Altayf, A.A. 2023. The Level of 25-Hydroxy Vitamin D3 in Gingival Crevicular fluid and Serum Pre-Post Scaling and Root Planning in Chronic Periodontitis Patients in Western Libya: Comparative Study. Al-Mukhtar Journal of Sciences. 38, 4 (Dec. 2023), 354–359. DOI:https://doi.org/10.54172/njjw7j72.