Figure 1From: Investigation of biomaterials by human epithelial gingiva cells: an in vitro study SEM of Titanium and Zirconium dioxide specimen material. Titanium specimen: co-centric microgrooves (a), topographical appearance (b), magnification (c). Zirconium dioxide: Faint co-centric micro grooved surface (d), topographical appearance (e), micro pore (f).Back to article page