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Sun Y, Liu Q, Yu Z, Ren L, Zhao X, Wang J. Study on Osseointegration Capability of β-Type Ti-Nb-Zr-Ta-Si Alloy for Orthopedic Implants. MATERIALS (BASEL, SWITZERLAND) 2024; 17:472. [PMID: 38276411 PMCID: PMC10820894 DOI: 10.3390/ma17020472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/09/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024]
Abstract
Osseointegration is the basic condition for orthopedic implants to maintain long-term stability. In order to achieve osseointegration, a low elastic modulus is the most important performance indicator. It is difficult for traditional titanium alloys to meet this requirement. A novel β-titanium alloy (Ti-35Nb-7Zr-5Ta)98Si2 was designed, which had excellent strength (a yield strength of 1296 MPa and a breaking strength 3263 MPa), an extremely low elastic modulus (37 GPa), and did not contain toxic elements. In previous in vitro studies, we confirmed the good biocompatibility of this alloy and similar bioactivity to Ti-6Al-4V, but no in vivo study was performed. In this study, Ti-6Al-4V and (Ti-35Nb-7Zr-5Ta)98Si2 were implanted into rabbit femurs. Imaging evaluation and histological morphology were performed, and the bonding strength and bone contact ratio of the two alloys were measured and compared. The results showed that both alloys remained in their original positions 3 months after implantation, and neither imaging nor histological observations found inflammatory reactions in the surrounding bone. The bone-implant contact ratio and bonding strength of (Ti-35Nb-7Zr-5Ta)98Si2 were significantly higher than those of Ti-6Al-4V. The results confirmed that (Ti-35Nb-7Zr-5Ta)98Si2 has a better osseointegration ability than Ti-6Al-4V and is a promising material for orthopedic implants.
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Affiliation(s)
- Yu Sun
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, China;
| | - Qingping Liu
- Key of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China; (Q.L.); (Z.Y.); (L.R.)
| | - Zhenglei Yu
- Key of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China; (Q.L.); (Z.Y.); (L.R.)
| | - Luquan Ren
- Key of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China; (Q.L.); (Z.Y.); (L.R.)
| | - Xin Zhao
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, China;
| | - Jincheng Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, China;
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Effect of phase and elemental composition, structure, and texture of multilayer coatings based on TiCN and TiNbCN on the electrochemical behavior of high-speed steel in 3% NaCl solution. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Innovative Coatings of Metallic Alloys Used as Bioactive Surfaces in Implantology: A Review. COATINGS 2021. [DOI: 10.3390/coatings11060649] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metallic implants are widely used in the field of implantology, but there are still problems leading to implant failures due to weak osseointegration, low mechanical strength for the implant, inadequate antibacterial properties, and low patient satisfaction. Implant failure can be caused by bacterial infections and poor osteointegration. To improve the implant functionalization, many researchers focus on surface modifications to prepare the proper physical and chemical conditions able to increase biocompatibility and osteointegration between implant and bone. Improving the antibacterial performance is also a key factor to avoid the inflammation in the human body. This paper is a brief review for the types of coatings used to increase osseointegration and biocompatibility for the successful use of metal alloys in the field of implantology.
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Rashid S, Sebastiani M, Mughal MZ, Daniel R, Bemporad E. Influence of the Silver Content on Mechanical Properties of Ti-Cu-Ag Thin Films. NANOMATERIALS 2021; 11:nano11020435. [PMID: 33572136 PMCID: PMC7915568 DOI: 10.3390/nano11020435] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 01/29/2021] [Accepted: 02/05/2021] [Indexed: 12/21/2022]
Abstract
In this work, the ternary titanium, copper, and silver (Ti-Cu-Ag) system is investigated as a potential candidate for the production of mechanically robust biomedical thin films. The coatings are produced by physical vapor deposition—magnetron sputtering (MS-PVD). The composite thin films are deposited on a silicon (100) substrate. The ratio between Ti and Cu was approximately kept one, with the variation of the Ag content between 10 and 35 at.%, while the power on the targets is changed during each deposition to get the desired Ag content. Thin film characterization is performed by X-ray diffraction (XRD), nanoindentation (modulus and hardness), to quantitatively evaluate the scratch adhesion, and atomic force microscopy to determine the surface topography. The residual stresses are measured by focused ion beam and digital image correlation method (FIB-DIC). The produced Ti-Cu-Ag thin films appear to be smooth, uniformly thick, and exhibit amorphous structure for the Ag contents lower than 25 at.%, with a transition to partially crystalline structure for higher Ag concentrations. The Ti-Cu control film shows higher values of 124.5 GPa and 7.85 GPa for modulus and hardness, respectively. There is a clear trend of continuous decrease in the modulus and hardness with the increase of Ag content, as lowest value of 105.5 GPa and 6 GPa for 35 at.% Ag containing thin films. In particular, a transition from the compressive (−36.5 MPa) to tensile residual stresses between 229 MPa and 288 MPa are observed with an increasing Ag content. The obtained results suggest that the Ag concentration should not exceed 25 at.%, in order to avoid an excessive reduction of the modulus and hardness with maintaining (at the same time) the potential for an increase of the antibacterial properties. In summary, Ti-Cu-Ag thin films shows characteristic mechanical properties that can be used to improve the properties of biomedical implants such as Ti-alloys and stainless steel.
