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Zhao Q, Xu X, Zheng T, He B, Zhang N, Wang D, Wei J. Magnesium‑phosphorus gel containing oxygen vacancy niobium oxide with photothermal property for treating tumor, preventing infection and facilitating bone generation. BIOMATERIALS ADVANCES 2025; 172:214237. [PMID: 40015103 DOI: 10.1016/j.bioadv.2025.214237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2024] [Revised: 02/05/2025] [Accepted: 02/16/2025] [Indexed: 03/01/2025]
Abstract
It is essential to design multifunctional biomaterials for pro-osteogenesis, rooting out residual tumor cells and resisting infection after surgical resection of bone tumors. Herein, niobium oxide with oxygen vacancy (NbOv) was synthesized through a deoxidation reaction, which exhibited photothermal property because of strong light absorption in near-infrared (NIR) region. Subsequently, magnesium‑phosphorus gel composite (MP) containing NbOv (MPNOv) was fabricated, which also possessed photothermal property that effectively ablated tumor cells and eradicated bacteria under NIR irradiation in vitro. The in vitro experiments confirmed that compared with MP, MPNOv significantly boosted bone mesenchymal stem cells responses (e.g., propagation and osteoblastic differentiation) due to the presence of NbOv with bioactivity. The in vivo experiments demonstrate that MPNOv fostered bone generation and prevented tumor recurrence as well as infection. In short, MPNOv with good biocompatibility and photothermal property as well as pro-osteogenesis served as a multiple functional biomaterial conquered the tri-challenges: bone defect, tumor recurrence, and bacterial infection in bone tumor therapy. Accordingly, as a novel photothermal therapeutic platform, MPNOv with tumor cells/bacteria-eradicating and pro-osteogenesis ability would be applicable for treatment of bone tumors.
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Affiliation(s)
- Qinghui Zhao
- Department of Biobank, National Stem Cell Translational Resource Center, Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China.
| | - Xiao Xu
- Department of Biobank, National Stem Cell Translational Resource Center, Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
| | - Tianhui Zheng
- Department of Biobank, National Stem Cell Translational Resource Center, Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
| | - Bin He
- Department of Biobank, National Stem Cell Translational Resource Center, Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
| | - Naixin Zhang
- Department of Biobank, National Stem Cell Translational Resource Center, Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
| | - Deqiang Wang
- Sclool of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jie Wei
- Sclool of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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2
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Mańkowska E, Mazur M, Kalisz M, Grobelny M, Domaradzki J, Wojcieszak D. Characterization of Structural, Optical, Corrosion, and Mechanical Properties of HfO 2 Thin Films Deposited Using Pulsed DC Magnetron Sputtering. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5005. [PMID: 37512279 PMCID: PMC10381844 DOI: 10.3390/ma16145005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023]
Abstract
Various properties of HfO2, such as hardness, corrosion, or electrical resistance, depend on the method and the conditions of deposition. In this work, a thorough comparison of scarcely investigated mechanical properties of HfO2 thin films deposited with different conditions of reactive magnetron sputtering process is presented. Four thin films were sputtered in processes that varied in plasma ignition method (continuous or sequential) and target-substrate distance. The structural characteristics of the HfO2 thin films were examined using Raman spectroscopy and X-ray diffraction measurements. Furthermore, the optoelectronic properties were determined based on transmittance and current-voltage characteristics. The mechanical properties of the HfO2 thin films were determined using nanoindentation and scratch test. In turn, the corrosion properties were determined by analyzing the voltametric curves. The transparent HfO2 thin films deposited in the continuous process are characterized by better corrosion resistance than the same layer formed in the sequential process, regardless of the target-substrate distance (8 cm or 12 cm). Furthermore, these samples are also characterized by the highest value of Young's modulus and scratch resistance. The combination of good corrosion and scratch resistance could contribute to the new application of HfO2 as a corrosion protective material.
