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Pradhan L, Hazra S, Manna S, Pal BN, Mukherjee S. Screening of Lithium Substituted Ag-TiO 2 Nanoparticle Coating for Antibiofilm Application. ACS APPLIED BIO MATERIALS 2024; 7:6101-6113. [PMID: 39121349 DOI: 10.1021/acsabm.4c00711] [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] [Indexed: 08/11/2024]
Abstract
Bacterial infections and biofilm growth are common mishaps associated with medical devices, and they contribute significantly to ill health and mortality. Removal of bacterial deposition from these devices is a major challenge, resulting in an immediate necessity for developing antibacterial coatings on the surfaces of medical implants. In this context, we developed an innovative coating strategy that can operate at low temperatures (80 °C) and preserve the devices' integrity and functionality. An innovative Ag-TiO2 based coating was developed by ion exchange between silver nitrate (AgNO3) and lithium titanate (Li4Ti5O12) on glass substrates for different periods, ranging from 10 to 60 min. The differently coated samples were tested for their antibacterial and antibiofilm efficacy.
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Affiliation(s)
- Lipi Pradhan
- School of Biomedical Engineering, IIT (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Sobhan Hazra
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Sumit Manna
- School of Biomedical Engineering, IIT (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Bhola Nath Pal
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Sudip Mukherjee
- School of Biomedical Engineering, IIT (BHU), Varanasi 221005, Uttar Pradesh, India
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Kunrath MF, Farina G, Sturmer LBS, Teixeira ER. TiO 2 nanotubes as an antibacterial nanotextured surface for dental implants: Systematic review and meta-analysis. Dent Mater 2024; 40:907-920. [PMID: 38714394 DOI: 10.1016/j.dental.2024.04.009] [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: 10/13/2023] [Revised: 04/14/2024] [Accepted: 04/30/2024] [Indexed: 05/09/2024]
Abstract
OBJECTIVES Nanotechnology is constantly advancing in dental science, progressing several features aimed at improving dental implants. An alternative for surface treatment of dental implants is electrochemical anodization, which may generate a nanotubular surface (TiO2 nanotubes) with antibacterial potential and osteoinductive features. This systematic review and meta-analysis aims to elucidate the possible antibacterial properties of the surface in question compared to the untreated titanium surface. SOURCES For that purpose, was performed a systematic search on the bases PubMed, Lilacs, Embase, Web Of Science, Cinahl, and Cochrane Central, as well as, manual searches and gray literature. STUDY SELECTION The searches resulted in 742 articles, of which 156 followed for full-text reading. Then, 37 were included in the systematic review and 8 were included in meta-analysis. RESULTS Fifteen studies revealed significant antibacterial protection using TiO2 nanotube surfaces, while 15 studies found no statistical difference between control and nanotextured surfaces. Meta-analysis of in vitro studies demonstrated relevant bacterial reduction only for studies investigating Staphylococcus aureus in a period of 6 h. Meta-analysis of in vivo studies revealed three times lower bacterial adhesion and proliferation on TiO2 nanotube surfaces. CONCLUSIONS TiO2 nanotube topography as a surface for dental implants in preclinical research has demonstrated a positive relationship with antibacterial properties, nevertheless, factors such as anodization protocols, bacteria strains, and mono-culture methods should be taken into consideration, consequently, further studies are necessary to promote clinical translatability.