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Affiliation(s)
- Saqib Rashid
- Engineering Department, University of Rome “Roma Tre”, via della Vasca Navale 79, 00146 Rome, Italy; (M.S.); (M.Z.M.); (E.B.)
- Correspondence:
| | - Marco Sebastiani
- Engineering Department, University of Rome “Roma Tre”, via della Vasca Navale 79, 00146 Rome, Italy; (M.S.); (M.Z.M.); (E.B.)
| | - Muhammad Zeeshan Mughal
- Engineering Department, University of Rome “Roma Tre”, via della Vasca Navale 79, 00146 Rome, Italy; (M.S.); (M.Z.M.); (E.B.)
- School of Engineering & Innovation, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
| | - Rostislav Daniel
- Department of Materials Science, University of Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria;
| | - Edoardo Bemporad
- Engineering Department, University of Rome “Roma Tre”, via della Vasca Navale 79, 00146 Rome, Italy; (M.S.); (M.Z.M.); (E.B.)
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In Vitro Corrosion and Tribocorrosion Performance of Biocompatible Carbide Coatings. COATINGS 2020. [DOI: 10.3390/coatings10070654] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The present study aims to explain the corrosion and the tribocorrosion performance in simulated conditions of the human body by the level of stress, adhesion of coating to substrate, roughness, and hardness. The coatings were synthesized by the cathodic arc evaporation method on 316L stainless steel substrates to be used for load bearing implants. Structure, elemental, and phase compositions were studied by means of energy dispersive spectrometry and X-ray diffraction, respectively. The grain size and strain of the coatings were determined by the Williamson–Hall plot method. Tests on hardness, adhesion, roughness, and electrochemical behavior in 0.9% NaCl solution at 37 ± 0.5 °C were carried out. Tribocorrosion performances, evaluated by measuring the friction coefficient and wear rate, were conducted in 0.9% NaCl solution using the pin on disc method at 37 ± 0.5 °C. TiC and ZrC exhibited a (111) preferred orientation, while TiNbC had a (200) orientation and the smallest crystallite size (8.1 nm). TiC was rougher than ZrC and TiNbC; the lowest roughness was found for TiNbC coatings. The highest hardness and adhesion values were found for TiNbC, followed by TiC and the ZrC. All coatings improved the corrosion resistance of 316L steels, but TiNbC showed the best corrosion behavior. TiNbC had the lowest friction coefficient (1.6) and wear rate (0.99 × 10−5 mm3·N−1∙m−1) values, indicating the best tribocorrosive performance in 0.9% NaCl at 37 ± 0.5 °C.
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Effects of Hard Thin-Film Coatings on Adhesion of Early Colonizer Bacteria Over Titanium Surfaces. IMPLANT DENT 2017; 25:114-21. [PMID: 26540365 DOI: 10.1097/id.0000000000000355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE The purpose of this in vitro study was to evaluate the effect of diamond-like carbon (DLC) and titanium (Ti) nitride coatings over Ti surfaces on the adhesion of early colonizer bacteria. MATERIALS AND METHODS Specimens were divided into 3 groups (n = 10) according to different surface modifications: titanium nitride (TiN)-coated Ti discs (experimental group 1), DLC-coated Ti discs (experimental group 2), and uncoated polished Ti discs (control group). Discs were incubated in bacterial cell suspension (Streptococcus mutans and Streptococcus sanguis) for 1 hour, and the single colonies formed by adhering bacteria were counted by fluorescence microscopy. Surface roughness and topography were examined by atomic force microscopy. RESULTS The surface roughness of DLC was lower than TiN coating and the control group. Statistically significant reduction of the number of adherent bacteria was observed on DLC-coated surfaces. CONCLUSIONS DLC coating over Ti surfaces strongly inhibits the adhesion of early colonizer oral bacteria.
