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Xu W, Yu F, Addison O, Zhang B, Guan F, Zhang R, Hou B, Sand W. Microbial corrosion of metallic biomaterials in the oral environment. Acta Biomater 2024:S1742-7061(24)00346-5. [PMID: 38942189 DOI: 10.1016/j.actbio.2024.06.032] [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: 03/27/2024] [Revised: 05/29/2024] [Accepted: 06/21/2024] [Indexed: 06/30/2024]
Abstract
A wide variety of microorganisms have been closely linked to metal corrosion in the form of adherent surface biofilms. Biofilms allow the development and maintenance of locally corrosive environments and/or permit direct corrosion including pitting corrosion. The presence of numerous genetically distinct microorganisms in the oral environment poses a threat to the integrity and durability of the surface of metallic prostheses and implants used in routine dentistry. However, the association between oral microorganisms and specific corrosion mechanisms is not clear. It is of practical importance to understand how microbial corrosion occurs and the associated risks to metallic materials in the oral environment. This knowledge is also important for researchers and clinicians who are increasingly concerned about the biological activity of the released corrosion products. Accordingly, the main goal was to comprehensively review the current literature regarding oral microbiologically influenced corrosion (MIC) including characteristics of biofilms and of the oral environment, MIC mechanisms, corrosion behavior in the presence of oral microorganisms and potentially mitigating technologies. Findings included that oral MIC has been ascribed mostly to aggressive metabolites secreted during microbial metabolism (metabolite-mediated MIC). However, from a thermodynamic point of view, extracellular electron transfer mechanisms (EET-MIC) through pili or electron transfer compounds cannot be ruled out. Various MIC mitigating methods have been demonstrated to be effective in short term, but long term evaluations are necessary before clinical applications can be considered. Currently most in-vitro studies fail to simulate the complexity of intraoral physiological conditions which may either reduce or exacerbate corrosion risk, which must be addressed in future studies. STATEMENT OF SIGNIFICANCE: A thorough analysis on literature regarding oral MIC (microbiologically influenced corrosion) of biomedical metallic materials has been carried out, including characteristics of oral environment, MIC mechanisms, corrosion behaviors in the presence of typical oral microorganisms and potential mitigating methods (materials design and surface design). There is currently a lack of mechanistic understanding of oral MIC which is very important not only to corrosion researchers but also to dentists and clinicians. This paper discusses the significance of biofilms from a biocorrosion perspective and summarizes several aspects of MIC mechanisms which could be caused by oral microorganisms. Oral MIC has been closely associated with not only the materials research but also the dental/clinical research fields in this work.
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Affiliation(s)
- Weichen Xu
- Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, 98 Daling Road, Nanning 530007, China.
| | - Fei Yu
- School of Basic Medicine, Qingdao Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266021, China.
| | - Owen Addison
- Centre for Oral Clinical Translational Science, Faculty of Dentistry Oral and Craniofacial Sciences, King's College London, Strand, London WC2R 2LS, United Kingdom
| | - Binbin Zhang
- Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, 98 Daling Road, Nanning 530007, China
| | - Fang Guan
- Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, 98 Daling Road, Nanning 530007, China
| | - Ruiyong Zhang
- Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, 98 Daling Road, Nanning 530007, China
| | - Baorong Hou
- Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Institute of Marine Corrosion Protection, Guangxi Academy of Sciences, 98 Daling Road, Nanning 530007, China
| | - Wolfgang Sand
- Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Biofilm Centre, University of Duisburg-Essen, 45141 Essen, Germany
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2
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Yu C, Yu Y, Lu Y, Quan K, Mao Z, Zheng Y, Qin L, Xia D. UiO-66/AgNPs Coating for Dental Implants in Preventing Bacterial Infections. J Dent Res 2024:220345241229646. [PMID: 38581213 DOI: 10.1177/00220345241229646] [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: 04/08/2024] Open
Abstract
Titanium (Ti)-based biomaterials lack inherent antimicrobial activities, and the dental plaque formed on the implant surface is one of the main risk factors for implant infections. Construction of an antibacterial surface can effectively prevent implant infections and enhance implant success. Silver nanoparticles (AgNPs) exhibit broad antibacterial activity and a low tendency to induce drug resistance, but AgNPs easily self-aggregate in the aqueous environment, which significantly impairs their antibacterial activity. In this study, UiO-66/AgNP (U/A) nanocomposite was prepared, where zirconium metal-organic frameworks (UiO-66) were employed as the confinement matrix to control the particle size and prevent aggregation of AgNPs. The bactericidal activity of U/A against methicillin-resistant Staphylococcus aureus and Escherichia coli increased nearly 75.51 and 484.50 times compared with individually synthesized Ag. The antibacterial mechanism can be attributed to the enhanced membrane rupture caused by the ultrafine AgNPs on UiO-66, leading to protein leakage and generation of intracellular reactive oxygen species. Then, U/A was loaded onto Ti substrates (Ti-U/A) by using self-assembly deposition methods to construct an antibacterial surface coating. Ti-U/A exhibited excellent antibacterial activities and desired biocompatibility both in vitro and in vivo. The U/A nanocomposite coating technique is thus expected to be used as a promising surface modification strategy for Ti-based dental implants for preventing dental implant infections.
