IIP	Immediate implant placement
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROSPERO	International Prospective Register of Systematic Reviews
NIHR	National Institute for Health Research
CRD	Centre for Reviews and Dissemination
RCT	Randomized Controlled Trial
GBR	Guided Bone Regeneration
MeSH	Medical Subject Headings
PES	Pink esthetic score
RoB 2	Revised Cochrane Risk-of-bias Tool for Randomized Trials
NOS	Newcastle Ottawa Scale
BBT	Buccal bone thickness
DBBM	Deproteinized bovine bone mineral
PRP	Platelet-Rich Plasma
PRF	Platelet-Rich Fibrin
CTG	Connective tissue graft