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Affiliation(s)
- Ewa Mańkowska
- Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
| | - Michał Mazur
- Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
| | - Małgorzata Kalisz
- Faculty of Engineering and Economics, Ignacy Mościcki University of Applied Sciences in Ciechanów, Narutowicza 9, 06-400 Ciechanów, Poland
| | - Marcin Grobelny
- Faculty of Technical and Social Sciences, Ignacy Mościcki University of Applied Sciences in Ciechanów, Warszawska 52, 06-500 Mława, Poland
| | - Jarosław Domaradzki
- Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
| | - Damian Wojcieszak
- Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
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Tan J, Li J, Cao B, Wu J, Luo D, Ran Z, Deng L, Li X, Jiang W, Xie K, Wang L, Hao Y. Niobium promotes fracture healing in rats by regulating the PI3K-Akt signalling pathway: An in vivo and in vitro study. J Orthop Translat 2022; 37:113-125. [PMID: 36262960 PMCID: PMC9563354 DOI: 10.1016/j.jot.2022.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/18/2022] [Accepted: 08/18/2022] [Indexed: 10/31/2022] Open
Abstract
Background Stable fixation is crucial in fracture treatment. Currently, optimal fracture fixation devices with osteoinductivity, mechanical compatibility, and corrosion resistance are urgently needed for clinical practice. Niobium (Nb), whose mechanical properties are similar to those of bone tissue, has excellent biocompatibility and corrosion resistance, so it has the potential to be the most appropriate fixation material for internal fracture treatment. However, not much attention has been paid to the use of Nb in the area of clinical implants. Yet its role and mechanism of promoting fracture healing remain unclear. Hence, this study aims at elucidating on the effectiveness of Nb by systematically evaluating its osteogenic performance via in vivo and ex vivo tests. Methods Systematic in vivo and in vitro experiments were conducted to evaluate the osteogenic properties of Nb. In vitro experiments, the biocompatibility and osteopromoting activity of Nb were assessed. And the osteoinductive activity of Nb was assessed by alizarin red, ALP staining and PCR test. In vivo experiments, the effectiveness and biosafety of Nb in promoting fracture healing were evaluated using a rat femoral fracture model. Through the analysis of gene sequencing results of bone scab tissues, the upregulation of PI3K-Akt pathway expression was detected and it was verified by histochemical staining and WB experiments. Results Experiments in this study had proved that Nb had excellent in-vitro cell adhesion and proliferation-promoting effects without cytotoxicity. In addition, ALP activity, alizarin red staining and semi-quantitative analysis in the Nb group had indicated its profound impact on enhancing osteogenic differentiation of MC3T3-E1 cells. We also found that the use of Nb implants can accelerate fracture healing compared to that with Ti6Al4V using an animal model of femur fracture in rats, and the biosafety of Nb was confirmed in vivo via histological evaluation. Furthermore, we found that the osteogenic effects of Nb were achieved through activation of the PIK/Akt3 signalling pathway. Conclusion As is shown in the present research, Nb possessed excellent biosafety in clinical implants and accelerated fracture healing by activating the PI3K-Akt signalling pathway, which had good prospects for clinical translation, and it can replace titanium alloy as a material for new functional implants.
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Affiliation(s)
- Jia Tan
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China
| | - Jiaxin Li
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Bojun Cao
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China
| | - Junxiang Wu
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China
| | - Dinghao Luo
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China
| | - Zhaoyang Ran
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China
| | - Liang Deng
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China
| | - Xiaoping Li
- Ningxia Orient Ta Ind Co, 119, Yejin Road, Dawukou District, Shizuishan, Ningxia, 753000, PR China
| | - Wenbo Jiang
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China
| | - Kai Xie
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China,Corresponding author. Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Lei Wang
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China,Corresponding author. Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Yongqiang Hao
- Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Jin Zun Road No. 115, 200011, Shanghai, China,Corresponding author. Shanghai Key Laboratory of Orthopaedic Implants Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
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Safavi MS, Walsh FC, Visai L, Khalil-Allafi J. Progress in Niobium Oxide-Containing Coatings for Biomedical Applications: A Critical Review. ACS OMEGA 2022; 7:9088-9107. [PMID: 35356687 PMCID: PMC8944537 DOI: 10.1021/acsomega.2c00440] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/01/2022] [Indexed: 05/11/2023]
Abstract
Typically, pure niobium oxide coatings are deposited on metallic substrates, such as commercially pure Ti, Ti6Al4 V alloys, stainless steels, niobium, TiNb alloy, and Mg alloys using techniques such as sputter deposition, sol-gel deposition, anodizing, and wet plasma electrolytic oxidation. The relative advantages and limitations of these coating techniques are considered, with particular emphasis on biomedical applications. The properties of a wide range of pure and modified niobium oxide coatings are illustrated, including their thickness, morphology, microstructure, elemental composition, phase composition, surface roughness and hardness. The corrosion resistance, tribological characteristics and cell viability/proliferation of the coatings are illustrated using data from electrochemical, wear resistance and biological cell culture measurements. Critical R&D needs for the development of improved future niobium oxide coatings, in the laboratory and in practice, are highlighted.