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Affiliation(s)
- C Yu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- School of Environmental and Material Engineering, Yantai University, Yantai, Shandong, China
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Y Yu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Y Lu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - K Quan
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Z Mao
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - Y Zheng
- School of Materials Science and Engineering, Peking University, Beijing, China
| | - L Qin
- School of Environmental and Material Engineering, Yantai University, Yantai, Shandong, China
| | - D Xia
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
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3
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Roma M, Hegde S. Implications of graphene-based materials in dentistry: present and future. Front Chem 2024; 11:1308948. [PMID: 38495056 PMCID: PMC10941955 DOI: 10.3389/fchem.2023.1308948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 12/26/2023] [Indexed: 03/19/2024] Open
Abstract
Since the advent of nanoscience, nanobiomaterials have been applied in the dental industry. Graphene and its derivatives have attracted the most interest of all of them due to their exceptional look, biocompatibility, multiplication differential, and antibacterial capabilities. We outlined the most recent developments about their applications to dentistry in our review. There is discussion of the synthesis processes, architectures, and characteristics of materials based on graphene. The implications of graphene and its counterparts are then meticulously gathered and described. Finally, in an effort to inspire more excellent research, this paper explores the obstacles and potential of graphene-based nanomaterials for dental aspects.
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Affiliation(s)
- M. Roma
- Manipal College of Dental Sciences, Mangalore, Mangalore, Karnataka, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Shreya Hegde
- Manipal College of Dental Sciences, Mangalore, Mangalore, Karnataka, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
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Liu S, El-Angbawi A, Ji R, Rosa V, Silikas N. Optical effects of graphene addition on adhesives for orthodontic lingual retainers. Eur J Oral Sci 2024; 132:e12966. [PMID: 38062539 DOI: 10.1111/eos.12966] [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: 09/17/2023] [Accepted: 11/18/2023] [Indexed: 01/25/2024]
Abstract
The objective of this study was to determine the effects on the colour of adding increasing concentrations of graphene to orthodontic fixed retainer adhesives and to evaluate changes in optical transmission during light curing and the resultant degree of conversion. Two different types of adhesives commonly used for fixed retainers were investigated: A packable composite (Transbond) and a flowable composite (Transbond Supreme). Graphene was added to the adhesives in three different concentrations (0.01, 0.05, and 0.1 wt%). Adhesives without graphene addition were set as control groups. A Minolta colourimeter was used to measure the colour and translucency parameters. Irradiance transmitted during curing was quantified using MARC Light Collector. Fourier-transform infrared spectroscopy was used to record degree of conversion. Data were statistically analysed with the Student's t-test and one-way ANOVA with Tukey's tests (α = 0.05). The findings showed that incorporating graphene darkened the adhesive colour significantly and reduced translucency. As the graphene concentration reached 0.1 wt%, samples became opaque; yet, no adverse effect on degree of conversion was observed. The addition of graphene reduces optical transmission of lingual retainer adhesives; the effect increases with graphene concentration.
