cDNA	Complementary DNA
CFU	Colony forming unit
CGA	Chlorogenic acid
DMEM	Dulbecco’s modified eagle’s medium
ELISA	Enzyme-linked immunosorbent assay
FBS	Fetal bovine serum
GAM	Gifu anerobic medium
HGF	Human gingival fibroblast
HPDL	Human periodontal ligament fibroblast
IL	Interleukin
LPS	Lipopolysaccharide
TSB	Tryptic soy broth