aPDT	antimicrobial photodynamic therapy
ARE	antioxidant response elements
BTF	bio-enhanced turmeric formulation
bZIP	zipper protein
CT	chemotherapy
EGF	epidermal growth factor
FDA	food and drug administration
GSH	glutathione
GSH-px	glutathione peroxidase
HO-1	heme oxygenase-1
HNC	head neck cancer
LED	light emitting diodes
Nrf2	nuclear factor erythroid 2 p45-related factor
NRS	numerical pain rating scale
OM	oral mucositis
OMAS	Oral Mucositis Assessment Scale
PBM	photobiomodulation
RIOM	radiation-induced oral mucositis
ROS	reactive oxygen species
RT	radiation therapy
SCC	squamous cell carcinoma
SOD	superoxide dismutase
VAS	visual analogue scale
WHO	world health organization
Zn(II)-curc	zinc-curcumin