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Tang T, Wandless R, Keskin-Erdogan Z, Mandakhbayar NE, Park JH, Kim HW, Abramchuk M, Daltoe FP, Knowles JC. Titanium-doped phosphate glasses containing zinc and strontium applied in bone regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2024; 35:33. [PMID: 38900208 PMCID: PMC11189983 DOI: 10.1007/s10856-024-06804-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024]
Abstract
Phosphate bioactive glass has been studied for its advanced biodegradability and active ion release capability. Our previous research found that phosphate glass containing (P2O5)-(Na2O)-(TiO2)-(CaO)-(SrO) or (ZnO) showed good biocompatibility with MG63 and hMSCs. This study further investigated the application of 5 mol% zinc oxide or 17.5 mol% strontium oxide in titanium-doped phosphate glass for bone tissue engineering. Ti-Ca-Na-Phosphate glasses, incorporating 5% zinc oxide or 17.5% strontium oxide, were made with melting quenching technology. The pre-osteoblast cell line MC3T3-E1 was cultured for indirect contact tests with graded diluted phosphate glass extractions and for direct contact tests by seeding cells on glass disks. The cell viability and cytotoxicity were analysed in vitro over 7 days. In vivo studies utilized the tibial defect model with or without glass implants. The micro-CT analysis was performed after surgery and then at 2, 6, and 12 weeks. Extractions from both zinc and strontium phosphate glasses showed no negative impact on MC3T3-E1 cell viability. Notably, non-diluted Zn-Ti-Ca-Na-phosphate glass extracts significantly increased cell viability by 116.8% (P < 0.01). Furthermore, MC3T3-E1 cells cultured with phosphate glass disks exhibited no increase in LDH release compared with the control group. Micro-CT images revealed that, over 12 weeks, both zinc-doped and strontium-doped phosphate glasses demonstrated good bone incorporation and longevity compared to the no-implant control. Titanium-doped phosphate glasses containing 5 mol% zinc oxide, or 17.5 mol% strontium oxide have promising application potential for bone regeneration research.
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Affiliation(s)
- Tianyi Tang
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, London, NW3 2PF, UK
| | - Rachel Wandless
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, London, NW3 2PF, UK
| | - Zalike Keskin-Erdogan
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, London, NW3 2PF, UK
- Department of Chemical Engineering, Imperial College London, Exhibition Road, South Kensington, London, SW72AZ, UK
| | - Nandin-Erdene Mandakhbayar
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, South Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, South Korea
- Department of Nanobiomedical Science & BK21 NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, 31116, South Korea
- Department of Biochemistry, School of Biomedicine, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Jeong-Hui Park
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, South Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, South Korea
- Department of Nanobiomedical Science & BK21 NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, 31116, South Korea
- Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, 31116, South Korea
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, South Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, South Korea
- Department of Nanobiomedical Science & BK21 NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan, 31116, South Korea
- Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, 31116, South Korea
| | - Morgana Abramchuk
- Graduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, SC, 88040-370, Brazil
| | - Felipe P Daltoe
- Department of Pathology, Federal University os Santa Catarina, Florianopolis, SC, 88040-370, Brazil
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, London, NW3 2PF, UK.
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, South Korea.
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Biological Evaluation of Zinc Phosphate Cement for Potential Bone Contact Applications. Biomedicines 2023; 11:biomedicines11020250. [PMID: 36830786 PMCID: PMC9953316 DOI: 10.3390/biomedicines11020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
Zinc phosphate cement is used in dentistry to lute crowns and bridges. So far, its biocompatibility for other applications has not been studied. This paper reports the biocompatibility of zinc phosphate towards MG63 cells, testing both the material (discs; 3 mm diameter × 1 mm thick) and leachate from the cement. Cell viability was determined using an MTT assay, and cytotoxicity from the effects of leachate, studied in triplicate. Microscopy (optical and scanning electron) determined the morphology and proliferation of cells attached to zinc phosphate. ICP-OES measured element release into leachate, and anti-microbial behaviour was determined against Streptococcus pyrogenes cultured on a Brain Heart Infusion agar using cement discs (3 mm diameter × 1 mm thick). Zones of inhibition were measured after 72 h. MG63 cells proliferated on zinc phosphate surfaces and retained their morphology. The cells were healthy and viable as shown by an MTT assay, both on cement and in leachate. High levels of phosphorus but low levels of zinc were released into leachate. The cement showed minimal antimicrobial activity against S. pyogenes, probably due to the long maturation times used. Zinc phosphate cement was found to be biocompatible towards MG63 cells, which indicates that it may be capable of use in bone contact applications.
