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Sharifi R, Vatani A, Sabzi A, Safaei M. A narrative review on application of metal and metal oxide nanoparticles in endodontics. Heliyon 2024; 10:e34673. [PMID: 39145007 PMCID: PMC11320137 DOI: 10.1016/j.heliyon.2024.e34673] [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: 03/20/2024] [Revised: 06/24/2024] [Accepted: 07/15/2024] [Indexed: 08/16/2024] Open
Abstract
The distinct physicochemical and biological characteristics of metal and metal oxide nanoparticles have attracted considerable interest in various branches of dentistry as potential solutions to the problems associated with conventional dental treatments and to promote human health. Many scientists have been interested in nanoparticles for endodontic applications in the last several decades. Endodontic treatment is more likely to be successful when metal and metal oxide nanoparticles are used. Endodontic therapies often make use of nanoparticles made of metals and metal oxides. The effect of nano metals and metal oxide in endodontic treatments has not been published or is not widely available in the literature. Therefore, this paper aims to review recent studies on the development and application of some important metal and metal oxide nanoparticles such as silver and silver oxide, zinc oxide, zirconium oxide, magnesium oxide, titanium dioxide and other metal oxide nanoparticles in endodontic therapeutic procedures.
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Affiliation(s)
- Roohollah Sharifi
- Advanced Dental Sciences and Technology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ahmad Vatani
- Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Amir Sabzi
- Advanced Dental Sciences and Technology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohsen Safaei
- Advanced Dental Sciences and Technology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Division of Dental Biomaterials, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Teles AM, Pina C, Cardoso IL, Tramontana A, Cardoso M, Duarte AS, Bartolomeu M, Noites R. Degree of Contamination of Gutta-Percha Points by Staphylococcus aureus (MRSA/MSSA) Strains. Int J Mol Sci 2024; 25:8566. [PMID: 39201252 PMCID: PMC11354985 DOI: 10.3390/ijms25168566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 07/31/2024] [Accepted: 08/02/2024] [Indexed: 09/02/2024] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is considered one of the most harmful bacteria to human health. Dentistry, like all healthcare disciplines, places great emphasis on preventing scenarios that may result in cross-infection. Although various tested and already used materials are suitable for filling the root canal system, Gutta-Percha (GP) remains the preferred and widely accepted gold standard. OBJECTIVE We performed an in vitro analysis of the contamination of GP points, regarding the strains of Methicillin-resistant (MRSA) and Methicillin-sensitive (MSSA) Staphylococcus aureus, using classical microbiology methods and molecular biology techniques. METHODS Gutta-Percha points of two different brands from opened packages (already in use for 1 month) were collected for analysis. The assessment involved incubating the GP points in Brain Heart Infusion (BHI) medium to detect microbial growth. Growing microorganisms were plated on a selective and differential chromogenic medium for MRSA/MSSA strains, and the identification of isolates was confirmed by Polymerase Chain Reaction (PCR). In the case of microbial growth, the GP point was submitted to a disinfection protocol. RESULTS From the 315 collected GP points, only 6 (1.9%) resulted in being positive for microbial growth. After confirmation by PCR, only one sample of the six GP points was contaminated by MRSA, and the remaining five were MSSA-contaminated. The disinfection protocol was effective in all contaminated GP points. CONCLUSIONS The Gutta-Percha points from opened pre-sterilized packages showed a very low degree of contamination by MRSA/MSSA. However, the detection of MSSA and MRSA strains raises concerns about potential contamination in dental clinic environments, and this risk cannot be considered negligible.
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Affiliation(s)
- Ana Moura Teles
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal; (A.M.T.); (M.C.); (A.S.D.); (M.B.)
- Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | - Cristina Pina
- FCS-UFP, Universidade Fernando Pessoa, Faculdade de Ciências da Saúde, 4200-150 Porto, Portugal; (C.P.); (I.L.C.); (A.T.)
- FP-I3ID, Instituto de Investigação, Inovação e Desenvolvimento, FP-BHS, Universidade Fernando Pessoa, Biomedical and Health Sciences, 4249-004 Porto, Portugal
- CINTESIS.UFP@RISE, Centro de Investigação em Tecnologias e Serviços de Saúde, Rede de Investigação em Saúde, Universidade Fernando Pessoa, 4200-450 Porto, Portugal
| | - Inês Lopes Cardoso
- FCS-UFP, Universidade Fernando Pessoa, Faculdade de Ciências da Saúde, 4200-150 Porto, Portugal; (C.P.); (I.L.C.); (A.T.)
- FP-I3ID, Instituto de Investigação, Inovação e Desenvolvimento, FP-BHS, Universidade Fernando Pessoa, Biomedical and Health Sciences, 4249-004 Porto, Portugal
- CINTESIS.UFP@RISE, Centro de Investigação em Tecnologias e Serviços de Saúde, Rede de Investigação em Saúde, Universidade Fernando Pessoa, 4200-450 Porto, Portugal
| | - Antea Tramontana
- FCS-UFP, Universidade Fernando Pessoa, Faculdade de Ciências da Saúde, 4200-150 Porto, Portugal; (C.P.); (I.L.C.); (A.T.)
| | - Miguel Cardoso
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal; (A.M.T.); (M.C.); (A.S.D.); (M.B.)
| | - Ana Sofia Duarte
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal; (A.M.T.); (M.C.); (A.S.D.); (M.B.)
- Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | - Maria Bartolomeu
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal; (A.M.T.); (M.C.); (A.S.D.); (M.B.)
- Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | - Rita Noites
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal; (A.M.T.); (M.C.); (A.S.D.); (M.B.)
- Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
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Ferreira I, Lopes C, Ferreira A, Braga AC, Vaz F, Pina-Vaz I, Martin-Biedma B. Nanostructured ZnO thin film to enhance gutta-percha's adhesion to endodontic sealers. BMC Oral Health 2024; 24:753. [PMID: 38951790 PMCID: PMC11218323 DOI: 10.1186/s12903-024-04496-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 06/17/2024] [Indexed: 07/03/2024] Open
Abstract
BACKGROUND Gutta-percha (GP) combined with an endodontic sealer is still the core material most widely used for tridimensional obturation. The sealer acts as a bonding agent between the GP and the root dentinal walls. However, one of the main drawbacks of GP core material is the lack of adhesiveness to the sealer. ZnO thin films have many remarkable features due to their considerable bond strength, good optical quality, and excellent piezoelectric, antibacterial, and antifungal properties, offering many potential applications in various fields. This study aimed to explore the influence of GP surface's functionalization with a nanostructured ZnO thin film on its adhesiveness to endodontic sealers. METHODS Conventional GP samples were divided randomly into three groups: (a) Untreated GP (control); (b) GP treated with argon plasma (PT); (c) Functionalized GP (PT followed by ZnO thin film deposition). GP's surface functionalization encompassed a multi-step process. First, a low-pressure argon PT was applied to modify the GP surface, followed by a ZnO thin film deposition via magnetron sputtering. The surface morphology was assessed using SEM and water contact angle analysis. Further comprehensive testing included tensile bond strength assessment evaluating Endoresin and AH Plus Bioceramic sealers' adhesion to GP. ANOVA procedures were used for data statistical analysis. RESULTS The ZnO thin film reproduced the underlying surface topography produced by PT. ZnO thin film deposition decreased the water contact angle compared to the control (p < 0.001). Endoresin showed a statistically higher mean bond strength value than AH Plus Bioceramic (p < 0.001). There was a statistically significant difference between the control and the ZnO-functionalized GP (p = 0.006), with the latter presenting the highest mean bond strength value. CONCLUSIONS The deposition of a nanostructured ZnO thin film on GP surface induced a shift towards hydrophilicity and an increased GP's adhesion to Endoresin and AH Bioceramic sealers.
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Affiliation(s)
- Inês Ferreira
- School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
- CINTESIS, R&D Unit, Faculty of Medicine, University of Porto, Porto, Portugal
- Faculty of Dental Medicine, University of Porto, Porto, Portugal
| | - Cláudia Lopes
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, Portugal
- LaPMET-Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, Portugal
| | - Armando Ferreira
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, Portugal
- LaPMET-Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, Portugal
| | - Ana Cristina Braga
- Department of Production and Systems, ALGORITMI Center, University of Minho, Braga, Portugal
| | - Filipe Vaz
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, Portugal
- LaPMET-Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, Portugal
| | - Irene Pina-Vaz
- CINTESIS, R&D Unit, Faculty of Medicine, University of Porto, Porto, Portugal.
- Faculty of Dental Medicine, University of Porto, Porto, Portugal.
| | - Benjamin Martin-Biedma
- Oral Sciences Research Group, Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Health Research Institute of Santiago (IDIS), Santiago de Compostela, Spain
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Aida MS, Alonizan N, Zarrad B, Hjiri M. Influence of plant extract on the homogeneous and heterogeneous green chemistry synthesis of nanostructured ZnO. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2023. [DOI: 10.1080/16583655.2023.2179819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Affiliation(s)
- M. S. Aida
- Department of Physics Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - N. Alonizan
- Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, City Dammam, Kingdom of Saudi Arabia
| | - B. Zarrad
- Department of Physics Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - M. Hjiri
- Department of Physics Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
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Capuano N, Amato A, Dell’Annunziata F, Giordano F, Folliero V, Di Spirito F, More PR, De Filippis A, Martina S, Amato M, Galdiero M, Iandolo A, Franci G. Nanoparticles and Their Antibacterial Application in Endodontics. Antibiotics (Basel) 2023; 12:1690. [PMID: 38136724 PMCID: PMC10740835 DOI: 10.3390/antibiotics12121690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Root canal treatment represents a significant challenge as current cleaning and disinfection methodologies fail to remove persistent bacterial biofilms within the intricate anatomical structures. Recently, the field of nanotechnology has emerged as a promising frontier with numerous biomedical applications. Among the most notable contributions of nanotechnology are nanoparticles, which possess antimicrobial, antifungal, and antiviral properties. Nanoparticles cause the destructuring of bacterial walls, increasing the permeability of the cell membrane, stimulating the generation of reactive oxygen species, and interrupting the replication of deoxyribonucleic acid through the controlled release of ions. Thus, they could revolutionize endodontics, obtaining superior results and guaranteeing a promising short- and long-term prognosis. Therefore, chitosan, silver, graphene, poly(lactic) co-glycolic acid, bioactive glass, mesoporous calcium silicate, hydroxyapatite, zirconia, glucose oxidase magnetic, copper, and zinc oxide nanoparticles in endodontic therapy have been investigated in the present review. The diversified antimicrobial mechanisms of action, the numerous applications, and the high degree of clinical safety could encourage the scientific community to adopt nanoparticles as potential drugs for the treatment of endodontic diseases, overcoming the limitations related to antibiotic resistance and eradication of the biofilm.
