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Hattab M, Ben Hassen S, Spriano S, Ferraris S, Cernea M, Ben Amor Y. Ce-doped MgO films on AZ31 alloy substrate for biomedical applications: preparation, characterization and testing. Biomed Mater 2024; 19:025013. [PMID: 38215484 DOI: 10.1088/1748-605x/ad1dfa] [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: 09/01/2023] [Accepted: 01/12/2024] [Indexed: 01/14/2024]
Abstract
Magnesium ions, MgO nanoparticles and thin films, magnesium alloys and cerium compounds are materials intensively studied due to their corrosion protection, antibacterial and pharmacological properties. In this work, we have designed, prepared and investigated, novel thin films of MgO doped with cerium, deposited on Mg alloy (AZ31) for temporary implants, in order to enhance their life time. More precisely, we report on microstructure and corrosion behavior of MgO pure and doped with 0.1 at % Ce films, fabricated by sol-gel route coupled with spin-coating technique, on AZ31 alloy substrate. A modified sol-gel method that start from magnesium acetylacetonate, cerium nitrate and 2-methoxyethanol (as a stabilizer for the sol) was been used successfully for cerium doped MgO sol precursor preparation. The structure and morphology of the surface of the coatings, before and after immersion for 7-30 d in Hank's solution at 37 °C, were characterized by x-ray diffraction (XRD), scanning electron microscopy, high-resolution transmission electron microscope, x-ray photoelectron spectroscopy and Fourier infrared transmittance spectrum (FT-IR). A comparison between the corrosion protection of undoped MgO and MgO doped with 0.1 at % Ce coatings on the AZ31 alloy substrate is performed by electrochemical tests and immersion tests using open circuit potential and electrochemical impedance spectroscopy in Hank's solution, at 37 °C. The electrochemical results showed that the protection of the AZ31 alloy substrate against corrosion was better with the doped with 0.1 at % Ce MgO film deposited than with pure MgO coting. The investigations of the films after immersion in Hank's solution, at 37 °C, for 7, 21 and 30 d indicated that the grown layer on the film is bone like apatite that suggests a good bioactivity of 0.1 at % Ce-doped MgO coating. Our work demonstrates that the performance corrosion protection of the biodegradable magnesium alloys used for orthopedic applications, in simulated physiological environments (Hank and Ringer) can be enhanced through coating with Ce3+doped MgO sol-gel thin film.
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Affiliation(s)
- Marwa Hattab
- Research Laboratory of Environmental Sciences and Technologies, Carthage University, BP.1003 Hammam-Lif, 2050 Ben Arous, Tunisia
- Faculty of Mathematical, Physical and Natural Sciences of Tunis, University of Tunis El Manar, Belvedere, Tunis 1002, Tunisia
| | - Samia Ben Hassen
- Research Laboratory of Environmental Sciences and Technologies, Carthage University, BP.1003 Hammam-Lif, 2050 Ben Arous, Tunisia
| | - Silvia Spriano
- Applied Science and Technology Department, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy
| | - Sara Ferraris
- Applied Science and Technology Department, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy
| | - Marin Cernea
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - Yasser Ben Amor
- Higher Institute of Environmental Sciences and Technology, Carthage University, BP.1003 Hammam-Lif, 2050 Ben Arous, Tunisia
- Laboratory of Wastewaters and Environment, Centre of Water Researches and Technologies (CERTE) Technopark of Borj Cedria PB 273, Soliman 8020, Tunisia
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Wu Y, Wang Y, Tian S, Li H, Zhao Y, Jia D, Zhou Y. Formation mechanism, degradation behavior, and cytocompatibility of a double-layered structural MAO/rGO-CaP coating on AZ31 Mg. Colloids Surf B Biointerfaces 2020; 190:110901. [PMID: 32179414 DOI: 10.1016/j.colsurfb.2020.110901] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 02/21/2020] [Accepted: 02/24/2020] [Indexed: 10/24/2022]
Abstract
Microarc oxidation coated magnesium attracts increasing attention recently, owing to its excellent anti-corrosion and wear-resistance properties. However, some drawbacks like micropores on the MAO surface reduce the corrosion resistance of the coatings, which requires post treatment. In the present work, a specific double layered structural MAO/rGO-CaP coating was produced to seal the micropores on the MAO coating and further enhance the corrosion resistance. The structure, cytocompatibility, electrochemical properties, and long-term corrosion behavior of the composite coatings were investigated. XRD results show that the coatings are mainly composed of CaHPO4 (DCP) and Ca5(PO4)3OH (HA). Cytocompatibility evaluation indicates that the rGO in the coating shows no cytotoxicity. Corrosion potential of the bottom MAO coating is enhanced significantly by the rGO-CaP top coatings from -1.58 V to -1.02 V. Long term soaking test reveals that a longer chemical stable coating was produced. The results suggest a potential application of the MAO/rGO-CaP coating in practice.
