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Yu YM, Lu YP, Zhang T, Zheng YF, Liu YS, Xia DD. Biomaterials science and surface engineering strategies for dental peri-implantitis management. Mil Med Res 2024; 11:29. [PMID: 38741175 DOI: 10.1186/s40779-024-00532-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
Peri-implantitis is a bacterial infection that causes soft tissue inflammatory lesions and alveolar bone resorption, ultimately resulting in implant failure. Dental implants for clinical use barely have antibacterial properties, and bacterial colonization and biofilm formation on the dental implants are major causes of peri-implantitis. Treatment strategies such as mechanical debridement and antibiotic therapy have been used to remove dental plaque. However, it is particularly important to prevent the occurrence of peri-implantitis rather than treatment. Therefore, the current research spot has focused on improving the antibacterial properties of dental implants, such as the construction of specific micro-nano surface texture, the introduction of diverse functional coatings, or the application of materials with intrinsic antibacterial properties. The aforementioned antibacterial surfaces can be incorporated with bioactive molecules, metallic nanoparticles, or other functional components to further enhance the osteogenic properties and accelerate the healing process. In this review, we summarize the recent developments in biomaterial science and the modification strategies applied to dental implants to inhibit biofilm formation and facilitate bone-implant integration. Furthermore, we summarized the obstacles existing in the process of laboratory research to reach the clinic products, and propose corresponding directions for future developments and research perspectives, so that to provide insights into the rational design and construction of dental implants with the aim to balance antibacterial efficacy, biological safety, and osteogenic property.
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Affiliation(s)
- Ya-Meng Yu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, 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 & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China
| | - Yu-Pu Lu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, 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 & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China
| | - Ting Zhang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Yu-Feng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China.
| | - Yun-Song Liu
- 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 & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China.
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
| | - Dan-Dan Xia
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, 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 & NHC Key Laboratory of Digital Stomatology & NMPA Key Laboratory for Dental Materials, Beijing, 100081, China.
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Oliveira RI, de Oliveira IN, de Conto JF, de Souza AM, Batistuzzo de Medeiros SR, Egues SM, Padilha FF, Hernández-Macedo ML. Photocatalytic effect of N-TiO 2 conjugated with folic acid against biofilm-forming resistant bacteria. Heliyon 2023; 9:e22108. [PMID: 38027799 PMCID: PMC10658382 DOI: 10.1016/j.heliyon.2023.e22108] [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: 03/17/2023] [Revised: 09/08/2023] [Accepted: 11/04/2023] [Indexed: 12/01/2023] Open
Abstract
Antibiotic resistance challenges the treatment of bacterial biofilm-related infections, but the use of nanoparticles as a treatment is a promising strategy to overcome bacterial infections. This study applied nitrogen-doped titanium dioxide (N-TiO2) conjugated with folic acid (FA) on biofilm-forming resistant bacteria. The photocatalytic effect of TiO2 nanoparticles (NPs) was studied under ultraviolet (UV), visible light, and dark conditions at 60, 120, and 180 min against planktonic cells and biofilms of Staphylococcus aureus, methicillin-resistant Staphylococcus aureus (MRSA), and Pseudomonas aeruginosa. TiO2 NPs were in the anatase phase, spherical shaped with sizes of 10-13 nm, and effectively doped and conjugated with N and FA. The FA-conjugated nanoparticles (N-TiO2-FA and FA-TiO2) were shown to have a bactericidal effect on all bacteria between 60 and 180 min under UV and visible light conditions. Concerning biofilms, N-TiO2-FA was shown to have a highly disruptive effect on all bacterial biofilms under UV irradiation at 180 min. Meanwhile, the nanoparticles did not show DNA damaging potential and they had no cytostatic effect, indicating that these NPs are biocompatible. In sum, nanoparticle conjugation with FA promoted photocatalytic effectiveness, revealing the promise this nanomaterial holds as a biocompatible antimicrobial agent.
