Metals as Biomaterials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Biobased and Biodegradable Metals".

Deadline for manuscript submissions: closed (15 February 2021) | Viewed by 3901

Special Issue Editor


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Guest Editor
Metallic Materials Science and Physical Metallurgy Department, Politehnica University of Bucharest, 060042 Bucharest, Romania
Interests: design and development of medical devices for bone reconstruction, synthesis, and preparation of calcium phosphates from natural sources; membrane materials; hybrid and composite materials
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Special Issue Information

Dear Colleagues,

The periodic table of elements is composed of approximately 80% metals. However, only a few metals can be used as biomaterials, pure and alloyed alike. The ones classified as such can be used to repair or facilitate the restoration of various human sufferings—congenital, trauma, or surgically induced—for functional remodeling. Historically, metals have been used towards such purposes for thousands of years. The evolution of their usage can be appreciated as being extraordinary in the last century and exponential in the last decade. This dynamic is attributed mainly to the evolution of medicine through innovative techniques and approaches as well as materials science through the development of new processing and modeling technologies. The sharing of knowledge and experiences between doctors and researchers has led to the possibility of using the latest methods for obtaining and using biomaterials and nanomaterials through advanced processing techniques such as tridimensional printing. In this Special Issue of Metals, we will gather the top research results from researchers in various fields related to obtaining, processing, and utilizing biomaterials containing or coated by metals. The focus is on the opportunities created by thermal conductivity, mechanical properties, and the ability to restore the shape and functions of the human body. In essence, the topic of this Special Issue is only limited by the novelty of the information, with regards to ferrous and non-ferrous alloys, including bulk, composite, layered, coated, crystalline, amorphous, or various combinations. Topics of interest comprise corrosion resistant alloys, biodegradable alloys, modern processing technologies, in vitro and in vivo biological responses, and high-resolution characterization techniques. The data presented may include analysis of the materials, implants, or explants. Submitted manuscripts should be limited to short communications, reviews, or research articles.

Prof. Florin Miculescu
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • Metals as biomaterials
  • Modern biomaterials processing methods
  • Biomaterials corrosion resistance
  • Biodegradable metals and alloys
  • Biomaterials applications
  • In vitro and in vivo response

Published Papers (1 paper)

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Research

18 pages, 8711 KiB  
Article
Surface Modification of Porous Titanium Discs Using Femtosecond Laser Structuring
by Ángel Rodríguez, Paloma Trueba, José Manuel Amado, María José Tobar, Mercè Giner, Vicente Amigó and Yadir Torres
Metals 2020, 10(6), 748; https://0-doi-org.brum.beds.ac.uk/10.3390/met10060748 - 04 Jun 2020
Cited by 15 | Viewed by 2942
Abstract
The failure of titanium implants is associated with two main problems that include the bone resorption and fracture of the surrounding bone tissue (stiffness incompatibility) and implant loosening (poor osseointegration). The development of porous titanium implants with low Young modulus solve the stress [...] Read more.
The failure of titanium implants is associated with two main problems that include the bone resorption and fracture of the surrounding bone tissue (stiffness incompatibility) and implant loosening (poor osseointegration). The development of porous titanium implants with low Young modulus solve the stress shielding phenomenon, while the modification of the implant surface must be implemented to promote a fast bond between the implant and bone. In this work, femtosecond laser micromachining was applied to modify the topography of the surface of Ti porous samples obtained by a space-holder technique to obtain hierarchical structures (micro and nano roughness patterns) to enhance osseointegration. Scanning electron microscopy, confocal laser microscopy, and image analysis were used for characterization of the surface morphology, roughness, and porosity before and after performing the laser treatment. Based on these results, the effect of the treatment on the mechanical behavior of the samples was estimated. In addition, a preliminary in-vitro test was performed to verify the adhesion of osteoblasts (filopodia presence) on modified titanium surface. Results revealed that laser texturing generated clusters of micro-holes and micro-columns both on the flat surface of the samples and inside the macro-pores, and periodic nanometric structures across the entire surface. The porous substrate offers suitable biomechanics (stiffness and yield strength) and bio-functional behavior (bone ingrowth and osseointegration), which improves the clinic success of titanium implants. Full article
(This article belongs to the Special Issue Metals as Biomaterials)
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