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Affiliation(s)
- Mir Saman Safavi
- Research
Center for Advanced Materials, Faculty of Materials Engineering, Sahand University of Technology, 513351996 Tabriz, Iran
- Molecular
Medicine Department (DMM), Center for Health Technologies (CHT), UdR
INSTM, University of Pavia, Via Taramelli 3/B, 27100 Pavia, Italy
| | - F. C. Walsh
- Electrochemical
Engineering Laboratory & National Centre for Advanced Tribology,
Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Livia Visai
- Molecular
Medicine Department (DMM), Center for Health Technologies (CHT), UdR
INSTM, University of Pavia, Via Taramelli 3/B, 27100 Pavia, Italy
- Medicina
Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, 27100 Pavia, Italy
| | - Jafar Khalil-Allafi
- Research
Center for Advanced Materials, Faculty of Materials Engineering, Sahand University of Technology, 513351996 Tabriz, Iran
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Balhaddad AA, Garcia IM, Mokeem L, Alsahafi R, Collares FM, Sampaio de Melo MA. Metal Oxide Nanoparticles and Nanotubes: Ultrasmall Nanostructures to Engineer Antibacterial and Improved Dental Adhesives and Composites. Bioengineering (Basel) 2021; 8:146. [PMID: 34677219 PMCID: PMC8533246 DOI: 10.3390/bioengineering8100146] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 11/16/2022] Open
Abstract
Advances in nanotechnology have unlocked exclusive and relevant capabilities that are being applied to develop new dental restorative materials. Metal oxide nanoparticles and nanotubes perform functions relevant to a range of dental purposes beyond the traditional role of filler reinforcement-they can release ions from their inorganic compounds damaging oral pathogens, deliver calcium phosphate compounds, provide contrast during imaging, protect dental tissues during a bacterial acid attack, and improve the mineral content of the bonding interface. These capabilities make metal oxide nanoparticles and nanotubes useful for dental adhesives and composites, as these materials are the most used restorative materials in daily dental practice for tooth restorations. Secondary caries and material fractures have been recognized as the most common routes for the failure of composite restorations and bonding interface in the clinical setting. This review covers the significant capabilities of metal oxide nanoparticles and nanotubes incorporated into dental adhesives and composites, focusing on the novel benefits of antibacterial properties and how they relate to their translational applications in restorative dentistry. We pay close attention to how the development of contemporary antibacterial dental materials requires extensive interdisciplinary collaboration to accomplish particular and complex biological tasks to tackle secondary caries. We complement our discussion of dental adhesives and composites containing metal oxide nanoparticles and nanotubes with considerations needed for clinical application. We anticipate that readers will gain a complete picture of the expansive possibilities of using metal oxide nanoparticles and nanotubes to develop new dental materials and inspire further interdisciplinary development in this area.
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Affiliation(s)
- Abdulrahman A. Balhaddad
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia
- Program in Dental Biomedical Science, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA;
| | - Isadora M. Garcia
- Dental Materials Department, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre 90035-003, RS, Brazil; (I.M.G.); (F.M.C.)
| | - Lamia Mokeem
- Program in Dental Biomedical Science, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA;
| | - Rashed Alsahafi
- Department of Restorative Dental Sciences, College of Dentistry, Umm Al-Qura University, Makkah 24381, Saudi Arabia;
| | - Fabrício Mezzomo Collares
- Dental Materials Department, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre 90035-003, RS, Brazil; (I.M.G.); (F.M.C.)
| | - Mary Anne Sampaio de Melo
- Program in Dental Biomedical Science, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA;
- Operative Dentistry Division, General Dentistry Department University of Maryland School of Dentistry, Baltimore, MD 21201, USA
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Ge J, Wang F, Xu Z, Shen X, Gao C, Wang D, Hu G, Gu J, Tang T, Wei J. Influences of niobium pentoxide on roughness, hydrophilicity, surface energy and protein absorption, and cellular responses to PEEK based composites for orthopedic applications. J Mater Chem B 2021; 8:2618-2626. [PMID: 32129420 DOI: 10.1039/c9tb02456e] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To improve the bio-performances of polyetheretherketone (PEEK) for orthopedic applications, submicro-particles of niobium pentoxide (Nb2O5) were synthesized using a sol-gel method, and PEEK/Nb2O5 composites (PNC) with a Nb2O5 content of 25v% (PNC25) and 50v% (PNC50) were fabricated by utilizing a process of pressing-sintering. The results showed that the Nb2O5 particles were not only dispersed in the composites but also exposed on the surface of the composites, which formed submicro-structural surfaces. In addition, the hydrophilicity, surface energy, surface roughness and absorption of proteins of the composites were improved with increasing Nb2O5 content. Moreover, the release of Nb ions with the highest concentration of 5.01 × 10-6 mol L-1 from the composite into the medium displayed no adverse effects on cell proliferation and morphology, indicating no cytotoxicity. Furthermore, compared with PEEK, the composites, especially PNC50, obviously stimulated adhesion and proliferation as well as osteogenic differentiation of bone mesenchymal stem cells of rats. The results suggested that the incorporation of Nb2O5 submicro-particles into PEEK produced novel bioactive composites with improved surface properties, which played important roles in regulating cell behaviors. In conclusion, the composites, especially PNC50 with good cytocompatibility and promotion of cellular responses, exhibited great potential as implantable materials for bone repair.
