Keceli HG, Ercan N, Karsiyaka Hendek M, Kisa U, et al. The effect of the systemic folic acid intake as an adjunct to scaling and root planing on clinical parameters and homocysteine and C-reactive protein levels in gingival crevicular fluid of periodontitis patients: A randomized placebo-controlled clinic J Clin Periodontol 2020;47:602-613.
PMID: 32109317