Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Exploring the Impact of Copper Oxide Substitution on Structure, Morphology, Bioactivity, and Electrical Properties of 45S5 Bioglass

Imen Hammami
ORCID logo ,
Manuel Graça
ORCID logo ,
Silvia Gavinho
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Suresh Kumar Jakka
ORCID logo ,
João Paulo Borges
ORCID logo ,
Jorge Carvalho Silva
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Luís Cadillon Costa
* ORCID logo
Version 1 : Received: 2 March 2024 / Approved: 4 March 2024 / Online: 5 March 2024 (09:14:43 CET)

A peer-reviewed article of this Preprint also exists.

Hammami, I.; Graça, M.P.F.; Gavinho, S.R.; Jakka, S.K.; Borges, J.P.; Silva, J.C.; Costa, L.C. Exploring the Impact of Copper Oxide Substitution on Structure, Morphology, Bioactivity, and Electrical Properties of 45S5 Bioglass®. Biomimetics 2024, 9, 213. Hammami, I.; Graça, M.P.F.; Gavinho, S.R.; Jakka, S.K.; Borges, J.P.; Silva, J.C.; Costa, L.C. Exploring the Impact of Copper Oxide Substitution on Structure, Morphology, Bioactivity, and Electrical Properties of 45S5 Bioglass®. Biomimetics 2024, 9, 213.

Abstract

In recent decades, the requirements for implantable medical devices increased, but the risks of implant rejection still exist. These issues are primarily associated with poor osseointegration, leading to biofilm formation on the implant surface. This study focuses on addressing these issues by developing a biomaterial for implant coatings. 45S5 Bioglass has been widely used in tissue engineering due to its ability to form a hydroxyapatite layer, ensuring a strong bond between the hard tissue and the bioglass. In this context, 45S5 bioglasses, modified by the incorporation of different amounts of copper oxide, from 0 to 8 mol%, were synthesized by the melt-quenching technique. The incorporation of Cu ions does not show a significant change in the glass structure. Since the bioglass exhibited the capacity of being polarized, and therefore promoting the osseointegration effectiveness, the electrical properties of the prepared samples were studied using the impedance spectroscopy method, in the frequency range of 102-106 Hz and temperature range of 200-400 K. The effects of CuO on charge transport mobility were investigated. Additionally, the bioactivity of the modified bioglasses was evaluated through immersion tests in simulated body fluid. The results revealed the initiation of a Ca-P-rich layer formation on the surface within 24 h, indicating the potential of the bioglasses to enhance the bone regeneration process.

Keywords

bioglass®; biomaterial; implant coatings; osseointegration; electrical properties

Subject

Physical Sciences, Applied Physics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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