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Affiliation(s)
- Raphaella I.S. Oliveira
- Graduate Program in Industrial Biotechnology, Tiradentes University, 49032-490, Aracaju, SE, Brazil
- Laboratory of Molecular Biology, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
| | - Iracema N. de Oliveira
- Laboratory of Molecular Biology, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
| | - Juliana F. de Conto
- Laboratory of Materials Synthesis and Chromatography, Center for Studies in Colloidal Systems, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
| | - Augusto M. de Souza
- Department of Cell Biology and Genetics, Bioscience Center, Federal University of Rio Grande do Norte, 59078-900, Natal, RN, Brazil
| | - Silvia R. Batistuzzo de Medeiros
- Department of Cell Biology and Genetics, Bioscience Center, Federal University of Rio Grande do Norte, 59078-900, Natal, RN, Brazil
| | - Silvia M. Egues
- Laboratory of Materials Synthesis and Chromatography, Center for Studies in Colloidal Systems, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
- Graduate Program in Process Engineering, Tiradentes University, 49037-580 Aracaju, SE, Brazil
| | - Francine F. Padilha
- Graduate Program in Industrial Biotechnology, Tiradentes University, 49032-490, Aracaju, SE, Brazil
- Biomaterials Laboratory, Technology and Research Institute, Tiradentes University, Aracaju, Sergipe, Brazil
| | - Maria L. Hernández-Macedo
- Graduate Program in Industrial Biotechnology, Tiradentes University, 49032-490, Aracaju, SE, Brazil
- Laboratory of Molecular Biology, Institute of Technology and Research, Tiradentes University, Aracaju, SE, Brazil
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Masahashi N, Hatakeyama M, Mori Y, Kurishima H, Inoue H, Mokudai T, Ohmura K, Aizawa T, Hanada S. Photoinduced properties of anodized Ti alloys for biomaterial applications. Sci Rep 2023; 13:13916. [PMID: 37626098 PMCID: PMC10457320 DOI: 10.1038/s41598-023-41189-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 08/23/2023] [Indexed: 08/27/2023] Open
Abstract
The photocatalytic properties of anodic oxides on a newly developed TiNbSn and commonly used Ti6Al4V alloys as biomaterials were investigated. The alloys were anodized in an electrolyte of sodium tartrate acid with H2O2 at a high voltage and the mechanism of the photocatalytic and antiviral activities was studied. The anodized TiNbSn and Ti6Al4V exhibited highly crystallized rutile TiO2 and poorly crystallized anatase TiO2, respectively. X-ray photoelectron spectroscopy analysis revealed the presence of oxides of the alloying elements in addition to TiO2. The anodized TiNbSn exhibited higher activities than Ti6Al4V, and electron spin resonance spectra indicated that the number of hydroxyl radicals (⋅OH) generated from the anodized TiNbSn was higher than that from the anodized Ti6Al4V. The results can be explained by two possible mechanisms: the higher crystallinity of TiO2 on TiNbSn than that on the Ti6Al4V reduces the number of charge recombination sites and generates abundant ⋅OH; charge separation in the anodic oxide on TiNbSn due to the electronic band structure between TiO2 and the oxides of alloying elements enhances photo activities. The excellent photoinduced characteristics of the anodized TiNbSn are expected to contribute to the safe and reliable implant treatment.
