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Kobayashi N, Fujii T, Shimamura Y. Unidirectional titanium fiber-reinforced porous titanium with mechanical properties suitable for load-bearing biomaterials. J Mech Behav Biomed Mater 2024; 151:106388. [PMID: 38232669 DOI: 10.1016/j.jmbbm.2024.106388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/26/2023] [Accepted: 01/07/2024] [Indexed: 01/19/2024]
Abstract
Biomaterials for load-bearing implants are expected to exhibit mechanical biocompatibility of low stiffness and high strength for avoiding stress shielding and failure of the implants in vivo, respectively. This study aimed to develop porous titanium (Ti) reinforced with long Ti fibers so that the porous Ti exhibited low Young's modulus and high tensile strength. The unidirectional Ti fiber-reinforced porous Ti with porosities (p) of 40%-58% and volume percentages of Ti fiber (Vf) of 3%-33% has been successfully fabricated via the space holder technique. Mechanical testing revealed that its strength was improved, compared with uniform porous Ti because Ti fibers prevent microscopic damage progress. The porous Ti with p = 40% and Vf = 33% exhibited the strength of 233 MPa and Young's modulus of 26 GPa, which were higher than and comparable to those of natural bones, respectively. Hence, the Ti fiber-reinforced porous Ti exhibited ideal mechanical properties for implant applications.
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Affiliation(s)
- Naoto Kobayashi
- Department of Mechanical Engineering, Shizuoka University, 3-5-1, Johoku, Naka-ku, Hamamatsu, 432-8561, Japan
| | - Tomoyuki Fujii
- Department of Mechanical Engineering, Shizuoka University, 3-5-1, Johoku, Naka-ku, Hamamatsu, 432-8561, Japan.
| | - Yoshinobu Shimamura
- Department of Mechanical Engineering, Shizuoka University, 3-5-1, Johoku, Naka-ku, Hamamatsu, 432-8561, Japan
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Martins Junior JRS, Kuroda PAB, Grandini CR. Investigation of the Chemical Composition, Microstructure, Density, Microhardness, and Elastic Modulus of the New β Ti-50Nb-xMo Alloys for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2024; 17:250. [PMID: 38204102 PMCID: PMC10779851 DOI: 10.3390/ma17010250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
β-type titanium alloys with a body-centered cubic structure are highly useful in orthopedics due to their low elastic modulus, lower than other commonly used alloys such as stainless steel and Co-Cr alloys. The formation of the β phase in titanium alloys is achieved through β-stabilizing elements such as Nb, Mo, and Ta. To produce new β alloys with a low modulus of elasticity, this work aimed to produce our alloy system for biomedical applications (Ti-50Nb-Mo). The alloys were produced by arc-melting and have the following compositions Ti-50Nb-xMo (x = 0, 3, 5, 7, and 12 wt% Mo). The alloys were characterized by density, X-ray diffraction, scanning electron microscopy, microhardness, and elastic modulus. It is worth highlighting that this new set of alloys of the Ti-50Nb-Mo system produced in this study is unprecedented; due to this, there needs to be a report in the literature on the production and structural characterization, hardness, and elastic modulus analyses. The microstructure of the alloys has an exclusively β phase (with bcc crystalline structure). The results show that adding molybdenum considerably increased the microhardness and decreased the elastic modulus, with values around 80 GPa, below the metallic materials used commercially for this type of application. From the produced alloys, Ti-50Nb-12Mo is highlighted due to its lower elastic modulus.
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Affiliation(s)
| | - Pedro Akira Bazaglia Kuroda
- Laboratório de Anelasticidade e Biomateriais, UNESP—Universidade Estadual Paulista, Bauru 17033-360, SP, Brazil;
| | - Carlos Roberto Grandini
- Laboratório de Anelasticidade e Biomateriais, UNESP—Universidade Estadual Paulista, Bauru 17033-360, SP, Brazil;
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Li Q, Li Q, Lu S, Pan D. Spatial Topological Structure Design of Porous Ti-6Al-4V Alloy with Low Modulus and Magnetic Susceptibility. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:3113. [PMID: 38133010 PMCID: PMC10745389 DOI: 10.3390/nano13243113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023]
Abstract
Ti-6Al-4V alloy is widely used as a biomaterial for hard tissue replacement, but its Young's modulus is still higher than that of human bone tissue, which may cause a "stress shielding" effect and lead to implant loosening. In addition, metal implants with low magnetic susceptibility are beneficial for obtaining minimal artifacts in magnetic resonance imaging. To reduce Young's modulus and magnetic susceptibility of Ti-6Al-4V alloy, a series of irregular prismatic porous structure models were designed based on the Voronoi principle, built by changing the irregularity, prism-diameter-to-initial-seed-spacing ratio, and seed number, and studied using finite-element analysis. Porous samples were prepared by selective laser melting and subjected to a compression test and magnetic susceptibility test. The simulation results show that the prism-diameter-to-initial-seed-spacing ratio has the greatest impact on porosity compared with the irregularity and seed number. The simulation-predicted porosity and compression modulus are highly consistent with the measured ones. The irregular prismatic porous Ti-6Al-4V samples exhibit mechanical properties similar to those of human bones and show a magnetic susceptibility of no more than 50% that of compact Ti-6Al-4V. A regulatable irregular prismatic porous structure is feasible for designing porous implants with desirable properties for biomedical applications.
