PD	Periodontal disease
HC	Healthy control
IL	Interleukin
TNF	Tumor necrosis factor
IFN	Interferon
Th	T helper
TGF	Transforming growth factor
MMP	Matrix metalloproteinase
CAL	Clinical attachment loss
CEJ	Cementoenamel junction
FMPS	Full-mouth plaque score
FMBS	Full-mouth bleeding score
IQR	Interquartile range
ECM	Extracellular matrix
NLRPL3	Nod-like receptor leucine-rich repeat protein 3
VDR	Vitamin D receptor
GCF	Gingival crevicular fluid
Treg	T regulatory cell