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Stuart B, Stan G, Popa A, Carrington M, Zgura I, Necsulescu M, Grant D. New solutions for combatting implant bacterial infection based on silver nano-dispersed and gallium incorporated phosphate bioactive glass sputtered films: A preliminary study. Bioact Mater 2022; 8:325-340. [PMID: 34541404 PMCID: PMC8427212 DOI: 10.1016/j.bioactmat.2021.05.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/29/2021] [Accepted: 05/29/2021] [Indexed: 12/26/2022] Open
Abstract
Ag/Ga were incorporated into resorbable orthopaedic phosphate bioactive glasses (PBG, containing P, Ca, Mg, Na, and Fe) thin films to demonstrate their potential to limit growth of Staphylococcus aureus and Escherichia coli in post-operative prosthetic implantation. Dual target consecutive co-sputtering was uniquely employed to produce a 46 nm Ag:PBG composite observed by high resolution TEM to consist of uniformly dispersed ~5 nm metallic Ag nano-particles in a glass matrix. Ga3+ was integrated into a phosphate glass preform target which was magnetron sputtered to film thicknesses of ~400 or 1400 nm. All coatings exhibited high surface energy of 75.4-77.3 mN/m, attributed to the presence of hydrolytic P-O-P structural surface bonds. Degradation profiles obtained in deionized water, nutrient broth and cell culture medium showed varying ion release profiles, whereby Ga release was measured in 1400 nm coating by ICP-MS to be ~6, 27, and 4 ppm respectively, fully dissolving by 24 h. Solubility of Ag nanoparticles was only observed in nutrient broth (~9 ppm by 24 h). Quantification of colony forming units after 24 h showed encouraging antibacterial efficacy towards both S. aureus (4-log reduction for Ag:PBG and 6-log reduction for Ga-PBG≈1400 nm) and E. coli (5-log reduction for all physical vapour deposited layers) strains. Human Hs27 fibroblast and mesenchymal stem cell line in vitro tests indicated good cytocompatibility for all sputtered layers, with a marginal cell proliferation inertia in the case of the Ag:PBG composite thin film. The study therefore highlights the (i) significant manufacturing development via the controlled inclusion of metallic nanoparticles into a PBG glass matrix by dual consecutive target co-sputtering and (ii) potential of PBG resorbable thin-film structures to incorporate and release cytocompatible/antibacterial oxides. Both architectures showed prospective bio-functional performance for a future generation of endo-osseous implant-type coatings.
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Affiliation(s)
- B.W. Stuart
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - G.E. Stan
- National Institute of Materials Physics, Magurele, RO, 077125, Romania
| | - A.C. Popa
- National Institute of Materials Physics, Magurele, RO, 077125, Romania
- Army Centre for Medical Research, Bucharest, RO, 010195, Romania
| | - M.J. Carrington
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - I. Zgura
- National Institute of Materials Physics, Magurele, RO, 077125, Romania
| | - M. Necsulescu
- Army Centre for Medical Research, Bucharest, RO, 010195, Romania
| | - D.M. Grant
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
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Zhao R, Shi L, Gu L, Qin X, Song Z, Fan X, Zhao P, Li C, Zheng H, Li Z, Wang Q. Evaluation of bioactive glass scaffolds incorporating SrO or ZnO for bone repair: In vitro bioactivity and antibacterial activity. J Appl Biomater Funct Mater 2021; 19:22808000211040910. [PMID: 34465222 DOI: 10.1177/22808000211040910] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A series of bioactive glass scaffolds doped with SrO or ZnO (0, 5, and 10 mol%) were synthesized by the foam replica and melting method. The thermodynamic evolution, phase composition, microstructure, ion release, in vitro bioactivity, and oxygen density of the scaffolds were characterized. The proliferation of murine long bone osteocyte Y4 cells was studied by cell culture. The survival rate of the BGs evaluated the antibacterial activity and Escherichia coli strains in co-culture. The results indicated that the process window decreases with the increase of dopants. All the samples have a pore structure size of 200-400 μm. When the scaffolds were immersed in simulated body fluid for 28 days, hydroxyapatite formation was not affected, but the degradation process was retarded. The glass network packing and ionic radii variations of the substitution ions control surface degradation, glass dissolution, and ion release. MTT results revealed that 5Sr-BG had a significant effect on promoting cell proliferation and none of the BGs were cytotoxicity. Sr-BGs and Zn-BGs exhibited significantly inhibited growth against E. coli bacterial strains. Generally, these results showed the 5Sr-BG scaffold with high vitro bioactivity, cell proliferation, and antibacterial property is an important candidate material for bone tissue regeneration and repair.