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Affiliation(s)
- Qian Li
- School of Mechanical Engineering, University of Shanghai for Science & Technology, No. 516 Jungong Road, Shanghai 200093, China
| | - Qiang Li
- School of Mechanical Engineering, University of Shanghai for Science & Technology, No. 516 Jungong Road, Shanghai 200093, China
| | - Shasha Lu
- School of Mechanical Engineering, University of Shanghai for Science & Technology, No. 516 Jungong Road, Shanghai 200093, China
| | - Deng Pan
- Materials Genome Institute, Shanghai University, No. 99 Shangda Road, Shanghai 200444, China;
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Ma Y, Liang T, Wang Y, Zhang Q, Hong J. Experimental Investigation of Wave Propagation Characteristics in Entangled Metallic Wire Materials by Acoustic Emission. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4723. [PMID: 37445040 DOI: 10.3390/ma16134723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023]
Abstract
In this paper, the response characteristics of wave propagation in entangled metallic wire materials (EMWMs) are investigated by acoustic emission. The frequency, amplitude of wave emission, and the pre-compression force of the specimen can be adjusted in the experimental setup. EMWM specimens fabricated from stainless steel wires and with different design parameters are tested in this work. The results show that waves of different amplitudes propagate in EMWMs with approximate linear characteristics and the fluctuation coefficient of wave passing ratios is calculated below 15%. The response spectrum of passing waves shows a distinct single-peak characteristic, with the peak response at approximately 14 kHz. The parameters of pre-compression force, porosity, wire diameter, helix diameter, specimen height, and the layered structure of specimens have no significant effect on the frequency characteristics but moderately affect the wave passing ratios. Notably, EMWMs exhibit a lower wave passing ratio (ranging from 0.01 to 0.18) compared to aluminum alloy and natural rubber. The characteristics of response spectrums can be successfully reproduced by the finite element simulation. This work demonstrates EMWMs' potential as an acoustic frequency vibration isolation material, offering excellent performance and engineering design convenience.
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Affiliation(s)
- Yanhong Ma
- Research Institute of Aero-Engine, Beihang University, Beijing 100191, China
| | - Tianyu Liang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Yongfeng Wang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
| | - Qicheng Zhang
- Faculty of Science and Engineering, Swansea University, Swansea SA1 8EN, UK
| | - Jie Hong
- Research Institute of Aero-Engine, Beihang University, Beijing 100191, China
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China
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Li C, Zhou Z. Preparation and characterization of permeability and mechanical properties of three-dimensional porous stainless steel. RSC Adv 2022; 12:28079-28087. [PMID: 36320271 PMCID: PMC9527573 DOI: 10.1039/d2ra03893e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/26/2022] [Indexed: 11/05/2022] Open
Abstract
Porous materials are indispensable in biomedical and chemical catalysis fields, but it is still a challenging task to fabricate them with excellent permeability and mechanical properties at the same time. Herein, a new type of three-dimensional porous stainless steel (3DPSS) was fabricated by compression moulding and vacuum sintering. The pore size distribution, air permeability, and mechanical properties of 3DPSS were studied. The results indicated that the radial air permeability reached 3.1 × 10-11 m2, which was approximately 19.7 times greater than the axial air permeability. Interestingly, the axial compressive strength was 91.3% higher than the radial compressive strength and reached 1249 MPa, which was significantly better than that of conventional porous stainless steel and porous titanium as well as porous high entropy alloys. The main characteristics of 3DPSS fracture were metallurgical bonding surface fracture, necking fracture and shear fracture of the wire mesh. This study provides an effective method for the preparation of three-dimensional porous materials, which is convenient for industrial production. It is of great significance to expand the potential application range of porous materials, in particular in fields requiring comprehensive permeability and mechanical properties.
