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Sarraf M, Nasiri-Tabrizi B, Yeong CH, Madaah Hosseini HR, Saber-Samandari S, Basirun WJ, Tsuzuki T. Mixed oxide nanotubes in nanomedicine: A dead-end or a bridge to the future? CERAMICS INTERNATIONAL 2021; 47:2917-2948. [PMID: 32994658 PMCID: PMC7513735 DOI: 10.1016/j.ceramint.2020.09.177] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 05/12/2023]
Abstract
Nanomedicine has seen a significant rise in the development of new research tools and clinically functional devices. In this regard, significant advances and new commercial applications are expected in the pharmaceutical and orthopedic industries. For advanced orthopedic implant technologies, appropriate nanoscale surface modifications are highly effective strategies and are widely studied in the literature for improving implant performance. It is well-established that implants with nanotubular surfaces show a drastic improvement in new bone creation and gene expression compared to implants without nanotopography. Nevertheless, the scientific and clinical understanding of mixed oxide nanotubes (MONs) and their potential applications, especially in biomedical applications are still in the early stages of development. This review aims to establish a credible platform for the current and future roles of MONs in nanomedicine, particularly in advanced orthopedic implants. We first introduce the concept of MONs and then discuss the preparation strategies. This is followed by a review of the recent advancement of MONs in biomedical applications, including mineralization abilities, biocompatibility, antibacterial activity, cell culture, and animal testing, as well as clinical possibilities. To conclude, we propose that the combination of nanotubular surface modification with incorporating sensor allows clinicians to precisely record patient data as a critical contributor to evidence-based medicine.
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Key Words
- ALP, Alkaline Phosphatase
- APH, Anodization-Cyclic Precalcification-Heat Treatment
- Ag2O NPs, Silver Oxide Nanoparticles
- AgNPs, Silver Nanoparticles
- Anodization
- BIC, Bone-Implant Contact
- Bioassays
- CAGR, Compound Annual Growth Rate
- CT, Computed Tomography
- DMF, Dimethylformamide
- DMSO, Dimethyl Sulfoxide
- DRI, Drug-Releasing Implants
- E. Coli, Escherichia Coli
- ECs, Endothelial Cells
- EG, Ethylene Glycol
- Electrochemistry
- FA, Formamide
- Fe2+, Ferrous Ion
- Fe3+, Ferric Ion
- Fe3O4, Magnetite
- GEP, Gene Expression Programming
- GO, Graphene Oxide
- HA, Hydroxyapatite
- HObs, Human Osteoblasts
- HfO2 NTs, Hafnium Oxide Nanotubes
- IMCs, Intermetallic Compounds
- LEDs, Light emitting diodes
- MEMS, Microelectromechanical Systems
- MONs, Mixed Oxide Nanotubes
- MOPSO, Multi-Objective Particle Swarm Optimization
- MSCs, Mesenchymal Stem Cells
- Mixed oxide nanotubes
- NMF, N-methylformamide
- Nanomedicine
- OPC1, Osteo-Precursor Cell Line
- PSIs, Patient-Specific Implants
- PVD, Physical Vapor Deposition
- RF, Radio-Frequency
- ROS, Radical Oxygen Species
- S. aureus, Staphylococcus Aureus
- S. epidermidis, Staphylococcus Epidermidis
- SBF, Simulated Body Fluid
- TiO2 NTs, Titanium Dioxide Nanotubes
- V2O5, Vanadium Pentoxide
- VSMCs, Vascular Smooth Muscle Cells
- XPS, X-ray Photoelectron Spectroscopy
- ZrO2 NTs, Zirconium Dioxide Nanotubes
- hASCs, Human Adipose-Derived Stem Cells
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Affiliation(s)
- Masoud Sarraf
- Centre of Advanced Materials, Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Materials Science and Engineering Department, Sharif University of Technology, P.O. Box 11155-9466, Azadi Avenue, Tehran, Iran
| | - Bahman Nasiri-Tabrizi
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
- New Technologies Research Center, Amirkabir University of Technology, Tehran, Iran
| | - Chai Hong Yeong
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Hamid Reza Madaah Hosseini
- Materials Science and Engineering Department, Sharif University of Technology, P.O. Box 11155-9466, Azadi Avenue, Tehran, Iran
| | | | - Wan Jefrey Basirun
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Takuya Tsuzuki
- Research School of Electrical Energy and Materials Engineering, College of Engineering and Computer Science, Australian National University, Canberra, 2601, Australia
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Wang S, Wu D, She H, Wu M, Shu D, Dong A, Lai H, Sun B. Design of high-ductile medium entropy alloys for dental implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 113:110959. [PMID: 32487381 DOI: 10.1016/j.msec.2020.110959] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 11/18/2022]
