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Popova A, Advakhova DY, Sheveyko AN, Kuptsov KA, Slukin P, Ignatov SG, Ilnitskaya A, Timoshenko RV, Erofeev AS, Kuchmizhak AA, Subramanian B, Shtansky DV. Synergistic Bactericidal Effect of Zn 2+ Ions and Reactive Oxygen Species Generated in Response to Either UV or X-ray Irradiation of Zn-Doped Plasma Electrolytic Oxidation TiO 2 Coatings. ACS APPLIED BIO MATERIALS 2024. [PMID: 39012035 DOI: 10.1021/acsabm.4c00685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Zn-containing TiO2-based coatings with Na, Ca, Si, and K additives were obtained by plasma electrolytic oxidation (PEO) of Ti in order to achieve an effective and broad bactericidal protection without compromising biocompatibility. A protocol has been developed for cleaning the coating surface from electrolyte residues, ensuring the preservation of the microstructure and composition of the surface layer. Using high-resolution transmission electron microscopy, three characteristic microstructural zones in the PEO-Zn coating are well documented: zone 1 with a TiO2-based nanocrystalline structure, zone 2 with an amorphous structure, and zone 3 around pores with an amorphous-nanocrystalline structure. The excellent cytocompatibility of PEO-Zn samples was confirmed by three different methods: monitoring the proliferation of MC3T3-E1 cells, assessing the viability of sheep osteoblast cells using calcein-AM staining and fluorescence microscopy, and incubation with spheroids based on primary osteoblast cells and mouse embryonic fibroblast NIH3T3 cells. The PEO-Zn coatings absorb >60% of the incident light over the UV and Vis-NIR spectral ranges. After 24 h, the PEO-Zn coatings completely inactivate four types of strains: Gram-positive Staphylococcus aureus CSA154 and ATCC29213 and Gram-negative Escherichia coli K261 and U20, and also prevent E. coli U20 and K261 biofilm formation. The superior antibacterial activity is associated with the synergistic effect of Zn2+ ions in safe concentration and reactive oxygen species (ROS) generated in response to either UV irradiation or soft short-term X-ray irradiation. The X-ray irradiation-induced ROS formation by a PEO coating is reported for the first time. The enhanced bactericidal activity after X-ray irradiation compared to UV illumination is attributed to the more intense ROS generation in the first few hours. The results obtained significantly expand the possibilities of using PEO coatings on the surfaces of titanium implants.
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Affiliation(s)
- Anastasiya Popova
- National University of Science and Technology "MISIS", Moscow 119049, Russia
| | - Darya Yu Advakhova
- National University of Science and Technology "MISIS", Moscow 119049, Russia
| | | | | | - Pavel Slukin
- National University of Science and Technology "MISIS", Moscow 119049, Russia
- State Research Center for Applied Microbiology and Biotechnology, Obolensk 142279, Russia
| | - Sergei G Ignatov
- National University of Science and Technology "MISIS", Moscow 119049, Russia
- State Research Center for Applied Microbiology and Biotechnology, Obolensk 142279, Russia
| | - Alla Ilnitskaya
- N.N. Blokhin National Medical Research Center of Oncology, Moscow 115478, Russia
| | - Roman V Timoshenko
- National University of Science and Technology "MISIS", Moscow 119049, Russia
| | - Alexander S Erofeev
- National University of Science and Technology "MISIS", Moscow 119049, Russia
| | - Aleksandr A Kuchmizhak
- Institute for Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041, Russia
- Pacific Quantum Center, Far Eastern Federal University, Vladivostok 690922, Russia
| | - Balasubramanian Subramanian
- Electroplating and Metal Finishing Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, Tamil Nadu
| | - Dmitry V Shtansky
- National University of Science and Technology "MISIS", Moscow 119049, Russia
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Toscano RA, Barbosa S, Campos LG, de Sousa CA, Dallazen E, Mourão CF, Shibli JA, Ervolino E, Faverani LP, Assunção WG. The Addition of Hydroxyapatite Nanoparticles on Implant Surfaces Modified by Zirconia Blasting and Acid Etching to Enhance Peri-Implant Bone Healing. Int J Mol Sci 2024; 25:7321. [PMID: 39000425 PMCID: PMC11242766 DOI: 10.3390/ijms25137321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/24/2024] [Accepted: 06/28/2024] [Indexed: 07/16/2024] Open
Abstract
This study investigated the impact of adding hydroxyapatite nanoparticles to implant surfaces treated with zirconia blasting and acid etching (ZiHa), focusing on structural changes and bone healing parameters in low-density bone sites. The topographical characterization of titanium discs with a ZiHa surface and a commercially modified zirconia-blasted and acid-etched surface (Zi) was performed using scanning electron microscopy, profilometry, and surface-free energy. For the in vivo assessment, 22 female rats were ovariectomized and kept for 90 days, after which one implant from each group was randomly placed in each tibial metaphysis of the animals. Histological and immunohistochemical analyses were performed at 14 and 28 days postoperatively (decalcified lab processing), reverse torque testing was performed at 28 days, and histometry from calcified lab processing was performed at 60 days The group ZiHa promoted changes in surface morphology, forming evenly distributed pores. For bone healing, ZiHa showed a greater reverse torque, newly formed bone area, and bone/implant contact values compared to group Zi (p < 0.05; t-test). Qualitative histological and immunohistochemical analyses showed higher features of bone maturation for ZiHa on days 14 and 28. This preclinical study demonstrated that adding hydroxyapatite to zirconia-blasted and acid-etched surfaces enhanced peri-implant bone healing in ovariectomized rats. These findings support the potential for improving osseointegration of dental implants, especially in patients with compromised bone metabolism.