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Affiliation(s)
- Nicoletta Capuano
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
| | - Alessandra Amato
- Department of Neuroscience, Reproductive Science and Dentistry, University of Naples Federico II, 80138 Naples, Italy;
| | - Federica Dell’Annunziata
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (P.R.M.); (A.D.F.); (M.G.)
| | - Francesco Giordano
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
| | - Veronica Folliero
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
| | - Federica Di Spirito
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
| | - Pragati Rajendra More
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (P.R.M.); (A.D.F.); (M.G.)
| | - Anna De Filippis
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (P.R.M.); (A.D.F.); (M.G.)
| | - Stefano Martina
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
| | - Massimo Amato
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
| | - Massimiliano Galdiero
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (P.R.M.); (A.D.F.); (M.G.)
- Complex Operative Unity of Virology and Microbiology, University Hospital of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Alfredo Iandolo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
| | - Gianluigi Franci
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy; (N.C.); (F.D.); (F.G.); (V.F.); (F.D.S.); (S.M.); (M.A.)
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Ferreira I, Lopes C, Rodrigues MS, Rodrigues PV, Castro C, Braga AC, Lopes M, Vaz F, Pina-Vaz I, Martín-Biedma B. Functionalization of gutta-percha surfaces with argon and oxygen plasma treatments to enhance adhesiveness. Sci Rep 2023; 13:12303. [PMID: 37516768 PMCID: PMC10387088 DOI: 10.1038/s41598-023-37372-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/20/2023] [Indexed: 07/31/2023] Open
Abstract
Gutta-percha's lack of adhesion has been presented as a drawback to avoid gaps at sealer/gutta-percha interface. Plasma treatments have been scarcely assessed on gutta-percha surfaces as a method of enhancing adhesiveness. This study aimed to evaluate the effect of low-pressure Argon and Oxygen plasma atmospheres on conventional and bioceramic gutta-percha standardized smooth discs, assessing their roughness, surface free energy, chemical structure, and sealer wettability. A Low-Pressure Plasma Cleaner by Diener Electronic (Zepto Model) was used. Different gases (Argon or Oxygen), powers (25 W, or 50 W), and exposure times (30 s, 60 s, 120 s, or 180 s) were tested in control and experimental groups. Kruskal-Wallis and Student's t-test were used in data analysis. Statistically significant differences were detected when P < 0.05. Both gases showed different behaviors according to the parameters selected. Even though chemical changes were detected, the basic molecular structure was maintained. Argon or Oxygen plasma treatments favoured the wetting of conventional and bioceramic gutta-perchas by Endoresin and AH Plus Bioceramic sealers (P < 0.001). Overall, the functionalization of gutta-percha surfaces with Argon or Oxygen plasma treatments can increase roughness, surface free energy and wettability, which might improve its adhesive properties when compared to non-treated gutta-percha.
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Affiliation(s)
- Inês Ferreira
- CINTESIS Faculty of Medicine of the University of Porto, Porto, Portugal
- Faculty of Dental Medicine of the University of Porto, Porto, Portugal
- School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Cláudia Lopes
- Centre of Physics (CFUM), University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Marco S Rodrigues
- Centre of Physics (CFUM), University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Pedro V Rodrigues
- Institute for Polymers and Composites, University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Cidália Castro
- Institute for Polymers and Composites, University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Ana Cristina Braga
- Department of Production and Systems, ALGORITMI Center, University of Minho, Braga, Portugal
| | - Maria Lopes
- REQUIMTE-LAQV, Department of Metallurgical and Materials Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| | - Filipe Vaz
- Centre of Physics (CFUM), University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Irene Pina-Vaz
- Faculty of Dental Medicine of the University of Porto, Porto, Portugal.
