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Almutairi N, Alhussein A, Alenizy M, Ba-Armah I, Sun J, Weir MD, Xu HHK. Novel Resin-Based Antibacterial Root Surface Coating Material to Combat Dental Caries. J Funct Biomater 2024; 15:168. [PMID: 38921541 PMCID: PMC11204561 DOI: 10.3390/jfb15060168] [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: 05/07/2024] [Revised: 06/12/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024] Open
Abstract
Root caries caused by cariogenic bacteria are a burden on a large number of individuals worldwide, especially the elderly. Applying a protective coating to exposed root surfaces has the potential to inhibit the development of caries, thus preserving natural teeth. This study aimed to develop a novel antibacterial coating to combat root caries and evaluate its effectiveness using the antibacterial monomer dimethylaminohexadecyl methacrylate (DMAHDM). DMAHDM was synthesized and incorporated into a resin consisting of 55.8% urethane dimethacrylate (UDMA) and 44.2% TEG-DVBE (UV) at a 10% mass fraction of glass filler. Multiple concentrations of DMAHDM were tested for their impact on the resin's mechanical and physical properties. S. mutans biofilms grown on resin disks were analyzed for antibacterial efficacy. Cytotoxicity was assessed against human gingival fibroblasts (HGFs). The results showed an 8-log reduction in colony-forming units (CFUs) against S. mutans biofilm (mean ± sd; n = 6) (p < 0.05) when 5% DMAHDM was incorporated into the UV resin. There was a 90% reduction in metabolic activity and lactic acid production. A low level of cytotoxicity against HGF was observed without compromising the physical and mechanical properties of the resin. This coating material demonstrated promising physical properties, potent antibacterial effects, and low toxicity, suggesting its potential to protect exposed roots from caries in various dental procedures and among elderly individuals with gingival recession.
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Affiliation(s)
- Nader Almutairi
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (N.A.)
- Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Alkharj 16245, Saudi Arabia
| | - Abdullah Alhussein
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia;
| | - Mohammad Alenizy
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (N.A.)
- Department of Restorative Dental Sciences, University of Hail, Hail 55475, Saudi Arabia
| | - Ibrahim Ba-Armah
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (N.A.)
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Jirun Sun
- The ADA Forsyth Institute, Cambridge, MA 02142, USA
| | - Michael D. Weir
- Department of Biomaterials and Regenerative Dental Medicine, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Hockin H. K. Xu
- Department of Biomaterials and Regenerative Dental Medicine, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
- Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Xiao S, Sun G, Huang S, Lin C, Li Y. Nanoarchitectonics-Based Materials as a Promising Strategy in the Treatment of Endodontic Infections. Pharmaceutics 2024; 16:759. [PMID: 38931881 PMCID: PMC11207628 DOI: 10.3390/pharmaceutics16060759] [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: 04/20/2024] [Revised: 05/19/2024] [Accepted: 05/29/2024] [Indexed: 06/28/2024] Open
Abstract
Endodontic infections arise from the interactive activities of microbial communities colonizing in the intricate root canal system. The present study aims to update the latest knowledge of nanomaterials, their antimicrobial mechanisms, and their applications in endodontics. A detailed literature review of the current knowledge of nanomaterials used in endodontic applications was performed using the PubMed database. Antimicrobial nanomaterials with a small size, large specific surface area, and high chemical activity are introduced to act as irrigants, photosensitizer delivery systems, and medicaments, or to modify sealers. The application of nanomaterials in the endodontic field could enhance antimicrobial efficiency, increase dentin tubule penetration, and improve treatment outcomes. This study supports the potential of nanomaterials as a promising strategy in treating endodontic infections.
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Affiliation(s)
- Suli Xiao
- Department of Endodontics, Stomatological Hospital of Xiamen Medical College, Xiamen 361003, China;
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361003, China
| | - Guanwen Sun
- Department of Stomatology, Fujian Medical University Xiamen Humanity Hospital, Xiamen 361018, China;
| | - Shan Huang
- Department of Stomatology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen 361005, China;
| | - Chen Lin
- Department of Endodontics, Stomatological Hospital of Xiamen Medical College, Xiamen 361003, China;
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361003, China
| | - Yijun Li
- Department of Endodontics, Stomatological Hospital of Xiamen Medical College, Xiamen 361003, China;
- Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361003, China
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Afkhami F, Chen Y, Walsh LJ, Peters OA, Xu C. Application of Nanomaterials in Endodontics. BME FRONTIERS 2024; 5:0043. [PMID: 38711803 PMCID: PMC11070857 DOI: 10.34133/bmef.0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 03/20/2024] [Indexed: 05/08/2024] Open
Abstract
Recent advancements in nanotechnology have introduced a myriad of potential applications in dentistry, with nanomaterials playing an increasing role in endodontics. These nanomaterials exhibit distinctive mechanical and chemical properties, rendering them suitable for various dental applications in endodontics, including obturating materials, sealers, retro-filling agents, and root-repair materials. Certain nanomaterials demonstrate versatile functionalities in endodontics, such as antimicrobial properties that bolster the eradication of bacteria within root canals during endodontic procedures. Moreover, they offer promise in drug delivery, facilitating targeted and controlled release of therapeutic agents to enhance tissue regeneration and repair, which can be used for endodontic tissue repair or regeneration. This review outlines the diverse applications of nanomaterials in endodontics, encompassing endodontic medicaments, irrigants, obturating materials, sealers, retro-filling agents, root-repair materials, as well as pulpal repair and regeneration. The integration of nanomaterials into endodontics stands poised to revolutionize treatment methodologies, presenting substantial potential advancements in the field. Our review aims to provide guidance for the effective translation of nanotechnologies into endodontic practice, serving as an invaluable resource for researchers, clinicians, and professionals in the fields of materials science and dentistry.
