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Failure of setting of mineral trioxide aggregate in the presence of fetal bovine serum and its prevention

 Yuran Kim  ;  Sinyoung Kim  ;  Yoo Seok Shin  ;  Il-Young Jung  ;  Seung Jong Lee 
 JOURNAL OF ENDODONTICS, Vol.38(4) : 536-540, 2012 
Journal Title
Issue Date
Algorithms ; Aluminum Compounds/chemistry* ; Animals ; Bismuth/chemistry ; Calcium Chloride/chemistry ; Calcium Compounds/chemistry* ; Cattle ; Dental Cements/chemistry ; Drug Combinations ; Hardness ; Humidity ; Materials Testing ; Oxides/chemistry* ; Pyrroles/chemistry ; Root Canal Filling Materials/chemistry* ; Serum/chemistry* ; Silicates/chemistry* ; Sodium Chloride/chemistry ; Surface Properties ; Temperature ; Time Factors ; Vinyl Compounds/chemistry ; Water/chemistry
Calcium chloride ; fetal bovine serum ; microhardness ; mineral trioxide aggregates ; setting time
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 (CaCl(2)) 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% CaCl(2) 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. CaCl(2) 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% CaCl(2) 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.
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2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Shin, Yoo Seok(신유석) ORCID logo https://orcid.org/0000-0003-1121-2570
Lee, Seung Jong(이승종)
Jung, Il Young(정일영) ORCID logo https://orcid.org/0000-0001-8972-2664
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