- CINTESIS@RISE, MEDCIDS, Faculty of Medicine of the University of Porto, Porto, Portugal.
| | - Benjamin Martín-Biedma
- School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
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Pushpalatha C, Suresh J, Gayathri VS, Sowmya SV, Augustine D, Alamoudi A, Zidane B, Mohammad Albar NH, Patil S. Zinc Oxide Nanoparticles: A Review on Its Applications in Dentistry. Front Bioeng Biotechnol 2022; 10:917990. [PMID: 35662838 PMCID: PMC9160914 DOI: 10.3389/fbioe.2022.917990] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 04/28/2022] [Indexed: 11/13/2022] Open
Abstract
Nanotechnology in modern material science is a research hot spot due to its ability to provide novel applications in the field of dentistry. Zinc Oxide Nanoparticles (ZnO NPs) are metal oxide nanoparticles that open new opportunities for biomedical applications that range from diagnosis to treatment. The domains of these nanoparticles are wide and diverse and include the effects brought about due to the anti-microbial, regenerative, and mechanical properties. The applications include enhancing the anti-bacterial properties of existing restorative materials, as an anti-sensitivity agent in toothpastes, as an anti-microbial and anti-fungal agent against pathogenic oral microflora, as a dental implant coating, to improve the anti-fungal effect of denture bases in rehabilitative dentistry, remineralizing cervical dentinal lesions, increasing the stability of local drug delivery agents and other applications.
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Affiliation(s)
- C Pushpalatha
- Department of Pedodontics and Preventive Dentistry, Faculty of Dental Sciences, M.S. Ramaiah University of Applied Sciences, Bangalore, India
| | - Jithya Suresh
- Department of Pedodontics and Preventive Dentistry, Faculty of Dental Sciences, M.S. Ramaiah University of Applied Sciences, Bangalore, India
| | - VS Gayathri
- Department of Pedodontics and Preventive Dentistry, Faculty of Dental Sciences, M.S. Ramaiah University of Applied Sciences, Bangalore, India
| | - SV Sowmya
- Department of Oral Pathology & Microbiology, Faculty of Dental Sciences, M.S. Ramaiah University of Applied Sciences, Bangalore, India
| | - Dominic Augustine
- Department of Oral Pathology & Microbiology, Faculty of Dental Sciences, M.S. Ramaiah University of Applied Sciences, Bangalore, India
| | - Ahmed Alamoudi
- Oral Biology Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Bassam Zidane
- Restorative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Shwajra Campus, Jazan University, Jazan, Saudi Arabia
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Chachlioutaki K, Karavasili C, Adamoudi E, Tsitsos A, Economou V, Beltes C, Bouropoulos N, Katsamenis OL, Doherty R, Bakopoulou A, Fatouros DG. Electrospun Nanofiber Films Suppress Inflammation In Vitro and Eradicate Endodontic Bacterial Infection in an E. faecalis-Infected Ex Vivo Human Tooth Culture Model. ACS Biomater Sci Eng 2022; 8:2096-2110. [PMID: 35427110 DOI: 10.1021/acsbiomaterials.2c00150] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Treatment failure of endodontic infections and their concurrent inflammations is commonly associated with microbial persistence and reinfection, also stemming from the anatomical restrictions of the root canal system. Aiming to address the shortcomings of current treatment options, a fast-disintegrating nanofibrous film was developed for the intracanal coadministration of an antimicrobial (ZnO nanoparticles) and an anti-inflammatory (ketoprofen) agent. The electrospun films were fabricated based on polymers that dissolve rapidly to constitute the actives readily available at the site of action, aiming to eliminate both microbial infection and inflammation. The anti-inflammatory potency of the nanofiber films was assessed in an in vitro model of lipopolysaccharide (LPS)-stimulated RAW 264.7 cells after confirming their biocompatibility in the same cell line. The nanofiber films were found effective against Enterococcus faecalis, one of the most prominent pathogens inside the root canal space, both in vitro and ex vivo using a human tooth model experimentally infected with E. faecalis. The physical properties and antibacterial and anti-inflammatory potency of the proposed electrospun nanofiber films constitute a promising therapeutic module in the endodontic therapy of nonvital infected teeth. All manuscripts must be accompanied by an abstract. The abstract should briefly state the problem or purpose of the research, indicate the theoretical or experimental plan used, summarize the principal findings, and point out major conclusions.