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Affiliation(s)
- Farzaneh Afkhami
- School of Dentistry,
The University of Queensland, Brisbane,QLD4006, Australia
| | - Yuan Chen
- Sydney Dental School, Faculty of Medicine and Health,
The University of Sydney, Camperdown, NSW 2006, Australia
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Laurence J. Walsh
- School of Dentistry,
The University of Queensland, Brisbane,QLD4006, Australia
| | - Ove A. Peters
- School of Dentistry,
The University of Queensland, Brisbane,QLD4006, Australia
| | - Chun Xu
- School of Dentistry,
The University of Queensland, Brisbane,QLD4006, Australia
- Sydney Dental School, Faculty of Medicine and Health,
The University of Sydney, Camperdown, NSW 2006, Australia
- Charles Perkins Centre,
The University of Sydney, Camperdown, NSW 2006, Australia
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Alghofaily M, Alfraih J, Alsaud A, Almazrua N, Sumague TS, Auda SH, Alsalleeh F. The Effectiveness of Silver Nanoparticles Mixed with Calcium Hydroxide against Candida albicans: An Ex Vivo Analysis. Microorganisms 2024; 12:289. [PMID: 38399693 PMCID: PMC10891542 DOI: 10.3390/microorganisms12020289] [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: 12/06/2023] [Revised: 01/19/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
INTRODUCTION The purpose of this study was to assess the antifungal activity of silver nanoparticles (AgNPs) in combination with calcium hydroxide (Ca(OH)2) against Candida albicans (C. albicans). METHODS AgNPs was mixed with pure Ca(OH)2 powder in an aqueous base. A standard suspension (1 × 108 bacterial cells/mL) of C. albicans was prepared in a 96-well plate and incubated on shaker at 37 °C in 100% humidity to allow fungal biofilm formation in infected dentin slices (n = 98). The minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of AgNPs alone or with Ca(OH)2 were determined. The samples were separately placed in 24-well tissue culture plates and divided into three experimental groups (0.03, 0.04, and 0.06) and three control groups; negative (saline) and positive chlorhexidine gel and Ca(OH)2. Quantitative measurements of fungal activity by XTT colorimetric assay and qualitative measurements using confocal laser microscopy and scanning electron microscopy were performed. RESULTS The cell viability of C. albicans in the experimental groups was significantly reduced compared to the negative control group. The combination of (AgNPs (0.04%) and Ca(OH)2) was the most potent against C. albicans. CONCLUSIONS The findings demonstrated that combining silver nanoparticles with Ca(OH)2 was more effective against C. albicans biofilm compared to Ca(OH)2 alone, suggesting a combing effect.
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Affiliation(s)
- Maha Alghofaily
- Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11461, Saudi Arabia;
| | - Jood Alfraih
- College of Dentistry, King Saud University, Riyadh 11461, Saudi Arabia; (J.A.); (N.A.)
| | - Aljohara Alsaud
- College of Dentistry, King Saud University, Riyadh 11461, Saudi Arabia; (J.A.); (N.A.)
| | - Norah Almazrua
- College of Dentistry, King Saud University, Riyadh 11461, Saudi Arabia; (J.A.); (N.A.)
| | - Terrence S. Sumague
- Molecular and Cell Biology Laboratory, Prince Naif Bin AbdulAziz Health Research Center, College of Dentistry, King Saud University, Riyadh 11461, Saudi Arabia;
| | - Sayed H. Auda
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11461, Saudi Arabia;
| | - Fahd Alsalleeh
- Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11461, Saudi Arabia;
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Sahebi S, Mofidi H, Abbaszadegan A, Gholami A, Eskandari F. The effect of nanobased irrigants on the root canal dentin microhardness: an ex-vivo study. BMC Oral Health 2023; 23:581. [PMID: 37598165 PMCID: PMC10440035 DOI: 10.1186/s12903-023-03298-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: 02/25/2023] [Accepted: 08/10/2023] [Indexed: 08/21/2023] Open
Abstract
BACKGROUND Given the favorable antimicrobial properties of zinc oxide (ZnONPs), standard silver (AgNPs), and imidazolium-based silver (Im-AgNPs) nanoparticles, this study aimed to evaluate their influence on the microhardness of root canal dentin. METHODS In this experimental study, 40 mandibular premolars were decoronated at the cementoenamel junction and longitudinally sectioned into halves to create 80 specimens. They were randomly allocated to 5 groups (n = 16) and irrigated with ZnONPs, AgNPs, Im-AgNPs, NaOCl, or normal saline (as the negative control) for 15 min. The Vickers Hardness Number (VHN) was measured on each root canal third before and after being soaked in irrigants. Statistical analysis was performed using paired t-test, one-way ANOVA, and post hoc Tukey's test (α = 0.05). RESULTS Im-AgNPs and ZnONPs irrigants improved the microhardness of root dentin, whereas, AgNPs and NaOCl decreased it. ZnONPs yielded the highest VHN at the coronal third (P˂0.001), while the Im-AgNPs provided the highest VHN at the middle and apical thirds (P˂0.001). The AgNPs group showed the lowest VHN at the apical third. CONCLUSIONS The irrigants containing Im-AgNPs and ZnONPs significantly enhanced the root dentin microhardness. However, the use of AgNPs resulted in decreased microhardness.
