IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-4-34620 Original Research Paper EFFECT OF PLATELET RICH FIBRIN AS AN ADJUNCT TO BIOACTIVE GLASS COMPARED TO BIOACTIVE GLASS ALONE FOR THE TREATMENT OF INTRABONY DEFECTS IN CHRONIC PERIODONTITIS PATIENTS - A SYSTEMATIC REVIEW Pankti Gangar Dr. April 2021 10 4 01 02