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Affiliation(s)
- Chaozhong Li
- Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, School of Mechanical and Automotive Engineering, South China University of TechnologyGuangzhou 510640People's Republic of China
| | - Zhaoyao Zhou
- Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, School of Mechanical and Automotive Engineering, South China University of TechnologyGuangzhou 510640People's Republic of China
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Li C, Zhou Z. Air permeability and tensile properties of novel micron-scale gradient porous plates fabricated by rolling and vacuum sintering. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dienel K, Abu-Shahba A, Kornilov R, Björkstrand R, van Bochove B, Snäll J, Wilkman T, Mesimäki K, Meller A, Lindén J, Lappalainen A, Partanen J, Seppänen-Kaijansinkko R, Seppälä J, Mannerström B. Patient-Specific Bioimplants and Reconstruction Plates for Mandibular Defects: Production Workflow and In Vivo Large Animal Model Study. Macromol Biosci 2022; 22:e2100398. [PMID: 35023297 DOI: 10.1002/mabi.202100398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/15/2021] [Indexed: 11/12/2022]
Abstract
A major challenge with extensive craniomaxillofacial bone reconstruction is the limited donor-site availability to reconstruct defects predictably and accurately according to the anatomical shape of the patient. Here, patient-specific composite bioimplants, consisting of cross-linked poly(trimethylene carbonate) (PTMC) networks and β-tricalcium phosphate (β-TCP), were tested in vivo in twelve Göttingen minipigs in a large mandibular continuity defect model. The 25 mm defects were supported by patient-specific titanium reconstruction plates and received either osteoconductive composite bioimplants (PTMC+TCP), neat polymer network bioimplants (PTMC), autologous bone segments (positive control) or were left empty (negative control). Post-operatively, defects treated with bioimplants showed evident ossification at 24 weeks. Histopathologic evaluation revealed that neat PTMC bioimplant surfaces were largely covered with fibrous tissue, while in the PTMC+TCP bioimplants, bone attached directly to the implant surface showing good osteoconduction and histological signs of osteoinductivity. However, PTMC+TCP bioimplants were associated with high incidence of necrosis and infection, possibly due to rapid resorption and/or particle size of the used β-TCP. The study highlights the importance of testing bone regeneration implants in a clinically relevant large animal model and at the in situ reconstruction site, since results on small animal models and studies in non-loadbearing areas do not translate directly. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Kasper Dienel
- Polymer Technology, School of Chemical Engineering, Aalto University, Finland
| | - Ahmed Abu-Shahba
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Finland.,Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tanta University, Egypt
| | - Roman Kornilov
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Finland
| | - Roy Björkstrand
- Department of Mechanical Engineering, Aalto University, Finland
| | - Bas van Bochove
- Polymer Technology, School of Chemical Engineering, Aalto University, Finland
| | - Johanna Snäll
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Finland
| | - Tommy Wilkman
- Department of Oral and Maxillofacial Surgery, Helsinki University Hospital, Helsinki, Finland
| | - Karri Mesimäki
- Department of Oral and Maxillofacial Surgery, Helsinki University Hospital, Helsinki, Finland
| | - Anna Meller
- Laboratory Animal Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Jere Lindén
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.,Finnish Centre for Laboratory Animal Pathology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Anu Lappalainen
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Jouni Partanen
- Department of Mechanical Engineering, Aalto University, Finland
| | | | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Finland
| | - Bettina Mannerström
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Finland
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Abstract
This chapter provides an overview of the growth factors active in bone regeneration and healing. Both normal and impaired bone healing are discussed, with a focus on the spatiotemporal activity of the various growth factors known to be involved in the healing response. The review highlights the activities of most important growth factors impacting bone regeneration, with a particular emphasis on those being pursued for clinical translation or which have already been marketed as components of bone regenerative materials. Current approaches the use of bone grafts in clinical settings of bone repair (including bone grafts) are summarized, and carrier systems (scaffolds) for bone tissue engineering via localized growth factor delivery are reviewed. The chapter concludes with a consideration of how bone repair might be improved in the future.
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Novel design of additive manufactured hollow porous implants. Dent Mater 2020; 36:1437-1451. [PMID: 32962852 DOI: 10.1016/j.dental.2020.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 07/10/2020] [Accepted: 08/29/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Our aim is to examine the mechanical properties of two types of additive manufactured hollow porous dental implants and 6 and 12-week bone ingrowth after insertion in animals. A 3D numerical model is also developed to show detailed tissue differentiation and to provide design guidelines for implants. METHODS The two porous and a commercial dental implant were studied by series of in vitro mechanical tests (three-point bending, torsional, screwing torque, and sawbone pull-out tests). They also evaluated by in vivo animal tests (micro-CT analysis) and ex vivo pull-out tests. Moreover, the mechano-regulation algorithm was implemented by the 3D finite element model to predict the history of tissue differentiation around the implants. RESULTS The results showed that the two porous implants can significantly improve osseointegration after 12-week bone healing. This resulted in good fixation and stability of implants, giving very high maximum pull-out strength 413.1 N and 493.2 N, compared to 245.7 N for the commercial implant. Also, several features were accurately predicted by the mechano-regulation model, such as transversely connected bone formation, and bone resorption occurred in the middle of implants. SIGNIFICANCE Systematic studies on dental implants with multiple approaches, including new design, mechanical tests, animal tests, and numerical modeling, were performed. Two hollow porous implants significantly improved bone ingrowth compared with commercial implants, while maintaining mechanical strength. Also, the numerical model was verified by animal tests. It improved the efficiency of design and reduce the demand for animal sacrifice.