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Affiliation(s)
- Safoora Sahebi
- Department of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Hossein Mofidi
- Endodontist, Department of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abbas Abbaszadegan
- Department of Endodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Ahmad Gholami
- Biotechnology Research Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.
| | - Fateme Eskandari
- School of Dentistry, Shiraz University of Medical Sciences, Ghasrdasht Street, Shiraz, 71956-15878, Iran.
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Glowacka-Sobotta A, Ziental D, Czarczynska-Goslinska B, Michalak M, Wysocki M, Güzel E, Sobotta L. Nanotechnology for Dentistry: Prospects and Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2130. [PMID: 37513141 PMCID: PMC10383982 DOI: 10.3390/nano13142130] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
In the XXI century, application of nanostructures in oral medicine has become common. In oral medicine, using nanostructures for the treatment of dental caries constitutes a great challenge. There are extensive studies on the implementation of nanomaterials to dental composites in order to improve their properties, e.g., their adhesive strength. Moreover, nanostructures are helpful in dental implant applications as well as in maxillofacial surgery for accelerated healing, promoting osseointegration, and others. Dental personal care products are an important part of oral medicine where nanomaterials are increasingly used, e.g., toothpaste for hypersensitivity. Nowadays, nanoparticles such as macrocycles are used in different formulations for early cancer diagnosis in the oral area. Cancer of the oral cavity-human squamous carcinoma-is the sixth leading cause of death. Detection in the early stage offers the best chance at total cure. Along with diagnosis, macrocycles are used for photodynamic mechanism-based treatments, which possess many advantages, such as protecting healthy tissues and producing good cosmetic results. Application of nanostructures in medicine carries potential risks, like long-term influence of toxicity on body, which need to be studied further. The introduction and development of nanotechnologies and nanomaterials are no longer part of a hypothetical future, but an increasingly important element of today's medicine.
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Affiliation(s)
- Arleta Glowacka-Sobotta
- Chair and Department of Orthodontics and Temporomandibular Disorders, Poznan University of Medical Sciences, Bukowska 70, 60-812 Poznan, Poland
| | - Daniel Ziental
- Chair and Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Beata Czarczynska-Goslinska
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Maciej Michalak
- Chair and Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Marcin Wysocki
- Chair and Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Emre Güzel
- Department of Engineering Fundamental Sciences, Sakarya University of Applied Sciences, 54050 Sakarya, Türkiye
- Biomedical Technologies Application and Research Center (BIYOTAM), Sakarya University of Applied Sciences, 54050 Sakarya, Türkiye
| | - Lukasz Sobotta
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
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Wylie ME, Parashos P, Fernando JR, Palamara J, Sloan AJ. Biological considerations of dental materials as orifice barriers for restoring root-filled teeth. Aust Dent J 2023; 68 Suppl 1:S82-S95. [PMID: 37607102 DOI: 10.1111/adj.12970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2023] [Indexed: 08/24/2023]
Abstract
There is ample published literature regarding the technical aspects of restoring root-filled teeth, but little concerning the biological impacts, consequences, and criteria for the selection of direct restorative materials following endodontic treatment. The provision of an effective coronal seal in addition to a sound root filling is known to be important in the prevention of root canal infection. This review seeks to explore the evidence concerning the selection of dental materials in the restoration of root-filled teeth, specifically with a close examination of the properties of commonly used materials as orifice barriers. © 2023 Australian Dental Association.
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Affiliation(s)
- M E Wylie
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - P Parashos
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - J R Fernando
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
- Centre for Oral Health Research, Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Jea Palamara
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - A J Sloan
- Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
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Silver Nanoparticles and Their Therapeutic Applications in Endodontics: A Narrative Review. Pharmaceutics 2023; 15:pharmaceutics15030715. [PMID: 36986576 PMCID: PMC10052550 DOI: 10.3390/pharmaceutics15030715] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 02/25/2023] Open
Abstract
The efficient elimination of microorganisms and their byproducts from infected root canals is compromised by the limitations in conventional root canal disinfection strategies and antimicrobials. Silver nanoparticles (AgNPs) are advantageous for root canal disinfection, mainly due to their wide-spectrum anti-microbial activity. Compared to other commonly used nanoparticulate antibacterials, AgNPs have acceptable antibacterial properties and relatively low cytotoxicity. Owing to their nano-scale, AgNPs penetrate deeper into the complexities of the root canal systems and dentinal tubules, as well as enhancing the antibacterial properties of endodontic irrigants and sealers. AgNPs gradually increase the dentin hardness in endodontically treated teeth and promote antibacterial properties when used as a carrier for intracanal medication. The unique properties of AgNPs make them an ideal additive for different endodontic biomaterials. However, the possible side effects of AgNPs, such as cytotoxicity and tooth discoloration potential, merits further research.
