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Kandaswamy E, Harsha M, Joshi VM. Titanium corrosion products from dental implants and their effect on cells and cytokine release: A review. J Trace Elem Med Biol 2024; 84:127464. [PMID: 38703537 DOI: 10.1016/j.jtemb.2024.127464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
INTRODUCTION Titanium is considered to be an inert material owing to the ability of the material to form a passive titanium oxide layer. However, once the titanium oxide layer is lost, it can lead to exposure of the underlying titanium substructure and can undergo corrosion. SUMMARY The article explores the role of titanium ions and particles from dental implants on cells, cytokine release, and on the systemic redistribution of these particles as well as theories proposed to elucidate the effects of these particles on peri-implant inflammation based on evidence from in-vitro, human, and animal studies. Titanium particles and ions have a pro-inflammatory and cytotoxic effect on cells and promote the release of pro-inflammatory mediators like cytokines. Three theories to explain etiopathogenesis have been proposed, one based on microbial dysbiosis, the second based on titanium particles and ions and the third based on a synergistic effect between microbiome and titanium particles on the host. CONCLUSION There is clear evidence from in-vitro and limited human and animal studies that titanium particles released from dental implants have a detrimental effect on cells directly and through the release of pro-inflammatory cytokines. Future clinical and translational studies are required to clarify the role of titanium particles and ions in peri-implant inflammation and the etiopathogenesis of peri-implantitis.
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Affiliation(s)
- Eswar Kandaswamy
- Department of Periodontics, LSUHSC, School of Dentistry, 100 Florida Avenue, New Orleans, LA 70119, USA
| | - M Harsha
- Department of Oral Pathology & Microbiology, Yogita Dental College & Hospital, Naringi Riverside, At Post Tal Dist. SH104, Khed, Maharashtra 415709, India
| | - Vinayak M Joshi
- Department of Periodontics, LSUHSC, School of Dentistry, 100 Florida Avenue, New Orleans, LA 70119, USA.
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Olšovská E, Mikušová ML, Tulinská J, Rollerová E, Vilamová Z, Líšková A, Horváthová M, Szabová M, Svoboda L, Gabor R, Hajnyš J, Dvorský R, Kukutschová J, Lukán N. Immunotoxicity of stainless-steel nanoparticles obtained after 3D printing. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 272:116088. [PMID: 38350218 DOI: 10.1016/j.ecoenv.2024.116088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/15/2024]
Abstract
This study aims to investigate the in vitro effects of nanoparticles (NPs) produced during the selective laser melting (SLM) of 316 L stainless steel metal powder on the immune response in a human blood model. Experimental data did not reveal effect on viability of 316 L NPs for the tested doses. Functional immune assays showed a significant immunosuppressive effect of NPs. There was moderate stimulation (117%) of monocyte phagocytic activity without significant changes in phagocytic activity and respiratory burst of granulocytes. A significant dose-dependent increase in the levels of the pro-inflammatory cytokine TNF-a was found in blood cultures treated with NPs. On the contrary, IL-8 chemokine levels were significantly suppressed. The levels of the pro-inflammatory cytokine IL-6 were reduced by only a single concentration of NPs. These new findings can minimise potential health risks and indicate the need for more research in this area.
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Affiliation(s)
- Eva Olšovská
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic; Faculty of Material Science and Technology, Centre for Advanced Innovation Technologies, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic.