Abstract
Developing new materials with high strength and ductility, low modulus and high biocompatibility is a continuing demand in the field of surgical implants. Inspired by the high-entropy design philosophy, two medium entropy alloys (MEAs), i.e. equiatomic TiZrHf and equi-weight Ti40Zr20Hf10Nb20Ta10 were designed and their mechanical properties and biocompatibility were assessed. Both the single-phase hexagonal close-packed (HCP) structured TiZrHf alloy and the single-phase body-centered cubic (BCC) structured Ti40Zr20Hf10Nb20Ta10 alloy show high strength-ductility combinations close to commercial Ti-6Al-4V wrought alloy and remarkably lower young's modulus than commercial pure titanium (CP-Ti) and Ti-6Al-4V. From the aspects of adhesion, proliferation, toxicity and related gene expression of human gingival fibroblasts (HGFs), the Ti40Zr20Hf10Nb20Ta10 alloy exhibits distinctively better biocompatibility than that of CP-Ti while the TiZrHf shows only slightly better biocompatibility as compared with CP-Ti. These results indicate that these two ductile MEAs are potential candidates for dental application.
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Affiliation(s)
- Shubin Wang
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dongle Wu
- Department of Dental Implantology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Huan She
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Dental Implantology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Mingxu Wu
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Da Shu
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Anping Dong
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hongchang Lai
- Department of Dental Implantology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China.
| | - Baode Sun
- Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Capellato P, Silva G, Popat K, Simon‐Walker R, Alves Claro AP, Zavaglia C. Cell investigation into the biocompatibility of adult human dermal fibroblasts with PCL nanofibers/TiO
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nanotubes on the surface of Ti–30Ta alloy for biomedical applications. Artif Organs 2020; 44:877-882. [DOI: 10.1111/aor.13713] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 03/13/2020] [Accepted: 04/16/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Patrícia Capellato
- Faculty of Materials Engineering Unifei‐ Federal University of Itajubá Itajuba Brazil
| | - Gilbert Silva
- Faculty of Materials Engineering Unifei‐ Federal University of Itajubá Itajuba Brazil
| | - Ketul Popat
- Faculty of Materials Engineering Unifei‐ Federal University of Itajubá Itajuba Brazil
| | - Rachael Simon‐Walker
- Faculty of Materials Engineering Unifei‐ Federal University of Itajubá Itajuba Brazil
| | - Ana Paula Alves Claro
- Faculty of Materials Engineering Unifei‐ Federal University of Itajubá Itajuba Brazil
| | - Cecilia Zavaglia
- Faculty of Materials Engineering Unifei‐ Federal University of Itajubá Itajuba Brazil
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Gutiérrez Moreno JJ, Panagiotopoulos NT, Evangelakis GA, Lekka CE. Electronic Origin of α″ to β Phase Transformation in Ti-Nb-Based Thin Films upon Hf Microalloying. MATERIALS (BASEL, SWITZERLAND) 2020; 13:ma13061288. [PMID: 32178419 PMCID: PMC7142957 DOI: 10.3390/ma13061288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 06/10/2023]
Abstract
We present results on thin Ti-Nb-based films containing Hf at various concentrations grown by magnetron sputtering. The films exhibit α" patterns at Hf concentrations up to 11 at.%, while at 16 at.% Hf, the β-phase emerges as a stable structure. These findings were consolidated by ab initio calculations, according to which the α"-β transformation is manifested in the calculation of the electronic band energies for Hf contents between 11 and 18 at.%. It turns out that the β-phase transition originates from the Hf 5d contributions at the Fermi level and the Hf 6s hybridizations at low energies in the electronic density of states. Bonding-anti-bonding first neighbor features existing in the shifted plane destabilize the α″-phase, especially at high Hf concentrations, while the covalent-like features in the first neighborhood stabilize the corresponding plane of the β-phase. Thin films measurements and bulk total energy calculations agree that the lattice constants of both α″ and β phases increase upon Hf substitution. These results are important for the understanding of β-Ti-based alloys formation mechanisms and can be used for the design of suitable biocompatible materials.