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In Vitro Bone Cell Behavior on Porous Titanium Samples: Influence of Porosity by Loose Sintering and Space Holder Techniques. METALS 2020. [DOI: 10.3390/met10050696] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A great variety of powder metallurgy techniques can produce biomimetic porous titanium structures with similar mechanical properties to host bone tissue. In this work, loose sintering and space holder techniques, two frequently used metallurgical techniques, are compared to evaluate the influences of porosity (content, size, morphology and wall roughness), mechanical properties (stiffness and yield strength) and in-vitro cellular responses (adhesion and proliferation of myoblasts and osteoblasts). These comparisons are made to achieve the best balance between biomechanical and bifunctional behavior of a partial porous implant for cortical bone replacement. Cell adhesion (filopodia presence) and spreading were promoted on both porous surfaces and fully dense substrates (non-porous control surfaces). Porous scaffold samples designed using 50 vol.% NaCl space holder technique had an improved bioactive response over those obtained with the loose sintering technique due to higher roughness and scaffold pore diameter. However, the presence of large and heterogeneous pores compromises the mechanical reliability of the implant. Considering both scenarios, the substrates obtained with 40 vol.% NH4HCO3 and pore size ranges between 100 and 200 μm provide a balanced optimization of size and strength to promote in-vitro osseointegration.
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Effect of CaCl2 on Microstructure of Calciothermic Reduction Products of Ti2O3 to Prepare Porous Titanium. METALS 2018. [DOI: 10.3390/met8090698] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The compound CaCl2 plays a significant role in the process of direct calciothermic reduction of Ti2O3 to prepare porous titanium. In this paper, the effect of CaCl2 on reduction products by calciothermic reduction of Ti2O3 was investigated. Results show that the distribution of CaCl2 in reduction preform influences particle size and morphology differences in reduction products both on the surface and the inside. The CaCl2 is transferred to the surface of the Ti2O3 preform due to its volatilization before and throughout reduction. The content of CaCl2 in the surface zone of Ti2O3 preform is significantly higher than that in the interior during the reduction process, contributing to the formation of large Ti particles with a smooth shape on the surface, and small Ti particles with inherited morphology of Ti2O3 inside. More CaCl2 causes the aggregation of Ti particles to form large Ti particles which are advantageous as they connect and form a more solid porous titanium structure. The presence of a small amount of CaCl2 in the interior also results in the coexistence of small Ti and CaO particles, forming a loose structure with uniform distribution.
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De Witte TM, Fratila-Apachitei LE, Zadpoor AA, Peppas NA. Bone tissue engineering via growth factor delivery: from scaffolds to complex matrices. Regen Biomater 2018; 5:197-211. [PMID: 30094059 PMCID: PMC6077800 DOI: 10.1093/rb/rby013] [Citation(s) in RCA: 283] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 02/06/2023] Open
Abstract
In recent years, bone tissue engineering has emerged as a promising solution to the limitations of current gold standard treatment options for bone related-disorders such as bone grafts. Bone tissue engineering provides a scaffold design that mimics the extracellular matrix, providing an architecture that guides the natural bone regeneration process. During this period, a new generation of bone tissue engineering scaffolds has been designed and characterized that explores the incorporation of signaling molecules in order to enhance cell recruitment and ingress into the scaffold, as well as osteogenic differentiation and angiogenesis, each of which is crucial to successful bone regeneration. Here, we outline and critically analyze key characteristics of successful bone tissue engineering scaffolds. We also explore candidate materials used to fabricate these scaffolds. Different growth factors involved in the highly coordinated process of bone repair are discussed, and the key requirements of a growth factor delivery system are described. Finally, we concentrate on an analysis of scaffold-based growth factor delivery strategies found in the recent literature. In particular, the incorporation of two-phase systems consisting of growth factor-loaded nanoparticles embedded into scaffolds shows great promise, both by providing sustained release over a therapeutically relevant timeframe and the potential to sequentially deliver multiple growth factors.