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Affiliation(s)
- Konstantina Chachlioutaki
- Department of Pharmacy, Division of Pharmaceutical Technology, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - Christina Karavasili
- Department of Pharmacy, Division of Pharmaceutical Technology, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - Elisavet Adamoudi
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - Anestis Tsitsos
- Laboratory of Hygiene of Foods of Animal Origin─Veterinary Public Health, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - Vangelis Economou
- Laboratory of Hygiene of Foods of Animal Origin─Veterinary Public Health, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - Charis Beltes
- Department of Endodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - Nikolaos Bouropoulos
- Department of Materials Science, University of Patras, Rio 26504, Patras, Greece.,Foundation for Research and Technology Hellas, Institute of Chemical Engineering and High Temperature Chemical Processes, Patras 26504, Greece
| | - Orestis L Katsamenis
- μ-VIS X-ray Imaging Centre, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Regan Doherty
- Biomedical Imaging Unit, University Hospital Southampton NHS Trust, Southampton SO16 6YD, United Kingdom
| | - Athina Bakopoulou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
| | - Dimitrios G Fatouros
- Department of Pharmacy, Division of Pharmaceutical Technology, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
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Parhi S, Pal S, Das SK, Ghosh P. Strategies toward development of antimicrobial biomaterials for dental healthcare applications. Biotechnol Bioeng 2021; 118:4590-4622. [PMID: 34599764 DOI: 10.1002/bit.27948] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/19/2021] [Accepted: 09/26/2021] [Indexed: 12/25/2022]
Abstract
Several approaches for elimination of oral pathogens are being explored at the present time since oral diseases remain prevalent affecting approximately 3.5 billion people worldwide. Need for antimicrobial biomaterials in dental healthcare include but is not restricted to designing resin composites and adhesives for prevention of dental caries. Constant efforts are also being made to develop antimicrobial strategies for clearance of endodontic space prior root canal treatment and for treatment of periimplantitis and periodontitis. This article discusses various conventional and nanotechnology-based strategies to achieve antimicrobial efficacy in dental biomaterials. Recent developments in the design and synthesis of antimicrobial peptides and antifouling zwitterionic polymers to effectively lessen the risks of antimicrobial drug resistance are also outlined in this review. Further, the role of contemporary strategies such as use of smart biomaterials, ionic solvent-based biomaterials and quorum quenchers incorporated biomaterials in the elimination of dental pathogens are described in detail. Lastly, we mentioned the approach of using polymers to print custom-made three-dimensional antibacterial dental products via additive manufacturing technologies. This review provides a critical perspective on the chemical, biomimetic, and engineering strategies intended for developing antimicrobial biomaterials that have the potential to substantially improve the dental health.
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Affiliation(s)
- Shivangi Parhi
- Division of Structural Biology and Bioinformatics, CSIR-Indian Institute of Chemical Biology, Kolkata, India.,Academy of Scientific and Innovative Research (AcSIR), AcSIR Headquarters CSIR-HRDC Campus, Ghaziabad, India
| | - Sreyasi Pal
- Division of Structural Biology and Bioinformatics, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Sujoy K Das
- Academy of Scientific and Innovative Research (AcSIR), AcSIR Headquarters CSIR-HRDC Campus, Ghaziabad, India.,Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Paulomi Ghosh
- Division of Structural Biology and Bioinformatics, CSIR-Indian Institute of Chemical Biology, Kolkata, India.,Academy of Scientific and Innovative Research (AcSIR), AcSIR Headquarters CSIR-HRDC Campus, Ghaziabad, India
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10
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Gas Sensors Based on Localized Surface Plasmon Resonances: Synthesis of Oxide Films with Embedded Metal Nanoparticles, Theory and Simulation, and Sensitivity Enhancement Strategies. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125388] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This work presents a comprehensive review on gas sensors based on localized surface plasmon resonance (LSPR) phenomenon, including the theory of LSPR, the synthesis of nanoparticle-embedded oxide thin films, and strategies to enhance the sensitivity of these optical sensors, supported by simulations of the electromagnetic properties. The LSPR phenomenon is known to be responsible for the unique colour effects observed in the ancient Roman Lycurgus Cup and at the windows of the medieval cathedrals. In both cases, the optical effects result from the interaction of the visible light (scattering and absorption) with the conduction band electrons of noble metal nanoparticles (gold, silver, and gold–silver alloys). These nanoparticles are dispersed in a dielectric matrix with a relatively high refractive index in order to push the resonance to the visible spectral range. At the same time, they have to be located at the surface to make LSPR sensitive to changes in the local dielectric environment, the property that is very attractive for sensing applications. Hence, an overview of gas sensors is presented, including electronic-nose systems, followed by a description of the surface plasmons that arise in noble metal thin films and nanoparticles. Afterwards, metal oxides are explored as robust and sensitive materials to host nanoparticles, followed by preparation methods of nanocomposite plasmonic thin films with sustainable techniques. Finally, several optical properties simulation methods are described, and the optical LSPR sensitivity of gold nanoparticles with different shapes, sensing volumes, and surroundings is calculated using the discrete dipole approximation method.
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11
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Moradpoor H, Safaei M, Mozaffari HR, Sharifi R, Imani MM, Golshah A, Bashardoust N. An overview of recent progress in dental applications of zinc oxide nanoparticles. RSC Adv 2021; 11:21189-21206. [PMID: 35479373 PMCID: PMC9034121 DOI: 10.1039/d0ra10789a] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 06/01/2021] [Indexed: 12/15/2022] Open
Abstract
Nanotechnology is an emerging field of science, engineering, and technology concerning the materials in nanoscale dimensions. Several materials are used in dentistry, which can be modified by applying nanotechnology. Nanotechnology has various applications in dentistry to achieve reliable treatment outcomes. The most common nanometals used in dental materials are gold, silver, copper oxide, magnesium oxide, iron oxide, cerium oxide, aluminum oxide, titanium dioxide, and zinc oxide (ZnO). ZnO nanoparticles (NPs), with their unparalleled properties such as high selectivity, enhanced cytotoxicity, biocompatibility, and easy synthesis as important materials were utilized in the field of dentistry. With this background, the present review aimed to discuss the current progress and gain an insight into applications of ZnO NPs in nanodentistry, including restorative, endodontic, implantology, periodontal, prosthodontics, and orthodontics fields.