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Affiliation(s)
- Yunfeng Wu
- Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin, 150001, China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Yaming Wang
- Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin, 150001, China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China.
| | - Sanwei Tian
- Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin, 150001, China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Hongyu Li
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, China
| | - Ying Zhao
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, China
| | - Dechang Jia
- Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin, 150001, China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
| | - Yu Zhou
- Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin, 150001, China; Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin, 150001, China
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Razavi M, Fathi M, Savabi O, Tayebi L, Vashaee D. Biodegradable Magnesium Bone Implants Coated with a Novel Bioceramic Nanocomposite. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1315. [PMID: 32183231 PMCID: PMC7143302 DOI: 10.3390/ma13061315] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 11/17/2022]
Abstract
Magnesium (Mg) alloys are being investigated as a biodegradable metallic biomaterial because of their mechanical property profile, which is similar to the human bone. However, implants based on Mg alloys are corroded quickly in the body before the bone fracture is fully healed. Therefore, we aimed to reduce the corrosion rate of Mg using a double protective layer. We used a magnesium-aluminum-zinc alloy (AZ91) and treated its surface with micro-arc oxidation (MAO) technique to first form an intermediate layer. Next, a bioceramic nanocomposite composed of diopside, bredigite, and fluoridated hydroxyapatite (FHA) was coated on the surface of MAO treated AZ91 using the electrophoretic deposition (EPD) technique. Our in vivo results showed a significant enhancement in the bioactivity of the nanocomposite coated AZ91 implant compared to the uncoated control implant. Implantation of the uncoated AZ91 caused a significant release of hydrogen bubbles around the implant, which was reduced when the nanocomposite coated implants were used. Using histology, this reduction in the corrosion rate of the coated implants resulted in an improved new bone formation and reduced inflammation in the interface of the implants and the surrounding tissue. Hence, our strategy using a MAO/EPD of a bioceramic nanocomposite coating (i.e., diopside-bredigite-FHA) can significantly reduce the corrosion rate and improve the bioactivity of the biodegradable AZ91 Mg implant.
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Affiliation(s)
- Mehdi Razavi
- Biionix (Bionic Materials, Implants & Interfaces) Cluster, Department of Internal Medicine, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
- Department of Materials Science & Engineering, University of Central Florida, Orlando, FL 32816, USA
- Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;
- Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Mohammadhossein Fathi
- Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;
- Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Omid Savabi
- Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran;
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI 53233, USA;
| | - Daryoosh Vashaee
- Electrical and Computer Engineering Department, North Carolina State University, Raleigh, NC 27606, USA
- Materials Science and Engineering Department, North Carolina State University, Raleigh, NC 27606, USA
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Antoniac I, Miculescu F, Cotrut C, Ficai A, Rau JV, Grosu E, Antoniac A, Tecu C, Cristescu I. Controlling the Degradation Rate of Biodegradable Mg-Zn-Mn Alloys for Orthopedic Applications by Electrophoretic Deposition of Hydroxyapatite Coating. MATERIALS 2020; 13:ma13020263. [PMID: 31936095 PMCID: PMC7013831 DOI: 10.3390/ma13020263] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 12/25/2022]
Abstract
Magnesium alloys as bioresorbable materials with good biocompatibility have raised a growing interest in the past years in temporary implant manufacturing, as they offer a steady resorption rate and optimal healing in the body. Magnesium exhibits tensile strength properties similar to those of natural bone, which determines its application in load-bearing mechanical medical devices. In this paper, we investigated the biodegradation rate of Mg-Zn-Mn biodegradable alloys (ZMX410 and ZM21) before and after coating them with hydroxyapatite (HAP) via the electrophoretic deposition method. The experimental samples were subjected to corrosion tests to observe the effect of HAP deposition on corrosion resistance and, implicitly, the rate of biodegradation of these in simulated environments. X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) provided detailed information on the quality, structure, and morphology of the HAP coating. The obtained results demonstrate that coating of Mg-Zn-Mn alloys by HAP led to the improvement of corrosion resistance in simulated environments, and that the HAP coating could be used in order to control the biodegradation rate.
