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Nigella sativa oil as a treatment for gingivitis: A randomized active-control trial

亚太热带医药杂志：英文版 2023年第3期16卷 129-138页

作者： Ishrat Rahman Afrah Mohammed Manal A.AlSheddi Alanoud Algazlan Alanoud Alwably Mamata Hebbal maha galal omar Department of Basic Dental Sciences College of DentistryPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Biology College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia College of Dentistry Princess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Preventative Dental Sciences College of DentistryPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia

Objective: To assess the clinical anti-inflammatory and antimicrobial efficacy of Nigella sativa oil compared with chlorhexidine in patients with gingivitis. Methods: A double-blind, randomized clinical trial was conducted in patients having chronic generalized gingivitis. Patients were randomly assigned to receive Nigella sativa oil(n=18) or chlorhexidine(n=19). The following assessments were made on day 0 and day 15: plaque index, gingival index, gingival IL-6 and IL-18 levels were measured using ELISA, plaque colony-forming units, and alpha-hemolytic Streptococcus strains. Data were analyzed using parametric and non-parametric tests and Fisher’s exact ***: Both interventions reduced plaque index and gingival index scores(P0.05). The post-intervention plaque index and gingival index scores and inflammatory cytokine levels between the two groups were not significantly different. Both interventions caused a significant reduction in the plaque colony-forming units(P<0.000 1), reducing pathogenic bacteria: Streptococcus mitis, Streptococcus oralis, Streptococcus sanguinis, and Streptococcus parasanguinis in the chlorhexidine group(50%)(P=0.103 1), and the Nigella sativa oil group(20%)(P=0.739 5). Conclusions: Nigella sativa oil had anti-inflammatory and antibacterial activities, reducing biofilm formation and disrupting the colonization of pathogenic bacteria essential for the progression of periodontal disease. Nigella sativa oil could offer an alternative therapy for treating gingivitis and may prevent associated systemic diseases and improve overall health outcomes.

关键词： Chlorhexidine Mouth rinse Interleukin Gingival index Plaque index

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The Influence of Eddy Diffusivity Variation on the Atmospheric Diffusion Equation

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Open Journal of Air Pollution 2015年第3期4卷 109-118页

作者： A. A. Marrouf Khaled S. M. Essa maha S. El-Otaify Adel S. Mohamed galal Ismail Department of Mathematics and Theoretical Physics Atomic Energy Authority Cairo Egypt Department of Mathematics Faculty of Science Zagazig University Zagazig Egypt

The advection diffusion equation was solved analytically using separation of variables technique, considering first the wind speed and eddy diffusivity as constants;second as variables dependent on vertical height z. ... 详细信息

关键词： Advection-Diffusion Equation Separation of Variable Technique Pollution Concentrations

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