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Sukhorukova IV, Sheveyko AN, Kiryukhantsev-Korneev PV, Levashov EA, Shtansky DV. In vitro bioactivity study of TiCaPCO(N) and Ag-doped TiCaPCO(N) films in simulated body fluid. J Biomed Mater Res B Appl Biomater 2015; 105:193-203. [PMID: 26461975 DOI: 10.1002/jbm.b.33534] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 08/28/2015] [Accepted: 09/12/2015] [Indexed: 01/04/2023]
Abstract
Bioactivity of multicomponent TiCaPCO(N) and Ag-doped TiCaPCO(N) films was evaluated in vitro using simulated body fluid (SBF) and compared with that of bioactive glass Biogran. The first group of films was fabricated by magnetron sputtering of composite TiС0.5 -Ti3 POx -CaO target produced via the self-propagating high-temperature synthesis (SHS) method (TiCaPCON films), after which their surface was implanted with Ag+ ions to obtain Ag-doped TiCaPCON films. The second group of films was fabricated by pulsed electrospark deposition (PED) using SHS-produced composite TiС0.5 -Ti3 POx -CaO and TiС0.5 -Ti3 POx -CaO-Ag electrodes. After immersion in SBF, the structure and chemistry of surface were well characterized using a combination of various microanalytical techniques, such as scanning electron microscopy, X-ray diffractometry (both in conventional and grazing incidence mode), Fourier transform infrared spectroscopy, Raman spectroscopy, and glow discharge optical emission spectroscopy. The results showed that the surfaces of the TiCaPCO(N) and Ag-doped TiCaPCO(N) films were bioactive in vitro and induced the formation of an apatite layer during exposure in SBF. In the case of the magnetron-sputtered films, the apatite layer was formed over 14 days, while 28 days were needed to form CaP phase on the surface of PED-modified samples. Various factors (film structure, surface roughness, surface functional groups, surface charge, and composition, supersaturation, and near-surface local supersaturation of SBF) affecting the kinetics of bone-like apatite formation on a bioactive surface are discussed. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 193-203, 2017.
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Affiliation(s)
- I V Sukhorukova
- National University of Science and Technology "MISIS", Leninsky Prospect 4, Moscow, 119049, Russia
| | - A N Sheveyko
- National University of Science and Technology "MISIS", Leninsky Prospect 4, Moscow, 119049, Russia
| | | | - E A Levashov
- National University of Science and Technology "MISIS", Leninsky Prospect 4, Moscow, 119049, Russia
| | - D V Shtansky
- National University of Science and Technology "MISIS", Leninsky Prospect 4, Moscow, 119049, Russia
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Rodríguez-Hernández MG, Jiménez O, Alvarado-Hernández F, Flores M, Andrade E, Canto CE, Ávila C, Espinoza-Beltrán F. The effect of C content on the mechanical properties of Ti-Zr coatings. J Mech Behav Biomed Mater 2015; 49:269-76. [PMID: 26056996 DOI: 10.1016/j.jmbbm.2015.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 04/27/2015] [Accepted: 05/07/2015] [Indexed: 11/19/2022]
Abstract
In this study, Ti-Zr and Ti-Zr-C coatings were deposited at room temperature via pulsed-DC magnetron sputtering. A 70Ti-30Zr at% target and a 99.99% graphite plate were used to deposit samples. In order to modify C content, coatings were deposited at different target powers such as 50, 75 and 100 W. Changes on the structure, microstructure and mechanical properties due to C addition were studied. Results indicate that the as-deposited coatings were partly crystalline and that an increment on C content stabilized α' phase and inhibited the appearance of ω precipitates. Therefore, Ti-Zr-C alloys with C>1.9 at% showed only α' phase whereas the others alloys exhibited α'+ω structures. Hardness values from 12.94 to 34.31 GPa were obtained, whereas the elastic modulus was found between 181.84 and 298 GPa. Finally, a high elastic recovery ratio (0.69-0.87) was observed as a function of composition. The overall properties of these coatings were improved due to C content increment, martensitic α' phase and nanocrystalline grain size (10-16 nm).