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Affiliation(s)
- Marcel F Kunrath
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Göteborg, Sweden; School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil; School of Technology, Post-Graduate Program in Materials Technology and Engineering, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Georgia Farina
- School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Luiza B S Sturmer
- School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Eduardo R Teixeira
- School of Health and Life Sciences, Post-Graduate Program in Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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Rücker VB, Balbinot GDS, Collares FM, de Araújo Neto VG, Giannini M, Leitune VCB. Synthesis of silver core-shell nanoparticles and their influence on an experimental resin endodontic sealer: An in vitro analysis. Int Endod J 2023; 56:289-303. [PMID: 36314859 DOI: 10.1111/iej.13859] [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: 08/10/2021] [Revised: 09/29/2022] [Accepted: 10/26/2022] [Indexed: 11/05/2022]
Abstract
AIM To avoid root canal recontamination and endodontic treatment failure, endodontic sealers with antibacterial activity could be an alternative. Silver nanoparticles have antibacterial activity and this study aimed to synthesize Ag@SiO2 nanoparticles, incorporate them into an experimental endodontic resin sealer and evaluate their influence on physicochemical and biological properties. METHODOLOGY Ag@SiO2 nanoparticles were produced using the sol-gel process, based on the Stöber method. The particles were characterized in terms of their chemical structure by Fourier transform-infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), UV-Vis spectral analysis, scanning electron microscopy, and transmission electron microscopy, where the particle morphology and diameter were analysed. A dual-cured experimental endodontic resin sealer was formulated using 70 wt% UDMA, 15 wt% GDMA, and 15 wt% BisEMA. The photoinitiators were added separately in two pastes. The Ag@SiO2 nanoparticles were incorporated into the endodontic sealer at the concentrations of 2.5 wt%, 5 wt%, and 10 wt%, and a control group without nanoparticles was also formulated. The endodontic sealers were evaluated for their flow, film thickness, degree of conversion, softening in solvent, radiopacity, cytotoxicity and antibacterial activity immediately and after 9 months in water storage. RESULTS Silver was detected in the chemical characterization of Ag@SiO2 that presented a spheric regular shape and average 683.51 nm ± 93.58 diameter. Sealers presented adequate flow and film thickness while radiopacity values were below the ones required by ISO 6876. All groups underwent softening after immersion in a solvent. The 10 wt% groups showed a higher loss of subsurface hardness (∆KHN%). No reduction in cell viability was observed. Enterococcus faecalis viability in biofilm was reduced in 10 wt% groups after 24 h and 9 months. CONCLUSION The addition of 10 wt% Ag@SiO2 reduced E. faecalis viability at immediate and longitudinal analysis while maintaining the physicochemical properties of developed sealers.
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Affiliation(s)
- Victória Britz Rücker
- Dental Materials Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Gabriela de Souza Balbinot
- Dental Materials Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Fabrício Mezzomo Collares
- Dental Materials Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Vitaliano Gomes de Araújo Neto
- Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas, Brazil
| | - Marcelo Giannini
- Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas, Brazil
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Polai B, Satpathy BK, Jena BK, Nayak SK. An Overview of Coating Processes on Metal Substrates Based on Graphene-Related Materials for Multifarious Applications. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Balaram Polai
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar−752050, India
| | - Bijoy Kumar Satpathy
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar−752050, India
| | - Bikash Kumar Jena
- CSIR−Institute of Minerals and Materials Technology Bhubaneswar−751013, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Saroj Kumar Nayak
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar−752050, India
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Preparation and in vivo bacteriostatic application of PPDO-coated Ag loading TiO 2 nanoparticles. Sci Rep 2022; 12:10585. [PMID: 35732700 PMCID: PMC9217793 DOI: 10.1038/s41598-022-14814-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 06/13/2022] [Indexed: 11/29/2022] Open
Abstract
Implant-associated infections limit the clinical application of implants therapy; hence, exploiting strategies to prevent biomaterial-associated infections has become important. Therefore, in this study, a series of poly (p-dioxanone) (PPDO)-coated Ag loading TiO2 nanoparticles (Ag@TiO2-PPDO) was synthesized to be applied as bacteriostatic coating materials that could be easily dispersed in organic solvent and coated onto implantable devices via temperate methods such as electrospraying. The lattice parameters of TiO2 were a = 0.504 nm, b = c = 1.05 nm, alpha = beta = gamma = 90 degree and the size of crystallite was about 13 nm, indicating that part of Ag has been embedded into crystal defects of TiO2. Both XRD and TEM determinations indicated the successful grating of PPDO on the surface of Ag@TiO2. Among Ag@TiO2 nanoparticles with various Ag loading quantities, 12% Ag@TiO2 nanoparticles exhibited relatively higher grafting efficiency and Ag contents on the surface of grafted composites. In addition, 12% Ag@TiO2-PPDO exhibited the best bacteriostatic effect in vitro owing to its higher grafted efficiency and relatively short length of PPDO segments. Subsequently, Ag@TiO2-PPDO was coated on the surface of a poly lactic-co-glycolic acid (PLGA) electrospun membrane via the electrospraying method. Finally, the in vivo bacteriostatic effect of 12% Ag@TiO2-PPDO coating was verified by implanting 12% Ag@TiO2-PPDO-coated PLGA membrane into a rat subcutaneously combined with an injection of Staphylococcus aureus at implanting sites.
