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Witkowska J, Borowski T, Sowińska A, Choińska E, Moszczyńska D, Morgiel J, Sobiecki J, Wierzchoń T. Influence of Low Temperature Plasma Oxidizing on the Bioactivity of NiTi Shape Memory Alloy for Medical Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6086. [PMID: 37763363 PMCID: PMC10533197 DOI: 10.3390/ma16186086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/24/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023]
Abstract
The present study elucidates the impact of glow discharge oxidation within a low-temperature plasma environment on the bioactivity characteristics of an NiTi shape memory alloy. The properties of the produced surface layers, such as structure (TEM observations), surface morphology (SEM observations), chemical and phase composition (EDS and XRD measurements), wettability (optical gonimeter), and the biological response of osteoblasts and platelets to the oxidized surface compared with the NiTi alloy without a surface layer are presented. The presented surface modification of the NiTi shape memory alloy, achieved through oxidizing in a low-temperature plasma environment, led to the creation of a continuous surface layer composed of nanocrystalline titanium oxide TiO2 (rutile). The findings obtained from this study provide evidence that the oxidized layer augments the bioactivity of the shape memory alloy. This augmentation was substantiated through the spontaneous biomimetic deposition of apatite from a simulated body fluid (SBF) solution. Furthermore, the modified surface exhibited improved osteoblast proliferation, and enhanced platelet adhesion and activation. This proposed surface modification strategy holds promise as a prospective solution to enhance the biocompatibility and bioactivity of NiTi shape memory alloy intended for prolonged use in bone implant applications.
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Affiliation(s)
- Justyna Witkowska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; (T.B.); (E.C.); (D.M.); (J.S.); (T.W.)
| | - Tomasz Borowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; (T.B.); (E.C.); (D.M.); (J.S.); (T.W.)
| | - Agnieszka Sowińska
- Pathology Department, Children’s Memorial Health Institute, 04-730 Warsaw, Poland;
| | - Emilia Choińska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; (T.B.); (E.C.); (D.M.); (J.S.); (T.W.)
| | - Dorota Moszczyńska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; (T.B.); (E.C.); (D.M.); (J.S.); (T.W.)
| | - Jerzy Morgiel
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 30-059 Krakow, Poland;
| | - Jerzy Sobiecki
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; (T.B.); (E.C.); (D.M.); (J.S.); (T.W.)
| | - Tadeusz Wierzchoń
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; (T.B.); (E.C.); (D.M.); (J.S.); (T.W.)
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Yousaf M, Iqbal T, Afsheen S, Riaz KN, Al-Zaqri N, Warad I, Ahmed H, Asghar M, Shafiq M. Effect of TiN-Based Nanostructured Coatings on the Biocompatibility of NiTi Non-ferrous Metallic Alloy by Cathodic Cage Plasma Processing. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02568-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Inhibitory effect of L-Threonine and L-Lysine and influence of surfactant on stainless steel corrosion in artificial body solution. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kasai K, Segawa R, Onodera R, Asakawa S, Hiratsuka M, Hirasawa N. Lactate released from human fibroblasts enhances Ni elution from Ni plate. Toxicology 2021; 453:152723. [PMID: 33596451 DOI: 10.1016/j.tox.2021.152723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/05/2021] [Accepted: 02/09/2021] [Indexed: 11/19/2022]
Abstract
Elution of Ni ions from medical devices induces inflammation and toxicity. We previously reported that elution of Ni ions from Ni wires induced COX-2 expression and increased lactate production, but whether lactate is involved in the further elution of Ni ions remains unclear. In this study, using KMST-6, a human fibroblast cell line, we examined the molecular mechanisms by which Ni ions increase lactate release and the role of lactate in enhancing the elution of Ni ions. When KMST-6 cells were incubated on a Ni plate or stimulated with NiCl2 (1 mM), the expression of glucose transporter 1 (GLUT1), hexokinase 2 (HK2), and lactate dehydrogenase A (LDHA), and the release of lactate were enhanced. The NiCl2 (1 mM)-induced expression of these genes was inhibited by a hypoxia-inducible factor-1α (HIF-1α) inhibitor, PX-478 (10-25 μM). Stimulation of cells with a prolyl hydroxylase domain (PHD) inhibitor, roxadustat, increased the expression of these genes, lactate release, and elution of Ni ions at 10 μM. A monocarboxylate transporter-4 (MCT4) inhibitor, syrosingopine, inhibited lactate release from roxadustat-treated cells and reduced the elution of Ni ions by the cells at 10 μM. Finally, syrosingopine (10 μM) reduced the elution of Ni ions by the cells from the Ni plate. These results suggest that elution of Ni ions from metals promotes the production of lactate via HIF-1α-mediated gene expression and causes further Ni elution. Thus, Ni ions show a positive feedback mechanism of Ni elution, and this step may be potentially targeted to protect against metal elution from metal devices.
