Table 2.

Excluded articles and reason for exclusion

References	Reason for exclusion
Gayathri Devi [22]	Using L-PRF in combination with other materials
Karagah et al. [23]	Comparing L-PRF with FDBA
Pirpir et al. [24]	Using concentrated growth factor (CGF)
Angelo et al. [25]	Using A-PRF
Marenzi et al. [26]	Using (L-PRF) in the healing of simple postextraction sockets
Toffler et al. [27]	Did not contain ISQ measurement
Simonpieri et al. [28]	Not an RCT nor a CCT
Marrelli and Tatullo [29]	Retrospective study
Boora et al. [6]	PRF in peri-implant tissues
Hehn et al. [30]	PRF in peri-implant tissues
Temmerman et al. [31]	PRF in peri-implant tissues
Khan et al. [32]	PRF in peri-implant tissues
Öncü et al. [33]	Animal study
Tajima et al. [34]	PRF in sinus augmentation preceding the implant placement