Failure of Setting of Mineral Trioxide Aggregate in the Presence of Fetal Bovine Serum and Its Prevention

被引:21
作者
Kim, Yuran [1 ]
Kim, Sinyoung [2 ]
Shin, Yoo Seok [1 ]
Jung, Il-Young [1 ]
Lee, Seung Jong [1 ]
机构
[1] Yonsei Univ, Coll Dent, Dept Conservat Dent, Seoul 120752, South Korea
[2] Seoul St Marys Hosp, Dept Dent, Seoul, South Korea
关键词
Calcium chloride; fetal bovine serum; microhardness; mineral trioxide aggregates; setting time; WHITE PORTLAND-CEMENT; END FILLING MATERIALS; BLOOD CONTAMINATION; SURFACE MICROSTRUCTURE; CLINICAL-APPLICATIONS; PHYSICAL-PROPERTIES; CALCIUM-CHLORIDE; SEALING ABILITY; PH; BIOCOMPATIBILITY;
D O I
10.1016/j.joen.2011.12.005
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Introduction: The purpose of this study was to examine the effect of fetal bovine serum (FBS) on the setting of 2 white mineral trioxide aggregates (MTAs) and to determine if calcium chloride (CaCl2) alters the setting behavior of both MTAs under this condition. Methods: Two types of MTA cements (ProRoot MTA [Dentsply Tulsa Dental, Tulsa, OK] and MTA-Angelus [Angelus Dental Solutions, Londrina, Brazil]) were mixed with either distilled water (DW) or 10% CaCl2 solution. Mixed MTA was placed in a polyethylene mold, and each mold was then placed in saline or FBS-soaked Oasis. After storing for 4 days, the MTA samples were removed from the molds, and the microhardness was independently measured at 3 different levels: 0.5 mm, 2 mm, and 4 mm away from the bottom in contact with the immersion solution. Results: None of the samples mixed with DW and exposed to FBS for 4 days had set at the 0.5-mm and 2-mm levels. CaCl2 was effective in reducing (the 0.5-mm level) or eliminating (the 2- and 4-mm levels) the adverse effect of FBS. The groups with short-term exposure to FBS had the same surface microhardness as the groups stored in saline-soaked Oasis. Conclusions: MTA did not set when the mixed MTA was exposed to FBS for 4 days. In these cases, 10% CaCl2 helped the setting of MTA, and the effect was more pronounced in ProRoot MTA than in MTA-Angelus. In contrast, short-term exposure to FBS had minimal or no detrimental effects on the setting behaviors of both MTAs. (J Endod 2012;38:536-540)
引用
收藏
页码:536 / 540
页数:5
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