| | - Miroslava Lehotská Mikušová
- Institute of Immunology and Allergology, Faculty of Medicine, Slovak Medical University, Limbová 12, 833 03, Slovakia
| | - Jana Tulinská
- Institute of Immunology and Allergology, Faculty of Medicine, Slovak Medical University, Limbová 12, 833 03, Slovakia
| | - Eva Rollerová
- Institute of Immunology and Allergology, Faculty of Medicine, Slovak Medical University, Limbová 12, 833 03, Slovakia
| | - Zuzana Vilamová
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic; Faculty of Materials and Technology, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Aurélia Líšková
- Institute of Immunology and Allergology, Faculty of Medicine, Slovak Medical University, Limbová 12, 833 03, Slovakia
| | - Mira Horváthová
- Institute of Immunology and Allergology, Faculty of Medicine, Slovak Medical University, Limbová 12, 833 03, Slovakia
| | - Michaela Szabová
- Institute of Immunology and Allergology, Faculty of Medicine, Slovak Medical University, Limbová 12, 833 03, Slovakia
| | - Ladislav Svoboda
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Roman Gabor
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Jiří Hajnyš
- Department of Machining, Assembly and Engineering Metrology, Faculty of Mechanical Engineering, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Richard Dvorský
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Jana Kukutschová
- Faculty of Material Science and Technology, Centre for Advanced Innovation Technologies, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Norbert Lukán
- Institute of Immunology and Allergology, Faculty of Medicine, Slovak Medical University, Limbová 12, 833 03, Slovakia
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Pesce P, Del Fabbro M, Modenese L, Sandron S, Francetti L, Isola G, Canullo L, Menini M. Influence of implant diameter on implant survival rate and clinical outcomes in the posterior area: a systematic review and meta-analysis. BMC Oral Health 2023; 23:235. [PMID: 37085829 PMCID: PMC10122303 DOI: 10.1186/s12903-023-02962-8] [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: 10/01/2022] [Accepted: 04/11/2023] [Indexed: 04/23/2023] Open
Abstract
OBJECTIVE The aim of the present systematic review was to test the hypothesis that the diameter of implants inserted in the posterior area affects implant survival rate, prosthetic survival rate and peri-implant parameters (bleeding on probing (BoP), marginal bone loss (MBL), pocket probing depth (PPD)). MATERIALS AND METHODS An electronic search of studies published until December 2021 was done on three databases (Pubmed, Scopus, Cochrane) independently by two authors. Clinical trials comparing implant survival rate, BoP, MBL and PPD among narrow diameter implants (NDI: ≥ 3.0 mm to < 3.75 mm) and regular diameter implants (RDI ≥ 3.75 mm to < 5 mm) were included. Data were independently extracted by two reviewers. Risk of bias was evaluated according to the Cochrane risk-of-bias tool for randomized studies and to the Joanna Briggs Institute Critical Appraisal tools for non-randomized ones. A pair-wise meta-analysis was conducted on the included studies. RESULTS Seven articles were included out of the 4291 identified from the digital research. Overall, a total of 939 implants were inserted (319 NDI, 620 RDI). Only one study was judged at serious risk of bias. No statistically significant difference was found in implant survival rate (risk ratio 1.01 (95% CI [0.98 to 1.04], P = 0.67)) while the difference was significant for BoP (mean difference 2.89 (95% CI [0.30 to 5.48] mm, P = 0.03)) with higher values for NDI. Higher MBL was identified among regular diameter implants (mean difference -0.15 mm (95% CI [-0.32 to 0.01 mm], P = 0.07). No statistically significant differences were identified for prosthetic survival and PPD. CONCLUSIONS No differences were found in implant survival rate between narrow and regular implants. A higher BoP was identified among narrow implants, but there was no higher bone loss. It is not possible to draw definitive conclusions about the use of narrow-diameter implants in the posterior region.
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Affiliation(s)
- Paolo Pesce
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Ospedale S. Martino, L. Rosanna Benzi 10, 16132, Genoa, Italy.
| | - Massimo Del Fabbro
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Laura Modenese
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- IRCCS Orthopedic Institute Galeazzi, Dental Clinic, Milan, Italy
| | - Stefano Sandron
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Ospedale S. Martino, L. Rosanna Benzi 10, 16132, Genoa, Italy
| | - Luca Francetti
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- IRCCS Orthopedic Institute Galeazzi, Dental Clinic, Milan, Italy
| | - Gaetano Isola
- Department of General Surgery and Surgical-Medical SpecialtiesSchool of Dentistry, University of Catania Via S, Sofia 78, Pad. 2 Piano -1 Stanza 53, 95124, Catania, Italy
| | - Luigi Canullo
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Ospedale S. Martino, L. Rosanna Benzi 10, 16132, Genoa, Italy
| | - Maria Menini
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Ospedale S. Martino, L. Rosanna Benzi 10, 16132, Genoa, Italy
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Tan T, Zhao Q, Kuwae H, Ueno T, Chen P, Tsutsumi Y, Mizuno J, Hanawa T, Wakabayashi N. Surface properties and biocompatibility of sandblasted and acid-etched titanium-zirconium binary alloys with various compositions. Dent Mater J 2021; 41:266-272. [PMID: 34866118 DOI: 10.4012/dmj.2021-210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Ti-Zr alloys have been investigated as an alternative to commercially pure Ti (c.p.Ti). According to our previous studies on the mechanical properties of Ti-Zr alloys, a Zr proportion in the range of 30-50 mol% has competitive advantages over Ti-10Zr and c.p.Ti. The aim of this study is to evaluate the biological response to Ti-Zr alloys with different compositions and their surface characteristics. Alloy surfaces are modified by sandblasting and sulfuric acid etching. As a result, similar surface structures are observed for c.p.Ti, Ti-10Zr, and Ti-30Zr, whereas Ti-50Zr does not form a micro-rough structure by the same treatment process. No significant difference is found in the viability of cells on c.p.Ti, Ti-10Zr, and Ti-30Zr, whereas lower cell attachment levels are detected on Ti-50Zr. In summary, Ti-30Zr reliably forms a micro-rough structure, which provides one evidence for its application in a new dental implant material.
