Many recent studies have shown the interest and potential of white cells in the inflammatory cascade, as a corollary, a prominent action in the early days of stimulation of osseo-progenitor cells. (Omar & Thomsen, Biomaterials, 2012, Kawazoe T, Cell. Transplant 2012)
It was therefore natural to try to capture the whole amount of monocytes in the PRF, to make it more active in stimulating bone grafts, but also to turn to a more rapid transformation of monocytes into macrophages to increase the effect bone stimulation.