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Affiliation(s)
- Junpeng Ge
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
| | - Fan Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
| | - Zhiyan Xu
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
| | - Xuening Shen
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
| | - Chao Gao
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
| | - Dongliang Wang
- Department of Orthopedic Surgery, Xin-Hua Hospital, Shanghai Jiao-Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China.
| | - Gangfeng Hu
- The First People's Hospital of Xiaoshan District, 199 Shixinnan Road, Hangzhou 311200, Zhejiang, China
| | - Jinlou Gu
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
| | - Tingting Tang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200011, China
| | - Jie Wei
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
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7
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Eduok U. Niobia Nanofiber-Reinforced Protective Niobium Oxide/Acrylate Nanocomposite Coatings. ACS OMEGA 2020; 5:30716-30728. [PMID: 33283120 PMCID: PMC7711932 DOI: 10.1021/acsomega.0c04948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 11/05/2020] [Indexed: 06/12/2023]
Abstract
In the present study, the corrosion resistance of a new niobium oxide/acrylate hybrid nanocomposite coating doped with niobia nanofibers is investigated. Nanofibers were initially synthesized from niobium(V) chloride precursor in a novel autoclave approach before fabricating the base coating from a two-step process involving the syntheses of acrylate resin via free radical polymerization and niobium oxide gel from niobium ethoxide via a sol-gel technique. Variants of the synthesized nanocomposite coating were incorporated with varying concentrations of niobia nanofibers before spin-coating on Q235 steel substrates to inhibit corrosive electrolytic ion percolation and further enhance corrosion resistance when treated with chloride-enriched corrosive media. The corrosion resistance of these nanocomposite coatings increased with nanofiber content up to an optimum concentration due to the corrosion-inhibiting and protective effects of niobium barrier layers within these coatings. The presence of the niobia nanofibers also promoted improved surface contact angle and toughened mechanical strengths.
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Affiliation(s)
- Ubong Eduok
- . Tel: +1 (306) 966 7752. Fax: +1 (306) 966 5427
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8
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Sousa JC, Costa ARM, Lima JC, Arruda SA, Almeida YMB. Crystallization kinetics modeling, thermal properties and biodegradability of poly (ε-caprolactone)/niobium pentoxide and alumina compounds. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03468-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Velo MMAC, Nascimento TRL, Scotti CK, Bombonatti JFS, Furuse AY, Silva VD, Simões TA, Medeiros ES, Blaker JJ, Silikas N, Mondelli RFL. Improved mechanical performance of self-adhesive resin cement filled with hybrid nanofibers-embedded with niobium pentoxide. Dent Mater 2019; 35:e272-e285. [PMID: 31519351 DOI: 10.1016/j.dental.2019.08.102] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/25/2019] [Accepted: 08/20/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVES In this study hybrid nanofibers embedded with niobium pentoxide (Nb2O5) were synthesized, incorporated in self-adhesive resin cement, and their influence on physical-properties was evaluated. METHODS Poly(D,L-lactide), PDLLA cotton-wool-like nanofibers with and without silica-based sol-gel precursors were formulated and spun into submicron fibers via solution blow spinning, a rapid fiber forming technology. The morphology, chemical composition and thermal properties of the spun fibers were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS) and Fourier-transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC), respectively. Produced fibers were combined with a self-adhesive resin cement (RelyX U200, 3M ESPE) in four formulations: (1) U200 resin cement (control); (2) U200+1wt.% PDLLA fibers; (3) U200+1wt.% Nb2O5-filled PDLLA composite fibers and (4) U200+1wt.% Nb2O5/SiO2-filled PDLLA inorganic-organic hybrid fibers. Physical properties were assessed in flexure by 3-point bending (n=10), Knoop microhardness (n=5) and degree of conversion (n=3). Data were analyzed with One-way ANOVA and Tukey's HSD (α=5%). RESULTS Composite fibers formed of PDLLA-Nb2O5 exhibited an average diameter of ∼250nm, and hybrid PDLLA+Nb2O5/SiO2 fibers were slightly larger, ∼300nm in diameter. There were significant differences among formulations for hardness and flexural strength (p<0.05). Degree of conversion of resin cement was not affected for all groups, except for Group 4 (p<0.05). SIGNIFICANCE Hybrid reinforcement nanofibers are promising as fillers for dental materials. The self-adhesive resin cement with PDLLA+Nb2O5 and PDLLA+Nb2O5/SiO2 presented superior mechanical performance than the control group.
