Table 1.

Dohan- Ehrenfest PRP classification.

Preparation	Acronym	Leukocytes	Fibrin Density
Pure platelet rich plasma	P-PRP	Poor	Low
Leukocyte and platelet rich plasma	L-PRP	Rich	Low
Pure platelet rich fibrin	P-PRF	Poor	High
Leukocyte and platelet rich fibrin	L-PRF	Rich	High