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Hosseinpour S, Nanda A, Walsh LJ, Xu C. Microbial Decontamination and Antibacterial Activity of Nanostructured Titanium Dental Implants: A Narrative Review. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2336. [PMID: 34578650 PMCID: PMC8471155 DOI: 10.3390/nano11092336] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/02/2021] [Accepted: 09/05/2021] [Indexed: 12/12/2022]
Abstract
Peri-implantitis is the major cause of the failure of dental implants. Since dental implants have become one of the main therapies for teeth loss, the number of patients with peri-implant diseases has been rising. Like the periodontal diseases that affect the supporting tissues of the teeth, peri-implant diseases are also associated with the formation of dental plaque biofilm, and resulting inflammation and destruction of the gingival tissues and bone. Treatments for peri-implantitis are focused on reducing the bacterial load in the pocket around the implant, and in decontaminating surfaces once bacteria have been detached. Recently, nanoengineered titanium dental implants have been introduced to improve osteointegration and provide an osteoconductive surface; however, the increased surface roughness raises issues of biofilm formation and more challenging decontamination of the implant surface. This paper reviews treatment modalities that are carried out to eliminate bacterial biofilms and slow their regrowth in terms of their advantages and disadvantages when used on titanium dental implant surfaces with nanoscale features. Such decontamination methods include physical debridement, chemo-mechanical treatments, laser ablation and photodynamic therapy, and electrochemical processes. There is a consensus that the efficient removal of the biofilm supplemented by chemical debridement and full access to the pocket is essential for treating peri-implantitis in clinical settings. Moreover, there is the potential to create ideal nano-modified titanium implants which exert antimicrobial actions and inhibit biofilm formation. Methods to achieve this include structural and surface changes via chemical and physical processes that alter the surface morphology and confer antibacterial properties. These have shown promise in preclinical investigations.
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Affiliation(s)
| | | | - Laurence J. Walsh
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia; (S.H.); (A.N.)
| | - Chun Xu
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia; (S.H.); (A.N.)
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Nycz M, Arkusz K, Pijanowska DG. Electrodes Based on a Titanium Dioxide Nanotube-Spherical Silver Nanoparticle Composite for Sensing of Proteins. ACS Biomater Sci Eng 2021; 7:105-113. [PMID: 33378150 DOI: 10.1021/acsbiomaterials.0c01207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of the research was to provide electrochemical, chemical, phase, and microscopic characteristics of electrodes based on titanium dioxide nanotubes (TNTs) containing uniformly deposited, nonagglomerated spherical silver nanoparticles (AgNPs). The nanoparticles were produced with the use of electrodeposition and sputter deposition methods. This paper presents the results of research of these platforms with the use of the following techniques: electrochemical impedance spectroscopy, X-ray diffraction analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy. Evaluation of the adsorption of proteins-bovine serum albumin (BSA)-was carried out to establish the possibility of the use of the electrodes in a low-cost, simple detection system without surface functionalization. The research proved that the AgNP deposition facilitated the electron transfer increasing their conductivity properties as well as promoting the protein adsorption. The AgNPs/TNT electrodes showed a high selectivity to the BSA-anti-BSA complex. Half an hour of immobilization was enough to completely saturate the TNT electrodes, whereas for AgNPs/TNTs, 1 h of immobilization seemed to be not enough. The impedance parameter changes for electrodes with the AgNPs reached even about 300%. The biggest changes were noted for the platform obtained using cyclic voltammetry, so it is the best detection platform for biosensing.
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Affiliation(s)
- Marta Nycz
- Department of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Gora, Prof. Z. Szafrana 4, Zielona Gora 65-516, Poland
| | - Katarzyna Arkusz
- Department of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Gora, Prof. Z. Szafrana 4, Zielona Gora 65-516, Poland
| | - Dorota Genowefa Pijanowska
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Ks. Trojdena 4, Warszawa 02-109, Poland
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Ion R, Necula MG, Mazare A, Mitran V, Neacsu P, Schmuki P, Cimpean A. Drug Delivery Systems Based on Titania Nanotubes and Active Agents for Enhanced Osseointegration of Bone Implants. Curr Med Chem 2020; 27:854-902. [PMID: 31362646 DOI: 10.2174/0929867326666190726123229] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 01/16/2019] [Accepted: 05/04/2019] [Indexed: 12/31/2022]
Abstract
TiO2 nanotubes (TNTs) are attractive nanostructures for localized drug delivery. Owing to their excellent biocompatibility and physicochemical properties, numerous functionalizations of TNTs have been attempted for their use as therapeutic agent delivery platforms. In this review, we discuss the current advances in the applications of TNT-based delivery systems with an emphasis on the various functionalizations of TNTs for enhancing osteogenesis at the bone-implant interface and for preventing implant-related infection. Innovation of therapies for enhancing osteogenesis still represents a critical challenge in regeneration of bone defects. The overall concept focuses on the use of osteoconductive materials in combination with the use of osteoinductive or osteopromotive factors. In this context, we highlight the strategies for improving the functionality of TNTs, using five classes of bioactive agents: growth factors (GFs), statins, plant derived molecules, inorganic therapeutic ions/nanoparticles (NPs) and antimicrobial compounds.
