Estetika - zbarvení dásní
Cosgarea et al. - 2015 - Peri-implant soft tissue colour around titanium and zirconia abutments
Happe et al. - 2013 - In Vitro Color Changes of Soft Tissues Caused by Dyed Fluorescent Zirconia and Nondyed, Nonfluorescent Zirconia in Thin Mucosa
Kim et al. - 2016 - Abutment Material Effect on Peri-implant Soft Tissue Color and Perceived Esthetics