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Affiliation(s)
- Tianbo Tan
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Qian Zhao
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Hiroyuki Kuwae
- Research Organization for Nano and Life Innovation, Waseda University
| | - Takeshi Ueno
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Peng Chen
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Yusuke Tsutsumi
- Research Center for Structural Materials, National Institute for Materials Science
| | - Jun Mizuno
- Research Organization for Nano and Life Innovation, Waseda University
| | - Takao Hanawa
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Noriyuki Wakabayashi
- Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Hultin K, Eriksson A, Backe C, Johansson U, Bougas K. A Pilot Study with Randomised Controlled Design Comparing TiZr Alloy Dental Implants to Ti Implants. EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2020; 11:e3. [PMID: 33598111 PMCID: PMC7875101 DOI: 10.5037/jomr.2020.11403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 12/28/2020] [Indexed: 11/16/2022]
Abstract
Objectives Evidence on the clinical performance of recently introduced dental implants in titanium-zirconium alloy is sparse. The aim of the present pilot study with randomized controlled design is to compare changes in supporting structures around dental titanium-zirconium alloy implants to commercially pure titanium implants. Material and Methods The present material includes consecutive patients referred to a specialist clinic in Sweden. Two patient groups treated with dental implants in two different materials - titanium (Ti) and titanium-zirconium (TiZr) - were defined after block randomisation for smoking. In total, 40 implants installed in 21 patients were available for one-year follow-up. Marginal bone level, soft tissue height and width of keratinised mucosa were registered at baseline and at one-year follow-up. Results At implant level, the test group (TiZr) yielded significant marginal bone loss (P < 0.001) after one year. Additionally, marginal bone loss after one year was significantly higher for TiZr implants (P < 0.001) as compared to traditional Ti implants. Soft tissue dimensions were stable throughout the evaluation time for both implant materials. Conclusions One-year results indicate more pronounced initial marginal bone loss for dental implants in titanium-zirconium alloy as compared to implants made of commercially pure titanium.
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Affiliation(s)
- Kristina Hultin
- Department of Prosthodontics, Södra Älvsborg Hospital, BoråsSweden
| | - Annelie Eriksson
- Department of Oral and Maxillofacial Surgery, Södra Älvsborg Hospital, BoråsSweden
| | - Christina Backe
- Department of Oral and Maxillofacial Surgery, Södra Älvsborg Hospital, BoråsSweden
| | - Ulf Johansson
- Department of Oral and Maxillofacial Surgery, Södra Älvsborg Hospital, BoråsSweden
| | - Kostas Bougas
- Department of Periodontology, Södra Älvsborg Hospital, BoråsSweden
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Jiang J, Zhou C, Zhao Y, He F, Wang X. Development and properties of dental Ti-Zr binary alloys. J Mech Behav Biomed Mater 2020; 112:104048. [PMID: 32920276 DOI: 10.1016/j.jmbbm.2020.104048] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 11/15/2022]
Abstract
In this study, two medium Zr-containing Ti-based alloys with commercially pure titanium as control were systematically investigated to assess their potential biomedical application. After samples subjected to TMP and CR, it was found that the Zr addition significantly affected the microstructure, phase constitutions, mechanical properties and cytocompatibility. The microstructural results showed that increasing Zr concentrations resulted in more refined grains. Furthermore, Zr changed the phase constitution: CR Ti-20Zr was formed by the single α-phase while CR Ti-30Zr alloy was formed by the coexistence of α and deformation-induced FCC phases. The P-type FCC phase was dominant and more prone to occur than the B-type one. The mechanical tests demonstrated that the increasing Zr content led to a simultaneous increase in micro-hardness, strength and plasticity of CR samples due to the combined effects of solution strengthening, work hardening and the FCC phase. The SEM fractography indicated that the brittle fracture of CR Ti-20Zr due to deformation twins and ductile fracture of CR Ti-30Zr because of FCC phase. Furthermore, Ti-Zr alloys presented comparable cytocompatibility to the CP-Ti control based on cell viability, proliferation and intracellular O2- content of MSCs. Specifically, alkaline phosphatase activity in BMSCs were significantly higher for grain refined CR Ti-30Zr. Considering all these results, CR Ti-30Zr alloy exhibited the optimal comprehensive performance to be potential dental materials.