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Affiliation(s)
- Tinke-Marie De Witte
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Lidy E Fratila-Apachitei
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Amir A Zadpoor
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Nicholas A Peppas
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
- Institute for Biomaterials, Drug Delivery and Regenerative Medicine, The University of Texas at Austin, Austin, TX, USA
- Department of Pediatrics, and Department of Surgery and Perioperative Care, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
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A lithium-containing nanoporous coating on entangled titanium scaffold can enhance osseointegration through Wnt/β-catenin pathway. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:153-164. [DOI: 10.1016/j.nano.2017.09.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/18/2017] [Accepted: 09/15/2017] [Indexed: 01/06/2023]
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Characterisation of porous knitted titanium for replacement of intervertebral disc nucleus pulposus. Sci Rep 2017; 7:16611. [PMID: 29192178 PMCID: PMC5709513 DOI: 10.1038/s41598-017-16863-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 11/16/2017] [Indexed: 01/09/2023] Open
Abstract
Effective restoration of human intervertebral disc degeneration is challenged by numerous limitations of the currently available spinal fusion and arthroplasty treatment strategies. Consequently, use of artificial biomaterial implant is gaining attention as a potential therapeutic strategy. Our study is aimed at investigating and characterizing a novel knitted titanium (Ti6Al4V) implant for the replacement of nucleus pulposus to treat early stages of chronic intervertebral disc degeneration. Specific knitted geometry of the scaffold with a porosity of 67.67 ± 0.824% was used to overcome tissue integration failures. Furthermore, to improve the wear resistance without impairing original mechanical strength, electro-polishing step was employed. Electro-polishing treatment changed a surface roughness from 15.22 ± 3.28 to 4.35 ± 0.87 µm without affecting its wettability which remained at 81.03 ± 8.5°. Subsequently, cellular responses of human mesenchymal stem cells (SCP1 cell line) and human primary chondrocytes were investigated which showed positive responses in terms of adherence and viability. Surface wettability was further enhanced to super hydrophilic nature by oxygen plasma treatment, which eventually caused substantial increase in the proliferation of SCP1 cells and primary chondrocytes. Our study implies that owing to scaffolds physicochemical and biocompatible properties, it could improve the clinical performance of nucleus pulposus replacement.
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Feng P, Peng S, Wu P, Gao C, Huang W, Deng Y, Shuai C. A space network structure constructed by tetraneedlelike ZnO whiskers supporting boron nitride nanosheets to enhance comprehensive properties of poly(L-lacti acid) scaffolds. Sci Rep 2016; 6:33385. [PMID: 27629058 PMCID: PMC5024306 DOI: 10.1038/srep33385] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 08/25/2016] [Indexed: 01/17/2023] Open
Abstract
In this study, the mechanical strength and modulus of poly(L-lacti acid) (PLLA) scaffolds were enhanced with the mechanical properties of boron nitride nanosheets (BNNSs) and tetraneedlelike ZnO whiskers (T-ZnOw). The adhesion and proliferation of cells were improved as well as osteogenic differentiation of stem cells was increased. Their dispersion statues in PLLA matrix were improved through a space network structure constructed by three-dimensional T-ZnOw supporting two-dimensional BNNSs. The results showed that the compressive strength, modulus and Vickers hardness of the scaffolds with incorporation of 1 wt% BNNSs and 7 wt% T-ZnOw together were about 96.15%, 32.86% and 357.19% higher than that of the PLLA scaffolds, respectively. This might be due to the effect of the pull out and bridging of BNNSs and T-ZnOw as well as the crack deflection, facilitating the formation of effective stress transfer between the reinforcement phases and the matrix. Furthermore, incorporation of BNNSs and T-ZnOw together into PLLA scaffolds was beneficial for attachment and viability of MG-63 cells. More importantly, the scaffolds significantly increased proliferation and promoted osteogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs). The enhanced mechanical and biological properties provide the potentials of PLLA/BNNSs/T-ZnOw scaffolds for the application into bone tissue engineering.
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Affiliation(s)
- Pei Feng
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
| | - Shuping Peng
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
- School of Basic Medical Science, Central South University, Changsha 410078, China
| | - Ping Wu
- College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
| | - Wei Huang
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
| | - Youwen Deng
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, the State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
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Jiang G, Li Q, Wang C, Dong J, He G. Characterization and investigation of the deformation behavior of porous magnesium scaffolds with entangled architectured pore channels. J Mech Behav Biomed Mater 2016; 64:139-50. [PMID: 27498424 DOI: 10.1016/j.jmbbm.2016.07.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 06/20/2016] [Accepted: 07/08/2016] [Indexed: 10/21/2022]
Abstract
We report a kind of porous magnesium with entangled architectured pore structure for potential applications in biomedical implant. The pore size, spatial structure and Young׳s modulus of the as-prepared porous Mg are suitable for bone tissue engineering applications. Particularly, with regard to the load-bearing conditions, a new analytical model is employed to investigate its structure and mechanical response under compressive stress based on Gibson-Ashby model. It is found that there are three types of stress-strain behaviors in the large range of porosity from 20% to 80%. When the porosity is larger than an upper critical value, the porous magnesium exhibits densifying behavior with buckling deformation mechanism. When the porosity is smaller than a lower critical value, the porous magnesium exhibits shearing behavior with cracking along the maximum shear stress. Between the two critical porosities, both the buckling deformation and shearing behavior coexist. The upper critical porosity is experimentally determined to be 60% for 270μm pore size and 62% for 400μm pore size, while the lower critical porosity is 40% for 270μm pore size and 42% for 400μm pore size. A new analytical model could be used to accurately predict the mechanical response of the porous magnesium. No matter the calculated critical porosity or yielding stress in a large range of porosity by using the new model are well consistent with the experimental values. All these results could help to provide valuable data for developing the present porous magnesium for potential bio applications.
