Figure 5.

Results of XTT (2,3-bis (2-methoxy-4-nitro-5-sulfopheny)-2 Htetrazolium-5-carboxyanilide inner salt), NR (neutral red) and CVDE (crystal violet dye elution) cytotoxicity assays on HPDL fibroblasts exposed to PC, PC 2%, PC 5%, PC 10%, PC 15% and MTA. Culture media were used as negative control and 0.1% SDS as positive control. Note that cell viability was greater than 70% for all the tested materials as required by the International Standardization Organization (ISO) (dashed line) in all three assay parameters

*: significantly different from all groups