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Rücker VB, Balbinot GDS, Collares FM, de Araújo Neto VG, Giannini M, Leitune VCB. Synthesis of silver core-shell nanoparticles and their influence on an experimental resin endodontic sealer: An in vitro analysis. Int Endod J 2023; 56:289-303. [PMID: 36314859 DOI: 10.1111/iej.13859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/29/2022] [Accepted: 10/26/2022] [Indexed: 11/05/2022]
Abstract
AIM To avoid root canal recontamination and endodontic treatment failure, endodontic sealers with antibacterial activity could be an alternative. Silver nanoparticles have antibacterial activity and this study aimed to synthesize Ag@SiO2 nanoparticles, incorporate them into an experimental endodontic resin sealer and evaluate their influence on physicochemical and biological properties. METHODOLOGY Ag@SiO2 nanoparticles were produced using the sol-gel process, based on the Stöber method. The particles were characterized in terms of their chemical structure by Fourier transform-infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), UV-Vis spectral analysis, scanning electron microscopy, and transmission electron microscopy, where the particle morphology and diameter were analysed. A dual-cured experimental endodontic resin sealer was formulated using 70 wt% UDMA, 15 wt% GDMA, and 15 wt% BisEMA. The photoinitiators were added separately in two pastes. The Ag@SiO2 nanoparticles were incorporated into the endodontic sealer at the concentrations of 2.5 wt%, 5 wt%, and 10 wt%, and a control group without nanoparticles was also formulated. The endodontic sealers were evaluated for their flow, film thickness, degree of conversion, softening in solvent, radiopacity, cytotoxicity and antibacterial activity immediately and after 9 months in water storage. RESULTS Silver was detected in the chemical characterization of Ag@SiO2 that presented a spheric regular shape and average 683.51 nm ± 93.58 diameter. Sealers presented adequate flow and film thickness while radiopacity values were below the ones required by ISO 6876. All groups underwent softening after immersion in a solvent. The 10 wt% groups showed a higher loss of subsurface hardness (∆KHN%). No reduction in cell viability was observed. Enterococcus faecalis viability in biofilm was reduced in 10 wt% groups after 24 h and 9 months. CONCLUSION The addition of 10 wt% Ag@SiO2 reduced E. faecalis viability at immediate and longitudinal analysis while maintaining the physicochemical properties of developed sealers.
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Affiliation(s)
- Victória Britz Rücker
- Dental Materials Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Gabriela de Souza Balbinot
- Dental Materials Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Fabrício Mezzomo Collares
- Dental Materials Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Vitaliano Gomes de Araújo Neto
- Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas, Brazil
| | - Marcelo Giannini
- Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Campinas, Brazil
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Cui H, You Y, Cheng GW, Lan Z, Zou KL, Mai QY, Han YH, Chen H, Zhao YY, Yu GT. Advanced materials and technologies for oral diseases. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2156257. [PMID: 36632346 PMCID: PMC9828859 DOI: 10.1080/14686996.2022.2156257] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/15/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Oral disease, as a class of diseases with very high morbidity, brings great physical and mental damage to people worldwide. The increasing burden and strain on individuals and society make oral diseases an urgent global health problem. Since the treatment of almost all oral diseases relies on materials, the rapid development of advanced materials and technologies has also promoted innovations in the treatment methods and strategies of oral diseases. In this review, we systematically summarized the application strategies in advanced materials and technologies for oral diseases according to the etiology of the diseases and the comparison of new and old materials. Finally, the challenges and directions of future development for advanced materials and technologies in the treatment of oral diseases were refined. This review will guide the fundamental research and clinical translation of oral diseases for practitioners of oral medicine.
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Affiliation(s)
- Hao Cui
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yan You
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Guo-Wang Cheng
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhou Lan
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Ke-Long Zou
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Qiu-Ying Mai
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yan-Hua Han
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hao Chen
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yu-Yue Zhao
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Guang-Tao Yu
- Stomatological Hospital, Southern Medical University, Guangzhou, China
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Silver Nanoparticles Alone or in Combination with Calcium Hydroxide Modulate the Viability, Attachment, Migration, and Osteogenic Differentiation of Human Mesenchymal Stem Cells. Int J Mol Sci 2022; 24:ijms24010702. [PMID: 36614148 PMCID: PMC9821315 DOI: 10.3390/ijms24010702] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 12/18/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
This study aimed to evaluate the effect of silver nanoparticles (AgNPs) alone or in combination with calcium hydroxide (Ca(OH)2) on the proliferation, viability, attachment, migration, and osteogenic differentiation of human mesenchymal stem cells (hMSCs). Different concentrations of AgNPs alone or mixed with Ca(OH)2 were prepared. Cell proliferation was measured using AlamarBlue, and hMSCs attachment to dentin disks was evaluated using scanning electron microscopy. Live-dead imaging was performed to assess apoptosis. Wound healing ability was determined using the scratch-migration assay. To evaluate osteogenic differentiation, the expression of Runt-related transcription factor (RUNX2), Transforming growth factor beta-1 (TGF-β1), Alkaline Phosphatase (ALP), and Osteocalcin (OCN) were measured using real-time reverse transcriptase polymerase chain reaction. ALP staining and activity were also performed as indicators of osteogenic differentiation. AgNPs alone seemed to favor cell attachment. Lower concentrations of AgNPs enhanced cell proliferation. AgNP groups showed markedly less apoptosis. None of the medicaments had adverse effects on wound closure. The expression of TGF-β1 was significantly upregulated in all groups, and OCN was highly expressed in the AgNP groups. AgNPs 0.06% showed the most enhanced ALP gene expression levels, activity, and marked cytochemical staining. In conclusion, AgNPs positively affect hMSCs, making them a potential biomaterial for various clinical applications.
