Damage generated by MeV-ion Beams on Titanium Surface in Oxidizing Environment

ABSTRACTThe study of the irradiation effects on titanium surfaces in oxidizing environment using multi-charged Argon ions in the MeV range shed into light the following points:-Significant oxide film thickening for the film grown at 500°C under irradiation at 4 and 9 MeV, by comparison with the TiO2 rutile film grown under same environmental conditions without irradiation;-Formation of large round –shaped craters, of diameter approaching 200 nanometers, at the titanium surface under irradiation at 500°C provided that the environment is enough oxidizing or provided that the metal surface is covered by a sufficiently thick oxide film.Practically, and for the present system, the superficial craterization is observed if the thickness of the superficial oxide is equal to twice that of the native oxide (~3 nm).

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Spectroscopic ellipsometrical studies of UV irradiation effects on the surface properties of the ultra thin native oxide film on titanium

e-Journal of Surface Science and Nanotechnology ◽

10.1380/ejssnt.2005.284 ◽

2005 ◽

Vol 3 (0) ◽

pp. 284-293 ◽

Cited By ~ 2

Author(s):

Hiroshi Nanjo ◽

Zhengbin Xia ◽

Yuhong Yao ◽

Kimitaka Minami ◽

Masateru Nishioka

Keyword(s):

Oxide Film ◽

Surface Properties ◽

Uv Irradiation ◽

Native Oxide ◽

Irradiation Effects

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Titanium and zirconium oxidation under argon irradiation in the low MeV range

MRS Proceedings ◽

10.1557/opl.2013.127 ◽

2013 ◽

Vol 1514 ◽

pp. 81-85 ◽

Cited By ~ 1

Author(s):

Dominique Gorse-Pomonti ◽

Ngoc-Long Do ◽

Nicolas Bérerd ◽

Nathalie Moncoffre ◽

Gianguido Baldinozzi

Keyword(s):

Oxide Film ◽

Oxidation Process ◽

Stopping Power ◽

Projectile Energy ◽

Oxidation Peak ◽

Irradiation Effects ◽

Nuclear Stopping ◽

Dry Air ◽

Argon Ions

ABSTRACTWe studied the irradiation effects on Ti and Zr surfaces in slightly oxidizing environment (rarefied dry air, 500°C) using multi-charged argon ions in the low MeV range (1 – 9 MeV) to the aim of determining the respective role of the electronic and nuclear stopping power in the operating oxidation process under irradiation. We have shown that ballistic collisions contribute significantly to the enhanced Ti and Zr oxidation under MeV argon bombardment. We have also shown that the projectile energy plays a significant role in the overall process.A significant oxide film thickening is visible on titanium under irradiation, taking the form of a well-defined oxidation peak between 1 and 4 MeV, as a result of the Nuclear Backscattering Spectroscopy and Spectroscopic Ellipsometry studies.A significant oxide film thickening is also visible on zirconium under same irradiation conditions, at 4 and 9 MeV, as a result of the NBS study. Work is in progress in order to determine how the modified oxidation process depends in this case on the projectile energy.

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Titanium Oxide: A Bioactive Factor in Osteoblast Differentiation

International Journal of Dentistry ◽

10.1155/2015/357653 ◽

2015 ◽

Vol 2015 ◽

pp. 1-9 ◽

Cited By ~ 12

Author(s):

P. Santiago-Medina ◽

P. A. Sundaram ◽

N. Diffoot-Carlo

Keyword(s):

Titanium Alloy ◽

Titanium Alloys ◽

Titanium Oxide ◽

Titanium Surface ◽

Cell Attachment ◽

Tissue Growth ◽

Native Oxide ◽

Key Indicator ◽

Titanium Surfaces ◽

Dental Applications

Titanium and titanium alloys are currently accepted as the gold standard in dental applications. Their excellent biocompatibility has been attributed to the inert titanium surface through the formation of a thin native oxide which has been correlated to the excellent corrosion resistance of this material in body fluids. Whether this titanium oxide layer is essential to the outstanding biocompatibility of titanium surfaces in orthopedic biomaterial applications is still a moot point. To study this critical aspect further, human fetal osteoblasts were cultured on thermally oxidized and microarc oxidized (MAO) surfaces and cell differentiation, a key indicator in bone tissue growth, was quantified by measuring the expression of alkaline phosphatase (ALP) using a commercial assay kit. Cell attachment was similar on all the oxidized surfaces although ALP expression was highest on the oxidized titanium alloy surfaces. Untreated titanium alloy surfaces showed a distinctly lower degree of ALP activity. This indicates that titanium oxide clearly upregulates ALP expression in human fetal osteoblasts and may be a key bioactive factor that causes the excellent biocompatibility of titanium alloys. This result may make it imperative to incorporate titanium oxide in all hard tissue applications involving titanium and other alloys.

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Long-lasting renewable antibacterial porous polymeric coatings enable titanium biomaterials to prevent and treat peri-implant infection

Nature Communications ◽

10.1038/s41467-021-23069-0 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Shuyi Wu ◽

Jianmeng Xu ◽

Leiyan Zou ◽

Shulu Luo ◽

Run Yao ◽

...

Keyword(s):

Dental Implant ◽

Pathogenic Bacteria ◽

Titanium Surface ◽

Polymeric Coating ◽

Antibacterial Efficacy ◽

Polymeric Coatings ◽

Implant Infection ◽

Titanium Surfaces

AbstractPeri-implant infection is one of the biggest threats to the success of dental implant. Existing coatings on titanium surfaces exhibit rapid decrease in antibacterial efficacy, which is difficult to promisingly prevent peri-implant infection. Herein, we report an N-halamine polymeric coating on titanium surface that simultaneously has long-lasting renewable antibacterial efficacy with good stability and biocompatibility. Our coating is powerfully biocidal against both main pathogenic bacteria of peri-implant infection and complex bacteria from peri-implantitis patients. More importantly, its antibacterial efficacy can persist for a long term (e.g., 12~16 weeks) in vitro, in animal model, and even in human oral cavity, which generally covers the whole formation process of osseointegrated interface. Furthermore, after consumption, it can regain its antibacterial ability by facile rechlorination, highlighting a valuable concept of renewable antibacterial coating in dental implant. These findings indicate an appealing application prospect for prevention and treatment of peri-implant infection.

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