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- Title
Bioactive Coating on Titanium Dental Implants for Improved Anticorrosion Protection: A Combined Experimental and Theoretical Study.
- Authors
Katić, Jozefina; Šarić, Ankica; Despotović, Ines; Matijaković, Nives; Petković, Marin; Petrović, Željka
- Abstract
In recent years, extensive studies have been continuously undertaken on the design of bioactive and biomimetic dental implant surfaces due to the need for improvement of the implant–bone interface properties. In this paper, the titanium dental implant surface was modified by bioactive vitamin D3 molecules by a self-assembly process in order to form an improved anticorrosion coating. Surface characterization of the modified implant was performed by field emission scanning electron microscopy (FE-SEM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), and contact angle measurements (CA). The implant's electrochemical stability during exposure to an artificial saliva solution was monitored in situ by electrochemical impedance spectroscopy (EIS). The experimental results obtained were corroborated by means of quantum chemical calculations at the density functional theory level (DFT). The formation mechanism of the coating onto the titanium implant surface was proposed. During a prolonged immersion period, the bioactive coating effectively prevented a corrosive attack on the underlying titanium (polarization resistance in order of 107 Ω cm2) with ~95% protection effectiveness.
- Subjects
OSSEOINTEGRATION; ARTIFICIAL saliva; DENTAL implants; FOURIER transform infrared spectroscopy; FIELD emission electron microscopy; SURFACE analysis; TITANIUM
- Publication
Coatings (2079-6412), 2019, Vol 9, Issue 10, p612
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings9100612