Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (12): 2195-2197.doi: 10.3969/j.issn.1673-8225.2010.12.026

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Performance of domestic mineral trioxide aggregate

Li Xiao-xia1, Tang Ming1, Deng Xu-liang2, Yang Xiao-ping3, Zheng Jun-yuan1   

  1. 1 Department of Slomatology, First Affiliated Hospital, Chongqing Medical University, Chongqing   400016, China; 2 School of Stomatology, Peking University, Beijing   100081, China; 3 Key Laboratory of Beijing Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing   100029, China
  • Online:2010-03-19 Published:2010-03-19
  • Contact: Tang Ming, Master, Associate professor, Department of Slomatology, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China doctor-mt@hotmail.com
  • About author:Li Xiao-xia, Studying for master’s degree, Department of Slomatology, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China lixiaoxia0312@163.com

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Abstract:

BACKGROUND: Since its inception in 1998 in the United States, mineral trioxide aggregate (MTA) showed obvious superiority compared to other materials, but the current domestic MTA entirely dependent on imports. There is no relevant alternative products come out, therefore, domestic MTA is necessary.
OBJECTIVE: To research the performance of domestic MTA.
METHODS: The domestic MTA was prepared using ball-milling mixing and sintering method and its performance was studied by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF).
RESULTS AND CONCLUSION: SEM showed domestic MTA had many gaps, uneven shape, and large granules dispersed among small granules. XRD demonstrated that 3CaO•SiO2, Bi2O3 and 2CaO•SiO2 were main components. XRF revealed that main components of domestic MTA were bismuth oxide 18.169 52%, tricalcium silicate 60.857 32%, dicalcium silicate 19.703 31%, tricalcium aluminate 0.756 56% and 4CaO•Al2O3•Fe2O3 1.764 1%. Results showed that the ingredients of domestic MTA using ball-milling mixing and sintering method are similar to the imported materials.

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