Physicochemical Properties of Calcium Silicate Cements for Endodontic Treatment

• Published in: Journal of endodontics Vol. 35; no. 9; pp. 1288 - 1291
• Main Authors: Chen, Chun-Cheng, Ho, Chia-Che, David Chen, Chan-Hen, Ding, Shinn-Jyh
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.09.2009
• Subjects: Calcium Compounds - chemistry; Calcium silicate; Chemical Phenomena; Compressive Strength; Crystallography, X-Ray; Dental Stress Analysis; Dentistry; Endocrinology & Metabolism; Hydrogen-Ion Concentration; Materials Testing; mineral trioxide aggregate; Phase Transition; Portland cement; Root Canal Filling Materials - chemical synthesis; Root Canal Filling Materials - chemistry; root-canal filling material; Silicate Cement - chemical synthesis; Silicate Cement - chemistry; Silicates - chemistry; Spectroscopy, Fourier Transform Infrared; Time Factors; mineral trioxide aggregate; root-canal filling material; Portland cement; Calcium silicate
• ISSN: 0099-2399; 1878-3554; 1878-3554
• DOI: 10.1016/j.joen.2009.05.036

The purpose of this study was to examine the physicochemical properties of novel calcium silicate cements (CSCs) prepared by using a sol-gel method. The compressive strength, morphology, and phase composition of various cements were evaluated after mixing with water, in addition to setting time and pH value. As solid phases, the sol-gel–derived powders mainly consisted of β-dicalcium silicate. Setting times for cements mixed with water ranged from 12–42 minutes and were lower for cements with higher starting CaO content. The compressive strength of the CSCs ranged from 0.3–15.2 MPa; these values were significantly different ( P < .05). Calcium silicate hydrate (C − S−H) was the principal phase that formed in the hydration process. The CSCs' pH values changed from an initial 11 to a high of 13. CSCs display advantageously shortened setting times and might have potential for endodontic use, although further tests are necessary to confirm this.