The Use of Injectable-Platelet Rich Fibrin (i-PRF) in the Lower Third Molar Extraction

"After loco-regional anesthesia was administered, a full-thickness mucoperiosteal flap was raised. The flap incision was extended from the vestibular side of the retromolar trigon to the second molar, corresponding to its distolingual cusp. The incision continued intrasulcular at the second molar and proceeded with a release incision distally to the papilla between the first and second molars, on a 45° angle.~An osteotomy using a Lindemann burr under constant irrigation, followed by an odontotomy using a diamond burr was performed, if necessary."

20 ml of venous blood will be drawn from the ante-cubital vein of all patients and collected in 2 plastic tubes (Vacutainer, Becton\& Dickinson, Rutherford, NJ) containing no anticoagulant or gelling agent. The tubes will be placed in a centrifuge (DUO Centrifuge, Nice, France) at 700 round per minute for 3 min, at the end of which time the blood will be separated into 2 fractions: the layer of injectable liquid i-PRF, which is more superficial, and the layer of red blood cells, in the deep part. From each tube, i-PRF will be withdrawn using a sterile syringe and it will be infiltrated into the lesion.