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Jiang J, Sun J, Huang Z, Bi Z, Yu G, Yang J, Wang Y. The state of the art and future trends of root canal files from the perspective of patent analysis: a study design. Biomed Eng Online 2022; 21:90. [PMID: 36566212 PMCID: PMC9789667 DOI: 10.1186/s12938-022-01060-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 12/14/2022] [Indexed: 12/25/2022] Open
Abstract
The goal of this review is to present a detailed and comprehensive description of the published work from the past decade regarding methods of improved material, geometric design, and additional functions in root canal files. The main improved methods of files and the most common technologies were further addressed, underlining their advantages and main limitations. Online databases (the Derwent Innovations Index) were consulted on this topic. Published work from 2010 to 2022 was collected and analyzed the relevant papers were chosen for inclusion in this review. The patent map classified the latest phase of the root canal files based on the analysis of the number of patents. The performance of the root canal files, such as materials. Directly affects the quality of the root canal therapy. We provided a thorough review of advances in the field of root canal files. In particular, three categories of improved methods were examined and compared, including material-based methods, geometry-based methods, and those based on additional functions. To understand this state of the art of different improved methods of root canal files, we conducted a literature analysis and a series of comparisons between different methods. The features and limitations of each method of root canal files were further discussed. Finally, we identified promising research directions in advancing the methods for the improved performance of root canal files. There is no perfect technology for all material/geometric design/additional functions, capable alone of fulfilling all the specificity and necessities of every patient. Although it is very promising, the material of the files remains understudied, and further work is required to make material science a pervasive technology in root canal therapy, and contribute to endodontic and periapical diseases by assisting in the subsequent development of root canal files.
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Affiliation(s)
- Jingang Jiang
- grid.411994.00000 0000 8621 1394Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080 Heilongjiang People’s Republic of China ,grid.19373.3f0000 0001 0193 3564State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001 Heilongjiang People’s Republic of China
| | - Jianpeng Sun
- grid.411994.00000 0000 8621 1394Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080 Heilongjiang People’s Republic of China
| | - Zhiyuan Huang
- grid.19373.3f0000 0001 0193 3564State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001 Heilongjiang People’s Republic of China
| | - Zhuming Bi
- grid.503846.c0000 0000 8951 1659Department of Civil and Mechanical Engineering, Purdue University Fort Wayne, West Lafayette, 46805 USA
| | - Guang Yu
- grid.12527.330000 0001 0662 3178Department of Mechanical Engineering, Tsinghua University, Beijing, 100084 People’s Republic of China
| | - Jingwen Yang
- grid.11135.370000 0001 2256 9319National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School of Stomatology, Beijing, 100081 People’s Republic of China ,grid.11135.370000 0001 2256 9319Peking University School of Stomatology, Beijing, 100081 People’s Republic of China
| | - Yong Wang
- grid.11135.370000 0001 2256 9319National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School of Stomatology, Beijing, 100081 People’s Republic of China ,grid.11135.370000 0001 2256 9319Peking University School of Stomatology, Beijing, 100081 People’s Republic of China
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Tan L, Liu Q, Chen Y, Zhao YQ, Zhao J, Dusenge MA, Feng Y, Ye Q, Hu J, Ou-Yang ZY, Zhou YH, Guo Y, Feng YZ. Comparison of sealer penetration of sonic activation versus conventional needle irrigation: a systematic review and meta-analysis of randomized controlled trials. BMC Oral Health 2022; 22:566. [PMID: 36463149 PMCID: PMC9719620 DOI: 10.1186/s12903-022-02608-1] [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] [Received: 08/03/2022] [Accepted: 11/21/2022] [Indexed: 12/07/2022] Open
Abstract
BACKGROUND Most existing studies comparing the efficiency of sonic irrigation (SI) and conventional needle irrigation (CNI) in increasing the penetration of sealers into dentine tubules are controversial; and this study aimed to determine whether the use of SI can lead to greater sealing ability than CNI, during the root canal treatment. METHODS The EMBASE, PubMed, and Cochrane Library databases were used to find confocal laser scanning microscopy studies evaluating percentage and maximum depth of sealer penetration following the use of SI or CNI in mature permanent teeth until October 2022. The critical estimative checklist of randomized controlled trials of the standardized Joanna Briggs Institute was adopted to independently score the quality of each study. The random-effect model for meta-analysis was used to analyse for each canal segment (apical, middle, coronal). The results are shown in the forest plots as weighted mean differences (WMDs) with 95% confidence intervals (95% CIs). RESULTS Ninety-seven articles were included in the preliminary screening, and nine of them were included in this study. Eight studies were included in the meta-analysis.The meta-analysis exhibited great increases in the coronal (WMD: 8.09, 95% CI 2.78-13.40/WMD: 165.32, 95% CI 128.85-201.80), and middle segments (WMD: 8.81, 95% CI 5.76-11.87/WMD: 132.98, 95% CI 68.71-197.25) for the percentage and maximum depth of sealer penetration, respectively. The percentage of sealer penetration in the apical thirds region was nonsignificant (WMD: 4.73, 95% CI - 2.34-11.80). However, the maximum depth of sealer penetration in the apical thirds region was significant (WMD: 121.46, 95% CI 86.55-156.38). Chi-squared analysis revealed heterogeneity scores of 0.0-70.0% and 44.0-90.0% for the percentage and maximum depth of sealer penetration, respectively. DISCUSSION This review verified that SI significantly improves tubular dentin sealer penetration in most areas of the root canal; thus, SI may lead to better filling efficiency and anti-reinfection effects than CNI during and after the root canal therapy. Nevertheless, a large heterogeneity in the current data comparing the irrigation efficiency of SI versus CNI in the apical third of the root canal was found, implying the necessity to standardize root canal irrigation procedures and obtain more accurate results in this area. TRIAL REGISTRATION INPLASY database (INPLASY202270116).