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Affiliation(s)
- Jie Jiang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Chuan Zhou
- Department of Prosthodontics, The Affiliated Stomatology Hospital, School of Medicine, Zhejiang University, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310006, Zhejiang, China
| | - Yanwei Zhao
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Fuming He
- Department of Prosthodontics, The Affiliated Stomatology Hospital, School of Medicine, Zhejiang University, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310006, Zhejiang, China.
| | - Xiaoxiang Wang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
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Barker E, AlQobaly L, Shaikh Z, Franklin K, Moharamzadeh K. Implant Soft-Tissue Attachment Using 3D Oral Mucosal Models-A Pilot Study. Dent J (Basel) 2020; 8:E72. [PMID: 32645887 PMCID: PMC7558259 DOI: 10.3390/dj8030072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/23/2020] [Accepted: 07/03/2020] [Indexed: 01/25/2023] Open
Abstract
PURPOSE The aim of this study was to investigate soft-tissue attachment to different metal, ceramic, and polymer implant surfaces using an inflamed, three-dimensional (3D), tissue-engineered, human oral mucosal model, as well as multiple-endpoint qualitative and quantitative biological approaches. METHODS Normal human oral fibroblasts, OKF6/TERT-2 keratinocytes and THP-1 monocytes were cultured, and full-thickness, 3D oral mucosal models were engineered inside tissue culture inserts. Sand-blasted and acid-etched (SLA) and machined (M) titanium-zirconium alloy (TiZr; commercially known as Roxolid; Institut Straumann AG, Switzerland), ceramic (ZrO2), and polyether ether ketone (PEEK) rods (Ø 4 mm × 8 mm) were inserted into the center of tissue-engineered oral mucosa following a Ø 4mm punch biopsy. Inflammation was simulated with addition of the lipopolysaccharide (LPS) of Escherichia coli (E. coli) and tumor necrosis factor (TNF)-alpha to the culture medium. Implant soft-tissue attachment was assessed using histology, an implant pull-test with PrestoBlue assay, and scanning electron microscopy (SEM). RESULTS Inflamed, full-thickness, 3D human oral mucosal models with inserted implants were successfully engineered and histologically characterized. The implant pull-test with PrestoBlue assay showed higher viability of the tissue that remained attached to the TiZr-SLA surface compared to the other test groups. This difference was statistically significant (p < 0.05). SEM analysis showed evidence of epithelial cell attachment on different implant surfaces. CONCLUSIONS The inflamed, 3D, oral mucosal model has the potential to be used as a suitable in vitro test system for visualization and quantification of implant soft-tissue attachment. The results of our study indicate greater soft tissue attachment to TiZr-SLA compared to TiZr-M, ceramic, and PEEK surfaces.
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Affiliation(s)
| | | | | | | | - Keyvan Moharamzadeh
- School of Clinical Dentistry, University of Sheffield, Western Bank, Sheffield S10 2TN, UK; (E.B.); (L.A.); (Z.S.); (K.F.)
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Knaus J, Schaffarczyk D, Cölfen H. On the Future Design of Bio-Inspired Polyetheretherketone Dental Implants. Macromol Biosci 2019; 20:e1900239. [PMID: 31802617 DOI: 10.1002/mabi.201900239] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 10/10/2019] [Indexed: 11/09/2022]
Abstract
Polyetheretherketone (PEEK) is a promising implant material because of its excellent mechanical characteristics. Although this polymer is a standard material in spinal applications, PEEK is not in use in the manufacturing of dental implants, where titanium is still the most-used material. This may be caused by its relative bio-inertness. By the use of various surface modification techniques, efforts have been made to enhance its osseointegrative characteristics to enable the polymer to be used in dentistry. In this feature paper, the state-of-the-art for dental implants is given and different surface modification techniques of PEEK are discussed. The focus will lie on a covalently attached surface layer mimicking natural bone. The usage of such covalently anchored biomimetic composite materials combines many advantageous properties: A biocompatible organic matrix and a mineral component provide the cells with a surrounding close to natural bone. Bone-related cells may not recognize the implant as a foreign body and therefore, may heal and integrate faster and more firmly. Because neither metal-based nor ceramics are ideal material candidates for a dental implant, the combination of PEEK and a covalently anchored mineralized biopolymer layer may be the start of the desired evolution in dental surgery.
