1
|
Pan J, Zhang J, Li Y, Yang F, Yu Y, Wang S. Degradation Behavior of Medical MgZZC-1 in Various Simulated Body Fluids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14674-14684. [PMID: 38958429 DOI: 10.1021/acs.langmuir.4c01715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Magnesium-based biodegradable metal bone implants exhibit superior mechanical properties compared to biodegradable polymers for orthopedic and cardiovascular stents. In this study, MgZZC-x (x = 1, 1.2) alloys were screened by in vitro biocompatibility tests in three simulated body fluids under nontoxic conditions. The MgZZC-1 alloys with better biocompatibility were selected to predict the days required for complete degradation. The evolution of degradation products was analyzed, and the mechanism of formation of the product film was inferred. A degradation kinetic model was established to investigate the effect of MEM components on the degradation of the alloys. The results demonstrate that the proteins in MEM can greatly retard the degradation progress by attaching to the surface of MgZZC-1 alloys, which are predicted to degrade completely within 341 days. The carbonate and phosphate buffers were adjusted to pH in MEM solution, delaying the degradation of magnesium alloys. This process in MEM more accurately reflects the actual degradation in the body and is superior to that in Hanks and SBF solutions. This study will promote the application of biodegradable materials in clinical medicine.
Collapse
Affiliation(s)
- Jie Pan
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Jinling Zhang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yelei Li
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Fanxi Yang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yanchong Yu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Shebin Wang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| |
Collapse
|
2
|
Lan W, Li J, Lv Z, Liu S, Liang Z, Huang D, Wei X, Chen W. In vitro corrosion and cytocompatibility of Mg-Zn-Ca alloys coated with FHA. Colloids Surf B Biointerfaces 2024; 238:113880. [PMID: 38581836 DOI: 10.1016/j.colsurfb.2024.113880] [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: 01/28/2024] [Revised: 03/21/2024] [Accepted: 03/26/2024] [Indexed: 04/08/2024]
Abstract
In the field of orthopedics, it's crucial to effectively slow down the degradation rate of Mg alloys. This study aims to improve the degradation behavior of Mg-Zn-Ca alloys by electrodepositing fluorohydroxyapatite (FHA). We investigated the microstructure and bond strength of the deposition, as well as degradation and cellular reactions. After 15-30 days of degradation in Hanks solution, FHA deposited alloys showed enhanced stability and less pH change. The strong interfacial bond between FHA and the Mg-Zn-Ca substrate was verified through scratch tests (Critical loads: 10.73 ± 0.014 N in Mg-Zn-0.5Ca alloys). Cellular studies demonstrated that FHA-coated alloys exhibited good cytocompatibility and promoted the growth of MC3T3-E1 cells. Further tests showed FHA-coated alloys owed improved early bone mineralization and osteogenic properties, especially in Mg-Zn-0.5Ca. This research highlighted the potential of FHA-coated Mg-Zn-0.5Ca alloys in orthopedics applications.
Collapse
Affiliation(s)
- Weiwei Lan
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China
| | - Jun Li
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Zhenjun Lv
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Shuang Liu
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Ziwei Liang
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China
| | - Di Huang
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China.
| | - Xiaochun Wei
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan 030001, PR China
| | - Weiyi Chen
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China.