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Affiliation(s)
- Hedaiat Moradpoor
- Department of Prosthodontics, School of Dentistry, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Mohsen Safaei
- Advanced Dental Sciences Research Center, School of Dentistry, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Hamid Reza Mozaffari
- Department of Oral and Maxillofacial Medicine, School of Dentistry, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Roohollah Sharifi
- Department of Endodontics, School of Dentistry, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Mohammad Moslem Imani
- Department of Orthodontics, School of Dentistry, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Amin Golshah
- Department of Orthodontics, School of Dentistry, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Negin Bashardoust
- Students Research Committee, Kermanshah University of Medical Sciences Kermanshah Iran
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12
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Santos Morais D, Azenha Rodrigues M, Lopes C, Vaz F, Grenho L, Helena Fernandes M, Miranda Guedes R, Ascensão Lopes M. Bioactive and biopassive treatment of poly(ethylene terephthalate) multifilament textile yarns to improve/prevent fibroblast viability. J Biomed Mater Res B Appl Biomater 2021; 109:2213-2226. [PMID: 34037321 DOI: 10.1002/jbm.b.34882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 05/04/2021] [Accepted: 05/15/2021] [Indexed: 12/23/2022]
Abstract
To modulate the physicochemical features of poly(ethylene terephthalate) (PET) multifilaments surface composing a complex textile structure (core and shell system), intended to improve upon current implants for high extension injuries of the Achilles tendon or even for its total replacement, two surface treatments with different purposes (bioactive and biopassive) were studied. The first treatment is based on amino groups grafting using ethylenediamine molecules to be applied in the structure core to improve cell adhesion and proliferation. The other treatment relates to a polytetrafluoroethylene (PTFE) coating to be applied in the structure shell to decrease its coefficient of friction and avoid adhesions. Both treatments were optimized to reach their purposed goals without harming the tensile properties of PET yarns, which were evaluated by static tensile tests. The resazurin assay and scanning electron microscopy analysis showed that the purposed goals related to fibroblast adhesion were achieved for both treatments and in the case of PTFE coating, the abrasion resistance was also improved according to the yarn-on-yarn abrasion tests.
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Affiliation(s)
- Diana Santos Morais
- LAQV-REQUIMTE, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto, Porto, Portugal.,INEGI-Instituto de Engenharia Mecânica e Gestão Industrial, Departmento de Engenharia Mecânica DEMec-FEUP, Porto, Portugal
| | - Miguel Azenha Rodrigues
- LAQV-REQUIMTE, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - Cláudia Lopes
- Centro de Física, Universidade do Minho, Braga, Portugal
| | - Filipe Vaz
- Centro de Física, Universidade do Minho, Braga, Portugal
| | - Liliana Grenho
- LAQV-REQUIMTE, Faculdade de Medicina Dentária, Universidade do Porto (FMDUP), Rua Dr. Manuel Pereira da Silva, Porto, Portugal
| | - Maria Helena Fernandes
- LAQV-REQUIMTE, Faculdade de Medicina Dentária, Universidade do Porto (FMDUP), Rua Dr. Manuel Pereira da Silva, Porto, Portugal
| | - Rui Miranda Guedes
- INEGI-Instituto de Engenharia Mecânica e Gestão Industrial, Departmento de Engenharia Mecânica DEMec-FEUP, Porto, Portugal.,Departamento de Engenharia Mecânica Faculdade de Engenharia, Universidade do Porto, Rua Dr.Roberto Frias, Porto, Portugal
| | - Maria Ascensão Lopes
- LAQV-REQUIMTE, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
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13
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Wei X, Peng P, Peng F, Dong J. Natural Polymer Eucommia Ulmoides Rubber: A Novel Material. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:3797-3821. [PMID: 33761246 DOI: 10.1021/acs.jafc.0c07560] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
As the second natural rubber resource, Eucommia ulmoides rubber (EUR) from Eucommia ulmoides Oliver is mainly composed of trans-1,4-polyisoprene, which is the isomer of natural rubber cis-1,4-polyisoprene from Hevea brasiliensis. In the past few years, the great potential application of EUR has received increasing attention, and there is a growing awareness that the natural polymer EUR could become an emerging research topic in field of the novel materials due to its unique and excellent duality of both rubber and plastic. To gain insight into its further development, in this review, the extraction, structure, physicochemical properties, and modification of EUR are discussed in detail. More emphasis on the potential applications in the fields of the environment, agriculture, engineering, and biomedical engineering is summarized. Finally, some insights into the challenges and perspectives of EUR are also suggested.