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Affiliation(s)
- Ricardo Alves Toscano
- Department of Diagnosis and Surgery, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16015-050, Brazil
| | - Stéfany Barbosa
- Department of Diagnosis and Surgery, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16015-050, Brazil
| | - Larissa Gabriele Campos
- Department of Diagnosis and Surgery, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16015-050, Brazil
| | - Cecília Alves de Sousa
- Department of Dental Materials and Prosthodontics, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16015-050, Brazil
| | - Eduardo Dallazen
- Department of Diagnosis and Surgery, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16015-050, Brazil
| | - Carlos Fernando Mourão
- Department of Periodontology, School of Dentistry, Tufts University, Boston, MA 02111, USA
| | - Jamil Awad Shibli
- Dental Research Division, Department of Periodontology and Oral Implantology, University of Guarulhos (UnG), Guarulhos 07115-230, Brazil
| | - Edilson Ervolino
- Department of Basic Science, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16018-800, Brazil
| | - Leonardo P Faverani
- Department of Diagnosis and Surgery, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16015-050, Brazil
| | - Wirley Goncalves Assunção
- Department of Dental Materials and Prosthodontics, Sao Paulo State University-UNESP, Aracatuba School of Dentistry, Sao Paulo 16015-050, Brazil
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Muraev AA, Murzabekov AI, Ivanov SY, Tarasov YV, Orlov EA, Dolgalev AA. Plasma Electrolytic Oxidation for Dental Implant Surface Treatment. Sovrem Tekhnologii Med 2023; 15:18-24. [PMID: 38435475 PMCID: PMC10904360 DOI: 10.17691/stm2023.15.3.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Indexed: 03/05/2024] Open
Abstract
Current technologies of plasma electrolytic oxidation (PEO) for modifying the surfaces of dental implants made of the Grade IV titan alloy provide predictable long-term results in implant dentistry. The aim of the study is to evaluate the efficacy of PEO technology comparing two types of surface modification of dental implants made of VT1-0 medical titanium alloy. Materials and Methods 50 IRIS dental implants (Scientific Production Company LICOSTOM, Russia), 10-mm long and 4 mm in diameter, were manufactured from the VT1-0 alloy. The implant surface was treated by two PEO methods: 1) in the aqueous solution of alkaline electrolyte without any additional modifiers (PEO-Ti); 2) in the aqueous solution of orthophosphoric acid-based electrolyte containing calcium carbonate (PEO-Ca). Implants made of VT1-0 alloy after milling and without additional treatment served as control samples. The implant surfaces were studied by electron microscopy and energy dispersive X-ray spectrometry. Some of the implants were installed in sheep, samples were obtained at 2, 4, and 8 weeks and studied by microcomputer tomography. Results Regardless of the electrolyte composition, a highly developed porous surface was formed in the samples with PEO-modified surfaces. The surface of the PEO-Ti samples in a simple unmodified electrolyte was characterized by a large number of open pores with a wide range of size distribution from 200 nm to 3 μm. The pore size distribution was of a monomodal character, with a maximum near 0.23 μm. The PEO samples in the Ca-containing electrolyte had pores also in a wide range from ~80 nm to ~7 μm. The pore distribution, in contrast to PEO-Ti, was bimodal in nature, with the main maximum in the region of 1.05 μm and the concomitant maximum near 2.45 μm.The obtained surfaces of both types (PEO with Ca and Ti) possessed high purity and optimal microroughness for osseointegration. Both types of PEO treatment (PEO with Ca and Ti) have demonstrated a similar osseointegrative potential, nevertheless, the surface of the PEO-Ca showed a better contact with the implant surface (49.8%) than PEO-Ti (42.4%) obviously due to the presence of calcium in its composition. Conclusion The PEO-formed implant surfaces demonstrate high osseointegrative properties after any variants of treatment and show the potential for application in osteoporosis.
