Experimental calcium silicate-based cement with and without zirconium oxide modulates fibroblasts viability

Camila Slompo, Camila Peres-Buzalaf, Kellen Cristina da Silva Gasque, Carla Andreotti Damante, Ronald Ordinola-Zapata, Marco Antonio Hungaro Duarte, Rodrigo Cardoso de Oliveira

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The aim of this study was to verify whether the use of zirconium oxide as a radiopacifier of an experimental calcium silicate-based cement (WPCZO) leads to cytotoxicity. Fibroblasts were treated with different concentrations (10 mg/mL, 1 mg/mL, and 0.1 mg/mL) of the cements diluted in Dulbecco’s modified Eagle’s medium (DMEM) for periods of 12, 24, and 48 h. Groups tested were white Portland cement (WPC), white Portland cement with zirconium oxide (WPCZO), and white mineral trioxide aggregate Angelus (MTA). Control group cells were not treated. The cytotoxicity was evaluated through mitochondrial-activity (MTT) and cell-density (crystal violet) assays. All cements showed low cytotoxicity. In general, at the concentration of 10 mg/mL there was an increase in viability of those groups treated with WPC and WPCZO when compared to the control group (p<0.05). A similar profile for the absorbance values was noted among the groups: 10 mg/mL presented an increase in viability compared to the control group. On the other hand, smaller concentrations presented a similar or lower viability compared to the control group, in general. A new dental material composed of calcium silicate-based cement with 20% zirconium oxide as the radiopacifier showed low cytotoxicity as a promising material to be exploited for root-end filling.

Original languageEnglish (US)
Pages (from-to)587-591
Number of pages5
JournalBrazilian Dental Journal
Issue number6
StatePublished - Nov 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015, Associacao Brasileira de Divulgacao Cientifica. All rights reserved.


  • Cell viability
  • Fibroblasts
  • MTA
  • Zirconium oxide


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