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Affiliation(s)
- N Masahashi
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 9808577, Japan.
| | - M Hatakeyama
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 9808577, Japan
| | - Y Mori
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, 2-1 Seiryo, Aoba-ku, Sendai, 9800872, Japan
| | - H Kurishima
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, 2-1 Seiryo, Aoba-ku, Sendai, 9800872, Japan
| | - H Inoue
- Department of Materials Science, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 5998531, Japan
| | - T Mokudai
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 9808577, Japan
| | - K Ohmura
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 9808577, Japan
| | - T Aizawa
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, 2-1 Seiryo, Aoba-ku, Sendai, 9800872, Japan
| | - S Hanada
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 9808577, Japan
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Visible-Light-Enhanced Antibacterial Activity of Silver and Copper Co-Doped Titania Formed on Titanium via Chemical and Thermal Treatments. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020650. [PMID: 36677708 PMCID: PMC9866272 DOI: 10.3390/molecules28020650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/06/2023] [Accepted: 01/06/2023] [Indexed: 01/11/2023]
Abstract
Dental implants made of titanium (Ti) are used in dentistry, but peri-implantitis is a serious associated problem. Antibacterial and osteoconductive Ti dental implants may decrease the risk of peri-implantitis. In this study, titania (TiO2) co-doped with silver (Ag) at 2.5 at.% and copper (Cu) at 4.9 at.% was formed on Ti substrates via chemical and thermal treatments. The Ag and Cu co-doped TiO2 formed apatite in a simulated body fluid, which suggests osteoconductivity. It also showed antibacterial activity against Escherichia coli, which was enhanced by visible-light irradiation. This enhancement might be caused by the synergistic effect of the release of Ag and Cu and the generation of •OH from the sample. Dental implants with such a Ag and Cu co-doped TiO2 formed on their surface may reduce the risk of peri-implantitis.
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Hasan J, Bright R, Hayles A, Palms D, Zilm P, Barker D, Vasilev K. Preventing Peri-implantitis: The Quest for a Next Generation of Titanium Dental Implants. ACS Biomater Sci Eng 2022; 8:4697-4737. [PMID: 36240391 DOI: 10.1021/acsbiomaterials.2c00540] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Titanium and its alloys are frequently the biomaterial of choice for dental implant applications. Although titanium dental implants have been utilized for decades, there are yet unresolved issues pertaining to implant failure. Dental implant failure can arise either through wear and fatigue of the implant itself or peri-implant disease and subsequent host inflammation. In the present report, we provide a comprehensive review of titanium and its alloys in the context of dental implant material, and how surface properties influence the rate of bacterial colonization and peri-implant disease. Details are provided on the various periodontal pathogens implicated in peri-implantitis, their adhesive behavior, and how this relationship is governed by the implant surface properties. Issues of osteointegration and immunomodulation are also discussed in relation to titanium dental implants. Some impediments in the commercial translation for a novel titanium-based dental implant from "bench to bedside" are discussed. Numerous in vitro studies on novel materials, processing techniques, and methodologies performed on dental implants have been highlighted. The present report review that comprehensively compares the in vitro, in vivo, and clinical studies of titanium and its alloys for dental implants.
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Affiliation(s)
- Jafar Hasan
- Academic Unit of STEM, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Richard Bright
- Academic Unit of STEM, University of South Australia, Mawson Lakes, SA 5095, Australia.,College of Medicine and Public Health, Flinders University, Bedford Park 5042, South Australia, Australia
| | - Andrew Hayles
- Academic Unit of STEM, University of South Australia, Mawson Lakes, SA 5095, Australia.,College of Medicine and Public Health, Flinders University, Bedford Park 5042, South Australia, Australia
| | - Dennis Palms
- Academic Unit of STEM, University of South Australia, Mawson Lakes, SA 5095, Australia.,College of Medicine and Public Health, Flinders University, Bedford Park 5042, South Australia, Australia
| | - Peter Zilm
- Adelaide Dental School, University of Adelaide, Adelaide, 5005, South Australia, Australia
| | - Dan Barker
- ANISOP Holdings, Pty. Ltd., 101 Collins St, Melbourne VIC, 3000 Australia
| | - Krasimir Vasilev
- Academic Unit of STEM, University of South Australia, Mawson Lakes, SA 5095, Australia.,College of Medicine and Public Health, Flinders University, Bedford Park 5042, South Australia, Australia
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Antibacterial Ti-Cu implants: A critical review on mechanisms of action. Mater Today Bio 2022; 17:100447. [PMID: 36278144 PMCID: PMC9579810 DOI: 10.1016/j.mtbio.2022.100447] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Titanium (Ti) has been widely used for manufacturing of bone implants because of its mechanical properties, biological compatibility, and favorable corrosion resistance in biological environments. However, Ti implants are prone to infection (peri-implantitis) by bacteria which in extreme cases necessitate painful and costly revision surgeries. An emerging, viable solution for this problem is to use copper (Cu) as an antibacterial agent in the alloying system of Ti. The addition of copper provides excellent antibacterial activities, but the underpinning mechanisms are still obscure. This review sheds light on such mechanisms and reviews how incorporation of Cu can render Ti–Cu implants with antibacterial activity. The review first discusses the fundamentals of interactions between bacteria and implanted surfaces followed by an overview of the most common engineering strategies utilized to endow an implant with antibacterial activity. The underlying mechanisms for antibacterial activity of Ti–Cu implants are then discussed in detail. Special attention is paid to contact killing mechanisms because the misinterpretation of this mechanism is the root of discrepancies in the literature.