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Affiliation(s)
- A A Muraev
- Professor, Department of Oral and Maxillofacial Surgery; Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow, 117198, Russia
| | - A I Murzabekov
- Oral Surgeon, Head of the Center for Medical Care in Dental Diseases; The Central Clinical Hospital with a Polyclinic of the Presidential Administration of the Russian Federation, 15 Marshal Timoshenko St., Moscow, 121359, Russia
| | - S Yu Ivanov
- Professor, Correspondent Member of Russian Academy of Sciences, Head of the Department of Oral and Maxillofacial Surgery; Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow, 117198, Russia; Head of the Department of Maxillofacial Surgery; I.M. Sechenov First Moscow State Medical University, 8/2 Trubetskaya St., Moscow, 119991, Russia
| | - Yu V Tarasov
- General Director; Beta-Tech Medicine LLC, Bldg 1, 42 Bolshoy Boulevard, Mozhaisky District, Skolkovo Innovation Center, Moscow, 121205, Russia
| | - E A Orlov
- Head of the Laboratory; Beta-Tech Medicine LLC, Bldg 1, 42 Bolshoy Boulevard, Mozhaisky District, Skolkovo Innovation Center, Moscow, 121205, Russia
| | - A A Dolgalev
- Professor, Department of General Dental Practice; Stavropol State Medical University, 310 Mira St., Stavropol, 355017, Russia
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Kyrylenko S, Sowa M, Kazek-Kęsik A, Stolarczyk A, Pisarek M, Husak Y, Korniienko V, Deineka V, Moskalenko R, Matuła I, Michalska J, Jakóbik-Kolon A, Mishchenko O, Pogorielov M, Simka W. Nitrilotriacetic Acid Improves Plasma Electrolytic Oxidation of Titanium for Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2023; 15:19863-19876. [PMID: 37041124 PMCID: PMC10141263 DOI: 10.1021/acsami.3c00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Dental implants have become a routine, affordable, and highly reliable technology to replace tooth loss. In this regard, titanium and its alloys are the metals of choice for the manufacture of dental implants because they are chemically inert and biocompatible. However, for special cohorts of patients, there is still a need for improvements, specifically to increase the ability of implants to integrate into the bone and gum tissues and to prevent bacterial infections that can subsequently lead to peri-implantitis and implant failures. Therefore, titanium implants require sophisticated approaches to improve their postoperative healing and long-term stability. Such treatments range from sandblasting to calcium phosphate coating, fluoride application, ultraviolet irradiation, and anodization to increase the bioactivity of the surface. Plasma electrolytic oxidation (PEO) has gained popularity as a method for modifying metal surfaces and delivering the desired mechanical and chemical properties. The outcome of PEO treatment depends on the electrochemical parameters and composition of the bath electrolyte. In this study, we investigated how complexing agents affect the PEO surfaces and found that nitrilotriacetic acid (NTA) can be used to develop efficient PEO protocols. The PEO surfaces generated with NTA in combination with sources of calcium and phosphorus were shown to increase the corrosion resistance of the titanium substrate. They also support cell proliferation and reduce bacterial colonization and, hence, lead to a reduction in failed implants and repeated surgeries. Moreover, NTA is an ecologically favorable chelating agent. These features are necessary for the biomedical industry to be able to contribute to the sustainability of the public healthcare system. Therefore, NTA is proposed to be used as a component of the PEO bath electrolyte to obtain bioactive surface layers with properties desired for next-generation dental implants.
