Cytotoxicity of Reparative Endodontic Cements on Human Periodontal Ligament Stem Cells

Marlus da Silva  Pedrosa; Tomaz  Alves; Juliana Garuba  Rahhal; Fernando Neves  Nogueira; Carla Renata  Sipert

Authors

Marlus da Silva Pedrosa
Tomaz Alves
Juliana Garuba Rahhal
Fernando Neves Nogueira
Carla Renata Sipert

Keywords:

Endodontics, Dental Cements, Periodontal Ligament, Cytotoxicity Tests, Immunologic

Abstract

Objective: To compare the cytotoxicity of commercial reparative endodontic cements on human periodontal ligament stem cells (hPDLSCs). Material and Methods: The culture of hPDLSCs was established. Cell density was set at 2 × 10⁴ cells/well in 96-well plates. Extracts of Biodentine, Bio-C Repair, Cimmo HD, MTA Repair HP and White MTA were prepared. Then, the extracts were diluted (pure, 1:4 and 1:16) and inserted into cell-seeded wells for 24, 48, and 72 h to assess cell viability through MTT assay. hPDLSCs incubated with culture medium alone served as a negative control group. Data were analyzed by Two-Way ANOVA and Tukey’s test (α=0.05). Results: At 24 h, pure extract of MTA Repair HP and Biodentine 1:16 presented higher cell viability compared to control. Lower cell viability was found for pure extract of Cimmo HD, MTA Repair HP 1:4 and 1:16, and White MTA 1:16. At 48 h, pure extract of Bio-C Repair and MTA Repair HP presented higher cell viability compared to control. At 72 h, only the pure extract of MTA Repair HP led to higher cell proliferation compared to control. Conclusion: Biodentine, Bio-C Repair and MTA Repair HP were able to induce hPDLSCs proliferation. Cimmo HD and White MTA were found to be mostly cytotoxic in hPDLSCs.

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