SALIH TAHA, S. M., ISSA, N. K., & MOHAMMED, S. A. (2021). THE EFFECT OF Pepper Nigrum, Olea Europaea MOUTHWASH WITH NON SURGICAL PERIODONTAL THERAPY ON CLINICAL OUTCOME AND OXIDATIVE STRESS IN CHRONIC PERIODONTITIS PATIENTS. Journal of Duhok University, 24(2), 103-113. https://doi.org/10.26682/sjuod.2021.24.2.11