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Affiliation(s)
- Sergiy Kyrylenko
- Biomedical
Research Center, Sumy State University, 31 Sanatorna Street, Sumy 40018, Ukraine
| | - Maciej Sowa
- Faculty
of Chemistry, Silesian University of Technology, 6 B. Krzywoustego Street, 44-100 Gliwice, Poland
| | - Alicja Kazek-Kęsik
- Faculty
of Chemistry, Silesian University of Technology, 6 B. Krzywoustego Street, 44-100 Gliwice, Poland
| | - Agnieszka Stolarczyk
- Faculty
of Chemistry, Silesian University of Technology, 6 B. Krzywoustego Street, 44-100 Gliwice, Poland
| | - Marcin Pisarek
- Institute
of Physical Chemistry PAS, M. Kasprzaka Street 44/52, 01-224 Warsaw, Poland
| | - Yevheniia Husak
- Biomedical
Research Center, Sumy State University, 31 Sanatorna Street, Sumy 40018, Ukraine
- Faculty
of Chemistry, Silesian University of Technology, 6 B. Krzywoustego Street, 44-100 Gliwice, Poland
| | - Viktoriia Korniienko
- Biomedical
Research Center, Sumy State University, 31 Sanatorna Street, Sumy 40018, Ukraine
- Institute
of Atomic Physics and Spectroscopy, University
of Latvia, 3 Jelgavas
Street, Riga LV-1004, Latvia
| | - Volodymyr Deineka
- Biomedical
Research Center, Sumy State University, 31 Sanatorna Street, Sumy 40018, Ukraine
| | - Roman Moskalenko
- Ukrainian-Swedish
Research Center SUMEYA, Sumy State University, 31 Pryvokzalna Street, Sumy 40018, Ukraine
| | - Izabela Matuła
- Faculty
of
Science and Technology, Institute of Materials Engineering, University of Silesia, 75 Pułku Piechoty Street 1a, 41-500 Chorzów, Poland
| | - Joanna Michalska
- Faculty
of Chemistry, Silesian University of Technology, 6 B. Krzywoustego Street, 44-100 Gliwice, Poland
| | - Agata Jakóbik-Kolon
- Faculty
of Chemistry, Silesian University of Technology, 6 B. Krzywoustego Street, 44-100 Gliwice, Poland
| | - Oleg Mishchenko
- Nano
Prime LTD, 25 Metalowców
Street, 39-200 Dębica, Poland
- Zaporizhzhia
State Medical University, 26 Maiakovskyi Avenue, 69035 Zaporizhzhia, Ukraine
| | - Maksym Pogorielov
- Biomedical
Research Center, Sumy State University, 31 Sanatorna Street, Sumy 40018, Ukraine
- Institute
of Atomic Physics and Spectroscopy, University
of Latvia, 3 Jelgavas
Street, Riga LV-1004, Latvia
| | - Wojciech Simka
- Faculty
of Chemistry, Silesian University of Technology, 6 B. Krzywoustego Street, 44-100 Gliwice, Poland
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Polo TOB, Fonseca-Santos JM, Momesso GAC, da Silva WPP, Barbosa S, Santos AMDS, Silva MC, Garcia VG, Theodoro LH, Faverani LP. Single intraoperative infrared laser optimized bone repair in rat femoral osteotomies with experimentally induced osteoporosis. Lasers Med Sci 2023; 38:87. [PMID: 36935455 DOI: 10.1007/s10103-023-03746-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 03/06/2023] [Indexed: 03/21/2023]
Abstract
This study aimed to evaluate the effect of infrared laser (IRL) on bone repair in ovariectomized rats subjected to femoral osteotomies. Of 32 rats, half underwent bilateral ovariectomy (OVX) and the other half underwent sham ovariectomy (SHAM). A period of 3 months was defined to observe the presence of osteoporosis. The rats were subjected to osteotomies in the femurs and then fixed with a miniplate and 1.5-mm system screws. Thereafter, half of the rats from both SHAM and OVX groups were not irradiated, and the other half were irradiated by IRL using the following parameters: wavelength, 808 nm; power, 100 mW; 60 s for each point; 6 J/point; and a total of 5 points of bone gap. All animals were euthanized 60 days after surgery. The femur gap was scanned using micro-computed tomography (micro-CT). The samples were then examined under a confocal laser microscope to determine the amounts of calcein and alizarin red. The slides were stained with alizarin red and Stevenel's blue for histometric analysis. In the micro-CT analysis, the OVX groups had the lowest bone volume (P < 0.05). When the laser was applied to the OVX groups, bone turnover increased (P < 0.05). New bone formation (NBF) was comparable between SHAM and OVX/IR (P > 0.05) groups; however, it was less in the OVX groups (P < 0.05). In conclusion, the results encourage the use of IRL intraoperatively as it optimizes bone repair, mainly in animals with low bone mineral density.
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Affiliation(s)
- Tárik Ocon Braga Polo
- School of Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
| | | | - Gustavo Antonio Correa Momesso
- School of Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
- Department of Implantology, University of Santo Amaro, Unisa, São Paulo, SP, Brazil
| | | | - Stefany Barbosa
- School of Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
| | | | - Mirela Caroline Silva
- School of Dentistry, São Paulo State University (UNESP), Araçatuba, São Paulo, Brazil
| | - Valdir Gouveia Garcia
- Diagnosis and Surgery Department, School of Dentistry, São Paulo State University (UNESP), 1193 José Bonifácio Street, Araçatuba, São Paulo, 16015-050, Brazil
| | - Letícia Helena Theodoro
- Diagnosis and Surgery Department, School of Dentistry, São Paulo State University (UNESP), 1193 José Bonifácio Street, Araçatuba, São Paulo, 16015-050, Brazil
| | - Leonardo P Faverani
- Diagnosis and Surgery Department, School of Dentistry, São Paulo State University (UNESP), 1193 José Bonifácio Street, Araçatuba, São Paulo, 16015-050, Brazil.