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Affiliation(s)
- M G Rodríguez-Hernández
- Departamento de Ingeniería de Proyectos, Universidad de Guadalajara, José Guadalupe Zuno 48, Zapopan, Jalisco 45100, Mexico.
| | - O Jiménez
- Departamento de Ingeniería de Proyectos, Universidad de Guadalajara, José Guadalupe Zuno 48, Zapopan, Jalisco 45100, Mexico
| | - F Alvarado-Hernández
- Unidad Académica de Ingeniería I, Universidad Autónoma de Zacatecas, Av. López Velarde 801, Zacatecas, Zacatecas 98060, Mexico
| | - M Flores
- Departamento de Ingeniería de Proyectos, Universidad de Guadalajara, José Guadalupe Zuno 48, Zapopan, Jalisco 45100, Mexico
| | - E Andrade
- Instituto de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica Ciudad Universitaria S/N, D.F. 04510, Mexico
| | - C E Canto
- Instituto de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica Ciudad Universitaria S/N, D.F. 04510, Mexico
| | - C Ávila
- Centro de Investigación y Estudios Avanzados del I.P.N., Libramiento Norponiente 2000, Querétaro, Querétaro 76230, Mexico
| | - F Espinoza-Beltrán
- Centro de Investigación y Estudios Avanzados del I.P.N., Libramiento Norponiente 2000, Querétaro, Querétaro 76230, Mexico
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Pauline SA, Rajendran N. Effect of Sr on the bioactivity and corrosion resistance of nanoporous niobium oxide coating for orthopaedic applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 36:194-205. [DOI: 10.1016/j.msec.2013.12.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 11/15/2013] [Accepted: 12/06/2013] [Indexed: 01/29/2023]
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10
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Corrosion Behaviour of Ti-6Al-4V Alloy with Nitride Coatings in Simulated Body Fluids at 36∘C and 40∘C. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/241830] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nitride coatings were formed on Ti-6Al-4V alloy by thermodiffusion treatment. The corrosion-electrochemical behaviour of Ti-6Al-4V alloy with nitride coatings I and II was investigated in physiological solutions (0.9% NaCl and Tyrode's) at temperatures of 36∘C and 40∘C. It is determined that nitride coating I provides Ti-6Al-4V alloy the higher corrosion resistance in Tyrode's solution at both temperatures of solution while nitride coating II in isotonic 0.9% NaCl.
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Shtansky DV, Levashov EA, Batenina IV, Gloushankova NA, Anisimova NY, Kiselevsky MV, Reshetov IV. Recent progress in the field of multicomponent bioactive nanostructured films. RSC Adv 2013. [DOI: 10.1039/c3ra23325a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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12
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Li Z, Kawashita M, Kudo TA, Kanetaka H. Sol-gel synthesis, characterization, and in vitro compatibility of iron nanoparticle-encapsulating silica microspheres for hyperthermia in cancer therapy. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2461-9. [PMID: 22890516 DOI: 10.1007/s10856-012-4735-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 07/25/2012] [Indexed: 05/11/2023]
Abstract
We prepared iron nanoparticle-encapsulating silica (FeSi) microspheres and tested their suitability as thermal seeds for hyperthermia in cancer therapy. These microspheres were prepared by introducing a ferric ion (Fe(3+)) into microspheres of a SiO(2) gel matrix derived from the hydrolysis of tetramethoxysilane in a water-in-oil emulsion that was then heat-treated at 850 °C in an argon atmosphere. The particles obtained were 5-30 μm in size and had a saturation magnetization up to 21 emu g(-1) and a coercive force of 86-133 Oe. Heat generation in an alternating current magnetic field of 300 Oe at 100 kHz was estimated to be 7.7-28.9 W g(-1). The in vitro cell biocompatibility of the microspheres was assessed by culturing rat fibroblast Rat-1 cells in medium supplemented with microspheres containing 6.7 % of iron nanoparticles. At microsphere concentrations of <7.5 g L(-1) proliferation of Rat-1 cells was not significantly inhibited.