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Affiliation(s)
- Iulian Antoniac
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (I.A.); (F.M.); (C.C.); (E.G.); (C.T.)
| | - Florin Miculescu
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (I.A.); (F.M.); (C.C.); (E.G.); (C.T.)
| | - Cosmin Cotrut
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (I.A.); (F.M.); (C.C.); (E.G.); (C.T.)
| | - Anton Ficai
- Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 7 Gheorghe Polizu, District 1, 011061 Bucharest, Romania;
| | - Julietta V. Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133 Rome, Italy;
| | - Elena Grosu
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (I.A.); (F.M.); (C.C.); (E.G.); (C.T.)
| | - Aurora Antoniac
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (I.A.); (F.M.); (C.C.); (E.G.); (C.T.)
- Correspondence: ; Tel.: +40-744-629-838
| | - Camelia Tecu
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (I.A.); (F.M.); (C.C.); (E.G.); (C.T.)
| | - Ioan Cristescu
- Clinical Emergency Hospital Bucharest, Dept.Orthoped. & Traumatol, 8 Floreasca Ave, District 1, 014461 Bucharest, Romania;
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Magnesium matrix nanocomposites for orthopedic applications: A review from mechanical, corrosion, and biological perspectives. Acta Biomater 2019; 96:1-19. [PMID: 31181263 DOI: 10.1016/j.actbio.2019.06.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/28/2019] [Accepted: 06/05/2019] [Indexed: 02/06/2023]
Abstract
Magnesium (Mg) and some of its alloys have attracted extensive interests for biomedical applications as they exhibit biodegradability and low elastic modulus that is closer to natural bones than the currently used metallic implant materials such as titanium (Ti) and its alloys, stainless steels, and cobalt-chromium (Co-Cr) alloys. However, the rapid degradation of Mg alloys and loss of their mechanical integrity before sufficient bone healing impede their clinical application. Our literature review shows that magnesium matrix nanocomposites (MMNCs) reinforced with nanoparticles possess enhanced strength, high corrosion resistance, and good biocompatibility. This article provides a detailed analysis of the effects of nanoparticle reinforcements on the mechanical properties, corrosion behavior, and biocompatibility of MMNCs as promising biodegradable implant materials. The governing equations to quantitatively predict the mechanical properties and underlying synergistic strengthening mechanisms in MMNCs are elucidated. The potential, recent advances, challenges and future research directions in relation to nanoparticles reinforced MMNCs are highlighted. STATEMENT OF SIGNIFICANCE: Critically reviewing magnesium metal matrix nanocomposites (MMNCs) for the biomedical application. Clear definitions of strengthening mechanisms using reinforcement particle in the magnesium matrix, as there were controversial in governing equations of strengthening parameters. Providing better understanding of the effect of particle size, volume fraction, interfacial bonding, and uniform dispersion of reinforcement particles on MMNCs.
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In vivo study of microarc oxidation coated Mg alloy as a substitute for bone defect repairing: Degradation behavior, mechanical properties, and bone response. Colloids Surf B Biointerfaces 2019; 181:349-359. [PMID: 31158697 DOI: 10.1016/j.colsurfb.2019.05.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/21/2019] [Accepted: 05/22/2019] [Indexed: 11/20/2022]
Abstract
Large segmental bone defect healing remains a great challenge in clinic. Limited by the source of autograft, bone graft substitute tends to be the research focus. In the present study, we propose a strategy by using microarc oxidation (MAO) coated magnesium scaffold as a large segmental bone graft substitute, utilizing its combination of strength, degradability, and controllable corrosion rate. Bare substrate, 10 μm and 20 μm thick MAO coated Mg scaffolds were implanted into ulna bone of New Zealand white rabbits, employing a 15 mm wide bone defect model. The biocompatibility and in vivo degradation of the implants, the bone defect healing response, and mechanical properties of the injured bone were investigated. The surface cytocompatibility evaluation results show that the MAO coated Mg are more suitable for cell proliferation. Micro-CT results show that abundant new bone formed and initially bridged the 15 mm gap at 8 weeks. Histological results indicate the newly formed bone was full of maturation at 12 weeks. Three point bending tests reveal that the injured bone possessed sufficient mechanical strength after 12 weeks. A 3-step in vivo degradation mechanism was proposed for the implants. In summary, we observed an actual trial of 15 mm wide bone defect healing where the newly formed bone bridged the bone gap at 8 weeks successfully. These data suggest a great potential of MAO coated magnesium to be a bone graft substitute.
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Razavi M, Huang Y. Assessment of magnesium-based biomaterials: from bench to clinic. Biomater Sci 2019; 7:2241-2263. [DOI: 10.1039/c9bm00289h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
This review presents the operation procedures of commonly used standard methods for assessment of Mg-based biomaterials from bench to clinic.