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6
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Costa RC, Nagay BE, Dini C, Borges MHR, Miranda LFB, Cordeiro JM, Souza JGS, Sukotjo C, Cruz NC, Barão VAR. The race for the optimal antimicrobial surface: perspectives and challenges related to plasma electrolytic oxidation coating for titanium-based implants. Adv Colloid Interface Sci 2023; 311:102805. [PMID: 36434916 DOI: 10.1016/j.cis.2022.102805] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/01/2022] [Accepted: 10/20/2022] [Indexed: 01/24/2023]
Abstract
Plasma electrolytic oxidation (PEO) is a low-cost, structurally reliable, and environmentally friendly surface modification method for orthopedic and dental implants. This technique is successful for the formation of porous, corrosion-resistant, and bioactive coatings, besides introducing antimicrobial compounds easily. Given the increase in implant-related infections, antimicrobial PEO-treated surfaces have been widely proposed to surmount this public health concern. This review comprehensively discusses antimicrobial implant surfaces currently produced by PEO in terms of their in vitro and in vivo microbiological and biological properties. We present a critical [part I] and evidence-based [part II] review about the plethora of antimicrobial PEO-treated surfaces. The mechanism of microbial accumulation on implanted devices and the principles of PEO technology to ensure antimicrobial functionalization by one- or multi-step processes are outlined. Our systematic literature search showed that particular focus has been placed on the metallic and semi-metallic elements incorporated into PEO surfaces to facilitate antimicrobial properties, which are often dose-dependent, without leading to cytotoxicity in vitro. Meanwhile, there are concerns over the biocompatibility of PEO and its long-term antimicrobial effects in animal models. We clearly highlight the importance of using clinically relevant infection models and in vivo long-term assessments to guarantee the rational design of antimicrobial PEO-treated surfaces to identify the 'finish line' in the race for antimicrobial implant surfaces.
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Affiliation(s)
- Raphael C Costa
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Bruna E Nagay
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Caroline Dini
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Maria H R Borges
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Luís F B Miranda
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Jairo M Cordeiro
- Department of Dentistry, Centro Universitário das Faculdades Associadas de Ensino (UNIFAE), Sāo Joāo da Boa Vista, Sāo Paulo 13870-377, Brazil
| | - Joāo G S Souza
- Dental Research Division, Guarulhos University, Guarulhos, Sāo Paulo 07023-070, Brazil; Dentistry Science School (Faculdade de Ciências Odontológicas - FCO), Montes Claros, Minas Gerais 39401-303, Brazil
| | - Cortino Sukotjo
- Department of Restorative Dentistry, University of Illinois at Chicago College of Dentistry, Chicago, IL 60612, USA
| | - Nilson C Cruz
- Laboratory of Technological Plasmas, Institute of Science and Technology, Sāo Paulo State University (UNESP), Sorocaba, Sāo Paulo 18087-180, Brazil
| | - Valentim A R Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil.
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7
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Liu J, Huang X, Ren Y, Wong LM, Liu H, Wang S. Galvanic corrosion protection of Al-alloy in contact with carbon fibre reinforced polymer through plasma electrolytic oxidation treatment. Sci Rep 2022; 12:4532. [PMID: 35296790 PMCID: PMC8927304 DOI: 10.1038/s41598-022-08727-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 03/04/2022] [Indexed: 11/21/2022] Open
Abstract
Al-alloy/carbon fibre reinforced polymer (CFRP) joint systems offer exceptionally lightweight, superior fatigue behaviour and impact resistance for aerospace applications. Nevertheless, the galvanic corrosion at the joint interfaces accelerates the adhesive failure and strength damage. In this work, oxidation of Al 7075 alloy was studied by employing plasma electrolytic oxidation (PEO) and thin film sulphuric acid anodizing (TFSAA) methods, addressing their galvanic corrosion (GC) protection performance in contact with CFRP. Structural and electrochemical characterisations were carried out in tandem with varied oxidation process parameters, revealing that high voltage PEO resulted in crystallized compact ceramic coating and thus improved GC protection. A decrease in the GC current by ~ 90% has been achieved by using the PEO coating at 700 V compared with the ~ 12% current reduction of commercial TFSAA coating. Further microstructure studies revealed that the improved GC protection of the crystallized PEO coating was realized by suppressing the initiation and propagation of localized pitting due to the improved electrical isolation between the Al-alloy/CFRP interfaces. A high voltage PEO process provides sufficient energy to produce uniform and crystalline ceramic coating consisting of Al2O3 and mullite, which give rise to improved corrosion protection.