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Affiliation(s)
- Rui Zhao
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Lifen Shi
- State Key Laboratory of Advanced Technology for Float Glass, Bengbu, China.,(CNBM) Bengbu Design & Research Institute for Glass Industry Co., Ltd, Bengbu, China
| | - Lin Gu
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xusheng Qin
- (CNBM) Bengbu Design & Research Institute for Glass Industry Co., Ltd, Bengbu, China
| | - Zaizhi Song
- (CNBM) Bengbu Design & Research Institute for Glass Industry Co., Ltd, Bengbu, China
| | - Xiaoyun Fan
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Ping Zhao
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Changqing Li
- Silica-Based Materials Laboratory of Anhui Province, Bengbu, China
| | - Hailun Zheng
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Zhijun Li
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Qizhi Wang
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
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Foroutan F, Kyffin BA, Abrahams I, Knowles JC, Sogne E, Falqui A, Carta D. Mesoporous Strontium-Doped Phosphate-Based Sol-Gel Glasses for Biomedical Applications. Front Chem 2020; 8:249. [PMID: 32391313 PMCID: PMC7191082 DOI: 10.3389/fchem.2020.00249] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 03/16/2020] [Indexed: 12/17/2022] Open
Abstract
Mesoporous phosphate-based glasses have great potential as biomedical materials being able to simultaneously induce tissue regeneration and controlled release of therapeutic molecules. In the present study, a series of mesoporous phosphate-based glasses in the P2O5-CaO-Na2O system, doped with 1, 3, and 5 mol% of Sr2+, were prepared using the sol-gel method combined with supramolecular templating. A sample without strontium addition was prepared for comparison. The non-ionic triblock copolymer EO20PO70EO20 (P123) was used as a templating agent. Scanning electron microscopy (SEM) images revealed that all synthesized glasses have an extended porous structure. This was confirmed by N2 adsorption-desorption analysis at 77 K that shows a porosity typical of mesoporous materials. 31P magic angle spinning nuclear magnetic resonance (31P MAS-NMR) and Fourier transform infrared (FTIR) spectroscopies have shown that the glasses are mainly formed by Q1 and Q2 phosphate groups. Degradation of the glasses in deionized water assessed over a 7-day period shows that phosphate, Ca2+, Na+, and Sr2+ ions can be released in a controlled manner over time. In particular, a direct correlation between strontium content and degradation rate was observed. This study shows that Sr-doped mesoporous phosphate-based glasses have great potential in bone tissue regeneration as materials for controlled delivery of therapeutic ions.
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Affiliation(s)
- Farzad Foroutan
- Department of Chemistry, University of Surrey, Guildford, United Kingdom
| | | | - Isaac Abrahams
- School of Biological and Chemical Sciences, Materials Research Institute, Queen Mary University of London, London, United Kingdom
| | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, University College London, Eastman Dental Institute, London, United Kingdom
- The Discoveries Centre for Regenerative and Precision Medicine, London, United Kingdom
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan-si, South Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan-si, South Korea
| | - Elisa Sogne
- NABLA Lab, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Andrea Falqui
- NABLA Lab, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Daniela Carta
- Department of Chemistry, University of Surrey, Guildford, United Kingdom
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Sergi R, Bellucci D, Salvatori R, Maisetta G, Batoni G, Cannillo V. Zinc containing bioactive glasses with ultra-high crystallization temperature, good biological performance and antibacterial effects. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109910. [DOI: 10.1016/j.msec.2019.109910] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 06/21/2019] [Accepted: 06/21/2019] [Indexed: 02/03/2023]
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Foroutan F, McGuire J, Gupta P, Nikolaou A, Kyffin BA, Kelly NL, Hanna JV, Gutierrez-Merino J, Knowles JC, Baek SY, Velliou E, Carta D. Antibacterial Copper-Doped Calcium Phosphate Glasses for Bone Tissue Regeneration. ACS Biomater Sci Eng 2019; 5:6054-6062. [DOI: 10.1021/acsbiomaterials.9b01291] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | | | | | | | | | - Nicole L. Kelly
- Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - John V. Hanna
- Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | | | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, 256 Gray’s Inn Road, London WC1X 8LD, United Kingdom