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Affiliation(s)
- Shiyao Liu
- Dentistry, University of Manchester, Manchester, UK
| | | | - Ruidong Ji
- Department of Physics and Astronomy & Photon Science Institute, University of Manchester, Manchester, UK
| | - Vinicius Rosa
- Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore, Singapore
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
- Oral Care Health Innovations and Designs Singapore, National University of Singapore, Singapore, Singapore
| | - Nick Silikas
- Dentistry, University of Manchester, Manchester, UK
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Al-Noaman A, Rawlinson SCF. Polyether ether ketone coated with nanohydroxyapatite/graphene oxide composite promotes bioactivity and antibacterial activity at the surface of the material. Eur J Oral Sci 2023; 131:e12946. [PMID: 37528738 DOI: 10.1111/eos.12946] [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: 03/31/2023] [Accepted: 07/15/2023] [Indexed: 08/03/2023]
Abstract
Polyether ether ketone (PEEK) is considered an alternative material for manufacturing dental implants. However, PEEK lacks bioactivity and antibacterial action. In a series of experiments designed to enhance the surface properties of PEEK, we present a nanohydroxyapatite (nHA) and graphene oxide (GO) composite as a coating for PEEK-based dental implants to improve biological properties and antibacterial action. PEEK discs were polished, cleaned, and coated with the composite consisting of nHA particles doped with 0.75 wt% graphene oxide by a micro-emulsion technique according to patent US8,206,813. X-ray diffraction, field emission scanning electron microscopy-energy dispersive spectroscopy, and atomic force microscopy were utilized to characterize the composite coating. The wettability of the coated and non-coated samples was assessed by optical contact angle measurement. Antibacterial action of the composite coating was explored against S. aureus and E. coli and cytotoxicity determined utilizing osteoblast-like cells and gingival fibroblasts. The findings showed that the nHA/GO composite coating, approximately 1.3 μm thick, was homogenous with few micro-cracks and adhered to the PEEK surface. The surface roughness was reduced to 21.26 nm and the wettability was improved to 54.6⁰ after coating with the composite coating. Antibacterial activity was moderate, killing 99% of S. aureus and E. coli, with acceptable levels of cytotoxicity to mammalian osteoblast-like cells and gingival fibroblasts.
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Affiliation(s)
- Ahmed Al-Noaman
- Department of Oral Surgery, College of Dentistry, University of Babylon, Babylon City, Iraq
| | - Simon C F Rawlinson
- School of Medicine and Dentistry, Queen Mary University of London, London, UK
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6
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Graphene-Based Materials in Dental Applications: Antibacterial, Biocompatible, and Bone Regenerative Properties. Int J Biomater 2023; 2023:8803283. [PMID: 36819211 PMCID: PMC9929215 DOI: 10.1155/2023/8803283] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 02/10/2023] Open
Abstract
Graphene-based materials have been shown to have advantageous properties in biomedical and dental applications due to their high mechanical, physiochemical, antibacterial, and stem cell differentiating properties. Although graphene-based materials have displayed appropriate biocompatible properties when used in implant materials for orthopedic applications, little research has been performed to specifically test the biocompatibility of graphene for dental applications. The oral environment, compared to the body, varies greatly and must be considered when evaluating biocompatibility requirements for dental applications. This review will discuss in vitro and in vivo studies that assess graphene's cytotoxicity, antibacterial properties, and cell differentiation ability to evaluate the overall biocompatibility of graphene-based materials for dental applications. Particle shape, size, and concentration were found to be major factors that affected overall biocompatibility of graphene.
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Huang S, Zhong Y, Fu Y, Zheng X, Feng Z, Mo A. Graphene and its derivatives: "one stone, three birds" strategy for orthopedic implant-associated infections. Biomater Sci 2023; 11:380-399. [PMID: 36453143 DOI: 10.1039/d2bm01507b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Orthopedic implants provide an avascular surface for microbial attachment and biofilm formation, impeding the entry of immune cells and the diffusion of antibiotics. The above is an important cause of dental and orthopedic implant-associated infection (IAI). For the prevention and treatment of IAI, the drawbacks of antibiotic resistance and surgical treatment are increasingly apparent. Due to their outstanding biological properties such as biocompatibility, immunomodulatory effects, and antibacterial properties, graphene-based nanomaterials (GBNs) have been applied to bone tissue engineering to deal with IAI, and in particular have great potential application in drug/gene carriers, multi-functional platforms, and coating forms. Here we review the latest research progress and achievements in GBNs for the prevention and treatment of IAI, mainly including their biomedical applications for antibacterial and immunomodulation effects, and for inducing osteogenesis. Furthermore, the biosafety of graphene family materials in bone tissue regeneration and the feasibility of clinical application are critically analyzed and discussed.
