Abbreviation	Definition
CHX	Chlorhexidine
CAL	Clinical attachment level
DGCS	Desquamative gingivitis clinical score
F	Female
FGG	Free gingival graft
GI	Gingival index (Löe and Silness)
IL-1β	Interleukin-1 beta
IL-6	Interleukin-6
LDD	Local drug delivery
M	Male
MRONJ	Medication-related osteonecrosis of the jaw
NBF	Nano-bio fusion (nano-emulsion formulation containing vitamin C, vitamin E, and propolis)
NSPT	Non-surgical periodontal therapy
OHIP-14	Oral health impact profile-14
OHRQoL	Oral health-related quality of life
OLP	Oral lichen planus
PBI	Papillary bleeding index
PPD	Periodontal probing depth
PI	Plaque index
PEG-1500	Polyethylene glycol 1500
QoL	Quality of life
RCT	Randomized controlled trial
ROS	Reactive oxygen species
SRP	Scaling and root planing
TNF-α	Tumor necrosis factor-alpha
WHO	World health organization