- The Discoveries Centre for Regenerative and Precision Medicine, University College London, London WC1E 6BT, United Kingdom
| | - Song-Yi Baek
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, 256 Gray’s Inn Road, London WC1X 8LD, United Kingdom
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Raja FNS, Worthington T, Isaacs MA, Rana KS, Martin RA. The antimicrobial efficacy of zinc doped phosphate-based glass for treating catheter associated urinary tract infections. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109868. [PMID: 31349427 DOI: 10.1016/j.msec.2019.109868] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 11/19/2022]
Abstract
In this study, a series of phosphate-based glasses; (P2O5)50(Na2O)20(CaO)30-x (ZnO)x were prepared with increasing concentration of zinc oxide to determine the antimicrobial effect against clinically relevant microorganisms. The addition of 1 and 3 mol% zinc oxide decreased glass degradation however a higher dissolution rate was observed for 5 and 10 mol% ZnO. The antimicrobial results showed a concentration dependent effect on the viability of microorganisms. When in direct contact zinc doped glasses showed a complete kill, within 24 h, against Escherichia coli and a significant (p < 0.01) kill was observed against Staphylococcus aureus however the effect of dissolution products was not seen until 48 h. Furthermore, the cytotoxic studies showed no toxic effects on the viability of uroepithelial cells. This study has shown that zinc doped phosphate-based glasses can potentially be used to prevent/treat catheter associated urinary tract infections.
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Affiliation(s)
- Farah N S Raja
- School of Life & Health Science and Aston Research Centre for Healthy Ageing, Aston University, Aston Triangle, Birmingham B4 7ET, UK
| | - T Worthington
- School of Life & Health Science and Aston Research Centre for Healthy Ageing, Aston University, Aston Triangle, Birmingham B4 7ET, UK
| | - Mark A Isaacs
- European Bioenergy Research Institute: EBRI, Aston University, Aston Triangle, Birmingham B4 7ET, UK
| | - Karan S Rana
- School of Life & Health Science and Aston Research Centre for Healthy Ageing, Aston University, Aston Triangle, Birmingham B4 7ET, UK
| | - Richard A Martin
- School of Engineering & Applied Science and Aston Institute of Materials Research, Aston University, Aston Triangle, Birmingham B4 7ET, UK.
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AlQaysi M, Aldaadaa A, Mordan N, Shah R, Knowles JC. Zinc and strontium based phosphate glass beads: a novel material for bone tissue engineering. ACTA ACUST UNITED AC 2017; 12:065011. [PMID: 28762960 DOI: 10.1088/1748-605x/aa8346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Degradable phosphate-based glasses that contain strontium, zinc and calcium were investigated to examine their function as an osteoconductive material. Glass beads of the general formula of (P2O5)-(Na2O)-(TiO2)-(CaO)-(SrO) or (ZnO) were prepared by a melt quench technique followed by milling and spheroidisation. After performing x-ray diffraction on all the samples for glass structure evaluation, glass bead size distribution was initially measured by a scanning electron microscope (SEM). Then, some of these samples were immersed in deionised water to evaluate both the surface changes and measure the ion release rate, whereas other samples of glass beads were incubated in culture media to determine pH changes. Furthermore, human osteoblast-like osteosarcoma cells MG63 and human mesenchymal stem cells were seeded on the glass beads to determine their cytocompatibility via applying CCK assay, ALP assay and Ca assay. SEM images and fluorescence images of confocal microscopy were performed for the cellular studies. While mass degradation and ion release results displayed a significant increase with zinc and strontium incorporation within time, pH results showed an initial increase in pH followed by a decrease. Cellular studies emphasised that all formulations enhanced cellular proliferation. Phosphate glass beads with zinc content 5 mol% and strontium content of 17.5 mol%, (ZnO5) and (SrO17.5) respectively displayed more promising results although they were insignificantly different from that of control (p > 0.05). This may suggest their applicability in hard tissue engineering.
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Affiliation(s)
- Mustafa AlQaysi
- Division of Biomaterial and Tissue Engineering, UCL Eastman Dental Institute, 256 Grays Inn Rd, London, WC1X 8LD, United Kingdom
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The Prospects of Zinc as a Structural Material for Biodegradable Implants—A Review Paper. METALS 2017. [DOI: 10.3390/met7100402] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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