The effect of setting accelerator on properties of mineral trioxide aggregate.

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题名:	The effect of setting accelerator on properties of mineral trioxide aggregate.
作者:	Huang, TH Shie, MY Kao, CT Ding, SJ
贡献者:	中山醫學大學
日期:	2008
上传时间:	2015-07-10T09:30:25Z (UTC)
ISSN:	0099-2399
摘要:	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.
URI:	https://ir.csmu.edu.tw:8080/ir/handle/310902500/11149 http://dx.doi.org/10.1016/j.joen.2008.02.002
關聯:	J Endod. 2008 May;34(5):590-3.
显示于类别:	[牙醫學系暨碩士班] 期刊論文

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