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Affiliation(s)
- Raluca Ion
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Madalina Georgiana Necula
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Anca Mazare
- University of Erlangen-Nuremberg, Department of Materials Science, Erlangen, Germany
| | - Valentina Mitran
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Patricia Neacsu
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Patrik Schmuki
- University of Erlangen-Nuremberg, Department of Materials Science, Erlangen, Germany
| | - Anisoara Cimpean
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest, Romania
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Bilek O, Fialova T, Otahal A, Adam V, Smerkova K, Fohlerova Z. Antibacterial activity of AgNPs–TiO 2 nanotubes: influence of different nanoparticle stabilizers. RSC Adv 2020; 10:44601-44610. [PMID: 35517148 PMCID: PMC9058477 DOI: 10.1039/d0ra07305a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/01/2020] [Indexed: 01/22/2023] Open
Abstract
Enhanced antibacterial properties of nanomaterials such as TiO2 nanotubes (TNTs) and silver nanoparticles (AgNPs) have attracted much attention in biomedicine and industry. The antibacterial properties of nanoparticles depend, among others, on the functionalization layer of the nanoparticles. However, the more complex information about the influence of different functionalization layers on antibacterial properties of nanoparticle decorated surfaces is still missing. Here we show the array of ∼50 nm diameter TNTs decorated with ∼50 nm AgNPs having different functionalization layers such as polyvinylpyrrolidone, branched polyethyleneimine, citrate, lipoic acid, and polyethylene glycol. To assess the antibacterial properties, the viability of Gram-positive (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa) has been assessed. Our results showed that the functional layer of nanoparticles plays an important role in antibacterial properties and the synergistic effect such nanoparticles and TiO2 nanotubes have had different effects on adhesion and viability of G− and G+ bacteria. These findings could help researchers to optimally design any surfaces to be used as an antibacterial including the implantable titanium biomaterials. Synergictic antibacterial effect of AgNPs–TiO2 nanotubes is influenced by different nanoparticle stabilizers.![]()
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Affiliation(s)
- Ondrej Bilek
- Central European Institute of Technology
- Brno University of Technology
- Brno
- Czech Republic
| | - Tatiana Fialova
- Department of Chemistry and Biochemistry
- Mendel University in Brno
- Brno
- Czech Republic
| | - Alexandr Otahal
- Department of Microelectronics
- Brno University of Technology
- Brno
- Czech Republic
| | - Vojtech Adam
- Central European Institute of Technology
- Brno University of Technology
- Brno
- Czech Republic
- Department of Chemistry and Biochemistry
| | - Kristyna Smerkova
- Central European Institute of Technology
- Brno University of Technology
- Brno
- Czech Republic
- Department of Chemistry and Biochemistry
| | - Zdenka Fohlerova
- Central European Institute of Technology
- Brno University of Technology
- Brno
- Czech Republic
- Department of Microelectronics
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Nycz M, Arkusz K, Pijanowska DG. Influence of the Silver Nanoparticles (AgNPs) Formation Conditions onto Titanium Dioxide (TiO 2) Nanotubes Based Electrodes on Their Impedimetric Response. NANOMATERIALS 2019; 9:nano9081072. [PMID: 31349734 PMCID: PMC6723281 DOI: 10.3390/nano9081072] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/17/2019] [Accepted: 07/24/2019] [Indexed: 01/19/2023]
Abstract
This paper presents the comparison of the effects of three methods of production of silver spherical and near-spherical nanoparticles (AgNPs) on the titanium dioxide nanotubes (TNT) base: cyclic voltammetry, chronoamperometry, and sputter deposition. It also evaluates the influence of silver nanoparticles on the electrochemical properties of the developed electrodes. The novelty of this research was to fabricate regular AgNPs free of agglomerates uniformly distributed onto the TNT layer, which has not been accomplished with previous attempts. The applied methods do not require stabilizing and reducing reagents. The extensive electrochemical characteristic of AgNP/TNT was performed by open circuit potential and electrochemical impedance spectroscopy methods. For AgNPs/TNT obtained by each method, the impedance module of these electrodes was up to 50% lower when compared to TNT, which means that AgNPs enabled more efficient electron transfer due to the effective area increase. In addition, the presence of nanoparticles increases the corrosion resistance of the prepared electrodes. These substrates can be used as electrochemical sensors due to their high electrical conductivity, and also as implants due to the antibacterial properties of both the TNT and AgNPs.