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Affiliation(s)
- Si Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yongjin Zhong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yu Fu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xiaofei Zheng
- Stomatology Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zeru Feng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Anchun Mo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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8
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Erdinc G. Graphene on dentistry: A bibliometric and scientometric analysis. Niger J Clin Pract 2023; 26:65-72. [PMID: 36751826 DOI: 10.4103/njcp.njcp_246_22] [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: 02/04/2023]
Abstract
Background Today, the development of dental materials is a very important issue. Graphene has been used in dentistry to strengthen many materials. Aim The aim of this study was to analyze leading countries and to identify the preferred journals, the most commonly used keywords, and the most productive authors in the field of graphene. Materials and Methods The search keyword was "graphene" on the Web of Science database; the search was restricted to before 2022. The selected search from the Web of Science database included the title of articles, authors, year of publication, country, citation count, and keywords. An analysis was performed regarding citations and documents, authors, journals, and keywords using a bibliometric software program. All articles were evaluated and subjected to scientometric analysis. Results Twenty six articles were included in the study. There has been a remarkable increase in published articles from past to present, and a regular increase is observed in the number of citations. Dental Materials has highest number of publications among the articles included in the present study. Dr. Rosa, who had the highest number of citations, is also the most effective author. Graphene has many studies in dentistry with different materials. As per the data obtained, graphene, graphene oxide, and peri-implantitis are the most used keywords and Singapore and China are at the forefront of the countries where the articles are published. Conclusion This bibliometric analysis reveals the progress and trend of research on graphene in dentistry and extensive collaborations between authors, countries, and institutions. The findings of this study can help inspire researchers to plan new studies and collaborate on graphene.
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Affiliation(s)
- G Erdinc
- Department of Prosthodontics, School of Dentistry, Karabük University, Karabük, Turkey
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Agarwalla SV, Ellepola K, Sorokin V, Ihsan M, Silikas N, Neto AHC, Seneviratne CJ, Rosa V. Antimicrobial-free graphene nanocoating decreases fungal yeast-to-hyphal switching and maturation of cross-kingdom biofilms containing clinical and antibiotic-resistant bacteria. BIOMATERIALS AND BIOSYSTEMS 2022; 8:100069. [PMID: 36824379 PMCID: PMC9934433 DOI: 10.1016/j.bbiosy.2022.100069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 10/23/2022] [Accepted: 10/23/2022] [Indexed: 12/05/2022] Open
Abstract
Candida albicans and methicillin-resistant Staphylococcus aureus (MRSA) synergize in cross-kingdom biofilms to increase the risk of mortality and morbidity due to high resistance to immune and antimicrobial defenses. Biomedical devices and implants made with titanium are vulnerable to infections that may demand their surgical removal from the infected sites. Graphene nanocoating (GN) has promising anti-adhesive properties against C. albicans. Thus, we hypothesized that GN could prevent fungal yeast-to-hyphal switching and the development of cross-kingdom biofilms. Herein, titanium (Control) was coated with high-quality GN (coverage > 99%). Thereafter, mixed-species biofilms (C. albicans combined with S. aureus or MRSA) were allowed to develop on GN and Control. There were significant reductions in the number of viable cells, metabolic activity, and biofilm biomass on GN compared with the Control (CFU counting, XTT reduction, and crystal violet assays). Also, biofilms on GN were sparse and fragmented, whereas the Control presented several bacterial cells co-aggregating with intertwined hyphal elements (confocal and scanning electronic microscopy). Finally, GN did not induce hemolysis, an essential characteristic for blood-contacting biomaterials and devices. Thus, GN significantly inhibited the formation and maturation of deadly cross-kingdom biofilms, which can be advantageous to avoid infection and surgical removal of infected devices.
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Affiliation(s)
| | - Kassapa Ellepola
- Department of Oral Biology, College of Dentistry, University of Illinois Chicago, USA
| | - Vitaly Sorokin
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore,Department of Cardiac, Thoracic and Vascular Surgery, National University Hospital, National University Health System, Singapore
| | - Mario Ihsan
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Nikolaos Silikas
- Dentistry, The University of Manchester, Manchester, United Kingdom
| | - AH Castro Neto
- Centre for Advanced 2D Materials, National University of Singapore, Singapore
| | - Chaminda Jayampath Seneviratne
- School of Dentistry, The University of Queensland, Australia,Co-corresponding author at: School of Dentistry, The University of Queensland, 288 Herston Road, Cnr Bramston Terrace & Herston Road Herston QLD 4006, Australia.
| | - Vinicius Rosa
- Faculty of Dentistry, National University of Singapore, Singapore,Centre for Advanced 2D Materials, National University of Singapore, Singapore,ORCHIDS: Oral Care Health Innovations and Designs Singapore, National University of Singapore, Singapore,Corresponding author at: Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, 119085, Singapore.