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Affiliation(s)
- Jennifer Knaus
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.,stimOS GmbH, Byk-Gulden-Straße 2, 78467, Konstanz, Germany
| | | | - Helmut Cölfen
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
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Siddiqui DA, Jacob JJ, Fidai AB, Rodrigues DC. Biological characterization of surface-treated dental implant materials in contact with mammalian host and bacterial cells: titanium versus zirconia. RSC Adv 2019; 9:32097-32109. [PMID: 35530755 PMCID: PMC9072875 DOI: 10.1039/c9ra06010c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/29/2019] [Indexed: 01/02/2023] Open
Abstract
Early-colonizing oral bacterial adhesion and mammal cell proliferation were similar on surface-treated titanium and zirconia.
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Affiliation(s)
- Danyal A. Siddiqui
- Department of Bioengineering
- The University of Texas at Dallas
- Richardson
- USA 75080
| | - Joel J. Jacob
- Department of Biological Sciences
- The University of Texas at Dallas
- Richardson
- USA 75080
| | - Alikhan B. Fidai
- Department of Bioengineering
- The University of Texas at Dallas
- Richardson
- USA 75080
| | - Danieli C. Rodrigues
- Department of Bioengineering
- The University of Texas at Dallas
- Richardson
- USA 75080
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10
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Zhang Y, Davenport AJ, Burke B, Vyas N, Addison O. Effect of Zr Addition on the Corrosion of Ti in Acidic and Reactive Oxygen Species (ROS)-Containing Environments. ACS Biomater Sci Eng 2018; 4:1103-1111. [DOI: 10.1021/acsbiomaterials.7b00882] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yue Zhang
- School of Metallurgy and Materials, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Alison J. Davenport
- School of Metallurgy and Materials, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Bernard Burke
- Biomaterials Unit, School of Dentistry, University of Birmingham, Birmingham B5 7EG, United Kingdom
- Faculty of Health & Life Sciences, Coventry University, Coventry CV1 5LW, United Kingdom
| | - Nina Vyas
- Biomaterials Unit, School of Dentistry, University of Birmingham, Birmingham B5 7EG, United Kingdom
| | - Owen Addison
- Biomaterials Unit, School of Dentistry, University of Birmingham, Birmingham B5 7EG, United Kingdom
- School of Dentistry, University of Alberta, Edmonton T6G 1C9, Canada
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Iegami CM, Uehara PN, Sesma N, Pannuti CM, Tortamano Neto P, Mukai MK. Survival rate of titanium-zirconium narrow diameter dental implants versus commercially pure titanium narrow diameter dental implants: A systematic review. Clin Implant Dent Relat Res 2017; 19:1015-1022. [DOI: 10.1111/cid.12527] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Carolina Mayumi Iegami
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | | | - Newton Sesma
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | | | - Pedro Tortamano Neto
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | - Márcio Katsuyoshi Mukai
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
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12
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Akimoto T, Ueno T, Tsutsumi Y, Doi H, Hanawa T, Wakabayashi N. Evaluation of corrosion resistance of implant-use Ti-Zr binary alloys with a range of compositions. J Biomed Mater Res B Appl Biomater 2016; 106:73-79. [PMID: 27860159 DOI: 10.1002/jbm.b.33811] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 10/05/2016] [Accepted: 10/27/2016] [Indexed: 11/12/2022]
Abstract
Although titanium-zirconium (Ti-Zr) alloy has been adopted for clinical applications, the ideal proportion of Zr in the alloy has not been identified. In this study, we investigated the biocompatibility of Ti-Zr alloy by evaluating its corrosion resistance to better understand whether there is an optimal range or value of Zr proportion in the alloy. We prepared pure Ti, Ti-30Zr, Ti-50Zr, Ti-70Zr, and pure Zr (mol% of Zr) samples and subjected them to anodic polarization and immersion tests in a lactic acid + sodium chloride (NaCl) solution and artificial saliva. We observed pitting corrosion in the Ti-70Zr and Zr after exposure to both solutions. After the immersion test, we found that pure Ti exhibited the greatest degree of dissolution in the lactic acid + NaCl solution, with the addition of Zr dramatically reducing Ti ion dissolution, with the reduction ultimately exceeding 90% in the case of the Ti-30Zr. Hence, although the localized corrosion resistance under severe conditions was compromised when the Zr content was more than 70%, metal ion release reduced owing to Zr addition and the corresponding formation of a stable passive layer. The results suggest that Ti-30Zr or a Zr proportion of less than 50% would offer an ideal level of corrosion resistance for clinical applications. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 73-79, 2018.
