Nanotubular Oxide Layer Formed on Helix Surfaces of Dental Screw Implants - Publication - MOST Wiedzy

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Nanotubular Oxide Layer Formed on Helix Surfaces of Dental Screw Implants

Abstract

Surface modification is used to extend the life of implants. To increase the corrosion resistance and improve the biocompatibility of metal implant materials, oxidation of the Ti-13Nb- 13Zr titanium alloy was used. The samples used for the research had the shape of a helix with a metric thread, with their geometry imitating a dental implant. The oxide layer was produced by a standard electrochemical method in an environment of 1M H3PO4 + 0.3% HF for 20 min, at a constant voltage of 30 V. The oxidized samples were analyzed with a scanning electron microscope. Nanotubular oxide layers with internal diameters of 30–80 nm were found. An analysis of the surface topography was performed using an optical microscope, and the Sa parameter was determined for the top of the helix and for the bottom, where a significant difference in value was observed. The presence of the modification layer, visible at the bottom of the helix, was confirmed by analyzing the sample cross-sections using computed tomography. Corrosion tests performed in the artificial saliva solution demonstrated higher corrosion current and less noble corrosion potential due to incomplete surface coverage and pitting. Necessary improved oxidation parameters will be applied in future work.

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Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
Coatings no. 11,
ISSN: 2079-6412
Language:
English
Publication year:
2021
Bibliographic description:
Jażdżewska M., Bartmański M.: Nanotubular Oxide Layer Formed on Helix Surfaces of Dental Screw Implants// Coatings -Vol. 11,iss. 2 (2021), s.115-
DOI:
Digital Object Identifier (open in new tab) 10.3390/coatings11020115
Verified by:
Gdańsk University of Technology

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