| Literature DB >> 18436041 |
Tsui-Hsien Huang1, Ming-You Shie, Chia-Tze Kao, Shinn-Jyh Ding.
Abstract
The purpose of this study was to investigate the effect of a sodium phosphate dibasic (Na2HPO4) setting accelerator on the properties of white-colored mineral trioxide aggregate (WMTA). Setting times were measured by using a Gilmore needle. Changes in the pH value, diametral tensile strength, and phase composition of WMTA were evaluated. By using a 15% Na2HPO4 solution as a liquid phase mixed with WMTA, the setting time was significantly reduced to 26 minutes rather than the usual 3 hours. The 15% Na2HPO4 promoted WMTA to achieve a maximum diametral tensile strength of 4.9 MPa at an initial 6-hour aging time and 1 MPa for the cement mixed with water. The pH value of the 15% Na2HPO4-mixed cement was changed from an initial 11.0 to a high of 13.2, which was similar to the results using water. The results suggest that the Na2HPO4 solution may be an effective setting accelerator for WMTA.Entities:
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Year: 2008 PMID： 18436041 DOI： 10.1016/j.joen.2008.02.002
Source DB: PubMed Journal: J Endod ISSN： 0099-2399 Impact factor: 4.171