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Affiliation(s)
- Li Tan
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Qiong Liu
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Yun Chen
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Ya-Qiong Zhao
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Jie Zhao
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Marie Aimee Dusenge
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Yao Feng
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Qin Ye
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Jing Hu
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Ze-Yue Ou-Yang
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Ying-Hui Zhou
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China ,grid.452708.c0000 0004 1803 0208National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, 410011 Hunan China
| | - Yue Guo
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Yun-Zhi Feng
- grid.452708.c0000 0004 1803 0208Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
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Saavedra FM, Pelepenko LE, Boyle WS, Zhang A, Staley C, Herzberg MC, Marciano MA, Lima BP. In vitro physicochemical characterization of five root canal sealers and their influence on an ex vivo oral multi-species biofilm community. Int Endod J 2022; 55:772-783. [PMID: 35383959 PMCID: PMC9321831 DOI: 10.1111/iej.13742] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 03/14/2022] [Accepted: 03/30/2022] [Indexed: 11/29/2022]
Abstract
AIM To evaluate the physicochemical properties of five root canal sealers and assess their effect on an ex vivo dental plaque-derived polymicrobial community. METHODOLOGY Dental plaque-derived microbial communities were exposed to the sealers (AH Plus [AHP], GuttaFlow Bioseal [GFB], Endoseal MTA [ESM], Bio-C sealer [BCS] and BioRoot RCS [BRR]) for 3, 6 and 18 h. The sealers' effect on the biofilm biomass and metabolic activity was quantified using crystal violet (CV) staining and MTT assay, respectively. Biofilm community composition and morphology were assessed by denaturing gradient gel electrophoresis (DGGE), 16S rRNA sequencing and scanning electron microscopy. The ISO6876:2012 specifications were followed to determine the setting time, radiopacity, flowability and solubility. Obturated acrylic teeth were used to assess the sealers' effect on pH. Surface chemical characterization was performed using SEM with coupled energy-dispersive spectroscopy. Data normality was assessed using the Shapiro-Wilk test. One-way anova and Tukey's tests were used to analyze data from setting time, radiopacity, flowability and solubility. Two-way anova and Dunnett's tests were used for the data analysis from CV, MTT and pH. 16S rRNA sequencing data were analyzed for alpha (Shannon index and Chao analysis) and beta diversity (Bray-Curtis dissimilarities). Differences in community composition were evaluated by analysis of similarity (p < .05). RESULTS The sealers significantly influenced microbial community composition and morphology. All sealers complied with ISO6876:2012 requirements for setting time, radiopacity and flowability. Although only AHP effectively reduced the biofilm biomass, all sealers, except BRR, reduced biofilm metabolic activity. CONCLUSION Despite adequate physical properties, none of the sealers tested prevented biofilm growth. Significant changes in community composition were observed. If observed in vivo, these changes could affect intracanal microbial survival, pathogenicity and treatment outcomes.
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Affiliation(s)
- Flavia M. Saavedra
- Department of Restorative DentistrySchool of Dentistry of PiracicabaState University of CampinasPiracicabaBrazil
- Department of Diagnostic and Biological SciencesSchool of DentistryUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Lauter E. Pelepenko
- Department of Restorative DentistrySchool of Dentistry of PiracicabaState University of CampinasPiracicabaBrazil
| | - William S. Boyle
- Department of Diagnostic and Biological SciencesSchool of DentistryUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Anqi Zhang
- Minnesota Dental Research Center for Biomaterials and Biomechanics (MDRCBB)School of DentistryUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Christopher Staley
- Division of Basic & Translational ResearchDepartment of SurgeryUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Mark C. Herzberg
- Department of Diagnostic and Biological SciencesSchool of DentistryUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Marina A. Marciano
- Department of Restorative DentistrySchool of Dentistry of PiracicabaState University of CampinasPiracicabaBrazil
| | - Bruno P. Lima
- Department of Diagnostic and Biological SciencesSchool of DentistryUniversity of MinnesotaMinneapolisMinnesotaUSA
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15
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Bosaid F, Aksel H, Azim AA. Influence of acidic pH on antimicrobial activity of different calcium silicate based-endodontic sealers. Clin Oral Investig 2022; 26:5369-5376. [PMID: 35511289 DOI: 10.1007/s00784-022-04504-y] [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: 11/18/2021] [Accepted: 04/14/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To investigate the antibacterial activity of calcium silicate-based sealers (CSBSs) against Enterococcus faecalis biofilm in a neutral or acidic condition. MATERIALS AND METHODS Dentin cylinders (4 mm length) were prepared and infected with 3-week-old E. faecalis. The samples were filled with BioRoot RCS (BR), EndoSequence BC (ES), and NeoMTA Plus (NMTA) and incubated in either neutral or acidic conditions for 7 days (n=10/group). Sterile or infected samples alone were used as the positive and negative control. The root canal sealers were removed after 7 days, and the remaining bacteria on dentinal walls were determined by colony-forming units (CFUs/ml), and three samples from each group were visualized under a confocal laser scanning microscope (CLSM). The pH was also measured (n=3/group) after 4 h and 7 days of incubation at 37°C in both conditions. RESULTS In the neutral condition, all sealers significantly decreased the log-CFU values (p<0.05), while in the acidic condition, the log-CFU reduction was less for ES and NMTA, but a higher reduction was observed in BR (p<0.05). The antibacterial activity of CSBSs was similar in neutral conditions (p>0.05), and BR showed a greater antibacterial effect than ES and NMTA in the acidic condition (p<0.05). The pH of BR, ES, and NMTA ranged from 8.2 to 8.8 in the neutral condition in the presence of dentin after 7 days. However, acidic conditions reduced the pH values to 7.8 for BR, 6.0 for ES, and 5.8 for NMTA. CONCLUSIONS All CSBSs showed similar antibacterial activity in neutral conditions, while acidic pH had a reducing antibacterial effect on CSBSs. CLINICAL RELEVANCE Inflammatory pH decreased the antibacterial properties of CSBSs depending on the sealer type.