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Affiliation(s)
- Junyi Liu
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore, 138634, Singapore
| | - Xiaohu Huang
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore, 138634, Singapore
| | - Yi Ren
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore, 138634, Singapore
| | - Lai Mun Wong
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore, 138634, Singapore
| | - Hongfei Liu
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore, 138634, Singapore
| | - Shijie Wang
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore, 138634, Singapore.
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8
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Barão VAR, Costa RC, Shibli JA, Bertolini M, Souza JGS. Emerging titanium surface modifications: The war against polymicrobial infections on dental implants. Braz Dent J 2022; 33:1-12. [DOI: 10.1590/0103-6440202204860] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 12/18/2022] Open
Abstract
Abstract Dental implants made of titanium (Ti) material is recognized as the leading treatment option for edentulous patients’ rehabilitation, showing a high success rate and clinical longevity. However, dental implant surface acts as a platform for microbial adhesion and accumulation once exposed to the oral cavity. Biofilm formation on implant surfaces has been considered the main etiologic factor to induce inflammatory diseases, known as peri-implant mucositis and peri-implantitis; the latter being recognized as the key reason for late dental implant failure. Different factors, such as biofilm matrix production, source of carbohydrate exposure, and cross-kingdom interactions, have encouraged increased microbial accumulation on dental implants, leading to a microbiological community shift from a healthy to a pathogenic state, increasing inflammation and favoring tissue damage. These factors combined with the spatial organization of biofilms, reduced antimicrobial susceptibility, complex microbiological composition, and the irregular topography of implants hamper biofilm control and microbial killing. In spite of the well-known etiology, there is still no consensus regarding the best clinical protocol to control microbial accumulation on dental implant surfaces and treat peri-implant disease. In this sense, different coatings and Ti surface treatments have been proposed in order to reduce microbial loads and control polymicrobial infections on implantable devices. Therefore, this critical review aims to discuss the current evidence on biofilm accumulation on dental implants and central factors related to the pathogenesis process of implant-related infections. Moreover, the potential surface modifications with anti-biofilm properties for dental implant devices is discussed to shed light on further promising strategies to control peri-implantitis.
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9
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Mapping Bone Marrow Cell Response from Senile Female Rats on Ca-P-Doped Titanium Coating. MATERIALS 2022; 15:ma15031094. [PMID: 35161039 PMCID: PMC8839629 DOI: 10.3390/ma15031094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/12/2022] [Accepted: 01/20/2022] [Indexed: 12/04/2022]
Abstract
Chemical and topographical surface modifications on dental implants aim to increase the bone surface contact area of the implant and improve osseointegration. This study analyzed the cellular response of undifferentiated mesenchymal stem cells (MSC), derived from senile rats’ femoral bone marrow, when cultured on a bioactive coating (by plasma electrolytic oxidation, PEO, with Ca2+ and P5+ ions), a sandblasting followed by acid-etching (SLA) surface, and a machined surface (MSU). A total of 102 Ti-6Al-4V discs were divided into three groups (n = 34). The surface chemistry was analyzed by energy dispersive spectroscopy (EDS). Cell viability assay, gene expression of osteoblastic markers, and mineralized matrix formation were investigated. The cell growth and viability results were higher for PEO vs. MSU surface (p = 0.001). An increase in cell proliferation from 3 to 7 days (p < 0.05) and from 7 to 10 days (p < 0.05) was noted for PEO and SLA surfaces. Gene expression for OSX, ALP, BSP, and OPN showed a statistical significance (p = 0.001) among groups. In addition, the PEO surface showed a higher mineralized matrix bone formation (p = 0.003). In conclusion, MSC from senile female rats cultured on SLA and PEO surfaces showed similar cellular responses and should be considered for future clinical investigations.
