Cells, Cultured 3 Fibroblasts 3 Humans 3 Periodontal Ligament 3 Periodontal ligament fibroblasts cell culture 3 cytology 3 fibroblast 3 human 3 periodontal ligament 3 Cell Survival 2 In Vitro Techniques 2 Root Canal Filling Materials 2 Root canal sealer 2 cell survival 2 comparative study 2 drug effect 2 in vitro study 2 root canal filling material 2 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide assay 1 Aluminum Compounds 1 Angiogenin 1 Apoptosis 1 Blotting, Western 1 Calcium Compounds 1 Calcium Hydroxide 1 Cell Line 1 Cell Proliferation 1 Cytokines 1 Cytotoxic 1