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Affiliation(s)
- Teisuke Akimoto
- Removable Partial Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Takeshi Ueno
- Removable Partial Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yusuke Tsutsumi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan.,Graduate School of Engineering, The University of Tokyo, Bunyko, Tokyo, 113-8656, Japan
| | - Hisashi Doi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Takao Hanawa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Noriyuki Wakabayashi
- Removable Partial Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
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13
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Medvedev AE, Molotnikov A, Lapovok R, Zeller R, Berner S, Habersetzer P, Dalla Torre F. Microstructure and mechanical properties of Ti–15Zr alloy used as dental implant material. J Mech Behav Biomed Mater 2016; 62:384-398. [DOI: 10.1016/j.jmbbm.2016.05.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 05/02/2016] [Accepted: 05/04/2016] [Indexed: 02/01/2023]
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14
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Marković A, Đinić A, Calvo Guirado JL, Tahmaseb A, Šćepanović M, Janjić B. Randomized clinical study of the peri-implant healing to hydrophilic and hydrophobic implant surfaces in patients receiving anticoagulants. Clin Oral Implants Res 2016; 28:1241-1247. [DOI: 10.1111/clr.12948] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Aleksa Marković
- Department of Oral Surgery; School of Dental Medicine; University of Belgrade; Belgrade Serbia
| | - Ana Đinić
- Department of Oral Surgery; School of Dental Medicine; University of Belgrade; Belgrade Serbia
| | - José Luis Calvo Guirado
- Department of Research; International Dentistry Research Cathedra; UCAM Universidad Catolica San Antonio de Murcia; Murcia Spain
| | - Ali Tahmaseb
- Department of Oral Implantology and Prosthetic Dentistry; Academic Center for Dentistry Amsterdam (ACTA); Move Research Institute; Amsterdam The Netherlands
| | - Miodrag Šćepanović
- Department of Prosthodontics; School of Dental Medicine; University of Belgrade; Belgrade Serbia
| | - Bojan Janjić
- Department of Oral Surgery; School of Dental Medicine; University of Belgrade; Belgrade Serbia
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15
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Galli S, Jimbo R, Naito Y, Berner S, Dard M, Wennerberg A. Chemically modified titanium-zirconium implants in comparison with commercially pure titanium controls stimulate the early molecular pathways of bone healing. Clin Oral Implants Res 2016; 28:1234-1240. [DOI: 10.1111/clr.12947] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Silvia Galli
- Department of Prosthodontics; Faculty of Odontology; Malmö University; Malmö Sweden
| | - Ryo Jimbo
- Department of Prosthodontics; Faculty of Odontology; Malmö University; Malmö Sweden
- Department of Oral and Maxillofacial Surgery and Oral Medicine; Faculty of Odontology; Malmö University; Malmö Sweden
| | - Yoshihito Naito
- Oral Implant Center; Tokushima University Hospital; Tokushima Japan
| | | | - Michel Dard
- Institut Straumann AG; Basel Switzerland
- College of Dentistry; New York University; New York NY USA
| | - Ann Wennerberg
- Department of Prosthodontics; Faculty of Odontology; Malmö University; Malmö Sweden
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16
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Altuna P, Lucas-Taulé E, Gargallo-Albiol J, Figueras-Álvarez O, Hernández-Alfaro F, Nart J. Clinical evidence on titanium–zirconium dental implants: a systematic review and meta-analysis. Int J Oral Maxillofac Surg 2016; 45:842-50. [DOI: 10.1016/j.ijom.2016.01.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 10/21/2015] [Accepted: 01/11/2016] [Indexed: 11/15/2022]
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17
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Lotz EM, Olivares-Navarrete R, Hyzy SL, Berner S, Schwartz Z, Boyan BD. Comparable responses of osteoblast lineage cells to microstructured hydrophilic titanium-zirconium and microstructured hydrophilic titanium. Clin Oral Implants Res 2016; 28:e51-e59. [DOI: 10.1111/clr.12855] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2016] [Indexed: 01/15/2023]