| |
Collapse
|
3
|
Marek R, Eichler J, Schwarze UY, Fischerauer S, Suljevic O, Berger L, Löffler JF, Uggowitzer PJ, Weinberg AM. Long-term in vivo degradation of Mg-Zn-Ca elastic stable intramedullary nails and their influence on the physis of juvenile sheep. BIOMATERIALS ADVANCES 2023; 150:213417. [PMID: 37087913 DOI: 10.1016/j.bioadv.2023.213417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/28/2023] [Accepted: 03/31/2023] [Indexed: 04/25/2023]
Abstract
The use of bioresorbable magnesium (Mg)-based elastic stable intramedullary nails (ESIN) is highly promising for the treatment of pediatric long-bone fractures. Being fully resorbable, a removal surgery is not required, preventing repeated physical and psychological stress for the child. Further, the osteoconductive properties of the material support fracture healing. Nowadays, ESIN are exclusively implanted in a non-transphyseal manner to prevent growth discrepancies, although transphyseal implantation would often be required to guarantee optimized fracture stabilization. Here, we investigated the influence of trans-epiphyseally implanted Mg-Zinc (Zn)-Calcium (Ca) ESIN on the proximal tibial physis of juvenile sheep over a period of three years, until skeletal maturity was reached. We used the two alloying systems ZX10 (Mg-1Zn-0.3Ca, in wt%) and ZX00 (Mg-0.3Zn-0.4Ca, in wt%) for this study. To elaborate potential growth disturbances such as leg-length differences and axis deviations we used a combination of in vivo clinical computed tomography (cCT) and ex vivo micro CT (μCT), and also performed histology studies on the extracted bones to obtain information on the related tissue. Because there is a lack of long-term data regarding the degradation performance of magnesium-based implants, we used cCT and μCT data to evaluate the implant volume, gas volume and degradation rate of both alloying systems over a period of 148 weeks. We show that transepiphyseal implantation of Mg-Zn-Ca ESIN has no negative influence on the longitudinal bone growth in juvenile sheep, and that there is no axis deviation observed in all cases. We also illustrate that 95 % of the ESIN degraded over nearly three years, converging the time point of full resorption. We thus conclude that both, ZX10 and ZX00, constitute promising implant materials for the ESIN technique.
Collapse
Affiliation(s)
- R Marek
- Department of Orthopaedics and Traumatology, Medical University of Graz, 8010 Graz, Austria.
| | - J Eichler
- Department of Orthopaedics and Traumatology, Medical University of Graz, 8010 Graz, Austria
| | - U Y Schwarze
- Department of Orthopaedics and Traumatology, Medical University of Graz, 8010 Graz, Austria; Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - S Fischerauer
- Department of Orthopaedics and Traumatology, Medical University of Graz, 8010 Graz, Austria
| | - O Suljevic
- Department of Orthopaedics and Traumatology, Medical University of Graz, 8010 Graz, Austria
| | - L Berger
- Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - J F Löffler
- Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - P J Uggowitzer
- Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland; Chair of Nonferrous Metallurgy, Montanuniversitaet Leoben, 8700 Leoben, Austria
| | - A-M Weinberg
- Department of Orthopaedics and Traumatology, Medical University of Graz, 8010 Graz, Austria
| |
Collapse
|
4
|
Hernández-Montes V, Buitrago-Sierra R, Echeverry-Rendón M, Santa-Marín JF. Ceria-based coatings on magnesium alloys for biomedical applications: a literature review. RSC Adv 2023; 13:1422-1433. [PMID: 36712919 PMCID: PMC9829028 DOI: 10.1039/d2ra06312c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/05/2022] [Indexed: 01/11/2023] Open
Abstract
Magnesium alloys are being studied for use in temporary orthopedic implants because of their mechanical properties, which are similar to those of human bone, and their good biocompatibility. However, their application is limited due to their rapid degradation, and early loss of their mechanical properties, decreasing the stability of the implant and its proper synchronization with tissue regeneration. In this regard, various surface coatings have been used to improve their biological, physico-chemical and biodegradation properties. Currently, one of the most explored strategies is using smart coatings because of their self-healing properties that can slow down the corrosion process of Mg and its alloys. Ceria-based materials show promise as coatings for these alloys. Their unique redox capacity not only provides Mg alloys with good self-healing properties but also interesting biological properties, which are described in this paper. Despite this, some problems and challenges related to the biocompatibility and application of these materials in coatings remain unsolved. In this article, a critical review is presented summarizing the most representative literature on ceria-based coatings on Mg alloys for their potential use as biomaterials. The results show that ceria is a versatile material that may be used in industrial and biomedical applications.
