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

• Published in: Dental materials 2013-02, Vol.29 (2), p.e20-e28
• Main Authors: Grech, L, Mallia, B, Camilleri, J
• Format: Article
• Language: English
• Subjects: Advanced Basic Science; Analysis of Variance; Bioaggregate; Biodentine; Calcium Compounds - chemistry; Calcium Compounds - radiation effects; Calcium Hydroxide - chemistry; Calcium Hydroxide - radiation effects; Cements; Dental Cements - chemistry; Dental Cements - radiation effects; Dental materials; Dentistry; Fluid dynamics; Fluid flow; Fluids; Hydroxyapatites - chemistry; Hydroxyapatites - radiation effects; Micro-hardness; Physical properties; Radiopacity; Root Canal Filling Materials - chemistry; Root Canal Filling Materials - radiation effects; Root-end filling materials; Setting time; Silicates - chemistry; Silicates - radiation effects; Tricalcium silicate; Tricalcium silicate cement; Uptakes; Washout resistance
• ISSN: 0109-5641; 1879-0097
• DOI: 10.1016/j.dental.2012.11.007

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 3 mm 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.