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Affiliation(s)
- Marilia M A C Velo
- Bauru School of Dentistry, University of São Paulo-USP, Bauru, SP, Brazil.
| | - Tatiana R L Nascimento
- Materials and Biosystems Laboratory (LAMAB), Department of Materials Engineering (DEMat), Federal University of Paraíba (UFPB), João Pessoa, Brazil; Bio-Active Materials Group, Department of Materials, MSS Tower, The University of Manchester, Manchester, M13 9PL, UK
| | - Cassiana K Scotti
- Bauru School of Dentistry, University of São Paulo-USP, Bauru, SP, Brazil
| | | | - Adilson Y Furuse
- Bauru School of Dentistry, University of São Paulo-USP, Bauru, SP, Brazil
| | - Vinícius D Silva
- Materials and Biosystems Laboratory (LAMAB), Department of Materials Engineering (DEMat), Federal University of Paraíba (UFPB), João Pessoa, Brazil
| | - Thiago A Simões
- Materials and Biosystems Laboratory (LAMAB), Department of Materials Engineering (DEMat), Federal University of Paraíba (UFPB), João Pessoa, Brazil
| | - Eliton S Medeiros
- Materials and Biosystems Laboratory (LAMAB), Department of Materials Engineering (DEMat), Federal University of Paraíba (UFPB), João Pessoa, Brazil
| | - Jonny J Blaker
- Bio-Active Materials Group, Department of Materials, MSS Tower, The University of Manchester, Manchester, M13 9PL, UK
| | - Nikolaos Silikas
- Dentistry, School of Medical Sciences, The University of Manchester, Manchester M13 9PL, UK
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10
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Niobium pentoxide and hydroxyapatite particle loaded electrospun polycaprolactone/gelatin membranes for bone tissue engineering. Colloids Surf B Biointerfaces 2019; 182:110386. [PMID: 31369954 DOI: 10.1016/j.colsurfb.2019.110386] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/17/2019] [Accepted: 07/22/2019] [Indexed: 12/20/2022]
Abstract
Effective methods of accelerating the bone regeneration healing process are in demand for a number of bone-related diseases and trauma. This work developed scaffolds with improved properties for bone tissue engineering by electrospinning composite polycaprolactone-gelatin-hydroxyapatite-niobium pentoxide (PGHANb) membranes. Composite membranes, with average fiber diameters ranging from 123 to 156 nm, were produced by adding hydroxyapatite (HA) and varying concentrations of niobium pentoxide (Nb2O5) particles (0, 3, 7, and 10 wt%) to a polycaprolactone (PCL) and gelatin (GL) matrix prior to electrospinning. The morphology, mechanical, chemical and biological properties of resultant membranes were evaluated. Bioactivity was assessed using simulated body fluid (SBF) and it confirmed that the presence of particles induced the formation of hydroxyapatite crystals on the surface of the membranes. Samples were hydrophilic and cell metabolism results showed that the niobium-containing membranes were non-toxic while improving cell proliferation and differentiation compared to controls. This study demonstrated that electrospun membranes containing HA and Nb2O5 particles have potential to promote cell adhesion and proliferation while exhibiting bioactive properties. PGHANb membranes are promising candidates for bone tissue engineering applications.