Collapse
Affiliation(s)
- V Hernández-Montes
- Universidad Nacional de Colombia. Sede Medellín. Facultad de Minas. Medellín, Colombia, Grupo de Tribología y Superficies Medellín Colombia
| | - R Buitrago-Sierra
- Instituto Tecnológico Metropolitano (ITM). Facultad de Ingenierías, Grupo de Materiales Avanzados y Energía (MATyER) Medellín Colombia
| | | | - J F Santa-Marín
- Universidad Nacional de Colombia. Sede Medellín. Facultad de Minas. Medellín, Colombia, Grupo de Tribología y Superficies Medellín Colombia
- Instituto Tecnológico Metropolitano (ITM). Facultad de Ingenierías, Grupo de Materiales Avanzados y Energía (MATyER) Medellín Colombia
| |
Collapse
|
5
|
Rajan ST, Arockiarajan A. A comprehensive review of properties of the biocompatible thin films on biodegradable Mg alloys. Biomed Mater 2022; 18. [PMID: 36541465 DOI: 10.1088/1748-605x/aca85b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 12/02/2022] [Indexed: 12/05/2022]
Abstract
Magnesium (Mg) and its alloys have attracted attention as biodegradable materials for biomedical applications owing to their mechanical properties being comparable to that of bone. Mg is a vital trace element in many enzymes and thus forms one of the essential factors for human metabolism. However, before being used in biomedical applications, the early stage or fast degradation of Mg and its alloys in the physiological environment should be controlled. The degradation of Mg alloys is a critical criterion that can be controlled by a surface modification which is an effective process for conserving their desired properties. Different coating methods have been employed to modify Mg surfaces to provide good corrosion resistance and biocompatibility. This review aims to provide information on different coatings and discuss their physical and biological properties. Finally, the current withstanding challenges have been highlighted and discussed, followed by shedding some light on future perspectives.
Collapse
Affiliation(s)
- S Thanka Rajan
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India
| | - A Arockiarajan
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India.,Ceramic Technology Group-Center of Excellence in Materials and Manufacturing Futuristic Mobility, Indian Institute of Technology Madras (IIT Madras), Chennai 600036, India
| |
Collapse
|
6
|
Insight Into Corrosion of Dental Implants: From Biochemical Mechanisms to Designing Corrosion-Resistant Materials. CURRENT ORAL HEALTH REPORTS 2022; 9:7-21. [PMID: 35127334 PMCID: PMC8799988 DOI: 10.1007/s40496-022-00306-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 01/21/2022] [Indexed: 02/07/2023]
Abstract
Purpose of Review Despite advanced technologies to avoid corrosion of dental implants, the mechanisms toward the release of metals and their role in the onset of peri-implant diseases are still under-investigated. Effective knowledge on the etiopathogenesis of corrosive products and preventive strategies mitigating the risks for surface degradation are thus in dire need. This review aimed to summarize evidence toward biocorrosion in the oral environment and discuss the current strategies targeting the improvement of dental implants and focusing on the methodological and electrochemical aspects of surface treatments and titanium-based alloys. Recent Findings Recent studies suggest the existence of wear/corrosion products may correlate with peri-implantitis progress by triggering microbial dysbiosis, the release of pro-inflammatory cytokines, and animal bone resorption. Furthermore, current clinical evidence demonstrating the presence of metal-like particles in diseased tissues supports their possible role as a risk factor for peri-implantitis. For instance, to overcome the drawback of titanium corrosion, researchers are primarily focusing on developing corrosion-resistant alloys and coatings for dental implants by changing their physicochemical features. Summary The current state-of-art discussed in this review found corrosion products effective in affecting biofilm virulence and inflammatory factors in vitro. Controversial and unstandardized data are limitations, making the premise of corrosion products being essential for peri-implantitis onset. On the other hand, when it comes to the strategies toward reducing implant corrosion rate, it is evident that the chemical and physical properties are crucial for the in vitro electrochemical behavior of the implant material. For instance, it is foreseeable that the formation of films/coatings and the incorporation of some functional compounds into the substrate may enhance the material’s corrosion resistance and biological response. Nevertheless, the utmost challenge of research in this field is to achieve adequate stimulation of the biological tissues without weakening its protective behavior against corrosion. In addition, the translatability from in vitro findings to clinical studies is still in its infancy. Therefore, further accumulation of high-level evidence on the role of corrosion products on peri-implant tissues is expected to confirm the findings of the present review besides the development of better methods to improve the corrosion resistance of dental implants. Furthermore, such knowledge could further develop safe and long-term implant rehabilitation therapy.