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Affiliation(s)
- Mehdi Razavi
- Brunel Center for Advanced Solidification Technology (BCAST)
- Institute of Materials and Manufacturing
- Brunel University London
- London UB8 3PH
- UK
| | - Yan Huang
- Brunel Center for Advanced Solidification Technology (BCAST)
- Institute of Materials and Manufacturing
- Brunel University London
- London UB8 3PH
- UK
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In vivo study of microarc oxidation coated biodegradable magnesium plate to heal bone fracture defect of 3mm width. Colloids Surf B Biointerfaces 2017; 158:147-156. [PMID: 28688364 DOI: 10.1016/j.colsurfb.2017.06.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/12/2017] [Accepted: 06/21/2017] [Indexed: 11/22/2022]
Abstract
Microarc oxidation (MAO) coated magnesium (Mg) with improved corrosion resistance appeal increasing interests as a revolutionary biodegradable metal for fractured bone fixing implants application. However, the in vivo corrosion degradation of the implants and bone healing response are not well understood, which is highly required in clinic. In the present work, 10μm and 20μm thick biocompatible MAO coatings mainly composed of MgO, Mg2SiO4, CaSiO3 and Mg3(PO4)2 phases were fabricated on AZ31 magnesium alloy. The electrochemical tests indicated an improved corrosion resistance of magnesium by the MAO coatings. The 10μm and 20μm coated and uncoated magnesium plates were separately implanted into the radius bone fracture site of adult New Zealand white rabbits using a 3mm width bone fracture defect model to investigate the magnesium implants degradation and uninhibited bone healing. Taking advantage of the good biocompatibility of the MAO coatings, no adverse effects were detected through the blood test and histological examination. The implantation groups of coated and uncoated magnesium plates were both observed the promoting effect of bone fracture healing compared with the simple fracture group without implant. The releasing Mg2+ by the degradation of implants into the fracture site improved the bone fracture healing, which is attributed to the magnesium promoting CGRP-mediated osteogenic differentiation. Mg degradation and bone fracture healing promoting must be tailored by microarc oxidation coating with different thickness for potential clinic application.
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Mohammadi H, Sepantafar M. Ion-Doped Silicate Bioceramic Coating of Ti-Based Implant. IRANIAN BIOMEDICAL JOURNAL 2016; 20:189-200. [PMID: 26979401 PMCID: PMC4983673 DOI: 10.7508/ibj.2016.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/08/2015] [Accepted: 09/02/2015] [Indexed: 01/05/2023]
Abstract
Titanium and its alloy are known as important load-bearing biomaterials. The major drawbacks of these metals are fibrous formation and low corrosion rate after implantation. The surface modification of biomedical implants through various methods such as plasma spray improves their osseointegration and clinical lifetime. Different materials have been already used as coatings on biomedical implant, including calcium phosphates and bioglass. However, these materials have been reported to have limited clinical success. The excellent bioactivity of calcium silicate (Ca-Si) has been also regarded as coating material. However, their high degradation rate and low mechanical strength limit their further coating application. Trace element modification of (Ca-Si) bioceramics is a promising method, which improves their mechanical strength and chemical stability. In this review, the potential of trace element-modified silicate coatings on better bone formation of titanium implant is investigated.
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Affiliation(s)
- Hossein Mohammadi
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia
| | - Mohammadmajid Sepantafar
- Department of Stem Cell and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Department of Metallurgy and Materials Engineering, Faculty of Engineering, University of Semnan, Semnan, Iran
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Razavi M, Fathi M, Savabi O, Vashaee D, Tayebi L. In vivo study of nanostructured akermanite/PEO coating on biodegradable magnesium alloy for biomedical applications. J Biomed Mater Res A 2014; 103:1798-808. [PMID: 25203515 DOI: 10.1002/jbm.a.35324] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 08/08/2014] [Accepted: 08/13/2014] [Indexed: 01/13/2023]
Abstract
The major issue for biodegradable magnesium alloys is the fast degradation and release of hydrogen gas. In this article, we aim to overcome these disadvantages by using a surface modified magnesium implant. We have recently coated AZ91 magnesium implants by akermanite (Ca2 MgSi2 O7 ) through the combined electrophoretic deposition (EPD) and plasma electrolytic oxidation (PEO) methods. In this work, we performed the in vitro and in vivo examinations of these coated implants using L-929 cell line and rabbit animal model. The in vitro study confirmed the higher cytocompatibility of the coated implants compare to the uncoated ones. For the in vivo experiment, the rod samples were implanted into the greater trochanter of rabbits and monitored for two months. The results indicated a noticeable biocompatibility improvement of the coated implants which includes slower implant weight loss, reduction in Mg ion released from the coated samples in the blood plasma, lower release of hydrogen bubbles, increase in the amount of bone formation and ultimately lower bone inflammation after the surgery according to the histological images. Our data exemplifies that the proper surface treatment of the magnesium implants can improve their biocompatibility under physiological conditions to make them applicable in clinical uses. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 103A: 1798-1808, 2015.
