AFG	autologous fibrin glue
A-PRF	advanced platelet-rich fibrin
A-PRF+	advanced platelet-rich fibrin plus
BCP	biphasic calcium phosphate
BMPs	bone morphogenic factors
BMP-2	bone morphogenic factor 2
Ca2+	calcium ion
CAL	clinical attachment level
CBCT	cone-beam computed tomography
CGF	concentrated growth factor
CRC	complete root coverage
CRP	C-reactive protein
CTG	connective tissue graft
DBBM	demineralized bovine bone mineral
EMD	enamel matrix derivative
FDBA	freeze-dried bone allografts
FGF	fibroblast growth factor
FGG	free gingival graft
FMBS	full mouth bleeding score
GBT	gingival black triangle
GR	gingival recession
GT	gingival thickness
HEM	hemostatic plug
HGR	horizontal gingival recession
IL-1β	interleukin 1β
IL-4	interleukin IL-4
IL-6	interleukin IL-6
I-PRF	injectable platelet-rich fibrin
ISQ	implant stability quotient
KGW	width of keratinized gingiva
L-PRF	leukocyte–platelet-rich fibrin
micro-CT	micro-computed tomography
MMPs	matrix metalloproteinases
MMP-9	matrix metalloproteinases 9
MRC	percentages of the mean
NSAID	non-steroidal anti-inflammatory drugs
OHIP-14	Oral Health Impact Profile
PD	pocket depth
PDGF	platelet-derived growth factor
PeSPTT	piezotome-enhanced subperiosteal tunnel technique
PICO	population, intervention, comparison, outcome
PRGF	plasma rich in growth factors
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROSPERO	Prospective Register of Systematic Reviews
PRF	platelet-rich fibrin
PRGF	plasma rich in growth factors
PRP	platelet-rich plasma
PST	pin hole surgical technique
RCM	resorbable collagen membrane
RCTs	randomized clinical trials
RET	regenerative endodontic treatment
SACBA	serum albumin-coated bone allograft
T-PRF	titanium platelet-rich fibrin
TGF	transforming growth factor
TNFα	tumor necrosis factor α
TGFα	tumor necrosis factor α
TGFβ	tumor necrosis factor β
VAS	Visual Analog Scale
VEGF	vascular-endothelial growth factor
VGR	vertical gingival recession