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Affiliation(s)
| | | | | | - Christina E. Lekka
- Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece
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Herranz-Diez C, Gil FJ, Guillem-Marti J, Manero JM. Mechanical and physicochemical characterization along with biological interactions of a new Ti25Nb21Hf alloy for bone tissue engineering. J Biomater Appl 2015; 30:171-81. [DOI: 10.1177/0885328215577524] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nowadays, one of the main challenges in metal implants for bone substitution is the achievement of an elastic modulus close to that of human cortical bone as well as to provide an adequate interaction with the surrounding tissue avoiding in vivo foreign body reaction. From this perspective, a new Ti-based alloy has been developed with Nb and Hf as alloying elements which are known as non-toxic and with good corrosion properties. The microstructure, mechanical behaviour and the physicochemical properties of this novel titanium alloy have been studied. Relationship of surface chemistry and surface electric charge with protein adsorption and cell adhesion has been evaluated due to its role for understanding the mechanism of biological interactions with tissues. The Ti25Nb21Hf alloy presented a lower elastic modulus than commercial alloys with a superior ultimate strength and yield strength than CP-Ti and very close to Ti6Al4V. It also exhibited good corrosion resistance. Furthermore, the results revealed that it had no cytotoxic effect on rat mesenchymal stem cells and allowed protein adsorption and cell adhesion. The experimental results make this alloy a promising material for bone substitution or for biomedical devices.
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Affiliation(s)
- C Herranz-Diez
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), Barcelona, Spain
| | - FJ Gil
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), Barcelona, Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
- Centre for Research in NanoEngineering (CRNE) – UPC, Barcelona, Spain
| | - J Guillem-Marti
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), Barcelona, Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
- Centre for Research in NanoEngineering (CRNE) – UPC, Barcelona, Spain
| | - JM Manero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), Barcelona, Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
- Centre for Research in NanoEngineering (CRNE) – UPC, Barcelona, Spain
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Qiu KJ, Liu Y, Zhou FY, Wang BL, Li L, Zheng YF, Liu YH. Microstructure, mechanical properties, castability and in vitro biocompatibility of Ti-Bi alloys developed for dental applications. Acta Biomater 2015; 15:254-65. [PMID: 25595472 DOI: 10.1016/j.actbio.2015.01.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 12/19/2014] [Accepted: 01/02/2015] [Indexed: 12/30/2022]
Abstract
In this study, the microstructure, mechanical properties, castability, electrochemical behaviors, cytotoxicity and hemocompatibility of Ti-Bi alloys with pure Ti as control were systematically investigated to assess their potential applications in the dental field. The experimental results showed that, except for the Ti-20Bi alloy, the microstructure of all other Ti-Bi alloys exhibit single α-Ti phase, while Ti-20Bi alloy is consisted of mainly α-Ti phase and a small amount of BiTi2 and BiTi3 phases. The tensile strength, hardness and wear resistance of Ti-Bi alloys were demonstrated to be improved monotonically with the increase of Bi content. The castability test showed that Ti-2Bi alloy increased the castability of pure Ti by 11.7%. The studied Ti-Bi alloys showed better corrosion resistance than pure Ti in both AS (artificial saliva) and ASFL (AS containing 0.2% NaF and 0.3% lactic acid) solutions. The concentrations of both Ti ion and Bi ion released from Ti-Bi alloys are extremely low in AS, ASF (AS containing 0.2% NaF) and ASL (AS containing 0.3% lactic acid) solutions. However, in ASFL solution, a large number of Ti and Bi ions are released. In addition, Ti-Bi alloys produced no significant deleterious effect to L929 cells and MG63 cells, similar to pure Ti, indicating a good in vitro biocompatibility. Besides, both L929 and MG63 cells perform excellent cell adhesion ability on Ti-Bi alloys. The hemolysis test exhibited that Ti-Bi alloys have an ultra-low hemolysis percentage below 1% and are considered nonhemolytic. To sum up, the Ti-2Bi alloy exhibits the optimal comprehensive performance and has great potential for dental applications.