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Niobium treated by Plasma Electrolytic Oxidation with calcium and phosphorus electrolytes. J Mech Behav Biomed Mater 2018; 77:347-352. [DOI: 10.1016/j.jmbbm.2017.08.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 08/01/2017] [Accepted: 08/04/2017] [Indexed: 12/11/2022]
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12
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Pereira BL, Lepienski CM, Mazzaro I, Kuromoto NK. Apatite grown in niobium by two-step plasma electrolytic oxidation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:1235-1241. [DOI: 10.1016/j.msec.2016.10.073] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/06/2016] [Accepted: 10/16/2016] [Indexed: 12/25/2022]
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13
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Zhu Y, Gu Y, Qiao S, Zhou L, Shi J, Lai H. Bacterial and mammalian cells adhesion to tantalum-decorated micro-/nano-structured titanium. J Biomed Mater Res A 2016; 105:871-878. [PMID: 27784134 DOI: 10.1002/jbm.a.35953] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 10/18/2016] [Accepted: 10/25/2016] [Indexed: 11/09/2022]
Abstract
Microorganisms are frequently introduced to dental implants during surgery and start the race for the surface with host cells before osseointegration occurs. The aim of the study was to endow implant surfaces with biological functions that reliably select cells over microbes. Nano-structured tantalum (Ta) has exhibited excellent compatibility. Thus, nano-structured Ta films were deposited on the sand-blasted, large grit, and acid-etched (SLA) titanium by the magnetron sputtering method, thus forming hierarchical micro-/nano-structured surfaces. No obvious Ta release confirmed the robustness of the deposited layer probably arising from the stable Ta2 O5 . Moreover, Ta-modified surfaces not only improved the initial adhesion and spreading of rat bone mesenchymal stem cells (rBMSCs), but also exhibited good antibacterial activities towards Streptococcus mutans and Porphyromonas gingivalis. The satisfactory cell-surface interactions on Ta-modified surfaces depended largely on the up-regulation of adhesion-related genes and activation of focal adhesion kinase (FAK), as confirmed by real-time PCR and Western blot. Here, the coculture model was also forwarded to mimic the perioperative bacterial contamination. We found that the adherent cell number and the cell-surface coverage were hampered by bacteria presence on both surfaces. Yet, rBMSCs still attached and spread more readily on Ta-modified surfaces than on SLA titanium surfaces even in coculture with adhering oral pathogens. Our results revealed that Ta-modified micro-/nano-structured surfaces would selectively promote cell-surface rather than bacteria-surface interactions, boding well for the applications for dental implants in possibly infected environments. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 871-878, 2017.
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Affiliation(s)
- Yu Zhu
- Department of Oral Implantology, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Yingxin Gu
- Department of Oral Implantology, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Shichong Qiao
- Department of Oral Implantology, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Linyi Zhou
- Department of Oral Implantology, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Junyu Shi
- Department of Oral Implantology, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Hongchang Lai
- Department of Oral Implantology, Shanghai Key Laboratory of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
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Wojcieszak D, Mazur M, Kalisz M, Grobelny M. Influence of Cu, Au and Ag on structural and surface properties of bioactive coatings based on titanium. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 71:1115-1121. [PMID: 27987668 DOI: 10.1016/j.msec.2016.11.091] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 11/14/2016] [Accepted: 11/23/2016] [Indexed: 12/31/2022]
Abstract
In this work influence of copper, silver and gold additives on structural and surface properties of biologically active thin films based on titanium have been described. Coatings were prepared by magnetron sputtering method. During each process metallic discs (targets) - Ti and the additive (Cu, Ag or Au) were co-sputtered in argon atmosphere. Structural investigation of as-deposited coatings was performed with the aid of XRD and SEM/EDS method. It was found that all prepared thin films were homogenous. Addition of Cu, Ag and Au resulted in nanocrystalline structure. Moreover, influence of these additives on hardness and antibacterial activity of titanium coatings was also studied. Ti-Cu, Ti-Ag and Ti-Au films had lower hardness as-compared to Ti. According to AAS results the difference of their activity was related to the ion migration process. It was found that Ti-Ag and Ti-Au coatings had biocidal effect related to direct contact of their surface with microorganisms. In the case of Ti-Cu antimicrobial activity had direct and indirect nature due to efficient ion migration process from the film surface to the surrounding environment. Functional features of coatings such as wettability and corrosion resistance were also examined and included in the comprehensive analysis.