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Affiliation(s)
- Xingneng Wei
- College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Pai Peng
- College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Feng Peng
- College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Juane Dong
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
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14
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Detection of Inflammatory and Homeostasis Biomarkers after Selective Removal of Carious Dentin-An In Vivo Feasibility Study. J Clin Med 2021; 10:jcm10051003. [PMID: 33801317 PMCID: PMC7958315 DOI: 10.3390/jcm10051003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 11/20/2022] Open
Abstract
Deep carious dentin lesions induce an immune reaction within the pulp-dentin complex, leading to the release of cytokines, which might be suitable biomarkers in pulp diagnostics. This in vivo feasibility study determines the concentration of different cytokines after selective removal of carious infected dentin (SCR). In our methodology, paired samples are obtained from 21 patients—each of them with two deep carious lesions at posterior teeth without clinical symptoms. After SCR, lesions are randomly assigned to treatment strategy: Group 1 (11 patients): Carious dentin is covered either with BiodentineTM (n = 11) or gutta-percha (n = 11) before using the adhesive OptibondTM FL. Group 2 (10 patients): The adhesives ClearfilTM SE Protect Bond (n = 10) or ClearfilTM SE Bond 2 (n = 10) are directly applied. Prepared cavities are rinsed with phosphate buffered saline containing 0.05% Tween 20 (10X) for five minutes immediately after SCR (visit 1) and eight weeks later (visit 2). Rinsing liquid is regained. Concentrations of IL-1β, IL-6, IL-10, C-reactive protein (CRP), TNF-α, IFN-γ, TIMP-1, -2, and MMP-7, -8, -9 are assessed by customized multiplex assays, evaluated with fluorescence analyzer. Non-parametric statistical analysis (Wilcoxon, Mann–Whitney U Test, p < 0.05) is performed (SPSS 25). Our results show that concentrations of CRP, IL-1β, IL-6, TIMP-1, -2, and MMPs were detectable. Median concentrations of CRP, IL-1β und IL-6 were significantly higher in visit 1 (304.9, 107.4, 3.8 pg/mL), compared to visit 2 (67.8, 2.3, 0.0 pg/mL; pi < 0.001). The study revealed that the non-invasive determination of cytokines from prepared dental cavities is possible.
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Graphene nanoplatelets embedded polymer: An efficient endodontic material for root canal therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111864. [PMID: 33579494 DOI: 10.1016/j.msec.2021.111864] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 01/02/2021] [Accepted: 01/05/2021] [Indexed: 11/20/2022]
Abstract
The design and preparation of clinically relevant endodontic obturating material for root canal therapy is a great challenge. For the first time, we report a new polymer nanocomposite which was prepared by using reversible addition-fragmentation chain-transfer (RAFT) polymerization of methacrylic acid and methylene glycol dimethacrylate. The polymer was embedded with reduced graphene oxide nanoplatelets (rGO). These graphene nanoplatelets were embedded in the polymers (GNPs) have shown the tensile strength (27--36%) and the elongation at break 2.1 - 3.1% is quite similar to the commercial gutta percha (GP-C). Atomic force micrograph provided interesting information related to scattering of rGO flakes in GNPs and the surface of GNP contains crystalline spikes of height varied between 0.95 and 1.26 μm. These spikes improved the adhesion of GNPs to bio-interface. The GNPs were 95% more effective in inhibiting bacterial colonization without disturbing the nearby cell integrity compared to commercial GP. It was found that the GNPs after incubation of 24 h at 37 °C, the radius of the inhibition zone was 6.8 mm and 4.3 mm for E.coli and S. aureus, respectively indicating better effective antibacterial activity than the GP-C. This work offers biocompatible, better adhesive and antibacterial endodontic obturating material for future root canal therapy.
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16
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Chen X, Xing H, Zhou Z, Hao Y, Zhang X, Qi F, Zhao J, Gao L, Wang X. Nanozymes go oral: nanocatalytic medicine facilitates dental health. J Mater Chem B 2021; 9:1491-1502. [PMID: 33427841 DOI: 10.1039/d0tb02763d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanozymes are multi-functional nanomaterials with enzyme-like activity, which rapidly won a place in biomedicine due to their number of nanocatalytic materials types and applications. Yan and Gao first discovered horseradish peroxidase-like activity in ferromagnetic nanoparticles in 2007. With the joint efforts of many scientists, a new concept-nanocatalytic medicine-is emerging. Nanozymes overcome the inherent disadvantages of natural enzymes, such as poor environmental stability, high production costs, difficult storage and so on. Their progress in dentistry is following the advancement of materials science. The oral research and application of nanozymes is becoming a new branch of nanocatalytic medicine. In order to highlight the great contribution of nanozymes facilitating dental health, we first review the overall research progress of multi-functional nanozymes in oral related diseases, including treating dental caries, dental pulp diseases, oral ulcers and peri-implantitis; the monitoring of oral cancer, oral bacteria and ions; and the regeneration of soft and hard tissue. Additionally, we also propose the challenges remaining for nanozymes in terms of their research and application, and mention future concerns. We believe that the new catalytic nanomaterials will play important roles in dentistry in the future.
