Kiari FZ, Meddah B, Tir touil meddah A The Saudi Dental Journal, 2018 ABSTRACT: An in vitro evaluation of the antimicrobial activity of essential oil (EO) and methanol extract (ME) from Algerian Nigella sativa L. seeds against microbial strains isolated from the oral cavities of periodontal patients was performed. Twelve Gram-positive bacteria, eleven Gram-negative bacteria… Read more »