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Affiliation(s)
- Fatima Bosaid
- Department of Periodontics and Endodontics, School of Dental Medicine, University at Buffalo, 240 Squire Hall, Buffalo, NY, 14214, USA
| | - Hacer Aksel
- Department of Periodontics and Endodontics, School of Dental Medicine, University at Buffalo, 240 Squire Hall, Buffalo, NY, 14214, USA.
| | - Adham A Azim
- Department of Periodontics and Endodontics, School of Dental Medicine, University at Buffalo, 240 Squire Hall, Buffalo, NY, 14214, USA. .,Department of Endodontics, University of the Pacific Arthur A. Dugoni School of Dentistry, 155 5th St, San Francisco, CA, 94103, USA.
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16
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Mai S, Zhang Q, Liao M, Ma X, Zhong Y. Recent Advances in Direct Adhesive Restoration Resin-Based Dental Materials With Remineralizing Agents. FRONTIERS IN DENTAL MEDICINE 2022. [DOI: 10.3389/fdmed.2022.868651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Resin-based dental materials are popular restorative materials especially in direct adhesive restoration because of the excellent mechanical and esthetic properties. Toward the realization of minimally invasive dental procedures, direct composite resin adhesive restoration has become the main treatment for dental defects. In addition, for caries-affected dentin close to the pulp, conservation remineralization has been advocated to save the living pulp. However, the resin–dentin interface can be destabilized by various factors, especially the enzymatic degradation of collagen fibrils within the hybrid layer and polymer hydrolysis. Furthermore, for resin-based restorative materials, the marginal gap remains a major problem that can lead to the occurrence of secondary caries. To address these issues, research efforts have focused on the remineralization of mineral-depleted dental hard tissues using remineralizing bioactive substances. In this review, we first described various bioactive agents with remineralizing properties. Furthermore, we discussed recent advances in resin-based dental materials for enamel or dentin remineralization. Finally, we examined the current challenges and prospects of these emerging materials. This work aims to provide a theoretical foundation for the future development of resin-based dental materials in direct adhesive restoration with remineralizing agents.
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17
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Denture Acrylic Resin Material with Antibacterial and Protein-Repelling Properties for the Prevention of Denture Stomatitis. Polymers (Basel) 2022; 14:polym14020230. [PMID: 35054637 PMCID: PMC8777866 DOI: 10.3390/polym14020230] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 02/04/2023] Open
Abstract
Denture stomatitis is a multifactorial pathological condition of the oral mucosa that affects up to 72% of denture wearers. It is commonly seen on the palatal mucosa and characterized by erythema on the oral mucosa that are in contact with the denture surface. The aim of this study was to incorporate 2-methacryloyloxyethyl phosphorylcholine (MPC) and dimethylaminohexadecyl methacrylate (DMAHDM) into a high impact polymethylmethacrylate heat-cured denture base acrylic resin as a potential treatment for denture stomatitis. We used a comparative study design to examine the effect of incorporating MPC as a protein repellent agent and DMAHDM as an antifungal agent to prevent the adherence of Candida albicans to the denture base material. The dual incorporation of MPC and DMAHDM reduced C. albicans biofilm colony-forming unit by two orders of magnitude when compared to the control group devoid of the bioactive agents. Although the addition of MPC and DMAHDM alone or in combination significantly reduced the flexural strength of the material, they showed reduced roughness values when compared to control groups. This new denture acrylic resin provides the benefit of enhancing C. albicans biofilm elimination through dual mechanisms of action, which could potentially reduce the prevalence of denture stomatitis.
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18
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Albeshir EG, Balhaddad AA, Mitwalli H, Wang X, Sun J, Melo MAS, Weir MD, Xu HHK. Minimally-invasive dentistry via dual-function novel bioactive low-shrinkage-stress flowable nanocomposites. Dent Mater 2021; 38:409-420. [PMID: 34973816 DOI: 10.1016/j.dental.2021.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/28/2021] [Accepted: 12/15/2021] [Indexed: 01/05/2023]
Abstract
The objectives of this in vitro study were to develop a novel low-shrinkage-stress flowable nanocomposite with antibacterial properties through the incorporation of dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP), and investigate the mechanical and oral biofilm properties, to be used in minimally-invasive techniques. METHODS The light-cured low-shrinkage-stress flowable resin was formulated by mixing urethane dimethacrylate (UDMA) and triethylene glycol divinylbenzyl ether (TEG-DVBE) at a 1:1 mass ratio. Different mass fractions of glass, and either 5% DMAHDM or 20%NACP or both were incorporated. Paste flowability, ultimate micro tensile strength and surface roughness were evaluated. The antibacterial response of DMAHDM resin was assessed by using biofilms of human saliva-derived microcosm model. Virtuoso flowable composite was used as a control. RESULTS (45% resin+5% DMAHDM+20% NACP+30% glass) formula yielded the needed outcomes. It had flow rate within the range of ISO requirement. The micro tensile strength was (39.1 ± 4.3) MPa, similar to (40.1 ± 4.0) MPa for commercial control (p > 0.05). The surface roughness values of the novel composite (0.079 ± 0.01) µm similar to commercial composite (0.09 ± 0.02) µm (p > 0.05). Salivary microcosm biofilm colony forming unit values were reduced by 5-6 logs (p < 0.05). Biofilm metabolic activity was also substantially reduced, compared to control composite (p < 0.05). SIGNIFICANCE The novel bioactive flowable nanocomposite achieved strong antibacterial activities without compromising the mechanical properties. It is promising to be used as pit and fissure sealants, and as fillings in conservative cavities to inhibit recurrent caries and increase restoration longevity.