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Affiliation(s)
- Koji Kasai
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Ryosuke Segawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Ryo Onodera
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Sanki Asakawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Masahiro Hiratsuka
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Noriyasu Hirasawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan.
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Multi-scale characterization and biological evaluation of composite surface layers produced under glow discharge conditions on NiTi shape memory alloy for potential cardiological application. Micron 2018; 114:14-22. [PMID: 30056255 DOI: 10.1016/j.micron.2018.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/19/2018] [Indexed: 11/24/2022]
Abstract
NiTi shape memory alloys are characterized by relatively good biocompatibility primarily thanks to their ability to self-passivate. However, before they can be used as medical implants for long term use, they need to undergo treatment aimed at producing layers on their surface that are superior to spontaneously formed oxide layers and that would increase their resistance to corrosion, limit nickel ion release from the surface (metallosis) and have the capability to shape their biological properties depending on the application. Furthermore, cardiac implants require addressing the issue of blood clotting on the surface. Treatment in glow-discharge low temperature plasma makes it possible to produce titanium layers with a structure and properties that are controlled via process parameters. In addition, antithrombogenic properties can be improved by depositing a carbon coating via the RFCVD process. The aim of the study was to investigate the structure, surface topography, adhesive properties, wettability, surface free energy and evaluate metallosis after producing TiO2 and a-C:N:H + TiO2 composite layers on NiTi alloy. The capabilities of AFM microscopes in studying the adhesive properties of a surface were also highlighted in the study. The study shows that the produced surface layers are capable of significantly reducing metallosis. Furthermore, in contrast to NiTi in its initial state, layers of nanocrystalline TiO2 titanium oxide (rutile) with a homogeneous structure demonstrate greater adhesion strength and more developed surface in the microscale, which facilitates the formation of an a-C:N:H coating. Therefore the formation of a coating of a-C:N:H amorphous carbon on NiTi alloy that has previously been oxidised in low-temperature plasma may prove to be a favourable solution in terms of using NiTi alloy to produce cardiac implants.
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Witkowska J, Sowińska A, Czarnowska E, Płociński T, Rajchel B, Tarnowski M, Wierzchoń T. Structure and properties of composite surface layers produced on NiTi shape memory alloy by a hybrid method. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:110. [PMID: 30019236 PMCID: PMC6061091 DOI: 10.1007/s10856-018-6118-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/04/2018] [Indexed: 06/08/2023]
Abstract
A hybrid process that combines oxidation under glow-discharge conditions with ion beam-assisted deposition (IBAD) has been applied to mechanically polished NiTi shape memory alloy in order to produce composite surface layers consisting of a TiO2 layer and an external carbon coating with an addition of silver. The produced surface layers a-C(Ag) + TiO2 type have shown increased surface roughness, improved corrosion resistance, altered wettability, and surface free energy, as well as reduced platelet adhesion, aggregation, and activation in comparison to NiTi alloy in initial state. Such characteristics can be of great benefit for cardiac applications.