Collapse
|
7
|
Klíma K, Ulmann D, Bartoš M, Španko M, Dušková J, Vrbová R, Pinc J, Kubásek J, Vlk M, Ulmannová T, Foltán R, Brizman E, Drahoš M, Beňo M, Machoň V, Čapek J. A Complex Evaluation of the In-Vivo Biocompatibility and Degradation of an Extruded ZnMgSr Absorbable Alloy Implanted into Rabbit Bones for 360 Days. Int J Mol Sci 2021; 22:ijms222413444. [PMID: 34948238 PMCID: PMC8706155 DOI: 10.3390/ijms222413444] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 12/27/2022] Open
Abstract
The increasing incidence of trauma in medicine brings with it new demands on the materials used for the surgical treatment of bone fractures. Titanium, its alloys, and steel are used worldwide in the treatment of skeletal injuries. These metallic materials, although inert, are often removed after the injured bone has healed. The second-stage procedure—the removal of the plates and screws—can overwhelm patients and overload healthcare systems. The development of suitable absorbable metallic materials would help us to overcome these issues. In this experimental study, we analyzed an extruded Zn-0.8Mg-0.2Sr (wt.%) alloy on a rabbit model. From this alloy we developed screws which were implanted into the rabbit tibia. After 120, 240, and 360 days, we tested the toxicity at the site of implantation and also within the vital organs: the liver, kidneys, and brain. The results were compared with a control group, implanted with a Ti-based screw and sacrificed after 360 days. The samples were analyzed using X-ray, micro-CT, and a scanning electron microscope. Chemical analysis revealed only small concentrations of zinc, strontium, and magnesium in the liver, kidneys, and brain. Histologically, the alloy was verified to possess very good biocompatibility after 360 days, without any signs of toxicity at the site of implantation. We did not observe raised levels of Sr, Zn, or Mg in any of the vital organs when compared with the Ti group at 360 days. The material was found to slowly degrade in vivo, forming solid corrosion products on its surface.
Collapse
Affiliation(s)
- Karel Klíma
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Dan Ulmann
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Martin Bartoš
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Michal Španko
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
- Department of Anatomy, 1st Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic
| | - Jaroslava Dušková
- Department of Pathology, 1st Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic;
| | - Radka Vrbová
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Jan Pinc
- Department of Functional Materials, FZU-The Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic;
| | - Jiří Kubásek
- Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic;
| | - Marek Vlk
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Tereza Ulmannová
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - René Foltán
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Eitan Brizman
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Milan Drahoš
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Michal Beňo
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Vladimír Machoň
- Department of Stomatology, General Teaching Hospital, 1st Faculty of Medicine, Charles University, Kateřinská 32, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (M.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.); (V.M.)
| | - Jaroslav Čapek
- Department of Functional Materials, FZU-The Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic;
- Correspondence:
| |
Collapse
|
8
|
Sun H, Wang Y, Sun C, Yu H, Xi Z, Liu N, Zhang N. In vivo comparison of the degradation and osteointegration properties of micro-arc oxidation-coated Mg-Sr and Mg-Ca alloy scaffolds. Biomed Mater Eng 2021; 33:209-219. [PMID: 34744060 DOI: 10.3233/bme-211300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Magnesium (Mg) alloy have biodegradation and mechanical properties that are similar to those of human bone, making it a promising candidate material for inclusion in implantable medical devices. OBJECTIVE The osteointegration effect of Mg alloy scaffolds with different corrosion rates were studied and evaluated in large bone defect models. METHOD Mg-Sr and Mg-Ca alloy scaffolds with a 20-μm Micro-arc oxidation (MAO) coating were used to repair critical bone defects for subsequent assessment of each alloy's degradation and osteointegration by X-ray, Micro-CT, fluorescence and histological examination. RESULTS At 12 weeks post-implantation, each defect was found to be effectively reconstructed by either of the Mg alloys based on X-ray and Micro-CT images. The corrosion rate (CR) of each Mg alloy - as calculated based on micro-computed tomography information - demonstrated that the MAO coating could provide effective protection for only 4 weeks post-surgery. From weeks 8 to 12, the CR of the Mg-Ca alloy scaffold increased from 1.34 ± 0.23 mm/y to 1.57 ± 0.16 mm/y. In contrast, the CR of the Mg-Sr alloy scaffold decreased from 0.58 ± 0.14 mm/y to 0.54 ± 0.16 mm/y. However, fluorescence and histological examination revealed more mature, closely and regularly arranged newborn osteocytes at the Mg-Ca scaffold-fracture interface e from weeks 8 to 12 after surgery. RESULTS The Mg-Sr scaffold was more corrosion resistant and the Mg-Ca scaffold yielded a better overall repair, which indicates that the CR of magnesium alloys matches the rate of new bone formation and is the key to repair bone defects as a bone substitute.