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Affiliation(s)
- Marta Nycz
- Department of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Góra, Prof. Z. Szafrana 4, 54-516 Zielona Góra, Poland.
| | - Katarzyna Arkusz
- Department of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Góra, Prof. Z. Szafrana 4, 54-516 Zielona Góra, Poland
| | - Dorota Genowefa Pijanowska
- Nałęcz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warszawa, Poland
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Roguska A, Belcarz A, Zalewska J, Hołdyński M, Andrzejczuk M, Pisarek M, Ginalska G. Metal TiO 2 Nanotube Layers for the Treatment of Dental Implant Infections. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17089-17099. [PMID: 29718650 DOI: 10.1021/acsami.8b04045] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Titanium oxide nanotube layers with silver and zinc nanoparticles are attracting increasing attention in the design of bone and dental implants due to their antimicrobial potential and their ability to control host cell adhesion, growth, and differentiation. However, recent reports indicate that the etiology of dental infections is more complex than has been previously considered. Therefore, the antimicrobial potential of dental implants should be evaluated against at least several different microorganisms cooperating in human mouth colonization. In this study, Ag and Zn nanoparticles incorporated into titanium oxide nanotubular layers were studied with regard to how they affect Candida albicans, Candida parapsilosis, and Streptococcus mutans. Layers of titanium oxide nanotubes with an average diameter of 110 nm were fabricated by electrochemical anodization, annealed at 650 °C, and modified with approx. 5 wt % Ag or Zn nanoparticles. The surfaces were examined with the scanning electron microscopy-energy dispersive X-ray analysis, scanning transmission electron microscopy, and X-ray photoelectron spectroscopy techniques and subjected to evaluation of microbial-killing and microbial adhesion-inhibiting potency. In a 1.5 h long adhesion test, the samples were found more effective toward yeast strains than toward S. mutans. In a release-killing test, the microorganisms were almost completely eliminated by the samples, either within 3 h of contact (for S. mutans) or 24 h of contact (for both yeast strains). Although further improvement is advisable, it seems that Ag and Zn nanoparticles incorporated into TiO2 nanotubular surfaces provide a powerful tool for reducing the incidence of bone implant infections. Their high bidirectional activity (against both Candida species and S. mutans) makes the layers tested particularly promising for the design of dental implants.
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Affiliation(s)
- Agata Roguska
- Institute of Physical Chemistry , Polish Academy of Sciences , Kasprzaka 44/52 , 01-224 Warsaw , Poland
| | - Anna Belcarz
- Chair and Department of Biochemistry and Biotechnology , Medical University of Lublin , Chodzki 1 , 20-093 Lublin , Poland
| | - Justyna Zalewska
- Chair and Department of Biochemistry and Biotechnology , Medical University of Lublin , Chodzki 1 , 20-093 Lublin , Poland
| | - Marcin Hołdyński
- Institute of Physical Chemistry , Polish Academy of Sciences , Kasprzaka 44/52 , 01-224 Warsaw , Poland
| | - Mariusz Andrzejczuk
- Faculty of Materials Science and Engineering , Warsaw University of Technology , Woloska 141 , 02-507 Warsaw , Poland
| | - Marcin Pisarek
- Institute of Physical Chemistry , Polish Academy of Sciences , Kasprzaka 44/52 , 01-224 Warsaw , Poland
| | - Grazyna Ginalska
- Chair and Department of Biochemistry and Biotechnology , Medical University of Lublin , Chodzki 1 , 20-093 Lublin , Poland
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Shivaram A, Bose S, Bandyopadhyay A. Understanding long-term silver release from surface modified porous titanium implants. Acta Biomater 2017; 58:550-560. [PMID: 28571692 PMCID: PMC5537021 DOI: 10.1016/j.actbio.2017.05.048] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 05/22/2017] [Accepted: 05/24/2017] [Indexed: 12/13/2022]
Abstract