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Cordeiro JM, Nagay BE, Dini C, Souza JG, Rangel EC, da Cruz NC, Yang F, van den Beucken JJ, Barão VA. Copper source determines chemistry and topography of implant coatings to optimally couple cellular responses and antibacterial activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 134:112550. [DOI: 10.1016/j.msec.2021.112550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/16/2021] [Accepted: 11/10/2021] [Indexed: 12/12/2022]
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Controlled biodegradation of magnesium alloy in physiological environment by metal organic framework nanocomposite coatings. Sci Rep 2021; 11:8645. [PMID: 33883594 PMCID: PMC8060305 DOI: 10.1038/s41598-021-87783-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/05/2021] [Indexed: 11/17/2022] Open
Abstract
Magnesium-based implants (MBIs) have recently attracted great attention in bone regeneration due to elastic modulus similar to bone. Nevertheless, the degradation rate and hydrogen release of MBIs in the body have to be tackled for practical applications. In the present study, we present a metal–organic framework (MOF) nanoplates to reduce the degradation rate of AZ91 magnesium alloy. Zeolitic imidazolate frameworks (ZIF-8) with a specific surface area of 1789 m2 g−1 were prepared by solvothermal methods, and after dispersion in a chitosan solution (10% w/w), the suspension was electrospun on the surface of AZ91 alloy. Studying the degradation rate in simulated body fluid (SBF) by electrochemical analysis including potentiodynamic polarization and electrochemical impedance spectroscopy reveals that the degradation rate of the surface-modified implants decreases by ~ 80% as compared with the unmodified specimens. The reduced alkalization of the physiological environment and hydrogen release due to the implant degradation are shown. In vitro studies by fibroblasts and MG63 osteosarcoma cells exhibit improved cell adhesion and viability. The mechanisms behind the improved degradation resistance and enhanced bioactivity are presented and discussed. Surface modification of MBIs by MOF-chitosan coatings is a promising strategy to control the biodegradation of magnesium implants for bone regeneration.
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Nonthermal plasma processing for nanostructured biomaterials and tissue engineering scaffolds: A mini review. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2021. [DOI: 10.1016/j.cobme.2020.100259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Miniplates coated by plasma electrolytic oxidation improve bone healing of simulated femoral fractures on low bone mineral density rats. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 120:111775. [PMID: 33545905 DOI: 10.1016/j.msec.2020.111775] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 11/09/2020] [Accepted: 11/27/2020] [Indexed: 01/19/2023]
Abstract
The treatment of polytrauma patients represents a great challenge in the maxillofacial and orthopedic surgery fields. Therefore, this study tested the hypothesis that the use of a bioactive coating (by plasma electrolytic oxidation, PEO) on titanium microplates could improve the fracture healing of low bone mineral density (BMD) rats. Thirty female rats underwent bilateral ovariectomy surgery (OVX), and 35 rats underwent fake surgery (SHAM). Three months later, animals were subjected to femoral fracture simulation and were fixed with either non-coated (CONV) or coated (PEO) titanium miniplates. Eight weeks postoperatively, microplate/bone complexes were analyzed through computed microtomography, histometric, confocal microscopy, molecular, and biomechanical analysis. Bioactive elements (Ca and P) were incorporated on the PEO microplate and the surface was modified in a volcano-like structure. In the microCT analysis the OVX/PEO group had greater values for Tb.Th (bone trabecular thickness), Tb.Sp (separation of bone trabeculae) and Tb.N (number of trabeculae) parameters compared to the OVX/CONV group. According to histometric analysis, the OVX/PEO group showed significantly higher new bone formation than the OVX/CONV group (P < 0.05). For the fluorochrome area, the OVX groups (PEO and CONV) showed greater values for calcein precipitation (old bone) than alizarin red (new bone). Molecular results showed greater values for proteins related to the final phase of bone formation (P < 0.05) in the OVX/PEO group. The OVX/PEO group showed higher bone/miniplate system resilience compared to the others (P < 0.05). It was concluded that PEO coating optimizes bone healing on simulated femoral fractures in low bone mineral density rats. This sheds new light in the treatment of osteoporotic patients with bone fractures.
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Osteoconductive and Osteoinductive Surface Modifications of Biomaterials for Bone Regeneration: A Concise Review. COATINGS 2020. [DOI: 10.3390/coatings10100971] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The main aim of bone tissue engineering is to fabricate highly biocompatible, osteoconductive and/or osteoinductive biomaterials for tissue regeneration. Bone implants should support bone growth at the implantation site via promotion of osteoblast adhesion, proliferation, and formation of bone extracellular matrix. Moreover, a very desired feature of biomaterials for clinical applications is their osteoinductivity, which means the ability of the material to induce osteogenic differentiation of mesenchymal stem cells toward bone-building cells (osteoblasts). Nevertheless, the development of completely biocompatible biomaterials with appropriate physicochemical and mechanical properties poses a great challenge for the researchers. Thus, the current trend in the engineering of biomaterials focuses on the surface modifications to improve biological properties of bone implants. This review presents the most recent findings concerning surface modifications of biomaterials to improve their osteoconductivity and osteoinductivity. The article describes two types of surface modifications: (1) Additive and (2) subtractive, indicating biological effects of the resultant surfaces in vitro and/or in vivo. The review article summarizes known additive modifications, such as plasma treatment, magnetron sputtering, and preparation of inorganic, organic, and composite coatings on the implants. It also presents some common subtractive processes applied for surface modifications of the biomaterials (i.e., acid etching, sand blasting, grit blasting, sand-blasted large-grit acid etched (SLA), anodizing, and laser methods). In summary, the article is an excellent compendium on the surface modifications and development of advanced osteoconductive and/or osteoinductive coatings on biomaterials for bone regeneration.