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Affiliation(s)
- Justyna Witkowska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland.
| | - Agnieszka Sowińska
- Pathology Department, Children's Memorial Health Institute, Dzieci Polskich 20, 04-730, Warsaw, Poland
| | - Elżbieta Czarnowska
- Pathology Department, Children's Memorial Health Institute, Dzieci Polskich 20, 04-730, Warsaw, Poland
| | - Tomasz Płociński
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland
| | - Bogusław Rajchel
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342, Cracow, Poland
| | - Michał Tarnowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland
| | - Tadeusz Wierzchoń
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland
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Witkowska J, Sowińska A, Czarnowska E, Płociński T, Kamiński J, Wierzchoń T. Hybrid a-CNH+TiO 2+TiN-type surface layers produced on NiTi shape memory alloy for cardiovascular applications. Nanomedicine (Lond) 2017; 12:2233-2244. [PMID: 28818003 DOI: 10.2217/nnm-2017-0092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
AIM The goal was to improve the properties of NiTi shape memory alloy to make it suitable for cardiac applications. For this purpose, a hybrid a-CNH+TiO2+TiN-type surface layer was produced on NiTi alloy and characterized. MATERIALS & METHODS The NiTi alloy subjected to hybrid process combining low-temperature oxynitriding under glow discharge conditions and radio frequency chemical vapor deposition process was examined for microstructure, surface topography, corrosion resistance, wettability and surface-free energy, Ni ion release and platelets adhesion, aggregation and activation. RESULTS The hybrid surface layers showed slightly increased surface roughness, better corrosion resistance, a more hydrophobic nature, decreased surface free energy, smaller release of nickel ions and reduced platelets activation. CONCLUSION The produced layers could expand the range of NiTi medical applications.
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Affiliation(s)
- Justyna Witkowska
- Faculty of Materials Science & Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Agnieszka Sowińska
- Pathology Department, Children's Memorial Health Institute, Warsaw, Poland
| | | | - Tomasz Płociński
- Faculty of Materials Science & Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Janusz Kamiński
- Faculty of Materials Science & Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Tadeusz Wierzchoń
- Faculty of Materials Science & Engineering, Warsaw University of Technology, Warsaw, Poland
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Prasad K, Bazaka O, Chua M, Rochford M, Fedrick L, Spoor J, Symes R, Tieppo M, Collins C, Cao A, Markwell D, Ostrikov KK, Bazaka K. Metallic Biomaterials: Current Challenges and Opportunities. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E884. [PMID: 28773240 PMCID: PMC5578250 DOI: 10.3390/ma10080884] [Citation(s) in RCA: 197] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/14/2017] [Accepted: 07/25/2017] [Indexed: 11/16/2022]
Abstract
Metallic biomaterials are engineered systems designed to provide internal support to biological tissues and they are being used largely in joint replacements, dental implants, orthopaedic fixations and stents. Higher biomaterial usage is associated with an increased incidence of implant-related complications due to poor implant integration, inflammation, mechanical instability, necrosis and infections, and associated prolonged patient care, pain and loss of function. In this review, we will briefly explore major representatives of metallic biomaterials along with the key existing and emerging strategies for surface and bulk modification used to improve biointegration, mechanical strength and flexibility of biometals, and discuss their compatibility with the concept of 3D printing.
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Affiliation(s)
- Karthika Prasad
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organization, P.O. Box 218, Lindfield, NSW 2070, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Olha Bazaka
- College of Science and Engineering, Technology and Engineering, James Cook University, Townsville, QLD 4810, Australia.
| | - Ming Chua
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Madison Rochford
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Liam Fedrick
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Jordan Spoor
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Richard Symes
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Marcus Tieppo
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Cameron Collins
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Alex Cao
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - David Markwell
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Kostya Ken Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organization, P.O. Box 218, Lindfield, NSW 2070, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Kateryna Bazaka
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organization, P.O. Box 218, Lindfield, NSW 2070, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- College of Science and Engineering, Technology and Engineering, James Cook University, Townsville, QLD 4810, Australia.
