Kazemi, Hosna, et al. “Effect of Nicotine on Attachment and Proliferation of Human Gingival Fibroblasts on Zirconia and Titanium Surfaces: Nicotine Effects on Cellular Behavior on Zirconia and Titanium”. Regeneration, Reconstruction & Restoration (Triple R), vol. 10, Nov. 2025, https://journals.sbmu.ac.ir/tripleR/article/view/50317.