Objective:To investigate the differences in the proliferation and apoptosis of human gingival fibroblasts(HGFs)between patients with chronic periodontitis and healthy people and provide experimental evidence for the susceptibility of chronic periodontitis.Methods:HGFs were obtained from patients with chronic periodontitis and healthy people and cultured in vitro.Cell activity between two groups was detected by MTT assay.Real-time PCR was used to detect the expression levels of anti-apoptotic gene Bcl-2and p...