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Kodithuwakku P, Jayasundara D, Munaweera I, Jayasinghe R, Thoradeniya T, Weerasekera M, Ajayan PM, Kottegoda N. A Review on Recent Developments in Structural Modification of TiO2 For Food Packaging Applications. PROG SOLID STATE CH 2022. [DOI: 10.1016/j.progsolidstchem.2022.100369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kurishima H, Mori Y, Ishii K, Inoue H, Mokudai T, Fujimori S, Itoi E, Hanada S, Masahashi N, Aizawa T. Antibacterial Activity of an Anodized TiNbSn Alloy Prepared in Sodium Tartrate Electrolyte. Front Bioeng Biotechnol 2022; 10:883335. [PMID: 35480976 PMCID: PMC9035674 DOI: 10.3389/fbioe.2022.883335] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 03/18/2022] [Indexed: 11/13/2022] Open
Abstract
In this study, we anodized a TiNbSn alloy with low Young’s modulus in an electrolyte of sodium tartrate with and without hydrogen peroxide (H2O2). The photo-induced characteristics of the anodized alloy were analyzed for crystallinity and electrochemical conditions with comparisons to the effect with the addition of H2O2. The antibacterial activity was evaluated using methicillin-resistant Staphylococcus aureus and other pathogenic bacteria according to ISO 27447, and time decay antibacterial tests were also conducted. The anodized oxide had a porous microstructure with anatase- and rutile-structured titanium dioxide (TiO2). In contrast, the peaks of rutile-structured TiO2 were accelerated in the anodized TiNbSn alloy with H2O2. The formation of hydroxyl radicals and methylene blue breaching performance under ultraviolet irradiation was confirmed in the anodic oxide on TiNbSn alloy with and without H2O2. The anodic oxide on TiNbSn alloy had a robust antibacterial activity, and no significant difference was detected with or without H2O2. We conclude that anodized TiNbSn alloy with sodium tartrate electrolyte may be a functional biomaterial with a low Young’s modulus and an antibacterial function.
