1
|
Hammami I, Graça MPF, Gavinho SR, Jakka SK, Borges JP, Silva JC, Costa LC. Exploring the Impact of Copper Oxide Substitution on Structure, Morphology, Bioactivity, and Electrical Properties of 45S5 Bioglass ®. Biomimetics (Basel) 2024; 9:213. [PMID: 38667224 PMCID: PMC11048336 DOI: 10.3390/biomimetics9040213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024] Open
Abstract
In recent decades, the requirements for implantable medical devices have 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 did not show a significant change in the glass structure. Since the bioglass exhibited the capacity for being polarized, thereby 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.
Collapse
Affiliation(s)
- Imen Hammami
- I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (I.H.); (M.P.F.G.); (S.R.G.); (S.K.J.)
| | - Manuel Pedro Fernandes Graça
- I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (I.H.); (M.P.F.G.); (S.R.G.); (S.K.J.)
| | - Sílvia Rodrigues Gavinho
- I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (I.H.); (M.P.F.G.); (S.R.G.); (S.K.J.)
| | - Suresh Kumar Jakka
- I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (I.H.); (M.P.F.G.); (S.R.G.); (S.K.J.)
| | - João Paulo Borges
- CENIMAT-I3N and Materials Science Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal;
| | - Jorge Carvalho Silva
- CENIMAT-I3N and Physics Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal;
| | - Luís Cadillon Costa
- I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (I.H.); (M.P.F.G.); (S.R.G.); (S.K.J.)
| |
Collapse
|
2
|
Gavinho SR, Hammami I, Jakka SK, Teixeira SS, Silva JC, Borges JP, Graça MPF. Influence of the Addition of Zinc, Strontium, or Magnesium Oxides to the Bioglass 45S5 Network on Electrical Behavior. MATERIALS (BASEL, SWITZERLAND) 2024; 17:499. [PMID: 38276437 PMCID: PMC10820946 DOI: 10.3390/ma17020499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024]
Abstract
45S5 Bioglass has been widely used in regenerative medicine due to its ability to dissolve when inserted into the body. Its typically amorphous structure allows for an ideal dissolution rate for the formation of the hydroxyapatite layer, which is important for the development of new bone. This bioactive capacity can also be controlled by adding other oxides (e.g., SrO, ZnO, and MgO) to the 45S5 Bioglass network or by storing electrical charge. Ions such as zinc, magnesium, and strontium allow for specific biological responses to be added, such as antibacterial action and the ability to increase the rate of osteoblast proliferation. The charge storage capacity allows for a higher rate of bioactivity to be achieved, allowing for faster attachment to the host bone, decreasing the patient's recovery time. Therefore, it is necessary to understand the variation in the structure of the bioglass with regard to the amount of non-bridging oxygens (NBOs), which is important for the bioactivity rate not to be compromised, and also its influence on the electrical behavior relevant to its potential as electrical charge storage. Thus, several bioactive glass compositions were synthesized based on the 45S5 Bioglass formulation with the addition of various concentrations (0.25, 0.5, 1, and 2, mol%) of zinc, strontium, or magnesium oxides. The influence of the insertion of these oxides on the network was evaluated by studying the amount of NBOs using Raman spectroscopy and their implication on the electrical behavior. Electrical characterization was performed in ac (alternating current) and dc (direct current) regimes.
Collapse
Affiliation(s)
- Sílvia Rodrigues Gavinho
- I3N and Physics Department, Aveiro University, 3810-193 Aveiro, Portugal; (S.R.G.); (I.H.); (S.K.J.); (S.S.T.)
| | - Imen Hammami
- I3N and Physics Department, Aveiro University, 3810-193 Aveiro, Portugal; (S.R.G.); (I.H.); (S.K.J.); (S.S.T.)
| | - Suresh Kumar Jakka
- I3N and Physics Department, Aveiro University, 3810-193 Aveiro, Portugal; (S.R.G.); (I.H.); (S.K.J.); (S.S.T.)
| | - Sílvia Soreto Teixeira
- I3N and Physics Department, Aveiro University, 3810-193 Aveiro, Portugal; (S.R.G.); (I.H.); (S.K.J.); (S.S.T.)