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Affiliation(s)
- Guofeng Jiang
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qiuyan Li
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Cunlong Wang
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; National Engineering Research Center of Light Alloys Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jie Dong
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; National Engineering Research Center of Light Alloys Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Guo He
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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Schouman T, Schmitt M, Adam C, Dubois G, Rouch P. Influence of the overall stiffness of a load-bearing porous titanium implant on bone ingrowth in critical-size mandibular bone defects in sheep. J Mech Behav Biomed Mater 2016; 59:484-496. [DOI: 10.1016/j.jmbbm.2016.02.036] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/21/2016] [Accepted: 02/28/2016] [Indexed: 11/30/2022]
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Wang Q, Qiao Y, Cheng M, Jiang G, He G, Chen Y, Zhang X, Liu X. Tantalum implanted entangled porous titanium promotes surface osseointegration and bone ingrowth. Sci Rep 2016; 6:26248. [PMID: 27185196 PMCID: PMC4869100 DOI: 10.1038/srep26248] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 04/29/2016] [Indexed: 12/20/2022] Open
Abstract
Porous Ti is considered to be an ideal graft material in orthopaedic and dental surgeries due to its similar spatial structures and mechanical properties to cancellous bone. In this work, to overcome the bioinertia of Ti, Ta-implanted entangled porous titanium (EPT) was constructed by plasma immersion ion implantation &deposition (PIII&D) method. Ca-implanted and unimplanted EPTs were investigated as control groups. Although no difference was found in surface topography and mechanical performances, both Ca- and Ta-implanted groups had better effects in promoting MG-63 cell viability, proliferation, differentiation, and mineralization than those of unimplanted group. The expression of osteogenic-related markers examined by qRT-PCR and western blotting was upregulated in Ca- and Ta-implanted groups. Moreover, Ta-implanted EPT group could reach a higher level of these effects than that of Ca-implanted group. Enhanced osseointegration of both Ca- and Ta-implanted EPT implants was demonstrated through in vivo experiments, including micro-CT evaluation, push-out test, sequential fluorescent labeling and histological observation. However, the Ta-implanted group possessed more stable and continuous osteogenic activity. Our results suggest that Ta-implanted EPT can be developed as one of the highly efficient graft material for bone reconstruction situations.
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Affiliation(s)
- Qi Wang
- Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Yuqin Qiao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Mengqi Cheng
- Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Guofeng Jiang
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Guo He
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yunsu Chen
- Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Xianlong Zhang
- Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
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Liu Y, Jiang G, He G. Enhancement of entangled porous titanium by BisGMA for load-bearing biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 61:37-41. [DOI: 10.1016/j.msec.2015.12.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 11/12/2015] [Accepted: 12/10/2015] [Indexed: 11/25/2022]
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20
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New Ti-Alloys and Surface Modifications to Improve the Mechanical Properties and the Biological Response to Orthopedic and Dental Implants: A Review. BIOMED RESEARCH INTERNATIONAL 2016; 2016:2908570. [PMID: 26885506 PMCID: PMC4738729 DOI: 10.1155/2016/2908570] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/30/2015] [Indexed: 12/14/2022]
Abstract
Titanium implants are widely used in the orthopedic and dentistry fields for many decades, for joint arthroplasties, spinal and maxillofacial reconstructions, and dental prostheses. However, despite the quite satisfactory survival rates failures still exist. New Ti-alloys and surface treatments have been developed, in an attempt to overcome those failures. This review provides information about new Ti-alloys that provide better mechanical properties to the implants, such as superelasticity, mechanical strength, and corrosion resistance. Furthermore, in vitro and in vivo studies, which investigate the biocompatibility and cytotoxicity of these new biomaterials, are introduced. In addition, data regarding the bioactivity of new surface treatments and surface topographies on Ti-implants is provided. The aim of this paper is to discuss the current trends, advantages, and disadvantages of new titanium-based biomaterials, fabricated to enhance the quality of life of many patients around the world.