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Affiliation(s)
- Mehdi Razavi
- Department of Materials Engineering, Biomaterials Research Group, Isfahan University of Technology, Isfahan, 84156-83111, Iran; Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, 81746-73461, Iran; School of Materials Science and Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, Oklahoma, 74106; School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, Oklahoma, 74106
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Improvement of Biodegradability, Bioactivity, Mechanical Integrity and Cytocompatibility Behavior of Biodegradable Mg Based Orthopedic Implants Using Nanostructured Bredigite (Ca7MgSi4O16) Bioceramic Coated via ASD/EPD Technique. Ann Biomed Eng 2014; 42:2537-50. [DOI: 10.1007/s10439-014-1084-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 07/31/2014] [Indexed: 11/25/2022]
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Razavi M, Fathi M, Savabi O, Vashaee D, Tayebi L. In vitro study of nanostructured diopside coating on Mg alloy orthopedic implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 41:168-77. [DOI: 10.1016/j.msec.2014.04.039] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 03/24/2014] [Accepted: 04/18/2014] [Indexed: 10/25/2022]
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Dorozhkin SV. Calcium orthophosphate coatings on magnesium and its biodegradable alloys. Acta Biomater 2014; 10:2919-34. [PMID: 24607420 DOI: 10.1016/j.actbio.2014.02.026] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 02/07/2014] [Accepted: 02/12/2014] [Indexed: 12/01/2022]
Abstract
Biodegradable metals have been suggested as revolutionary biomaterials for bone-grafting therapies. Of these metals, magnesium (Mg) and its biodegradable alloys appear to be particularly attractive candidates due to their non-toxicity and as their mechanical properties match those of bones better than other metals do. Being light, biocompatible and biodegradable, Mg-based metallic implants have several advantages over other implantable metals currently in use, such as eliminating both the effects of stress shielding and the requirement of a second surgery for implant removal. Unfortunately, the fast degradation rates of Mg and its biodegradable alloys in the aggressive physiological environment impose limitations on their clinical applications. This necessitates development of implants with controlled degradation rates to match the kinetics of bone healing. Application of protective but biocompatible and biodegradable coatings able to delay the onset of Mg corrosion appears to be a reasonable solution. Since calcium orthophosphates are well tolerated by living organisms, they appear to be the excellent candidates for such coatings. Nevertheless, both the high chemical reactivity and the low melting point of Mg require specific parameters for successful deposition of calcium orthophosphate coatings. This review provides an overview of current coating techniques used for deposition of calcium orthophosphates on Mg and its biodegradable alloys. The literature analysis revealed that in all cases the calcium orthophosphate protective coatings both increased the corrosion resistance of Mg-based metallic biomaterials and improved their surface biocompatibility.
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Razavi M, Fathi M, Savabi O, Vashaee D, Tayebi L. Micro-arc oxidation and electrophoretic deposition of nano-grain merwinite (Ca3
MgSi2
O8
) surface coating on magnesium alloy as biodegradable metallic implant. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5465] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mehdi Razavi
- Biomaterials Research Group, Department of Materials Engineering; Isfahan University of Technology; Isfahan 84156-83111 Iran
- Torabinejad Dental Research Center, School of Dentistry; Isfahan University of Medical Sciences; Isfahan 81746-73461 Iran
- School of Materials Science and Engineering, Helmerich Advanced Technology Research Center; Oklahoma State University; Tulsa OK 74106 USA
- School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center; Oklahoma State University; Tulsa OK 74106 USA
| | - Mohammadhossein Fathi
- Biomaterials Research Group, Department of Materials Engineering; Isfahan University of Technology; Isfahan 84156-83111 Iran
- Dental Materials Research Center; Isfahan University of Medical Sciences; Isfahan Iran
| | - Omid Savabi
- Torabinejad Dental Research Center, School of Dentistry; Isfahan University of Medical Sciences; Isfahan 81746-73461 Iran
| | - Daryoosh Vashaee
- School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center; Oklahoma State University; Tulsa OK 74106 USA
| | - Lobat Tayebi
- School of Materials Science and Engineering, Helmerich Advanced Technology Research Center; Oklahoma State University; Tulsa OK 74106 USA
- School of Chemical Engineering; Oklahoma State University; Stillwater OK 74078 USA
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