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Korniienko V, Oleshko O, Husak Y, Deineka V, Holubnycha V, Mishchenko O, Kazek-Kęsik A, Jakóbik-Kolon A, Pshenychnyi R, Leśniak-Ziółkowska K, Kalinkevich O, Kalinkevich A, Pisarek M, Simka W, Pogorielov M. Formation of a Bacteriostatic Surface on ZrNb Alloy via Anodization in a Solution Containing Cu Nanoparticles. MATERIALS 2020; 13:ma13183913. [PMID: 32899716 PMCID: PMC7560052 DOI: 10.3390/ma13183913] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 02/06/2023]
Abstract
High strength, excellent corrosion resistance, high biocompatibility, osseointegration ability, and low bacteria adhesion are critical properties of metal implants. Additionally, the implant surface plays a critical role as the cell and bacteria host, and the development of a simultaneously antibacterial and biocompatible implant is still a crucial challenge. Copper nanoparticles (CuNPs) could be a promising alternative to silver in antibacterial surface engineering due to low cell toxicity. In our study, we assessed the biocompatibility and antibacterial properties of a PEO (plasma electrolytic oxidation) coating incorporated with CuNPs (Cu nanoparticles). The structural and chemical parameters of the CuNP and PEO coating were studied with TEM/SEM (Transmission Electron Microscopy/Scanning Electron Microscopy), EDX (Energy-Dispersive X-ray Dpectroscopy), and XRD (X-ray Diffraction) methods. Cell toxicity and bacteria adhesion tests were used to prove the surface safety and antibacterial properties. We can conclude that PEO on a ZrNb alloy in Ca-P solution with CuNPs formed a stable ceramic layer incorporated with Cu nanoparticles. The new surface provided better osteoblast adhesion in all time-points compared with the nontreated metal and showed medium grade antibacterial activities. PEO at 450 V provided better antibacterial properties that are recommended for further investigation.
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Affiliation(s)
- Viktoriia Korniienko
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (V.K.); (O.O.); (Y.H.); (V.D.); (V.H.); (R.P.)
| | - Oleksandr Oleshko
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (V.K.); (O.O.); (Y.H.); (V.D.); (V.H.); (R.P.)
| | - Yevheniia Husak
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (V.K.); (O.O.); (Y.H.); (V.D.); (V.H.); (R.P.)
| | - Volodymyr Deineka
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (V.K.); (O.O.); (Y.H.); (V.D.); (V.H.); (R.P.)
| | - Viktoriia Holubnycha
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (V.K.); (O.O.); (Y.H.); (V.D.); (V.H.); (R.P.)
| | | | - Alicja Kazek-Kęsik
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland; (A.K.-K.); (A.J.-K.); (K.L.-Z.)
| | - Agata Jakóbik-Kolon
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland; (A.K.-K.); (A.J.-K.); (K.L.-Z.)
| | - Roman Pshenychnyi
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (V.K.); (O.O.); (Y.H.); (V.D.); (V.H.); (R.P.)
| | - Katarzyna Leśniak-Ziółkowska
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland; (A.K.-K.); (A.J.-K.); (K.L.-Z.)
| | | | | | - Marcin Pisarek
- Institute of Physical Chemistry PAS, 01-224 Warsaw, Poland;
| | - Wojciech Simka
- NanoPrime, 39-200 Dębica, Poland;
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland; (A.K.-K.); (A.J.-K.); (K.L.-Z.)
- Correspondence: (W.S.); (M.P.); Tel.: +48-32-237-2605 (W.S.)
| | - Maksym Pogorielov
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (V.K.); (O.O.); (Y.H.); (V.D.); (V.H.); (R.P.)
- NanoPrime, 39-200 Dębica, Poland;
- Correspondence: (W.S.); (M.P.); Tel.: +48-32-237-2605 (W.S.)
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