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Markhoff J, Krogull M, Schulze C, Rotsch C, Hunger S, Bader R. Biocompatibility and Inflammatory Potential of Titanium Alloys Cultivated with Human Osteoblasts, Fibroblasts and Macrophages. MATERIALS 2017; 10:ma10010052. [PMID: 28772412 PMCID: PMC5344603 DOI: 10.3390/ma10010052] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/07/2016] [Accepted: 01/04/2017] [Indexed: 12/18/2022]
Abstract
The biomaterials used to maintain or replace functions in the human body consist mainly of metals, ceramics or polymers. In orthopedic surgery, metallic materials, especially titanium and its alloys, are the most common, due to their excellent mechanical properties, corrosion resistance, and biocompatibility. Aside from the established Ti6Al4V alloy, shape memory materials such as nickel-titanium (NiTi) have risen in importance, but are also discussed because of the adverse effects of nickel ions. These might be reduced by specific surface modifications. In the present in vitro study, the osteoblastic cell line MG-63 as well as primary human osteoblasts, fibroblasts, and macrophages were cultured on titanium alloys (forged Ti6Al4V, additive manufactured Ti6Al4V, NiTi, and Diamond-Like-Carbon (DLC)-coated NiTi) to verify their specific biocompatibility and inflammatory potential. Additive manufactured Ti6Al4V and NiTi revealed the highest levels of metabolic cell activity. DLC-coated NiTi appeared as a suitable surface for cell growth, showing the highest collagen production. None of the implant materials caused a strong inflammatory response. In general, no distinct cell-specific response could be observed for the materials and surface coating used. In summary, all tested titanium alloys seem to be biologically appropriate for application in orthopedic surgery.
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Affiliation(s)
- Jana Markhoff
- Biomechanics and Implant Technology Laboratory, Department of Orthopaedics, University Medicine Rostock, Doberaner Strasse 142, 18057 Rostock, Germany.
| | - Martin Krogull
- Biomechanics and Implant Technology Laboratory, Department of Orthopaedics, University Medicine Rostock, Doberaner Strasse 142, 18057 Rostock, Germany.
| | - Christian Schulze
- Biomechanics and Implant Technology Laboratory, Department of Orthopaedics, University Medicine Rostock, Doberaner Strasse 142, 18057 Rostock, Germany.
| | - Christian Rotsch
- Department Medical Engineering, Fraunhofer Institute for Machine Tools and Forming Technology IWU, Nöthnitzer Strasse 44, 01187 Dresden, Germany.
| | - Sandra Hunger
- Department Medical Engineering, Fraunhofer Institute for Machine Tools and Forming Technology IWU, Nöthnitzer Strasse 44, 01187 Dresden, Germany.
| | - Rainer Bader
- Biomechanics and Implant Technology Laboratory, Department of Orthopaedics, University Medicine Rostock, Doberaner Strasse 142, 18057 Rostock, Germany.
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Maleki-Ghaleh H, Hafezi M, Hadipour M, Nadernezhad A, Aghaie E, Behnamian Y, Abu Osman NA. Effect of Tricalcium Magnesium Silicate Coating on the Electrochemical and Biological Behavior of Ti-6Al-4V Alloys. PLoS One 2015; 10:e0138454. [PMID: 26383641 PMCID: PMC4575114 DOI: 10.1371/journal.pone.0138454] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 08/31/2015] [Indexed: 11/23/2022] Open
Abstract
In the current study, a sol-gel-synthesized tricalcium magnesium silicate powder was coated on Ti-6Al-4V alloys using plasma spray method. Composition of feed powder was evaluated by X-ray diffraction technique before and after the coating process. Scanning electron microscopy and atomic force microscopy were used to study the morphology of coated substrates. The corrosion behaviors of bare and coated Ti-6Al-4V alloys were examined using potentiodynamic polarization test and electrochemical impedance spectroscopy in stimulated body fluids. Moreover, bare and coated Ti-6Al-4V alloys were characterized in vitro by culturing osteoblast and mesenchymal stem cells for several days. Results demonstrated a meaningful improvement in the corrosion resistance of Ti-6Al-4V alloys coated with tricalcium magnesium silicate compared with the bare counterparts, by showing a decrease in corrosion current density from 1.84 μA/cm2 to 0.31 μA/cm2. Furthermore, the coating substantially improved the bioactivity of Ti-6Al-4Valloys. Our study on corrosion behavior and biological response of Ti-6Al-4V alloy coated by tricalcium magnesium silicate proved that the coating has considerably enhanced safety and applicability of Ti-6Al-4V alloys, suggesting its potential use in permanent implants and artificial joints.
