Physicochemical properties of calcium silicate cements for endodontic treatment.
BACKGROUND
The purpose of this study was to examine the physicochemical properties of novel calcium silicate cements (CSCs) prepared by using a sol-gel method.


METHODS
The compressive strength, morphology, and phase composition of various cements were evaluated after mixing with water, in addition to setting time and pH value.


RESULTS
As solid phases, the sol-gel-derived powders mainly consisted of beta-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.


CONCLUSIONS
CSCs display advantageously shortened setting times and might have potential for endodontic use, although further tests are necessary to confirm this.
Chen
Chun-Cheng
CC
Department of Dentistry, Chung-Shan Medical University, Taichung, Taiwan, Republic of China.
Ho
Chia-Che
CC
David Chen
Chan-Hen
CH
Ding
Shinn-Jyh
SJ
D017610:Calcium Compounds / Q000737:chemistry; D055598:Chemical Phenomena; D019245:Compressive Strength; D018360:Crystallography, X-Ray; D003799:Dental Stress Analysis; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D044367:Phase Transition; D012387:Root Canal Filling Materials / Q000138:chemical synthesis / Q000737:chemistry; D012823:Silicate Cement / Q000138:chemical synthesis / Q000737:chemistry; D017640:Silicates / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors
D017610:Calcium Compounds; D012387:Root Canal Filling Materials; D017640:Silicates; D012823:Silicate Cement; C031293:calcium silicate