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Affiliation(s)
- Zhixia Li
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
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13
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Li Z, Kawamura K, Kawashita M, Kudo TA, Kanetaka H, Hiraoka M. In vitroassessment of poly(methylmethacrylate)-based bone cement containing magnetite nanoparticles for hyperthermia treatment of bone tumor. J Biomed Mater Res A 2012; 100:2537-45. [DOI: 10.1002/jbm.a.34185] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Revised: 02/26/2012] [Accepted: 03/12/2012] [Indexed: 11/08/2022]
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Pham VH, Yook SW, Lee EJ, Li Y, Jeon G, Lee JJ, Kim HE, Koh YH. Deposition of TiN films on Co-Cr for improving mechanical properties and biocompatibility using reactive DC sputtering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:2231-2237. [PMID: 21837553 DOI: 10.1007/s10856-011-4410-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Accepted: 07/28/2011] [Indexed: 05/31/2023]
Abstract
This study reports the deposition of TiN films on Co-Cr substrates to improve the substrates' mechanical properties and biological properties. In particular, the argon to nitrogen (Ar:N(2)) gas flow ratio was adjusted to control the microstructure of the TiN films. A Ti interlayer was also used to enhance the adhesion strength between the Co-Cr substrate and TiN films. A series of TiN films, which are denoted as TiN-(Ar/N(2))1:1, Ti/TiN-(Ar/N(2))1:1, and Ti/TiN-(Ar:N(2))1:3, were deposited by reactive DC sputtering. All the deposited TiN films showed a dense, columnar structure with a preferential orientation of the (200) plane. These TiN films increased the mechanical properties of Co-Cr, such as the critical load during scratch testing, hardness, elastic modulus and plastic resistance. In addition, the biological properties of the Co-Cr substrates, i.e. initial attachment, proliferation, and cellular differentiation of the MC3T3-E1 cells, were improved considerably by deposition of the TiN films. These results suggest that TiN films would effectively enhance both the mechanical properties and biocompatibility of biomedical Co-Cr alloys.
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Affiliation(s)
- Vuong-Hung Pham
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Seoul, 151-744, Korea
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Abstract
Among various dental materials and their successful applications, a dental implant is a good example of the integrated system of science and technology involved in multiple disciplines including surface chemistry and physics, biomechanics, from macro-scale to nano-scale manufacturing technologies and surface engineering. As many other dental materials and devices, there are crucial requirements taken upon on dental implants systems, since surface of dental implants is directly in contact with vital hard/soft tissue and is subjected to chemical as well as mechanical bio-environments. Such requirements should, at least, include biological compatibility, mechanical compatibility, and morphological compatibility to surrounding vital tissues. In this review, based on carefully selected about 500 published articles, these requirements plus MRI compatibility are firstly reviewed, followed by surface texturing methods in details. Normally dental implants are placed to lost tooth/teeth location(s) in adult patients whose skeleton and bony growth have already completed. However, there are some controversial issues for placing dental implants in growing patients. This point has been, in most of dental articles, overlooked. This review, therefore, throws a deliberate sight on this point. Concluding this review, we are proposing a novel implant system that integrates materials science and up-dated surface technology to improve dental implant systems exhibiting bio- and mechano-functionalities.