Prevention of orthopedic device related infection (ODRI) using antibiotics has met with limited amount of success and is still a big concern during post-surgery. As an alternative, use of silver as an antibiotic treatment to prevent surgical infections is being used due to the well-established antimicrobial properties of silver. However, in most cases silver is used in particulate form with wound dressings or with short-term devices such as catheters but not with load-bearing implants. We hypothesize that strongly adherent silver to load-bearing implants can offer longer term solution to infection in vivo. Keeping that in mind, the focus of this study was to understand the long term release study of silver ions for a period of minimum 6months from silver coated surface modified porous titanium implants. Implants were fabricated using a LENS™ system, a powder based additive manufacturing technique, with at least 25% volume porosity, with and without TiO2 nanotubes in phosphate buffer saline (pH 7.4) to see if the total release of silver ions is within the toxic limit for human cells. Considering the fact that infection sites may reduce the local pH, silver release was also studied in acetate buffer (pH 5.0) for a period of 4weeks. Along with that, the osseointegrative properties as well as cytotoxicity of porous titanium implants were assessed in vivo for a period of 12weeks using a rat distal femur model. In vivo results indicate that porous titanium implants with silver coating show comparable, if not better, biocompatibility and bonding at the bone-implant interface negating any concerns related to toxicity related to silver to normal cells. The current research is based on our recently patented technology, however focused on understanding longer-term silver release to mitigate infection related problems in load-bearing implants that can even arise several months after the surgery. STATEMENT OF SIGNIFICANCE Prevention of orthopedic device related infection using antibiotics has met with limited success and is still a big concern during post-surgery. Use of silver as an antibiotic treatment to prevent surgical infections is being explored due to the well-established antimicrobial properties of silver. However, in most cases silver is used in particulate form with wound dressings or with short-term devices such as catheters but not with load-bearing implants. We hypothesize that strongly adherent silver to load-bearing implants can offer longer-term solution towards infection in vivo. Keeping that in mind, the focus of this study was to understand the long-term release of silver ions, for a period of minimum 6months, from silver coated surface modified porous titanium implants.
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Affiliation(s)
- Anish Shivaram
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920, USA
| | - Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920, USA
| | - Amit Bandyopadhyay
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920, USA.
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Awad NK, Edwards SL, Morsi YS. A review of TiO2 NTs on Ti metal: Electrochemical synthesis, functionalization and potential use as bone implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1401-1412. [DOI: 10.1016/j.msec.2017.02.150] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/15/2016] [Accepted: 02/25/2017] [Indexed: 10/20/2022]
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15
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Tomer VK, Duhan S, Sharma AK, Malik R, Jangra S, Nehra SP, Devi S. Humidity-Sensing Properties of Ag0Nanoparticles Supported on WO3-SiO2with Super Rapid Response and Excellent Stability. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500858] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Damodaran VB, Bhatnagar D, Leszczak V, Popat KC. Titania nanostructures: a biomedical perspective. RSC Adv 2015. [DOI: 10.1039/c5ra04271b] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A systematic and comprehensive summary of various TNS-based biomedical research with a special emphasis on drug-delivery, tissue engineering, biosensor, and anti-bacterial applications.
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Affiliation(s)
- Vinod B. Damodaran
- New Jersey Center for Biomaterials and Rutgers – The State University of New Jersey
- Piscataway
- USA
| | - Divya Bhatnagar
- New Jersey Center for Biomaterials and Rutgers – The State University of New Jersey
- Piscataway
- USA
| | - Victoria Leszczak
- Department of Mechanical Engineering and School of Biomedical Engineering
- Colorado State University
- Fort Collins
- USA
| | - Ketul C. Popat
- Department of Mechanical Engineering and School of Biomedical Engineering
- Colorado State University
- Fort Collins
- USA
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17
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Shi X, Xu Q, Tian A, Tian Y, Xue X, Sun H, Yang H, Dong C. Antibacterial activities of TiO2 nanotubes on Porphyromonas gingivalis. RSC Adv 2015. [DOI: 10.1039/c5ra00804b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The potential impacts of TiO2 nanotubes on Porphyromonas gingivalis growth and drug resistance were investigated. TiO2 nanotubes antibacterial performance can be manipulated with the photocatalytic activity as well as the geometry characteristic.
