scholarly journals Magnesium-particle/polyurethane composite layer coating on titanium surfaces for orthopedic applications

2019 ◽  
Vol 112 ◽  
pp. 555-568 ◽  
Author(s):  
Abdalla Abdal-hay ◽  
Mahmoud Agour ◽  
Yu-Kyoung Kim ◽  
Min-Ho Lee ◽  
Mohamed K. Hassan ◽  
...  
Keyword(s):  
Composite Layer ◽  
Magnesium Particle ◽  
Polyurethane Composite ◽  
Titanium Surfaces ◽  
Orthopedic Applications ◽  
Layer Coating

Anodization: A Promising Nano-Modification Technique of Titanium Implants for Orthopedic Applications

2006 ◽  
Vol 6 (9) ◽  
pp. 2682-2692 ◽  
Author(s):  
Chang Yao ◽  
Thomas J. Webster
Keyword(s):  
Titanium Oxide ◽  
Porous Titanium ◽  
Titanium Implants ◽  
Protective Oxide ◽  
Surface Features ◽  
Modification Technique ◽  
Titanium Surfaces ◽  
Anodized Titanium ◽  
Orthopedic Applications ◽  
Porous Titanium Oxide

Anodization is a well-established surface modification technique that produces protective oxide layers on valve metals such as titanium. Many studies have used anodization to produce micro-porous titanium oxide films on implant surfaces for orthopedic applications. An additional hydrothermal treatment has also been used in conjunction with anodization to deposit hydroxyapatite on titanium surfaces; this is in contrast to using traditional plasma spray deposition techniques. Recently, the ability to create nanometer surface structures (e.g., nano-tubular) via anodization of titanium implants in fluorine solutions have intrigued investigators to fabricate nano-scale surface features that mimic the natural bone environment. This paper will present an overview of anodization techniques used to produce micro-porous titanium oxide structures and nano-tubular oxide structures, subsequent properties of these anodized titanium surfaces, and ultimately their in vitro as well as in vivo biological responses pertinent for orthopedic applications. Lastly, this review will emphasize why anodized titanium structures that have nanometer surface features enhance bone forming cell functions.

Smart rose flower like bioceramic/metal oxide dual layer coating with enhanced anti-bacterial, anti-cancer, anti-corrosive and biocompatible properties for improved orthopedic applications

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85831-85844 ◽  
Author(s):  
N. Murugan ◽  
L. Kavitha ◽  
E. Shinyjoy ◽  
D. Rajeswari ◽  
K. Vimala ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Metal Oxide ◽  
Cancer Treatment ◽  
Bone Cancer ◽  
Az91 Magnesium Alloy ◽  
Rose Flower ◽  
Anti Cancer ◽  
Az91 Magnesium ◽  
Orthopedic Applications ◽  
Layer Coating

The flower like Se,Mn-HAP/ZrO2 dual layer coating on AZ91 magnesium alloy satisfies the requirements in bone cancer treatment and signifies progress in the field of implant materials.

Attachment of oral bacteria to titanium surfaces: An SEM study

1994 ◽  
Vol 52 ◽  
pp. 468-469
Author(s):  
J. E. Laffoon ◽  
R. L. Anderson ◽  
J. C. Keller ◽  
C. D. Wu-Yuan
Keyword(s):  
Technical Problem ◽  
Titanium Implant ◽  
Oral Bacteria ◽  
Bacterial Cells ◽  
Thin Sections ◽  
Surface Ultrastructure ◽  
Sem Study ◽  
Key Factor ◽  
Titanium Surfaces

Titanium (Ti) dental implants have been used widely for many years. Long term implant failures are related, in part, to the development of peri-implantitis frequently associated with bacteria. Bacterial adherence and colonization have been considered a key factor in the pathogenesis of many biomaterial based infections. Without the initial attachment of oral bacteria to Ti-implant surfaces, subsequent polymicrobial accumulation and colonization leading to peri-implant disease cannot occur. The overall goal of this study is to examine the implant-oral bacterial interfaces and gain a greater understanding of their attachment characteristics and mechanisms. Since the detailed cell surface ultrastructure involved in attachment is only discernible at the electron microscopy level, the study is complicated by the technical problem of obtaining titanium implant and attached bacterial cells in the same ultra-thin sections. In this study, a technique was developed to facilitate the study of Ti implant-bacteria interface.Discs of polymerized Spurr’s resin (12 mm x 5 mm) were formed to a thickness of approximately 3 mm using an EM block holder (Fig. 1). Titanium was then deposited by vacuum deposition to a film thickness of 300Å (Fig. 2).

ROLE OF rhBMP-2 AND rhBMP-7 IN THE METABOLISM AND DIFFERENTIATION OF OSTEOBLAST-LIKE CELLS CULTURED ON CHEMICALLY MODIFIED TITANIUM SURFACES

2012 ◽  
pp. 141208072802005
Author(s):  
Fabiano Ribeiro Cirano ◽  
ADRIANE TOGASHI ◽  
MARCIA MARQUES ◽  
FRANCISCO PUSTIGLIONI ◽  
LUIZ LIMA
Keyword(s):  
Chemically Modified ◽  
Titanium Surfaces ◽  
Cells Cultured

Operando Visualization of Morphological Dynamics in All-Solid-State Batteries

2019 ◽  
Author(s):  
Xiaohan Wu ◽  
Juliette Billaud ◽  
Iwan Jerjen ◽  
Federica Marone ◽  
Yuya Ishihara ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolytes ◽  
Rational Design ◽  
Morphological Evolution ◽  
Active Material ◽  
Composite Layer ◽  
Transference Number ◽  
Thermal Stabilities ◽  
Solid State Batteries ◽  
All Solid State Batteries

<div> <div> <div> <p>All-solid-state batteries are considered as attractive options for next-generation energy storage owing to the favourable properties (unit transference number and thermal stabilities) of solid electrolytes. However, there are also serious concerns about mechanical deformation of solid electrolytes leading to the degradation of the battery performance. Therefore, understanding the mechanism underlying the electro-mechanical properties in SSBs are essentially important. Here, we show three-dimensional and time-resolved measurements of an all-solid-state cell using synchrotron radiation x-ray tomographic microscopy. We could clearly observe the gradient of the electrochemical reaction and the morphological evolution in the composite layer. Volume expansion/compression of the active material (Sn) was strongly oriented along the thickness of the electrode. While this results in significant deformation (cracking) in the solid electrolyte region, we also find organized cracking patterns depending on the particle size and their arrangements. This study based on operando visualization therefore opens the door towards rational design of particles and electrode morphology for all-solid-state batteries. </p> </div> </div> </div>

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