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Li F, Li J, Xu G, Liu G, Kou H, Zhou L. Fabrication, pore structure and compressive behavior of anisotropic porous titanium for human trabecular bone implant applications. J Mech Behav Biomed Mater 2015; 46:104-14. [DOI: 10.1016/j.jmbbm.2015.02.023] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 02/19/2015] [Accepted: 02/20/2015] [Indexed: 12/01/2022]
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Jiang G, Wang C, Li Q, Dong J, He G. Porous titanium with entangled structure filled with biodegradable magnesium for potential biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 47:142-9. [DOI: 10.1016/j.msec.2014.11.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 10/09/2014] [Accepted: 11/06/2014] [Indexed: 11/24/2022]
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Długoń E, Niemiec W, Frączek-Szczypta A, Jeleń P, Sitarz M, Błażewicz M. Spectroscopic studies of electrophoretically deposited hybrid HAp/CNT coatings on titanium. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:872-875. [PMID: 24997749 DOI: 10.1016/j.saa.2014.06.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 04/17/2014] [Accepted: 06/09/2014] [Indexed: 06/03/2023]
Abstract
Carbon nanotubes deposited on the surface of the metal can be used in a wide variety of applications for modern medicine including: sensors and sensor array devices, electrodes for neural system stimulation, scaffolds for improved healing process for bone defects. Additionally it is debated if deposited on the surface of e.g. endoprosthesis, CNT coating can significantly increase the strength of the tissue/bone joint and stimulate a fast integration of the implant and the tissue. The aim of this paper is the analysis of the electrophoretically deposited nanocomposite coating made of hydroxyapatite nanoparticles and carbon nanotubes on the surface of titanium. The paper concentrates on the analysis of the layer's structure and its bioactivity properties. The nanocomposite films were investigated using Raman Spectroscopy as well as AFM and SEM microscopy. The measurements were conducted at every stage of layer preparation and after bioactivity test. Bioactivity was evaluated by in vitro test in Simulated Body Fluid (SBF, 37°C, for 30days). It was shown that hybrid HAp/CNT layers are very attractive materials for modification of the surface of metallic orthopedic implants.
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Affiliation(s)
- E Długoń
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - W Niemiec
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland.
| | - A Frączek-Szczypta
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - P Jeleń
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - M Sitarz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - M Błażewicz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
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Jiang G, He G. A new approach to the fabrication of porous magnesium with well-controlled 3D pore structure for orthopedic applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 43:317-20. [DOI: 10.1016/j.msec.2014.07.033] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 05/10/2014] [Accepted: 07/08/2014] [Indexed: 10/25/2022]
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25
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Rao X, Chu C, Zheng Y. Phase composition, microstructure, and mechanical properties of porous Ti–Nb–Zr alloys prepared by a two-step foaming powder metallurgy method. J Mech Behav Biomed Mater 2014; 34:27-36. [DOI: 10.1016/j.jmbbm.2014.02.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/29/2014] [Accepted: 02/02/2014] [Indexed: 11/25/2022]
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26
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Enhancement of the porous titanium with entangled wire structure for load-bearing biomedical applications. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.matdes.2013.11.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Liao J, Ning C, Tan G, Ni G, Pan H. Conducting Polypyrrole Nanotube Arrays as an Implant Surface: Fabricated on Biomedical Titanium with Fine-Tunability by Means of Template-Free Electrochemical Polymerization. Chempluschem 2014; 79:524-530. [PMID: 31986699 DOI: 10.1002/cplu.201300385] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Indexed: 02/05/2023]
Abstract
With the aim of inducing angiogenesis and neurogenesis between implants and bone tissue through electrical signals, conducting polypyrrole (PPy) nanotube arrays (CPNAs) as an implant surface were designed. Large-area CPNAs were fabricated on biomedical titanium by means of template-free electrochemical polymerization based on prenucleation film. The nanoarchitectures were able to be finely tuned between cylindrical and conical nanotubes by tailoring the electrochemical parameters, which were accompanied by a shift in the crystallinity. Accordingly, we propose insight into the fine-tunable fabrication of CPNAs. The prenucleation film possessed a great capability for forming sufficient active nucleation sites that created an isotropic two-dimensional environment, which is a desired medium for facilitating the fabrication of large-area CPNAs on biomedical titanium. Moreover, the fine-tunability of the nanoarchitectures results from the dependency of pyrrole solubility in phosphate buffer solution on the electrochemical conditions.