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Affiliation(s)
- D Wojcieszak
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland
| | - M Mazur
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland
| | - M Kalisz
- Motor Transport Institute, Jagiellonska 80, 03-301 Warsaw, Poland.
| | - M Grobelny
- Motor Transport Institute, Jagiellonska 80, 03-301 Warsaw, Poland
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15
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Li Y, Munir KS, Lin J, Wen C. Titanium-niobium pentoxide composites for biomedical applications. Bioact Mater 2016; 1:127-131. [PMID: 29744401 PMCID: PMC5883992 DOI: 10.1016/j.bioactmat.2016.10.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/17/2016] [Accepted: 10/18/2016] [Indexed: 11/28/2022] Open
Abstract
The strength of titanium scaffolds with the introduction of high porosity decreases dramatically and may become inadequate for load bearing in biomedical applications. To simultaneously meet the requirements of biocompatibility, low elastic modulus and appropriate strength for orthopedic implant materials, it is highly desirable to develop new biocompatible titanium based materials with enhanced strength. In this study, we developed a niobium pentoxide (Nb2O5) reinforced titanium composite via powder metallurgy for biomedical applications. The strength of the Nb2O5 reinforced titanium composites (Ti-Nb2O5) is significantly higher than that of pure titanium. Cell culture results revealed that the Ti-Nb2O5 composite exhibits excellent biocompatibility and cell adhesion. Human osteoblast-like cells grew and spread healthily on the surface of the Ti-Nb2O5 composite. Our study demonstrated that Nb2O5 reinforced titanium composite is a promising implant material by virtue of its high mechanical strength and excellent biocompatibility. Developed novel Ti-Nb2O5 composites by powder metallurgy for biomedical applications. The Ti-Nb2O5 composite shows significantly higher strength than pure titanium. The Ti-Nb2O5 composite exhibits excellent biocompatibility and cell adhesion. The Ti-Nb2O5 composite is a promising implant material.
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Affiliation(s)
- Yuncang Li
- School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Khurram S Munir
- School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Jixing Lin
- Department of Materials Science and Engineering, Jilin University, Changchun, Jilin 130025, China.,Advanced Material Research and Development Center, Zhejiang Industry & Trade Vocational College, Wenzhou, Zhejiang 325003, China
| | - Cuie Wen
- School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
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16
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17
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Surface characterisation and corrosion behaviour of niobium treated in a Ca- and P-containing solution under sparking conditions. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.03.069] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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18
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Influence of Material Composition on Structural and Optical Properties of HfO2-TiO2 Mixed Oxide Coatings. COATINGS 2016. [DOI: 10.3390/coatings6010013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wojcieszak D, Mazur M, Kaczmarek D, Mazur P, Szponar B, Domaradzki J, Kepinski L. Influence of the surface properties on bactericidal and fungicidal activity of magnetron sputtered Ti-Ag and Nb-Ag thin films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:86-95. [PMID: 26952401 DOI: 10.1016/j.msec.2016.01.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 12/03/2015] [Accepted: 01/11/2016] [Indexed: 11/30/2022]
Abstract
In this study the comparative investigations of structural, surface and bactericidal properties of Ti-Ag and Nb-Ag thin films have been carried out. Ti-Ag and Nb-Ag coatings were deposited on silicon and fused silica substrates by magnetron co-sputtering method using innovative multi-target apparatus. The physicochemical properties of prepared thin films were examined with the aid of X-ray diffraction, grazing incidence X-ray diffraction, scanning electron microscopy, atomic force microscopy and X-ray photoelectron spectroscopy methods. Moreover, the wettability of the surface was determined. It was found that both, Ti-Ag and Nb-Ag thin films were nanocrystalline. In the case of Ag-Ti film presence of AgTi3 and Ag phases was identified, while in the structure of Nb-Ag only silver occurred in a crystal form. In both cases the average size of crystallites was ca. 11 nm. Moreover, according to scanning electron microscopy and atomic force microscopy investigations the surface of Nb-Ag thin films was covered with Ag-agglomerates, while Ti-Ag surface was smooth and devoid of silver particles. Studies of biological activity of deposited coatings in contact with Bacillus subtilis, Pseudomonas aeruginosa, Enterococcus hirae, Klebisiella pneumoniae, Escherichia coli, Staphylococcus aureus and Candida albicans were performed. It was found that prepared coatings were bactericidal and fungicidal even in a short term-contact, i.e. after 2 h.