Collapse
Affiliation(s)
- Hongyu Sun
- Department of Orthopedics, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Yuefei Wang
- Department of Orthopedics, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Chu Sun
- Department of Orthopedics, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Haiming Yu
- Department of Orthopedics, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Zheng Xi
- Department of Orthopedics, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Na Liu
- Department of Orthopedics, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Nan Zhang
- Department of Orthopedics, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, China.,Department of Orthopaedics, Affiliated Xinhua Hospital of Dalian University, Dalian, China
| |
Collapse
|
9
|
Klíma K, Ulmann D, Bartoš M, Španko M, Dušková J, Vrbová R, Pinc J, Kubásek J, Ulmannová T, Foltán R, Brizman E, Drahoš M, Beňo M, Čapek J. Zn-0.8Mg-0.2Sr (wt.%) Absorbable Screws-An In-Vivo Biocompatibility and Degradation Pilot Study on a Rabbit Model. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3271. [PMID: 34199249 PMCID: PMC8231803 DOI: 10.3390/ma14123271] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/09/2021] [Accepted: 06/09/2021] [Indexed: 12/20/2022]
Abstract
In this pilot study, we investigated the biocompatibility and degradation rate of an extruded Zn-0.8Mg-0.2Sr (wt.%) alloy on a rabbit model. An alloy screw was implanted into one of the tibiae of New Zealand White rabbits. After 120 days, the animals were euthanized. Evaluation included clinical assessment, microCT, histological examination of implants, analyses of the adjacent bone, and assessment of zinc, magnesium, and strontium in vital organs (liver, kidneys, brain). The bone sections with the implanted screw were examined via scanning electron microscopy and energy dispersive spectroscopy (SEM-EDS). This method showed that the implant was covered by a thin layer of phosphate-based solid corrosion products with a thickness ranging between 4 and 5 µm. Only negligible changes of the implant volume and area were observed. The degradation was not connected with gas evolution. The screws were fibrointegrated, partially osseointegrated histologically. We observed no inflammatory reaction or bone resorption. Periosteal apposition and formation of new bone with a regular structure were frequently observed near the implant surface. The histological evaluation of the liver, kidneys, and brain showed no toxic changes. The levels of Zn, Mg, and Sr after 120 days in the liver, kidneys, and brain did not exceed the reference values for these elements. The alloy was safe, biocompatible, and well-tolerated.
Collapse
Affiliation(s)
- Karel Klíma
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Dan Ulmann
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Martin Bartoš
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Michal Španko
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
- Department of Anatomy, First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic
| | - Jaroslava Dušková
- Department of Pathology, First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic;
| | - Radka Vrbová
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Jan Pinc
- Department of Functional Materials, FZU The Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic;
| | - Jiří Kubásek
- Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Technická 6, 166 28 Prague, Czech Republic;
| | - Tereza Ulmannová
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - René Foltán
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Eitan Brizman
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Milan Drahoš
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Michal Beňo
- Department of Stomatology—Maxillofacial Surgery, General Teaching Hospital and First Faculty of Medicine, Charles University, 121 08 Prague, Czech Republic; (K.K.); (D.U.); (M.B.); (M.Š.); (R.V.); (T.U.); (R.F.); (E.B.); (M.D.); (M.B.)
