Crystallized TiO2 Nanosurfaces in Biomedical Applications

Nanomaterials
Metka BenčinaIta Junkar

Abstract

Crystallization alters the characteristics of TiO2 nanosurfaces, which consequently influences their bio-performance. In various biomedical applications, the anatase or rutile crystal phase is preferred over amorphous TiO2. The most common crystallization technique is annealing in a conventional furnace. Methods such as hydrothermal or room temperature crystallization, as well as plasma electrolytic oxidation (PEO) and other plasma-induced crystallization techniques, present more feasible and rapid alternatives for crystal phase initiation or transition between anatase and rutile phases. With oxygen plasma treatment, it is possible to achieve an anatase or rutile crystal phase in a few seconds, depending on the plasma conditions. This review article aims to address different crystallization techniques on nanostructured TiO2 surfaces and the influence of crystal phase on biological response. The emphasis is given to electrochemically anodized nanotube arrays and their interaction with the biological environment. A short overview of the most commonly employed medical devices made of titanium and its alloys is presented and discussed.

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Citations

Jul 8, 2020·Materials·Matic ResnikIta Junkar
Jan 26, 2021·Frontiers in Bioengineering and Biotechnology·Tianyu ShuDandan Pei
Aug 28, 2021·Antibiotics·Marcela Nowak, Wioletta Barańska-Rybak

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