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Affiliation(s)
- K J Qiu
- Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China
| | - Y Liu
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - F Y Zhou
- Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China
| | - B L Wang
- Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China
| | - L Li
- Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China
| | - Y F Zheng
- Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China; Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.
| | - Y H Liu
- General Dental Department, School of Stomatology, Peking University, Beijing 100081, China
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Ti–Ga binary alloys developed as potential dental materials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 34:474-83. [DOI: 10.1016/j.msec.2013.10.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 09/26/2013] [Accepted: 10/01/2013] [Indexed: 11/20/2022]
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8
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Rituerto Sin J, Neville A, Emami N. Corrosion and tribocorrosion of hafnium in simulated body fluids. J Biomed Mater Res B Appl Biomater 2013; 102:1157-64. [DOI: 10.1002/jbm.b.33097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 12/04/2013] [Accepted: 12/10/2013] [Indexed: 11/09/2022]
Affiliation(s)
- J. Rituerto Sin
- Division of Machine Elements, Department of Engineering Sciences and Mathematics; Luleå University of Technology; Luleå Sweden
| | - A. Neville
- Institute of Engineering Thermofluids, Surfaces and Interfaces, School of Mechanical Engineering; University of Leeds; Leeds UK
| | - N. Emami
- Division of Machine Elements, Department of Engineering Sciences and Mathematics; Luleå University of Technology; Luleå Sweden
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Capellato P, Escada ALA, Popat KC, Claro APRA. Interaction between mesenchymal stem cells and Ti-30Ta alloy after surface treatment. J Biomed Mater Res A 2013; 102:2147-56. [PMID: 23893959 DOI: 10.1002/jbm.a.34891] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 07/02/2013] [Accepted: 07/22/2013] [Indexed: 11/09/2022]
Abstract
In this study, in vitro cytocompatibility was investigated in the Ti-30Ta alloy after two kinds of surfaces treatments: alkaline and biomimetic treatment. Each condition was evaluated by scanning electron microscopy/energy-dispersive X-ray spectroscopy. Cellular adhesion, viability, protein expression, morphology, and differentiation were evaluated with Bone marrow stromal cells (MSCs) to investigate the short and long-term cellular response by fluorescence microscope imaging and colorimetric assays techniques. Two treatments exhibited similar results with respect to total protein content and enzyme activity as compared with alloy without treatment. However, it was observed improved of the biomineralization, bone matrix formation, enzyme activity, and MSCs functionality after biomimetic treatment. These results indicate that the biomimetic surface treatment has a high potential for enhanced osseointegration.
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Affiliation(s)
- Patricia Capellato
- Department of Materials, Faculty of Engineering Guaratinguetá, Sao Paulo State University-UNESP, Guaratinguetá, CEP 12516-410, SP, Brazil
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Lin WJ, Wang BL, Qiu KJ, Zhou FY, Li L, Lin JP, Wang YB, Zheng YF. Ti-Ge binary alloy system developed as potential dental materials. J Biomed Mater Res B Appl Biomater 2012; 100:2239-50. [PMID: 22887723 DOI: 10.1002/jbm.b.32793] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 07/11/2012] [Accepted: 07/15/2012] [Indexed: 11/08/2022]
Abstract
As-cast Ti-xGe (x = 2, 5, 10, 20 wt %) binary alloys were produced in this work, and various experiments were carried out to investigate the microstructure, mechanical properties, in vitro electrochemical and immersion corrosion behaviors as well as cytotoxicity with as-cast pure Ti as control, aiming to study the feasibility of Ti-xGe alloy system as potential dental materials. The microstructure of Ti-xGe alloys changes from single α-Ti phase to α-Ti + Ti(5)Ge(3) precipitation phase with the increase of Ge content. Mechanical tests show that Ti-5Ge alloy has the best comprehensive mechanical properties. The corrosion behavior of Ti-xGe alloys in artificial saliva with different NaF and lactic acid addition at 37°C indicates that Ti-2Ge and Ti-5Ge alloys show better corrosion resistance to fluorine-containing solution. The cytotoxicity test indicates that Ti-xGe alloy extracts show no obvious reduction of cell viability to L-929 fibroblasts and MG-63 osteosarcoma cells, similar to pure Ti which is generally acknowledged to be biocompatible. Considering all these results, Ti-2Ge and Ti-5Ge alloys possess the optimal comprehensive performance and might be used as potential dental materials.
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Affiliation(s)
- Wen-Jiao Lin
- Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China
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Zhang B, Wang B, Wang Y, Li L, Zheng Y, Liu Y. Development of Ti-Ag-Fe ternary titanium alloy for dental application. J Biomed Mater Res B Appl Biomater 2011; 100:185-96. [DOI: 10.1002/jbm.b.31937] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Revised: 06/06/2011] [Accepted: 06/25/2011] [Indexed: 11/11/2022]
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Jeong YH, Choe HC, Brantley WA. Corrosion characteristics of anodized Ti-(10-40wt%)Hf alloys for metallic biomaterials use. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:41-50. [PMID: 21104193 DOI: 10.1007/s10856-010-4188-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Accepted: 11/10/2010] [Indexed: 05/30/2023]
Abstract
The effect of anodizing on corrosion resistance of Ti-xHf alloys has been investigated. Ti-xHf alloys were prepared and anodized at 120, 170 and 220 V in 1 M H(3)PO(4) solution, and crystallized at 300 and 500°C. Corrosion experiments were carried out using a potentiostat in 0.15 M NaCl solution at 36.5 ± 1°C. The Ti-xHf alloys exhibited the α' and anatase phases. The pore size on the anodized surface increases as the applied voltage is increased, whereas the pore size decreases as the Hf content is increased. The anodized Ti-xHf alloys exhibited better corrosion resistance than non-anodized Ti-xHf alloys.
