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Antibacterial activity and biocompatibility of silver coating via aerosol deposition on titanium and zirconia surfaces

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Choi, Sunyoung; Jo, Ye-Hyeon; Han, Jung-Suk; Yoon, Hyung-In; Lee, Jae-Hyun; Yeo, In-Sung Luke

Issue Date
Springer | Deutsche Gesellschaft für Implantologie im Zahn‐, Mund‐ und Kieferbereich e.V.; Japanese Society of Oral Implantology
International Journal of Implant Dentistry, Vol.9 No.1, p. 24
PurposeThe purpose of this in vitro study was to investigate the antibacterial effect and biocompatibility of silver coatings via aerosol deposition on titanium and zirconia surfaces.MethodsThe surfaces of titanium and zirconia specimens were polished and coated with silver via aerosol deposition. After silver coating, the elemental composition, surface roughness and amount of silver released from the coated surfaces were measured. The bacterial growth on the silver-coated surfaces was investigated via crystal violet assay after incubation with Streptococcus gordonii for 24 h, Fusobacterium nucleatum for 72 h and Porphyromonas gingivalis for 48 h. Human gingival fibroblasts and mouse preosteoblasts were also cultured on the silver-coated specimens to examine the biocompatibility of the coating.ResultsAfter silver coating via aerosol deposition, the surface roughness increased significantly, and the released silver ranged from 0.067 to 0.110 ppm. The tested bacteria formed significantly less biofilm on the silver-coated titanium surfaces than on the uncoated titanium surfaces. In contrast, biofilm formation on the silver-coated zirconia surfaces was greater than that on the uncoated zirconia surfaces. Human gingival fibroblasts and mouse preosteoblasts proliferated on the silver-coated surfaces without significant differences from the uncoated surfaces.ConclusionsSilver coating via aerosol deposition provided an antibacterial effect against oral bacteria on titanium surfaces, whereas it promoted more bacterial growth on zirconia surfaces. The proliferation of fibroblasts and osteoblasts was not significantly affected by the silver coating on both titanium and zirconia surfaces.
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  • Department of Dentistry
Research Area Big Data Analysis, Dental Implant, Digital Dental Technology


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