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Li X, Liang X, Wang Y, Wang D, Teng M, Xu H, Zhao B, Han L. Graphene-Based Nanomaterials for Dental Applications: Principles, Current Advances, and Future Outlook. Front Bioeng Biotechnol 2022; 10:804201. [PMID: 35360406 PMCID: PMC8961302 DOI: 10.3389/fbioe.2022.804201] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 02/08/2022] [Indexed: 12/13/2022] Open
Abstract
With the development of nanotechnology, nanomaterials have been used in dental fields over the past years. Among them, graphene and its derivatives have attracted great attentions, owing to their excellent physicochemical property, morphology, biocompatibility, multi-differentiation activity, and antimicrobial activity. In our review, we summarized the recent progress about their applications on the dentistry. The synthesis methods, structures, and properties of graphene-based materials are discussed. Then, the dental applications of graphene-based materials are emphatically collected and described. Finally, the challenges and outlooks of graphene-based nanomaterials on the dental applications are discussed in this paper, aiming at inspiring more excellent studies.
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Affiliation(s)
- Xiaojing Li
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xin Liang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Yanhui Wang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dashan Wang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Minhua Teng
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hao Xu
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Baodong Zhao
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, China
- *Correspondence: Baodong Zhao, ; Lei Han,
| | - Lei Han
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
- *Correspondence: Baodong Zhao, ; Lei Han,
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Affiliation(s)
- J L Ferracane
- Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - L E Bertassoni
- Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
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12
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Malhotra R, Han Y, Nijhuis CA, Silikas N, Castro Neto AH, Rosa V. Graphene nanocoating provides superb long-lasting corrosion protection to titanium alloy. Dent Mater 2021; 37:1553-1560. [PMID: 34420797 DOI: 10.1016/j.dental.2021.08.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 07/17/2021] [Accepted: 08/04/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The presence of metallic species around failed implants raises concerns about the stability of titanium alloy (Ti-6Al-4V). Graphene nanocoating on titanium alloy (GN) has promising anti-corrosion properties, but its long-term protective potential and structural stability remains unknown. The objective was to determine GN's anti-corrosion potential and stability over time. METHODS GN and uncoated titanium alloy (Control) were challenged with a highly acidic fluorinated corrosive medium (pH 2.0) for up to 240 days. The samples were periodically tested using potentiodynamic polarization curves, electrochemical impedance spectroscopy and inductively coupled plasma-atomic emission spectroscopy (elemental release). The integrity of samples was determined using Raman spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy and scanning electron microscopy. Statistical analyses were performed with one-sample t-test, paired t-test and one-way ANOVA with Tukey post-hoc test with a pre-set significance level of 5%. RESULTS There was negligible corrosion and elemental loss on GN. After 240 days of corrosion challenge, the corrosion rate and roughness increased by two and twelve times for the Control whereas remained unchanged for GN. The nanocoating presented remarkably high structural integrity and coverage area (>98%) at all time points tested. SIGNIFICANCE Graphene nanocoating protects titanium alloy from corrosion and dissolution over a long period while maintaining high structural integrity. This coating has promising potential for persistent protection of titanium and potentially other metallic alloys against corrosion.
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Affiliation(s)
- Ritika Malhotra
- Faculty of Dentistry, National University of Singapore, Singapore.
| | - Yingmei Han
- Department of Chemistry, National University of Singapore, Singapore.
| | - Christian A Nijhuis
- Department of Molecules and Materials, Faculty of Science and Technology, University of Twente, Netherlands.
| | - Nikolaos Silikas
- Dental Biomaterials, Dentistry, The University of Manchester, Manchester, United Kingdom.
| | - A H Castro Neto
- Centre for Advanced 2D Materials, National University of Singapore, Singapore.
| | - Vinicius Rosa
- Faculty of Dentistry, National University of Singapore, Singapore; Centre for Advanced 2D Materials, National University of Singapore, Singapore.
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