Figure 2. Viability of dental pulp stem cells (DPSCs) treated with different Extracts. Trypan bBue assay showed S. aromaticum had no toxic effect on the cells. C. zeylanicum and S. triloba reduced cell viability after 10 μg/mL. Increased concentration reduced the cell number in S. aromaticum and C. zeylanicum in a negative strong correlation.