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Affiliation(s)
- Hiroaki Kurishima
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yu Mori
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
- *Correspondence: Yu Mori,
| | - Keiko Ishii
- Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroyuki Inoue
- Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, Sakai, Japan
| | - Takayuki Mokudai
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - Satoko Fujimori
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Eiji Itoi
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shuji Hanada
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - Naoya Masahashi
- Institute for Materials Research, Tohoku University, Sendai, Japan
| | - Toshimi Aizawa
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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Rengifo-Herrera JA, Osorio-Vargas P, Pulgarin C. A critical review on N-modified TiO 2 limits to treat chemical and biological contaminants in water. Evidence that enhanced visible light absorption does not lead to higher degradation rates under whole solar light. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:127979. [PMID: 34883373 DOI: 10.1016/j.jhazmat.2021.127979] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/19/2021] [Accepted: 11/30/2021] [Indexed: 05/27/2023]
Abstract
Intensive research has been focused on the synthesis of N-modified TiO2 materials having visible light absorption in order to get higher solar photocatalytic degradation rates of pollutants in water. However, an exhaustive revision of the topic underlines several controversial issues related to N-modified TiO2 materials; these issues concern (a) the methodology used for preparation, (b) the assessment of the structural characteristics, (c) the mechanistic action modes and (d) the raisons argued to explain the limited performances of the prepared materials for organic and biological targets photodegradation in water. Taking advantage of last year's progress in analytical chemistry and in material characterization methods, the authors show, for example, that some works in the literature controversially attribute the term nitrogen doping without enough analytical evidence. Additionally, some papers describe N-modified TiO2 photocatalysts as being able to generate holes with enough oxidative potential to form hydroxyl radicals under visible light. This last assertion often derives from a no pertinent use of illumination sources, light filters, or targets or a limited understanding of the thermodynamic aspects of the studied systems. None of N-containing materials prepared by herein presented methods leads, under solar light, to a significant enhancement in pollutants degradation and microorganism's inactivation kinetics.
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Affiliation(s)
- Julián A Rengifo-Herrera
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA) (CCT-La Plata CONICET, UNLP, CICPBA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de la Plata, 47No. 257, 1900 La Plata, Argentina.
| | - Paula Osorio-Vargas
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA) (CCT-La Plata CONICET, UNLP, CICPBA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de la Plata, 47No. 257, 1900 La Plata, Argentina; Laboratory of Thermal and Catalytic Processes (LPTC-UBB), Universidad del Bío-Bío, Facultad de Inngeniería, Departamento Ingeniería en Maderas, Concepción, Chile
| | - C Pulgarin
- School of Basic Sciences (SB), Institute of Chemical Science and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015, Lausanne, Switzerland; Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia; Colombian Academy of Exact, Physical and Natural Sciences, Carrera 28A No. 39A-63, Bogotá, Colombia.
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Ahmad Fauzi NA, Ireland AJ, Sherriff M, Bandara HMHN, Su B. Nitrogen doped titanium dioxide as an aesthetic antimicrobial filler in dental polymers. Dent Mater 2021; 38:147-157. [PMID: 34836699 DOI: 10.1016/j.dental.2021.10.019] [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: 12/17/2020] [Revised: 10/07/2021] [Accepted: 10/29/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To develop an aesthetic resin composite using a nitrogen-doped titanium dioxide (NTiO2) filler that possesses antimicrobial properties against cariogenic bacteria. METHODS N-TiO2 powder was manufactured by calcining commercial TiO2 with urea. Free radical release from the N-TiO2 powder under visible light irradiation was analysed using UV-Vis spectrophotometry. The N-TiO2 powder was incorporated into a dental resin and the photocatalytic activity assessed using a dye under both visible light and dark conditions. Using XTT assay to measure the cellular metabolic activity, the antibacterial properties of the N-TiO2 /resin composite discs were tested using Streptococcus mutans. RESULTS Doping nitrogen of TiO2 resulted in a band gap shift towards the visible light spectrum, which enabled the powder to release reactive oxygen species when exposed to visible light. When incorporated into a dental resin, the N-TiO2/resin composite still demonstrated sustained release of reactive oxygen species, maintaining its photocatalytic activity and showing an antibacterial effect towards Streptococcus mutans under visible light conditions. SIGNIFICANCE N-TiO2 filled resin composite shows great promise as a potential aesthetic resin based adhesive for orthodontic bonding.
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Affiliation(s)
- N A Ahmad Fauzi
- Paediatric Dentistry and Orthodontics Department, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; Child Dental Health, Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom
| | - A J Ireland
- Child Dental Health, Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom
| | - M Sherriff
- Child Dental Health, Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom
| | - H M H N Bandara
- Oral Microbiology, Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom
| | - B Su
- Biomaterials Engineering, Bristol Dental School, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom.
