RESULTS	Pocket depth reduction of 3.60 + / - 0.51 mm , clinical attachment gain of 3.3 + / - 1.77 mm and defect fill of 3.47 + / - 0.53 mm were noted in the PRP/BG group , with 3.29 + / - 1.68 , 2.86 + / - 1.56 and 3.36 + / - 0.55 mm improvements , respectively , noted for the BG group .\