AECG	American–European Consensus Group
Anti-SSA	anti-Sjögren’s syndrome-related antigen A autobodies
BAFF	B-cell activating factor
BOP	bleeding on probing index
CAL	Gingival clinical attachment loss
CASP	Caspase
DMFT	Decayed, missing, and filled teeth
EULAR	Sjögren’s syndrome patient reported index
FFA	Free fatty acids
GCF	Gingival crevicular fluid
GI	Gingival index
HLA	Human leukocite antigen
IFN	Interferon
IL	Interleukin
MMP	Matrix-metalloproteinases
NSPT	Non-surgical periodontal therapy
PCNA	Proliferative activity of cell nuclear antigen
PICO	Population Intervention Comparison Outcome
PLQ	Dental plaque index
PPD	Periodontal pocket depth
PRISMA	Preferred Reporting Items for Systematic Review and Meta-Analyses
pSS	Primary Sjögren’s syndrome
RA	Rheumatoid arthritis
SS	Sjögren’s syndrome
sSS	Secondary Sjögren’s syndrome
TGF	Tumor growth factor
TNF	Tumor necrosis factor