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11
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Wang W, Yu H, Li K, Lin F, Huang C, Yan B, Cheng Z, Li X, Chen G, Hou LA. Insoluble matrix proteins from shell waste for synthesis of visible-light response photocatalyst to mineralize indoor gaseous formaldehyde. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125649. [PMID: 33743377 DOI: 10.1016/j.jhazmat.2021.125649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/27/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
HCHO is the most concerned indoor air pollutant that photocatalytic degradation is a feasible approach. To achieve efficient and complete degradation of HCHO under visible light irradiation, heteroatoms are usually doped in TiO2. But using natural materials as a dopant instead of expensive and toxic chemicals to fertilize TiO2 remains challenging. This paper proposes a sustainable and green approach to synthesize an efficient N, Ca co-doped TiO2 photocatalyst (TIMP) by using the insoluble matrix proteins (IMPs) extracted from abalone shell. TIMP-0.8 achieves near completely degradation HCHO within 45 min under visible light at ambient temperature and exhibits superior stability after 7 cycles. TIMP-0.8 has monodispersity with smaller diameter, high porosity, abundant defects and high adsorption affinity for surface hydroxyls compared with pure TiO2. With the assistance of IMPs, the rate-determining step of HCHO degradation changes from -COOH oxidation to spontaneous decomposition of HCO3-, significantly facilitating the elimination and mineralization of HCHO. Overall, IMPs from abalone shell are natural surfactant, bio-templet, and dopant for TiO2 modification, contributing to desirable visible-light photocatalytic performance for HCHO degradation. This paper provides new insight for high-value utilization of waste shell and photocatalytic indoor purification.
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Affiliation(s)
- Wenjun Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Hongdi Yu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Kai Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Fawei Lin
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China.
| | - Cheng Huang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Zhanjun Cheng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Xiaoqing Li
- Qingdao Junrong Institute of Innovation Engineering Co., Ltd, Qingdao 266000, PR China
| | - Guanyi Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China; School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, PR China
| | - Li-An Hou
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China; Xi'an High-Tech Institute, Xi'an 710025, PR China.
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12
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Zhao Y, Lu R, Wang X, Huai X, Wang C, Wang Y, Chen S. Visible light-induced antibacterial and osteogenic cell proliferation properties of hydrogenated TiO 2 nanotubes/Ti foil composite. NANOTECHNOLOGY 2021; 32:195101. [PMID: 33513586 DOI: 10.1088/1361-6528/abe156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We successfully fabricated the hydrogenated TiO2 nanotubes/Ti foil (H-TNTs/f-Ti) composite via one-step anodization and two-step annealing. H-TNTs/f-Ti composite had a higher visible light-induced photoelectric response and more hydroxyl functional groups compared with Ti foil and unmodified TiO2 nanotubes/Ti foil composite, which contributed to limiting the proliferation of Streptococcus mutans and Porphyromonas gingivalis, promoting the proliferation of MC3T3-E1 cell on the hydroxylated surface, and improving the biocompatibility with osteogenic cells. Our study provides a simple and effective method for significantly improving dental implant efficacy.
