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Cytotoxicity of modified glass ionomer cement on odontoblast cells

  • Biocompatibility Studies
  • Original Research
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Abstract

Recently a modified glass ionomer cement (GIC) with enhanced bioactivity due to the incorporation of wollastonite or mineral trioxide aggregate (MTA) has been reported. The aim of this study was to evaluate the cytotoxic effect of the modified GIC on odontoblast-like cells. The cytotoxicity of a conventional GIC, wollastonite modified GIC (W-mGIC), MTA modified GIC (M-mGIC) and MTA cement has been evaluated using cement extracts, a culture media modified by the cement. Ion concentration and pH of each material in the culture media were measured and correlated to the results of the cytotoxicity study. Among the four groups, conventional GIC showed the most cytotoxicity effect, followed by W-mGIC and M-mGIC. MTA showed the least toxic effect. GIC showed the lowest pH (6.36) while MTA showed the highest (8.62). In terms of ion concentration, MTA showed the largest Ca2+ concentration (467.3 mg/L) while GIC showed the highest concentration of Si4+ (19.9 mg/L), Al3+ (7.2 mg/L) and Sr2+ (100.3 mg/L). Concentration of F− was under the detection limit (0.02 mg/L) for all samples. However the concentrations of these ions are considered too low to be toxic. Our study showed that the cytotoxicity of conventional GIC can be moderated by incorporating calcium silicate based ceramics. The modified GIC might be promising as novel dental restorative cements.

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Acknowledgments

We gratefully acknowledge support from VR (Swedish Research Council (2013-5419 and 2011-3399) and CSC (China Scholarship Council). GM thanks Marie Curie Actions FP7-PEOPLE-2011-COFUND (GROWTH 291795) for funding via the VINNOVA program Mobility for Growth and Lars Hiertas Minne Foundation (Project No. FO2014-0334).

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    Authors and Affiliations

    1. Ångström Laboratory, Department of Engineering Science, Applied Materials Science, Uppsala University, Box 534, 75121, Uppsala, Sweden

      Song Chen, Gemma Mestres, Weihua Lan, Wei Xia & Håkan Engqvist

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    1. Song Chen
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    2. Gemma Mestres
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    3. Weihua Lan
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    Correspondence to Wei Xia.

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    Song Chen and Gemma Mestres have contributed equally to this work.

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    Chen, S., Mestres, G., Lan, W. et al. Cytotoxicity of modified glass ionomer cement on odontoblast cells. J Mater Sci: Mater Med 27, 116 (2016). https://doi.org/10.1007/s10856-016-5729-y

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