| | - Jaroslav Čapek
- Department of Functional Materials, FZU The Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic;
| |
Collapse
|
10
|
Zhang N, Wang W, Zhang X, Nune KC, Zhao Y, Liu N, Misra R, Yang K, Tan L, Yan J. The effect of different coatings on bone response and degradation behavior of porous magnesium-strontium devices in segmental defect regeneration. Bioact Mater 2021; 6:1765-1776. [PMID: 33313453 PMCID: PMC7718143 DOI: 10.1016/j.bioactmat.2020.11.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 11/10/2020] [Accepted: 11/17/2020] [Indexed: 12/12/2022] Open
Abstract
Regeneration of long-bone segmental defects remains a challenge for orthopedic surgery. Current treatment options often require several revision procedures to maintain acceptable alignment and achieve osseous healing. A novel hollow tubular system utilizing magnesium-strontium (Mg-Sr) alloy with autogenous morselized bone filled inside to repair segmental defects was developed. To improve the corrosion and biocompatible properties, two coatings, Ca-P and Sr-P coatings, were prepared on surface of the implants. Feasibility of applying these coated implants was systematically evaluated in vitro and in vivo, and simultaneously to have a better understanding on the relationship of degradation and bone regeneration on the healing process. According to the in vitro corrosion study by electrochemical measurements, greater corrosion resistance was obtained for Ca-P coated sample, and attributed to the double-layer protective structure. The cytotoxicity and alkaline phosphatase (ALP) assays demonstrated enhanced bioactivity for Sr-P coated group because of the long-lasting release of beneficial Sr2+. At 12 weeks post-implantation with Mg-Sr alloy porous device, the segmental defects were effectively repaired with respect to both integrity and continuity. In addition, compared with the Ca-P coated implant, the Sr-P coated implant was more proficient at promoting bone formation and mineralization. In summary, the Sr-P coated implants have bioactive properties and exceptional durability, and promote bone healing that is close to the natural rate, implying their potential application for the regeneration of segmental defects.
Collapse
Affiliation(s)
- Nan Zhang
- Department of Orthopedic Surgery, The 2nd Affiliated Hospital of Qiqihar Medical University, Qiqihar, 161000, China
- Department of Orthopedic Surgery, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150081, China
| | - Weidan Wang
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, 116001, China
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Xiuzhi Zhang
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, 116001, China
| | - Krishna. C. Nune
- Department of Metallurgical, Material and Biomedical Engineering, The University of Texas at EI Paso, TX, 79968, USA
| | - Ying Zhao
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Na Liu
- Department of Orthopedic Surgery, The 2nd Affiliated Hospital of Qiqihar Medical University, Qiqihar, 161000, China
| | - R.D.K. Misra
- Department of Metallurgical, Material and Biomedical Engineering, The University of Texas at EI Paso, TX, 79968, USA
| | - Ke Yang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Lili Tan
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Jinglong Yan
- Department of Orthopedic Surgery, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150081, China
| |
Collapse
|
11
|
Mardali M, Salimijazi H, Karimzadeh F, Blawert C, Luthringer-Feyerabend BC, Fazel M, Safarbali B. Microstructure and Corrosion Characterization of a MgO/Hydroxyapatite Bilayer Coating by Plasma Electrolytic Oxidation Coupled with Flame Spraying on a Mg Alloy. ACS OMEGA 2020; 5:24186-24194. [PMID: 33015434 PMCID: PMC7528172 DOI: 10.1021/acsomega.0c01574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
Thermally sprayed hydroxyapatite coatings are one of the main strategies to improve the bioactivation of metal implants. However, the naturally low corrosion resistance of these coatings is the main challenge for their use. In this study, plasma electrolytic oxidation (PEO) was used to create an intermediate layer. The anodization process was used for comparison. According to the polarization curves, the PEO layer was more effective than the anodized layer in reducing the corrosion current density (I corr of 0.05 × 10-9 A/cm2 vs I corr of 0.05 A/cm2). The results of electrochemical impedance spectroscopy showed higher resistance of the sample with a PEO interlayer than that of the sample with an anodized interlayer. The results of the hydrogen evolution test revealed that the PEO layer as a middle layer served as the main barrier for reducing the magnesium corrosion rate, especially during the initial immersion time.
Collapse
Affiliation(s)
- Marzieh Mardali
- Institute
of Materials Research, Helmholtz-Zentrum
Geesthacht, Geesthacht 21502, Germany
| | - Hamidreza Salimijazi
- Department
of Materials Engineering, Isfahan University
of Technology, Isfahan 84156-83111, Iran
| | - Fathallah Karimzadeh
- Department
of Materials Engineering, Isfahan University
of Technology, Isfahan 84156-83111, Iran
| | - Carsten Blawert
- Institute
of Materials Research, Helmholtz-Zentrum
Geesthacht, Geesthacht 21502, Germany
| | | | - Mohammad Fazel
- Department
of Materials Engineering, Isfahan University
of Technology, Isfahan 84156-83111, Iran
| | - Babak Safarbali
- Department
of Materials Engineering, Isfahan University
of Technology, Isfahan 84156-83111, Iran
| |
Collapse
|