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Dent Mater. 2013 Feb;29(2):e20-8. doi: 10.1016/j.dental.2012.11.007. Epub 2012 Nov 27.

Investigation of the physical properties of tricalcium silicate cement-based root-end filling materials.

Author information

1
Department of Metallurgy and Materials Engineering, Faculty of Engineering, University of Malta, Msida, Malta.

Abstract

OBJECTIVE:

Tricalcium silicate-based cements have been displayed as suitable root-end filling materials. The physical properties of prototype radiopacified tricalcium silicate cement, Bioaggregate and Biodentine were investigated. Intermediate restorative material was used as a control.

METHODS:

The physical properties of a prototype zirconium oxide replaced tricalcium silicate cement and two proprietary cements composed of tricalcium silicate namely Bioaggregate and Biodentine were investigated. Intermediate restorative material (IRM) was used as a control. Radiopacity assessment was undertaken and expressed in thickness of aluminum. In addition the anti-washout resistance was investigated using a novel basket-drop method and the fluid uptake, sorption and solubility were investigated using a gravimetric method. The setting time was assessed using an indentation technique and compressive strength and micro-hardness of the test materials were investigated. All the testing was performed with the test materials immersed in Hank's balanced salt solution.

RESULTS:

All the materials tested had a radiopacity value higher than 3mm thickness of aluminum. IRM exhibited the highest radiopacity. Biodentine demonstrated a high washout, low fluid uptake and sorption values, low setting time and superior mechanical properties. The fluid uptake and setting time was the highest for Bioaggregate.

SIGNIFICANCE:

The addition of admixtures to tricalcium silicate-based cements affects the physical properties of the materials.

PMID:
23199808
DOI:
10.1016/j.dental.2012.11.007
[Indexed for MEDLINE]

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