Affiliation(s)
- Ethan M. Lotz
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond VA USA
| | - Rene Olivares-Navarrete
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond VA USA
| | - Sharon L. Hyzy
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond VA USA
| | | | - Zvi Schwartz
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond VA USA
- Department of Periodontics; University of Texas Health Science Center at San Antonio; San Antonio TX USA
| | - Barbara D. Boyan
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond VA USA
- Wallace H. Coulter Department of Biomedical Engineering; Georgia Institute of Technology; Atlanta GA USA
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18
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Wen B, Chen J, Dard M, Cai Z. The Performance of Titanium-Zirconium Implants in the Elderly: A Biomechanical Comparative Study in the Minipig. Clin Implant Dent Relat Res 2016; 18:1200-1209. [PMID: 26834004 DOI: 10.1111/cid.12389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 12/03/2015] [Indexed: 12/24/2022]
Affiliation(s)
- Bo Wen
- Professor, Division of Implant Dentistry, Department of Oral & Maxillofacial Surgery, Nanjing Stomatology Hospital; Medical School of Nanjing University; Nanjing China
| | - Jiang Chen
- professor, Department of Implant Dentistry, School and Hospital of Stomatology; Fujian Medical University; Fuzhou China
| | - Michel Dard
- head and director, Preclinical Research; Institut Straumann AG; Basel Switzerland
- professor, Department of Periodontology and Implant Dentistry; College of Dentistry, New York University; New York NY USA
| | - Zhiyu Cai
- professor, Department of Implant Dentistry, School and Hospital of Stomatology; Fujian Medical University; Fuzhou China
- associate professor, Department of Stomatology; Fujian Medical University Union Hospital; Fuzhou China
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19
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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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20
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Nunome S, Kanetaka H, Kudo TA, Endoh K, Hosoda H, Igarashi K. In vitro evaluation of biocompatibility of Ti-Mo-Sn-Zr superelastic alloy. J Biomater Appl 2015; 30:119-30. [PMID: 25659946 DOI: 10.1177/0885328215569892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Shape memory alloys (SMAs) including superelastic alloys have unique properties such as shape memory and superelasticity, thus they are recognized as very useful biomaterials. These properties are very advantageous for medical use, and actually the SMA wires have been widely used in medical field. However, biocompatibility of nickel-titanium (Ni-Ti) alloy, which is the only practical SMA at present, has been questioned because of its high nickel content. The aim of this study was to evaluate the biocompatibility of a newly developed Ni-free Ti-based SMA for medical use. The newly developed SMA made of Ti-Mo-Sn-Zr system was processed into a disk of 15.1 mm in diameter. Pure titanium of the same shape was prepared as control. All the disk surfaces were polished using emery papers, #120, #400, and #600. Scanning electron microscopy and a 3D optics profiler were used to evaluate the surface of the materials. In vitro evaluations included colony examination for evaluation of the cell cytotoxicity, DNA quantification for the cell proliferation, Alamar blue assay for metabolic activity, FDA staining for the live cell imaging, and cell cycle analysis, using Chinese hamster fibroblastic V-79 cells and mouse osteoblastic MC3T3-E1 cells. In colony examination and DNA quantification, there was no significant difference between the Ti-Mo-Sn-Zr and the pure titanium. In FDA staining, cultured cells on the Ti-Mo-Sn-Zr alloy showed the same biocompatibility as those on the pure titanium. The present results suggest that the newly developed Ti-Mo-Sn-Zr alloy showed the high biocompatibility comparable to pure titanium and can be used as efficient biomaterial for medical use.
