aMMP-8	Active Matrix Metalloproteinase-8
BOP	Bleeding on Probing
CA	Clear Aligner
CAL	Clinical Attachment Level
ELISA	Enzyme-Linked Immunosorbent Assay
GI	Gingival Index
GCF	Gingival Crevicular Fluid
IL	Interleukin
IL-1β	Interleukin-1 beta
IL-6	Interleukin-6
IL-8	Interleukin-8
MMP-8	Matrix Metalloproteinase-8
PCC	Population–Concept–Context framework
PCR	Polymerase Chain Reaction
PETG	Polyethylene Terephthalate Glycol
PI	Plaque Index
PPD	Probing Pocket Depth
PRISMA-ScR	Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews
TNF-α	Tumor Necrosis Factor alpha