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Affiliation(s)
- Yu Zhao
- Laboratory of Biomaterials and Biomechanics, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
| | - Ran Lu
- Laboratory of Biomaterials and Biomechanics, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
| | - Xin Wang
- Laboratory of Biomaterials and Biomechanics, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
| | - Xiaochen Huai
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Caiyun Wang
- Laboratory of Biomaterials and Biomechanics, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
| | - Yuji Wang
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, People's Republic of China
- Beijing Laboratory of Biomedical Materials, School of Pharmaceutical Sciences; Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing 100069, People's Republic of China
| | - Su Chen
- Laboratory of Biomaterials and Biomechanics, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing 100050, People's Republic of China
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Chen Z, Wang Z, Qiu W, Fang F. Overview of Antibacterial Strategies of Dental Implant Materials for the Prevention of Peri-Implantitis. Bioconjug Chem 2021; 32:627-638. [PMID: 33779151 DOI: 10.1021/acs.bioconjchem.1c00129] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
As dental implants have become one of the main treatment options for patients with tooth loss, the number of patients with peri-implant diseases has increased. Similar to periodontal diseases, peri-implant diseases have been associated with dental plaque formation on implants. Unconventional approaches have been reported to remove plaque from infected implants, but none of these methods can completely and permanently solve the problem of bacterial invasion. Fortunately, the constant development of antibacterial implant materials is a promising solution to this situation. In this review, the development and study of different antibacterial strategies for dental implant materials for the prevention of peri-implantitis are summarized. We hope that by highlighting the advantages and limitations of these antimicrobial strategies, we can assist in the continued development of oral implant materials.
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Affiliation(s)
- Zehao Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515, P.R. China
| | - Zhaodan Wang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515, P.R. China
| | - Wei Qiu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515, P.R. China
| | - Fuchun Fang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515, P.R. China
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14
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Wang H, Xu Z, Li Q, Wu J. Application of metal-based biomaterials in wound repair. ENGINEERED REGENERATION 2021. [DOI: 10.1016/j.engreg.2021.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Ueda T, Sato N, Koizumi R, Ueda K, Ito K, Ogasawara K, Narushima T. Formation of carbon-added anatase-rich TiO 2 layers on titanium and their antibacterial properties in visible light. Dent Mater 2020; 37:e37-e46. [PMID: 33198964 DOI: 10.1016/j.dental.2020.10.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 09/26/2020] [Accepted: 10/06/2020] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To avoid risk of infections associated with dental implants, thermal oxidation processes for practical dental Ti alloys were studied for both high bonding strength and antibacterial properties in visible light. METHODS Two-step thermal oxidation, comprising carburization (first step of treatment: in Ar-1%CO gas) and subsequent oxidation (second step of treatment: in air), was conducted on commercially pure (CP) Ti, Ti-6Al-4V (Ti64), and Ti-6Al-7Nb (Ti67) alloys to form TiO2 layers. Their bonding strengths and antibacterial properties against Escherichia coli (E. coli) in visible light (λ ≥ 400 nm) were evaluated. RESULTS TiO2 layers formed on each metal were composed of anatase and/or rutile. Anatase fraction and carbon concentration in the layers decreased with increasing temperature in the second step of treatment. Antibacterial properties of the TiO2 layers were dependent on the temperature in the second step of treatment. An approximate antibacterial activity value of 2 (killing ∼99% bacteria) was obtained when the temperatures in the second step of treatment were 673 and 773 K for CP Ti, 773 K for Ti64, and 773 and 873 K for Ti67. It was found that the TiO2 layer must contain carbon and be anatase-rich to exhibit excellent antibacterial properties. Bonding strength between the substrate and TiO2 layers formed at 773 K in the second step of treatment exceeded 80 MPa and was independent of substrate type. SIGNIFICANCE TiO2 layers, possessing both high bonding strength and excellent antibacterial properties, were successfully formed on practical dental Ti alloys via two-step thermal oxidation.
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Affiliation(s)
- Takatoshi Ueda
- Department of Materials Processing, Tohoku University, 6-6-02 Aza Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Naoki Sato
- Department of Materials Processing, Tohoku University, 6-6-02 Aza Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Ryusuke Koizumi
- Department of Materials Processing, Tohoku University, 6-6-02 Aza Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Kyosuke Ueda
- Department of Materials Processing, Tohoku University, 6-6-02 Aza Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Koyu Ito
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Kouetsu Ogasawara
- Department of Immunobiology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Takayuki Narushima
- Department of Materials Processing, Tohoku University, 6-6-02 Aza Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Research Center for Structural Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaragi 305-0047, Japan.
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