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Affiliation(s)
- D Wojcieszak
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland.
| | - M Mazur
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
| | - D Kaczmarek
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
| | - P Mazur
- Institute of Experimental Physics, University of Wrocław, Max Born 9, 50-204 Wrocław, Poland
| | - B Szponar
- Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wrocław, Poland
| | - J Domaradzki
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
| | - L Kepinski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland
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Lu Y, Wu S, Gan Y, Zhang S, Guo S, Lin J, Lin J. Microstructure, mechanical property and metal release of As-SLM CoCrW alloy under different solution treatment conditions. J Mech Behav Biomed Mater 2015; 55:179-190. [PMID: 26590910 DOI: 10.1016/j.jmbbm.2015.10.019] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 10/20/2015] [Accepted: 10/23/2015] [Indexed: 11/26/2022]
Abstract
In the study, the microstructure, mechanical property and metal release behavior of selective laser melted CoCrW alloys under different solution treatment conditions were systemically investigated to assess their potential use in orthopedic implants. The effects of the solution treatment on the microstructure, mechanical properties and metal release were systematically studied by OM, SEM, XRD, tensile test, and ICP-AES, respectively. The XRD indicated that during the solution treatment the alloy underwent the transformation of γ-fcc to ε-hcp phase; the ε-hcp phase nearly dominated in the alloy when treated at 1200°C following the water quenching; the results from OM, SEM showed that the microstructural change was occurred under different solution treatments; solution at 1150°C with furnace cooling contributed to the formation of larger precipitates at the grain boundary regions, while the size and number of the precipitates was decreased as heated above 1100°C with the water quenching; moreover, the diamond-like structure was invisible at higher solution temperature over 1150°C following water quenching; compared with the furnace cooling, the alloy quenched by water showed excellent mechanical properties and low amount of metal release; as the alloy heated at 1200°C, the mechanical properties of the alloy reached their optimum combination at UTS=1113.6MPa, 0.2%YS=639.5MPa, and E%=20.1%, whilst showed the lower total quantity of metal release. It is suggested that a proper solution treatment is an efficient strategy for improving the mechanical properties and corrosion resistance of As-SLM CoCrW alloy that show acceptable tensile ductility.
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Affiliation(s)
- Yanjin Lu
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China
| | - Songquan Wu
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China
| | - Yiliang Gan
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China
| | - Shuyuan Zhang
- Institute of Metal Research, Chinese Academy of Sciences, China
| | - Sai Guo
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China
| | - Junjie Lin
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China
| | - Jinxin Lin
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China.
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Vechiato-Filho AJ, da Silva Vieira Marques I, Dos Santos DM, Matos AO, Rangel EC, da Cruz NC, Barão VAR. Effect of nonthermal plasma treatment on surface chemistry of commercially-pure titanium and shear bond strength to autopolymerizing acrylic resin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 60:37-44. [PMID: 26706504 DOI: 10.1016/j.msec.2015.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 10/02/2015] [Accepted: 11/03/2015] [Indexed: 10/22/2022]
Abstract
The effect of nonthermal plasma on the surface characteristics of commercially pure titanium (cp-Ti), and on the shear bond strength between an autopolymerizing acrylic resin and cp-Ti was investigated. A total of 96 discs of cp-Ti were distributed into four groups (n=24): Po (no surface treatment), SB (sandblasting), Po+NTP and SB+NTP (methane plasma). Surface characterization was performed through surface energy, surface roughness, scanning microscopy, energy dispersive spectroscopy, and X-ray diffraction tests. Shear bond strength test was conducted immediately and after thermocycling. Surface treatment affected the surface energy and roughness of cp-Ti discs (P<.001). SEM-EDS showed the presence of the carbide thin film. XRD spectra revealed no crystalline phase changes. The SB+NTP group showed the highest bond strength values (6.76±0.70 MPa). Thermocycling reduced the bond strength of the acrylic resin/cp-Ti interface (P<.05), except for Po group. NTP is an effective treatment option for improving the shear bond strength between both materials.
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Affiliation(s)
- Aljomar José Vechiato-Filho
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ. Estadual Paulista - UNESP, Aracatuba, Sao Paulo, Brazil.
| | - Isabella da Silva Vieira Marques
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sao Paulo, Brazil
| | - Daniela Micheline Dos Santos
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ. Estadual Paulista - UNESP, Aracatuba, Sao Paulo, Brazil
| | - Adaias Oliveira Matos
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sao Paulo, Brazil
| | - Elidiane Cipriano Rangel
- Laboratory of Technological Plasmas (LaPTec), Engineering College, Univ. Estadual Paulista - UNESP, Sorocaba, Sao Paulo, Brazil
| | - Nilson Cristino da Cruz
- Laboratory of Technological Plasmas (LaPTec), Engineering College, Univ. Estadual Paulista - UNESP, Sorocaba, Sao Paulo, Brazil
| | - Valentim Adelino Ricardo Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sao Paulo, Brazil
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