Healing of Intrabony Defects Following Treatment With PRF or EMD

Platelet-rich fibrin (PRF) was prepared according to the manufacturer's instructions. A blood sample was collected from the cubital vein in 10 ml tubes without anticoagulant and centrifuged at 3000 rpm for 10 minutes using a GLO GT416 table centrifuge (GLO Glotech Co. Ltd, Korea) and GLO PRP collection kit (GLO PRP-Kit, Glotech Co, Asan Choong-nam, Korea/ Glofinn, Finland).

"In the control group, the root surface was conditioned with 24% ethylenediaminetetraacetic acid (EDTA) gel for two minutes, washed with physiological saline solution, dried, and treated with enamel matrix derivative (EMD), (Emdogain, Straumann, Switzerland) per manufacturer recommendations."