“COMPARATIVE ESTIMATION OF LEVEL OF TNF- ? IN GINGIVAL CREVICULAR FLUID AND BLOOD SERUM IN PATIENT WITH CHRONIC PERIODONTITIS BEFORE AND AFTER SCALING AND ROOT PLANING: A BIOCHEMICAL STUDY”, ijmsdr, vol. 3, no. 10, Oct. 2019, Accessed: Oct. 06, 2026. [Online]. Available: https://www.ijmsdr.com/index.php/ijmsdr/article/view/501