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Affiliation(s)
- Jingwen Liao
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641 (P. R. China), Fax: (+86) 020-22236088
| | - Chengyun Ning
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641 (P. R. China), Fax: (+86) 020-22236088
| | - Guoxin Tan
- Institute of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006 (P. R. China)
| | - Guoxin Ni
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515 (P. R. China)
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen 518055 (P. R. China), Fax: (+86) 0755-86585230
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Liu P, Wang N, Hao Y, Zhao Q, Qiao Y, Li H, Li J. Entangled titanium fibre balls combined with nano strontium hydroxyapatite in repairing bone defects. Med Princ Pract 2014; 23:264-70. [PMID: 24686383 PMCID: PMC5586876 DOI: 10.1159/000359951] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 01/23/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To investigate the effect of entangled titanium fibre balls (ETFBs) combined with nano strontium hydroxyapatite (nano-Sr-HAP) on the repair of bone defects in vivo. MATERIALS AND METHODS Twenty-four 6-month-old, specific pathogen-free, male Sprague-Dawley rats were used. Drill defects were created in bilateral femoral condyles. ETFBs combined with nano-Sr-HAP were selected randomly from 72 samples and implanted into the femoral bone defects of left legs, which served as the experimental group, while ETFBs without nano-Sr-HAP were implanted into right legs for comparison. The bone defects on both sides were X-rayed. The anteroposterior positions and histological procedures and evaluations of each sample were performed at 1, 2, 4 and 8 weeks post-surgery. RESULTS Histological results showed that the ETBs allowed new bone to grow within their structure. Additionally, an increase in new bone was seen on the nano-Sr-HAP side compared to the control side. The results of histomorphometric analysis confirmed that the new bone formation on the left side gradually increased with time. There was a statistical increase in new bone at 2, 4 and 8 weeks, and the differences between the two sides were statistically significant at weeks 4 and 8 (p < 0.05 for all comparisons). CONCLUSION The results showed that ETFBs possess a unique 3-dimensional interconnective porous structure and have excellent biocompatibility, cell affinity and osteoconductivity, which makes them useful as scaffold materials for repairing bone defects. On the other hand, nano-Sr-HAP improved the bone defect-repairing capacity of the ETFBs, which showed osteoinductive properties.
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Affiliation(s)
- Ping Liu
- Department of Research and Development, Shanghai Shanshan Tech. Co., Ltd, Hangzhou, China
- School of Chemistry, Zhejinag University, Hangzhou, China
| | - Nan Wang
- Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Hangzhou, China
| | - Yongqiang Hao
- Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Hangzhou, China
| | - Qinghua Zhao
- Department of Orthopaedic Surgery, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yongmin Qiao
- Department of Research and Development, Shanghai Shanshan Tech. Co., Ltd, Hangzhou, China
| | - Hui Li
- Department of Research and Development, Shanghai Shanshan Tech. Co., Ltd, Hangzhou, China
| | - Jipeng Li
- Department of Orthopaedic Surgery, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Li Y, Yang C, Zhao H, Qu S, Li X, Li Y. New Developments of Ti-Based Alloys for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2014; 7:1709-1800. [PMID: 28788539 PMCID: PMC5453259 DOI: 10.3390/ma7031709] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 12/24/2013] [Accepted: 01/24/2014] [Indexed: 02/05/2023]
Abstract
Ti-based alloys are finding ever-increasing applications in biomaterials due to their excellent mechanical, physical and biological performance. Nowdays, low modulus β-type Ti-based alloys are still being developed. Meanwhile, porous Ti-based alloys are being developed as an alternative orthopedic implant material, as they can provide good biological fixation through bone tissue ingrowth into the porous network. This paper focuses on recent developments of biomedical Ti-based alloys. It can be divided into four main sections. The first section focuses on the fundamental requirements titanium biomaterial should fulfill and its market and application prospects. This section is followed by discussing basic phases, alloying elements and mechanical properties of low modulus β-type Ti-based alloys. Thermal treatment, grain size, texture and properties in Ti-based alloys and their limitations are dicussed in the third section. Finally, the fourth section reviews the influence of microstructural configurations on mechanical properties of porous Ti-based alloys and all known methods for fabricating porous Ti-based alloys. This section also reviews prospects and challenges of porous Ti-based alloys, emphasizing their current status, future opportunities and obstacles for expanded applications. Overall, efforts have been made to reveal the latest scenario of bulk and porous Ti-based materials for biomedical applications.
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Affiliation(s)
- Yuhua Li
- National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China.
| | - Chao Yang
- National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China.
| | - Haidong Zhao
- National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China.
| | - Shengguan Qu
- National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China.
| | - Xiaoqiang Li
- National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China.
| | - Yuanyuan Li
- National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China.
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Flexural and compressive mechanical behaviors of the porous titanium materials with entangled wire structure at different sintering conditions for load-bearing biomedical applications. J Mech Behav Biomed Mater 2013; 28:309-19. [DOI: 10.1016/j.jmbbm.2013.08.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 08/13/2013] [Accepted: 08/15/2013] [Indexed: 11/24/2022]
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32
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Naito Y, Bae J, Tomotake Y, Hamada K, Asaoka K, Ichikawa T. Formability and mechanical properties of porous titanium produced by a moldless process. J Biomed Mater Res B Appl Biomater 2013; 101:1090-4. [DOI: 10.1002/jbm.b.32919] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 01/17/2013] [Accepted: 01/30/2013] [Indexed: 11/09/2022]
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