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Affiliation(s)
| | - Masoud Hafezi
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Biomaterials Group, Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Alborz, Iran
- * E-mail: (MH); (NAAO)
| | - Mohammadreza Hadipour
- Department of Biomaterials, Science and Research Branch, Islamic Azad University, Yazd, Iran
| | - Ali Nadernezhad
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul, Turkey
| | - Ermia Aghaie
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Yashar Behnamian
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Noor Azuan Abu Osman
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- * E-mail: (MH); (NAAO)
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Hajizadeh K, Maleki-Ghaleh H, Arabi A, Behnamian Y, Aghaie E, Farrokhi A, Hosseini MG, Fathi MH. Corrosion and biological behavior of nanostructured 316L stainless steel processed by severe plastic deformation. SURF INTERFACE ANAL 2015. [DOI: 10.1002/sia.5806] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- K. Hajizadeh
- Faculty of Materials Engineering; Sahand University of Technology; Tabriz Iran
| | - H. Maleki-Ghaleh
- Faculty of Materials Engineering; Sahand University of Technology; Tabriz Iran
| | - A. Arabi
- Department of Chemistry; Payame Noor University (PNU); Tehran Iran
| | - Y. Behnamian
- Department of Chemical and Materials Engineering; University of Alberta; Edmonton Alberta Canada
| | - E. Aghaie
- Department of Chemical and Materials Engineering; University of Alberta; Edmonton Alberta Canada
| | - A. Farrokhi
- Faculty of Materials Engineering; Sahand University of Technology; Tabriz Iran
| | - M. G. Hosseini
- Electrochemistry Research Laboratory, Department of Physical Chemistry, Chemistry Faculty; University of Tabriz; Tabriz Iran
| | - M. H. Fathi
- Biomaterials Research Group, Department of Materials Engineering; Isfahan University of Technology; Isfahan Iran
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Mandracci P, Mussano F, Ceruti P, Pirri CF, Carossa S. Reduction of bacterial adhesion on dental composite resins by silicon-oxygen thin film coatings. ACTA ACUST UNITED AC 2015; 10:015017. [PMID: 25634298 DOI: 10.1088/1748-6041/10/1/015017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Adhesion of bacteria on dental materials can be reduced by modifying the physical and chemical characteristics of their surfaces, either through the application of specific surface treatments or by the deposition of thin film coatings. Since this approach does not rely on the use of drugs or antimicrobial agents embedded in the materials, its duration is not limited by their possible depletion. Moreover it avoids the risks related to possible cytotoxic effects elicited by antibacterial substances released from the surface and diffused in the surrounding tissues. In this work, the adhesion of Streptococcus mutans and Streptococcus mitis was studied on four composite resins, commonly used for manufacturing dental prostheses. The surfaces of dental materials were modified through the deposition of a-SiO(x) thin films by plasma enhanced chemical vapor deposition. The chemical bonding structure of the coatings was analyzed by Fourier-transform infrared spectroscopy. The morphology of the dental materials before and after the coating deposition was assessed by means of optical microscopy and high-resolution mechanical profilometry, while their wettability was investigated by contact angle measurements. The sample roughness was not altered after coating deposition, while a noticeable increase of wettability was detected for all the samples. Also, the adhesion of S. mitis decreased in a statistically significant way on the coated samples, when compared to the uncoated ones, which did not occur for S. mutans. Within the limitations of this study, a-SiO(x) coatings may affect the adhesion of bacteria such as S. mitis, possibly by changing the wettability of the composite resins investigated.
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Affiliation(s)
- Pietro Mandracci
- Politecnico di Torino, Department of Applied Science and Technology - Materials and Microsystems Laboratory (ChiLab), corso Duca degli Abruzzi 24, I-10129, Torino, Italy
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