Manufacturing of a metallic 3D framework coated with a bioglass matrix for implant applications
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Manufacturing of a metallic 3D framework coated with a bioglass matrix for implant applications Zakaria Tabia1, Meriame Bricha1, Khalil El Mabrouk1,* 1
, and Se´bastien Vaudreuil1
Euromed Research Center, Euromed Engineering Faculty, Euromed University of Fes, Eco- Campus, Meknes Road, 30 030 Fes, Morocco
Received: 6 May 2020
ABSTRACT
Accepted: 19 September 2020
In a new approach combining additive manufacturing with bioceramics, a metallic 3D porous structure coated with bioactive glass was produced for possible use in orthopedic implants. This approach aims to combine high mechanical properties of the metallic structure with enhanced biological activity. 316L stainless steel (316L-SS) lattice structures were fabricated using selective laser melting. Despite its good mechanical properties, 316L-SS lacks the biofunctionality required to achieve long-term implantation. To be successfully used as biomaterial, these porous 3D lattice structures were thus coated by 58S bioglass through a simple impregnation method. The use of a silica layer was evaluated as possible pretreatment to improve bioglass adhesion. The coated parts are then assessed by scanning electron microscopy coupled with energydispersive spectrometry to qualify the coating. Porous sample parts pretreated with a silica layer presented a denser coating structure when compared with untreated porous metallic structures. The bioactivity in SBF medium shows the formation of a uniform apatite layer after 7 days of immersion, producing the bioregeneration capability. This latter, combined with the lightweight framework structure provided by 316-SS, will increase the lifetime of this new generation of orthopedic implants.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
Introduction In clinical medicine, the increasing number of trauma and pathologies in need of organ or tissue transplantation is becoming a serious issue. This trend can
Handling Editor: Annela M. Seddon.
Address correspondence to E-mail: [email protected]
https://doi.org/10.1007/s10853-020-05370-3
be explained by several factors, such as the aging population and obesity, both of which are considered as direct precursors of osteoarthritis. However, despite the many approaches available such as the autograft, allograft and xenotransplantation, there are still limitations which can lead to implant rejection.
J Mater Sci
Nevertheless, biomaterials and artificial organs are generally advocated in order to reduce pain and improve the quality of life for patients. Total hip replacements (THR) or total knee replacement (TKR) is currently one of the most common health interventions in the world [1]. In the UK, the annual incidence rate of primary total joints has been growing steadily from 1990 to 2000. Current data from the National Joint Registry for England, Wales and Northern Ireland (NJR) indicates that the number of operations for primary total joint replacement is steadily increasing, with 75,366 hip and 76,497 knee procedures performed in 2012 [2]. Thes
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