
  • Materials Testing
  • Microscopy, Electron, Scanning
  • Microspectrophotometry
  • Oxides / chemistry
  • Oxygen / analysis
  • Rheology
  • Silicate Cement / chemistry
  • Silicates / chemistry
  • Silicon / analysis
  • Spectrometry, X-Ray Emission
  • Spectrophotometry, Atomic
  • Spectrum Analysis, Raman
  • Surface Properties
  • Time Factors
  • Tungsten Compounds / analysis
  • X-Ray Diffraction
  • Zirconium / analysis
Affiliation Not a UNIGE publication
Citation (ISO format)
SETBON, H M et al. Influence of composition on setting kinetics of new injectable and/or fast setting tricalcium silicate cements. In: Dental materials, 2014, vol. 30, n° 12, p. 1291–1303. doi: 10.1016/j.dental.2014.09.005
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal0109-5641
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