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Kolobov YR. Nanotechnologies for the formation of medical implants based on titanium alloys with bioactive coatings. ACTA ACUST UNITED AC 2010. [DOI: 10.1134/s1995078009110020] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shtansky DV, Bashkova IA, Kiryukhantsev-Korneev PV, Sheveiko AN, Levashov EA, Moore J, Gloushankova NA. Bioactive ceramic tantalum-doped films for implants. DOKL BIOCHEM BIOPHYS 2008; 418:8-10. [PMID: 18429596 DOI: 10.1134/s160767290801002x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- D V Shtansky
- State Technological University Moscow Institute of Steel and Alloys, Moscow, Russia
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Park YG, Wey MY, Hong SI. Enhanced wear and fatigue properties of Ti-6Al-4V alloy modified by plasma carburizing/CrN coating. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2007; 18:925-31. [PMID: 17143738 DOI: 10.1007/s10856-006-0014-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2005] [Accepted: 12/29/2005] [Indexed: 05/12/2023]
Abstract
In this study, a newly developed duplex coating method incorporating plasma carburization and CrN coating was applied to Ti-6Al-4V and its effects on the wear resistance and fatigue life were investigated. The carburized layer with approximately150 microm in depth and CrN coating film with 7.5 microm in thickness were formed after duplex coating. Hard carbide particles such as TiC And V(4)C(3) were formed in the carburized layer. XRD diffraction pattern analysis revealed that CrN film had predominant [111] and [200] textures. The hardness (Hv) was significantly improved up to about 1,960 after duplex coating while the hardness value of original Ti-6Al-4V was 402. The threshold load for the modification and/or failure of CrN coating was measured to be 32 N using the acoustic emission technique. The wear resistance and fatigue life of duplex-coated Ti-6Al-4V improved significantly compared to those of un-treated specimen. The enhanced wear resistance can be attributed to the excellent adhesion and improved hardness of CrN coating film for the duplex-coated Ti-6Al-4V. The initiation of fatigue cracks is likely to be retarded by the presence of hard and strong layers on the surface, resulting in the enhanced fatigue life.
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Affiliation(s)
- Y G Park
- Department of Materials Engineering, Chungbuk National University, Cheongju, Korea
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Shtansky DV, Gloushankova NA, Bashkova IA, Kharitonova MA, Moizhess TG, Sheveiko AN, Kiryukhantsev-Korneev FV, Petrzhik MI, Levashov EA. Multifunctional Ti-(Ca,Zr)-(C,N,O,P) films for load-bearing implants. Biomaterials 2006; 27:3519-31. [PMID: 16530825 DOI: 10.1016/j.biomaterials.2006.02.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2005] [Accepted: 02/14/2006] [Indexed: 10/24/2022]
Abstract
Films of Ti-Ca-P-C-O-(N), Ti-Ca-C-O-(N) and Ti-Zr-C-O-(N) were deposited by DC magnetron sputtering or ion implantation-assisted magnetron sputtering of composite targets TiC0.5 + 10%Ca10(PO4)6(OH)2, TiC0.5 + 20%(CaO + TiO2) and TiC0.5 + 10%ZrO2 in an Ar atmosphere or reactively in a gaseous mixture of Ar + 14%N2. The microstructure, elemental and phase composition of films were studied by means of X-ray diffraction, transmission electron microscopy, scanning force microscopy, X-ray photoelectron spectroscopy and energy-dispersive X-ray spectroscopy. The films were characterized in terms of their hardness, Young's modulus, elastic recovery, adhesion strength, and friction and wear both in air and under physiological solution. Particular attention was paid to the analysis of deformation and fracture for various film/substrate systems during scratch testing. The biocompatibility of the films was evaluated by both in vitro and in vivo experiments. In vitro studies involved the investigation of adhesion, spreading, and proliferation of MC3T3-E1 osteoblasts and IAR-2 epithelial cells, morphometric analysis, actin cytoskeleton, focal contacts staining, alkaline phosphatase activity and von Kossa staining of osteoblastic culture. Cell culture experiments demonstrated an increase of osteoblastic proliferation on Ca- and P-incorporated films. In vivo studies were fulfilled by subcutaneous implantation of Teflon plates coated with the tested films in mice and analysis of the population of adherent cells on their surfaces. The results obtained show that multicomponent nanostructured Ti-(Ca, Zr)-(C, N, O, P) films possess a combination of high hardness, wear resistance and adhesion strength, reduced Young's modulus, low friction coefficient and high biocompatibility.
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Affiliation(s)
- D V Shtansky
- Moscow State Institute of Steel and Alloys, Leninsky pr. 4, Moscow 119049, Russian Federation.
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Shtanskii DV, Bashkova IA, Levashov EA, Chipysheva TA, Vasil'ev YM, Glushankova NA. Multifunction Nanostructural Coatings for Load-bearing Implants. DOKL BIOCHEM BIOPHYS 2005; 404:336-8. [PMID: 16392750 DOI: 10.1007/s10628-005-0107-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- D V Shtanskii
- Moscow State Institute of Steel and Alloys, Technological University, Leninskii pr. 4, Moscow, 119049 Russia
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