| | - Jorge Carvalho Silva
- I3N-CENIMAT and Physics Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal;
| | - João Paulo Borges
- I3N-CENIMAT and Materials Science Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal;
| | | |
Collapse
|
3
|
Abushahba F, Kylmäoja E, Areid N, Hupa L, Vallittu PK, Tuukkanen J, Närhi T. Osteoblast Attachment on Bioactive Glass Air Particle Abrasion-Induced Calcium Phosphate Coating. Bioengineering (Basel) 2024; 11:74. [PMID: 38247951 PMCID: PMC10813256 DOI: 10.3390/bioengineering11010074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/29/2023] [Accepted: 01/09/2024] [Indexed: 01/23/2024] Open
Abstract
Air particle abrasion (APA) using bioactive glass (BG) effectively decontaminates titanium (Ti) surface biofilms and the retained glass particles on the abraded surfaces impart potent antibacterial properties against various clinically significant pathogens. The objective of this study was to investigate the effect of BG APA and simulated body fluid (SBF) immersion of sandblasted and acid-etched (SA) Ti surfaces on osteoblast cell viability. Another goal was to study the antibacterial effect against Streptococcus mutans. Square-shaped 10 mm diameter Ti substrates (n = 136) were SA by grit blasting with aluminum oxide particles, then acid-etching in an HCl-H2SO4 mixture. The SA substrates (n = 68) were used as non-coated controls (NC-SA). The test group (n = 68) was further subjected to APA using experimental zinc-containing BG (Zn4) and then mineralized in SBF for 14 d (Zn4-CaP). Surface roughness, contact angle, and surface free energy (SFE) were calculated on test and control surfaces. In addition, the topography and chemistry of substrate surfaces were also characterized. Osteoblastic cell viability and focal adhesion were also evaluated and compared to glass slides as an additional control. The antibacterial effect of Zn4-CaP was also assessed against S. mutans. After immersion in SBF, a mineralized zinc-containing Ca-P coating was formed on the SA substrates. The Zn4-CaP coating resulted in a significantly lower Ra surface roughness value (2.565 μm; p < 0.001), higher wettability (13.35°; p < 0.001), and higher total SFE (71.13; p < 0.001) compared to 3.695 μm, 77.19° and 40.43 for the NC-SA, respectively. APA using Zn4 can produce a zinc-containing calcium phosphate coating that demonstrates osteoblast cell viability and focal adhesion comparable to that on NC-SA or glass slides. Nevertheless, the coating had no antibacterial effect against S. mutans.
Collapse
Affiliation(s)
- Faleh Abushahba
- Department of Biomaterials Science and Turku Clinical Biomaterial Center—TCBC, Institute of Dentistry, University of Turku, 20520 Turku, Finland;
- Department of Prosthetic Dentistry and Stomatognathic Physiology, Institute of Dentistry, University of Turku, 20520 Turku, Finland;
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Libyan International Medical University (LIMU), Benghazi 339P+62Q, Libya
| | - Elina Kylmäoja
- Department of Anatomy and Cell Biology, Research Unit of Translational Medicine, Medical Research Center, University of Oulu, 90014 Oulu, Finland; (E.K.); (J.T.)
| | - Nagat Areid
- Department of Prosthetic Dentistry and Stomatognathic Physiology, Institute of Dentistry, University of Turku, 20520 Turku, Finland;
| | - Leena Hupa
- Johan Gadolin Process Chemistry Center, Åbo Akademi University, Henriksgatan 2, 20500 Turku, Finland;
| | - Pekka K. Vallittu
- Department of Biomaterials Science and Turku Clinical Biomaterial Center—TCBC, Institute of Dentistry, University of Turku, 20520 Turku, Finland;
- The Wellbeing Service County Southwest Finland, 20521 Turku, Finland
| | - Juha Tuukkanen
- Department of Anatomy and Cell Biology, Research Unit of Translational Medicine, Medical Research Center, University of Oulu, 90014 Oulu, Finland; (E.K.); (J.T.)
| | - Timo Närhi
- Department of Biomaterials Science and Turku Clinical Biomaterial Center—TCBC, Institute of Dentistry, University of Turku, 20520 Turku, Finland;
- Department of Prosthetic Dentistry and Stomatognathic Physiology, Institute of Dentistry, University of Turku, 20520 Turku, Finland;
- The Wellbeing Service County Southwest Finland, 20521 Turku, Finland
| |
Collapse
|