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Affiliation(s)
- Shoko Nunome
- Division of Oral Dysfunction Science, Graduate School of Density, Tohoku University, Sendai, Japan
| | - Hiroyasu Kanetaka
- Liaison Center for Innovative Dentistry, Graduate School of Density, Tohoku University, Sendai, Japan Division Biomedical Engineering for Diagnosis and Treatment, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Tada-aki Kudo
- Division of Oral Physiology, Graduate School of Density, Tohoku University, Sendai, Japan
| | - Kazuki Endoh
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, Yokohama, Japan
| | - Hideki Hosoda
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, Yokohama, Japan
| | - Kaoru Igarashi
- Division of Oral Dysfunction Science, Graduate School of Density, Tohoku University, Sendai, Japan
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21
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Kopf BS, Ruch S, Berner S, Spencer ND, Maniura-Weber K. The role of nanostructures and hydrophilicity in osseointegration:In-vitroprotein-adsorption and blood-interaction studies. J Biomed Mater Res A 2015; 103:2661-72. [DOI: 10.1002/jbm.a.35401] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/11/2014] [Accepted: 01/20/2015] [Indexed: 01/15/2023]
Affiliation(s)
- Brigitte S. Kopf
- Department Materials meet Life; Laboratory for Materials Biology Interactions, Empa, Swiss Federal Laboratories for Materials Science and Technology; St. Gallen Switzerland
| | - Sylvie Ruch
- Institut Straumann AG; Basel Switzerland
- Department of Materials; Laboratory for Surface Science and Technology; ETH Zurich Switzerland
| | | | - Nicholas D. Spencer
- Department of Materials; Laboratory for Surface Science and Technology; ETH Zurich Switzerland
| | - Katharina Maniura-Weber
- Department Materials meet Life; Laboratory for Materials Biology Interactions, Empa, Swiss Federal Laboratories for Materials Science and Technology; St. Gallen Switzerland
- Department Materials meet Life; Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology; St. Gallen Switzerland
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22
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Wang LN, Huang XQ, Shinbine A, Luo JL. Influence of albumin on the electrochemical behaviour of Zr in phosphate buffered saline solutions. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013. [PMID: 23180000 DOI: 10.1007/s10856-012-4816-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The corrosion behaviour of Zr in phosphate buffered saline (PBS) solutions with various concentrations (0-4 g L(-1)) of albumin was studied by electrochemical techniques and surface analysis. Addition of albumin to PBS solutions moved the open circuit potential (OCP) to less nobler direction. OCP, polarization resistance and impedance increased and the corrosion current decreased over immersion duration. At early stages of immersion, the resistance was increased with the concentration of albumin because of the high adsorption kinetics of albumin on metal. After the long term immersion, the resistance in PBS without albumin was higher than PBS with albumin owing to the anodic dissolution effect of albumin on metal. According to the analysis of effective capacitances, a normal distribution of time-constants was proposed to estimate the surface film on Zr. A corrosion mechanism of Zr in PBS with different albumin was proposed based on electrochemical analysis.
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Affiliation(s)
- Lu-Ning Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada.
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23
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Challa VSA, Mali S, Misra RDK. Reduced toxicity and superior cellular response of preosteoblasts to Ti-6Al-7Nb alloy and comparison with Ti-6Al-4V. J Biomed Mater Res A 2013; 101:2083-9. [PMID: 23349101 DOI: 10.1002/jbm.a.34492] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 10/09/2012] [Accepted: 10/25/2012] [Indexed: 11/11/2022]
Abstract
There are serious concerns on the toxicity of vanadium in Ti-6Al-4V alloy. In this regard, we describe the biological footprint of Ti-6Al-4V and compare with a viable alternate Ti-6Al-7Nb alloy, in terms of novel experimentation pertaining to cellular activity that include qualitative and quantitative analysis of Feret's diameter of cells, area, and perimeter, and proteins-actin, vinculin, and fibronectin. Interestingly, Ti-6Al-7Nb was characterized by superior cell attachment, proliferation, viability, morphology, and spread, which were significantly different from Ti-6Al-4V alloy. Additionally, immunofluorescence studies demonstrated stronger vinculin signals associated with actin stress fibers in the outer regions of the cells and cellular extensions in Ti-6Al-7Nb alloy. These striking observations suggest enhanced cell-substrate interaction and activity on the surface of niobium-containing titanium alloy. The significant differences in the cellular response between the two alloys clearly point to the determining role of alloying element (Nb versus V) in a conclusive manner. Based on this study, next generation of titanium alloys is proposed to focus on niobium-containing alloy.
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Affiliation(s)
- V S A Challa
- Biomaterials and Biomedical Engineering Research Laboratory, Center for Structural and Functional Materials, University of Louisiana at Lafayette, P.O. Box 44130, Lafayette, Louisiana 70504, USA
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Abstract
Dental implants made from binary titanium-zirconium (TiZr) alloys have shown promise as a high strength, yet biocompatible alternative to pure titanium, particularly for applications requiring small diameter implants. The aim of this review is to summarize existing literature reporting on the use of binary TiZr alloys for endosseous dental implant applications as tested in vitro, in animals and clinically. And furthermore to show that TiZr is “at least as good as” pure titanium in terms of biocompatibility and osseointergration. From the twelve papers that met the inclusion criteria, the current literature confirms that TiZr alloys produce small diameter implants with a strength up to 40% higher than conventional, cold-worked, grade IV titanium implants, and with a corrosion resistance and biocompatibility that is at least as good as pure titanium. The surface structure of TiZr is compatible with established surface treatments proven to aid in the osseointegration of titanium implants. Furthermore, binary TiZr alloys have been shown to achieve good osseointegration and high success rates both in animal and in clinical studies.
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