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Affiliation(s)
- Xiaohang Chen
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China. and Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Helin Xing
- Department of Prosthodontics, Beijing Stomatological Hospital and School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Zilan Zhou
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China. and Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Yujia Hao
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China. and Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Xiaoxuan Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China. and Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China and CAS Engineering Laboratory for Nanozyme, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
| | - Feng Qi
- Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, USA
| | - Jing Zhao
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China. and Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
| | - Lizeng Gao
- CAS Engineering Laboratory for Nanozyme, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
| | - Xing Wang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China. and Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan 030001, China
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17
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Wang L, Liu Y, Peng X, Sun Y, Liu X, Liu H, Lin Q, Sun H, Yang B, Li X. Preparation and Characterization of CaO/ZnO Core-shell Structured Nanoparticles. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-9029-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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A Biodegradable Antifungal-Loaded Sol-Gel Coating for the Prevention and Local Treatment of Yeast Prosthetic-Joint Infections. MATERIALS 2020; 13:ma13143144. [PMID: 32679668 PMCID: PMC7411966 DOI: 10.3390/ma13143144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 12/31/2022]
Abstract
Fungal prosthetic-joint infections are rare but devastating complications following arthroplasty. These infections are highly recurrent and expose the patient to the development of candidemia, which has high mortality rates. Patients with this condition are often immunocompromised and present several comorbidities, and thus pose a challenge for diagnosis and treatment. The most frequently isolated organisms in these infections are Candida albicans and Candida parapsilosis, pathogens that initiate the infection by developing a biofilm on the implant surface. In this study, a novel hybrid organo-inorganic sol-gel coating was developed from a mixture of organopolysiloxanes and organophosphite, to which different concentrations of fluconazole or anidulafungin were added. Then, the capacity of these coatings to prevent biofilm formation and treat mature biofilms produced by reference and clinical strains of C. albicans and C. Parapsilosis was evaluated. Anidulafungin-loaded sol-gel coatings were more effective in preventing C. albicans biofilm formation, while fluconazole-loaded sol-gel prevented C. parapsilosis biofilm formation more effectively. Treatment with unloaded sol-gel was sufficient to reduce C. albicans biofilms, and the sol-gels loaded with fluconazole or anidulafungin slightly enhanced this effect. In contrast, unloaded coatings stimulated C. parapsilosis biofilm formation, and loading with fluconazole reduced these biofilms by up to 99%. In conclusion, these coatings represent a novel therapeutic approach with potential clinical use to prevent and treat fungal prosthetic-joint infections.
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Schmidt J, Buenger L, Krohn S, Kallies R, Zeller K, Schneider H, Ziebolz D, Berg T, Haak R. Effect of a bioactive cement on the microbial community in carious dentin after selective caries removal - An in-vivo study. J Dent 2019; 92:103264. [PMID: 31843419 DOI: 10.1016/j.jdent.2019.103264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 12/07/2019] [Accepted: 12/12/2019] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Selective caries removal in deep lesions means that soft carious affected dentin is left in the center of the cavity. Thus, using a tricalcium silicate cement Biodentine™ (Septodont, Paris) to seal the remaining soft dentin could have an antibacterial effect. This in-vivo study aimed to do quantitative and qualitative analyses on the bacterial composition within carious dentin before and after selective caries removal when applying Biodentine. METHODS Eleven patients with deep primary carious lesions at two posterior teeth without pulpal symptoms were included. Carious dentin was selectively removed and sampled with a sterile round bur (Komet No. 18) at baseline visit and eight weeks later. On the first visit, one lesion per patient, the remaining carious dentin was covered with Biodentine before adhesive restoration. Caries samples were investigated by microbial cultivation, molecular analysis and amplicon deep-sequencing of 16S rRNA genes. Bacterial DNA from intact cells was differentiated from cell-free DNA by DNase degradation prior to DNA isolation. RESULTS Reduction of cell-derived as well as cell-free bacterial DNA eight weeks after selective caries removal was significantly higher when Biodentine was applied. Lactobacillus was most abundant within the microbial community of deep carious dentin lesions at the first visit. After intervention with Biodentine application, Lactobacillus was diminished to a high degree. In general, the diversity in samples, as well as bacterial composition differed interindividually as well as intraindividually. CONCLUSION AND CLINICAL SIGNIFICANCE Despite the heterogenous and diversity of microbial composition in patients, Biodentine can have beneficial antibacterial effects when applied to residual carious dentin, offering an alternative and safe treatment option. The study is officially registered with German Clinical Trials Register (DRKS00011067).
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Affiliation(s)
- Jana Schmidt
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, 04103 Leipzig, Germany.
| | - Laura Buenger
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, 04103 Leipzig, Germany
| | - Sandra Krohn
- Department of Gastroenterology, Section of Hepatology, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany
| | - René Kallies
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Katharina Zeller
- Department of Gastroenterology, Section of Hepatology, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany
| | - Hartmut Schneider
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, 04103 Leipzig, Germany
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, 04103 Leipzig, Germany
| | - Thomas Berg
- Department of Gastroenterology, Section of Hepatology, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany
| | - Rainer Haak
- Department of Gastroenterology, Section of Hepatology, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany
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