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Affiliation(s)
- Xiaoguo Shi
- College of Materials and Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - Quan Xu
- State Key Laboratory of Heavy Oil Processing
- Institute of New Energy
- China University of Petroleum
- Beijing 102249
- China
| | - Ang Tian
- College of Materials and Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - Yulou Tian
- School of Stomatology
- Hospital of Stomatology
- China Medical University
- Shenyang 110001
- China
| | - Xiangxin Xue
- College of Materials and Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - Hongjing Sun
- School of Stomatology
- Hospital of Stomatology
- China Medical University
- Shenyang 110001
- China
| | - He Yang
- College of Materials and Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - Chenbo Dong
- Department of Civil and Environmental Engineering
- Rice University
- Houston
- USA
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18
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Affiliation(s)
- Michael Dahl
- Department of Chemistry and ‡Materials Science and Engineering Program, University of California at Riverside, Riverside, California 92521, United States
| | - Yiding Liu
- Department of Chemistry and ‡Materials Science and Engineering Program, University of California at Riverside, Riverside, California 92521, United States
| | - Yadong Yin
- Department of Chemistry and ‡Materials Science and Engineering Program, University of California at Riverside, Riverside, California 92521, United States
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19
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Galstyan V, Comini E, Faglia G, Sberveglieri G. TiO2 nanotubes: recent advances in synthesis and gas sensing properties. SENSORS 2013; 13:14813-38. [PMID: 24184919 PMCID: PMC3871103 DOI: 10.3390/s131114813] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 10/22/2013] [Accepted: 10/25/2013] [Indexed: 11/16/2022]
Abstract
Synthesis--particularly by electrochemical anodization-, growth mechanism and chemical sensing properties of pure, doped and mixed titania tubular arrays are reviewed. The first part deals on how anodization parameters affect the size, shape and morphology of titania nanotubes. In the second part fabrication of sensing devices based on titania nanotubes is presented, together with their most notable gas sensing performances. Doping largely improves conductivity and enhances gas sensing performances of TiO2 nanotubes.
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Affiliation(s)
- Vardan Galstyan
- Authors to whom correspondence should be addressed; E-Mails: (V.G.); (E.C.)
| | - Elisabetta Comini
- Authors to whom correspondence should be addressed; E-Mails: (V.G.); (E.C.)
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20
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Esfandiari N, Simchi A, Bagheri R. Size tuning of Ag-decorated TiO₂ nanotube arrays for improved bactericidal capacity of orthopedic implants. J Biomed Mater Res A 2013; 102:2625-35. [PMID: 23982977 DOI: 10.1002/jbm.a.34934] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 08/20/2013] [Accepted: 08/21/2013] [Indexed: 11/05/2022]
Abstract
Surface modification of orthopedic implants using titanium dioxide nanotubes and silver nanoparticles (SNs) is a promising approach to prevent bacteria adhesion, biofilm formation, and implant infection. Herein, we utilized a straightforward and all-solution process to prepare silver-decorated TiO2 nanotube arrays with surface density of 10(3) to 10(4) per µm(2). With controlling the synthesis conditions, hexagonal closed-packed nanotubes with opening diameter of 30-100 nm that are decorated with SNs with varying sizes (12-40 nm) were prepared. Various analytical techniques were utilized to characterize the size, morphology, distribution, valance state, surface roughness, and composition of the prepared antibacterial films. The bactericidal capacity of the films were studied on Escherichia coli (E. coli) by drop-test method and correlated with the size and percentage of Ag as well as the surface density of TiO2 nanotube arrays. Synergetic effect of TiO2 nanotubes and SNs on the antibacterial activity of the composite films is shown. The bactericidal capacity is found to depend on the size characteristics of the Ag-TiO2 coating. The highest antibacterial activity is obtained for TiO2 nanotubes with opening diameter of about 100 nm and SNs with an average size of 20 nm. MTT assay using osteoblast MG63 cells was performed to examine the cell viability. We suggest that release rate of the silver ions is an important factor controlling the antibacterial activity. Additionally, the size dependency of the bactericidal capacity implies that electrical coupling between silver and TiO2 nanotubes and improved hydrophobicity of the coating might influence the bacterial behavior of the hybrid nanostructures.
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Affiliation(s)
- N Esfandiari
- Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran, Iran
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