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Affiliation(s)
- Yong-Hoon Jeong
- Department of Dental Materials, Research Center of Nano-Interface Activation for Biomaterials, Chosun University, Gwangju, Korea
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Mareci D, Chelariu R, Dan I, Gordin DM, Gloriant T. Corrosion behaviour of β-Ti20Mo alloy in artificial saliva. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:2907-2913. [PMID: 20711847 DOI: 10.1007/s10856-010-4147-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Accepted: 08/03/2010] [Indexed: 05/29/2023]
Abstract
To evaluate the potential of β-Ti20Mo alloy as a dental material, we tested its corrosion behaviour in artificial saliva in comparison to that of cp-Ti. Open-circuit potential (E(OC)), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used as electrochemical methods to characterize the corrosion behaviour of Ti20Mo alloy and cp-Ti, respectively. Corrosion current and passive current densities obtained from the polarization curves showed low values indicating a typical passive behaviour for Ti20Mo alloy. The EIS technique enabled us to study the nature of the passive film formed on the binary Ti20Mo alloy at various imposed potentials. The Bode phase spectra obtained for Ti20Mo alloy in artificial saliva exhibited two-time constants at higher potential (0.5 V, 1.0 V), indicating a two-layer structure. According to our experimental measurements, Ti20Mo alloy appears to possess superior corrosion resistance to that of cp-Ti in artificial saliva.
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Affiliation(s)
- Daniel Mareci
- Gheorghe Asachi Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, 71A D Mangeron Blvd, 700050 Iasi, Romania
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Comparative corrosion study of Ti-Ta alloys for dental applications. Acta Biomater 2009; 5:3625-39. [PMID: 19508903 DOI: 10.1016/j.actbio.2009.05.037] [Citation(s) in RCA: 169] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Revised: 04/27/2009] [Accepted: 05/14/2009] [Indexed: 11/24/2022]
Abstract
Besides other important material features, the corrosion parameters and corrosion products are responsible for limiting the biocompatibility of metallic materials, and can produce undesirable reactions in implant-adjacent and/or more distant tissues. Titanium and some of its alloys are known as being the most biocompatible metallic materials due to their high strength, low modulus, high corrosion resistance in biological media, etc. More recently, Ti-Ta alloys have been developed, and these are expected to become more promising candidates for biomedical and dental applications than commercially pure Ti, Ti-6Al-4V or Ti-6Al-7Nb alloy. The corrosion behavior of the studied Ti-Ta alloys with Ta contents of 30, 40, 50 and 60 wt.% together with the currently used Ti-6Al-7Nb alloy were investigated for dental applications. All alloys were tested by open-circuit potential measurement, linear polarization, potentiodynamic polarization, coulometric zone analysis and electrochemical impedance spectroscopy performed in artificial saliva with different pH, acid lactic and fluoride contents. The passive behavior for all the titanium alloys is observed for artificial saliva, acidified saliva (9.8 gl(-1) lactic acid, pH 2.5) and for fluoridated saliva (1.0 gl(-1) F(-), pH 8). A decrease in corrosion resistance and less protective passive oxide films are observed for all titanium alloys in fluoridated acidified saliva (9.8 gl(-1) lactic acid, 1.0 gl(-1) F(-), pH 2.5) in regard to other electrochemical media used within this work. It is worthy of note that the most important decrease was found for Ti-6Al-7Nb alloy. These conclusions are confirmed by all the electrochemical tests undertaken. However, the results confirm that the corrosion resistance of the studied Ti-Ta alloys in all saliva is better or similar to that of Ti-6Al-7Nb alloy, suggesting that the Ti-Ta alloys have potential for dental applications.
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Mardare AI, Ludwig A, Savan A, Wieck AD, Hassel AW. High-throughput study of the anodic oxidation of Hf–Ti thin films. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.01.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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