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Affiliation(s)
- Ebtehal G Albeshir
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dentistry, King Abdul-Aziz Medical City, Riyadh 11426, Saudi Arabia.
| | - Abdulrahman A Balhaddad
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam 31441, Saudi Arabia.
| | - Heba Mitwalli
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Xiaohong Wang
- Volpe Research Center, American Dental Association Foundation, Frederick, MD 21704, USA
| | - Jirun Sun
- The Forsyth Institute, A Harvard School of Dental Medicine Affiliate, 245 First Street, Cambridge, MA 02142, USA.
| | - Mary Ann S Melo
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA.
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA.
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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Fu F, Li X, Zheng T, Xia X, Du M, Huang Z, Huang Y, Pan X, Wu C. Stability Evaluation of Lyotropic Liquid Crystalline Precursor for the Co-delivery of Chlorhexidine and Silver Nanoparticles. AAPS PharmSciTech 2021; 22:237. [PMID: 34545436 DOI: 10.1208/s12249-021-02102-x] [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: 05/07/2021] [Accepted: 07/20/2021] [Indexed: 11/30/2022] Open
Abstract
Sealing the therapeutic agents in the root canal is considered to be an essential step in root canal therapy. The lyotropic liquid crystalline precursor (LLCP) incorporated with chlorhexidine (CHX) and silver nanoparticles (Ag-NPs) has been confirmed as a promising candidate for root canal therapy in the previous study. Importantly, the stability of the LLCP system was a significant determinant for its therapeutic effect and further application. The objective of this study was to comprehensively investigate the stability of the LLCP incorporated with CHX and Ag-NPs. The oil-water partition coefficient of CHX and Ag-NPs was measured. The water absorption and the physical stability of drug-loaded LLCP solution were studied. Stability under high temperature, high humidity, and strong light irradiation was also investigated. The results demonstrated that CHX and Ag-NPs could be entrapped in the water channel of LLCP, indicating the low tendency of drugs leakage. The drug-loaded LLCP was a pseudoplastic fluid and it showed an excellent physical stability with a sedimentation rate of 0.981 and a settling time of 26~28 h. The payload of LLCP was confirmed to weaken the water absorption behavior, which facilitated its transformation to cubic liquid crystal. The stress testing under high temperature, high humidity, and strong light irradiation also manifested that the LLCP was stable when stored under moisture-proof condition. In conclusion, the developed LLCP incorporated with CHX and Ag-NPs was highly stable during storage and qualified for further application.
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20
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Nanomaterials Application in Endodontics. MATERIALS 2021; 14:ma14185296. [PMID: 34576522 PMCID: PMC8464804 DOI: 10.3390/ma14185296] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/21/2021] [Accepted: 09/09/2021] [Indexed: 12/11/2022]
Abstract
In recent years, nanomaterials have become increasingly present in medicine, especially in dentistry. Their characteristics are proving to be very useful in clinical cases. Due to the intense research in the field of biomaterials and nanotechnology, the efficacy and possibilities of dental procedures have immensely expanded over the years. The nano size of materials allows them to exhibit properties not present in their larger-in-scale counterparts. The medical procedures in endodontics are time-consuming and mostly require several visits to be able to achieve the proper result. In this field of dentistry, there are still major issues about the removal of the mostly bacterial infection from the dental root canals. It has been confirmed that nanoparticles are much more efficient than traditional materials and appear to have superior properties when it comes to surface chemistry and bonding. Their unique antibacterial properties are also promising features in every medical procedure, especially in endodontics. High versatility of use of nanomaterials makes them a powerful tool in dental clinics, in a plethora of endodontic procedures, including pulp regeneration, drug delivery, root repair, disinfection, obturation and canal filling. This study focuses on summing up the current knowledge about the utility of nanomaterials in endodontics, their characteristics, advantages, disadvantages, and provides a number of reasons why research in this field should be continued.
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21
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Cao H, Qin H, Li Y, Jandt KD. The Action-Networks of Nanosilver: Bridging the Gap between Material and Biology. Adv Healthc Mater 2021; 10:e2100619. [PMID: 34309242 DOI: 10.1002/adhm.202100619] [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: 03/31/2021] [Revised: 06/03/2021] [Indexed: 01/06/2023]
Abstract
The emergence of nanosilver (silver in nanoscale shapes and their assemblies) benefits the landscape of modern healthcare; however, this brings about concerns over its safety issues associated with an ultrasmall size and high mobility. By reviewing previous reporting details about the synthesis and characterization of nanosilver and its biological responses, a gap between materials synthesis and their biomedical uses is characterized by the insufficient understanding of the interacting and interplaying nanoscale actions of silver. To improve reporting quality and advance clinical translations, it is suggested that researchers have a comprehensive recognition of the "Indications for use" before designing innovative nanosilver-based materials and an "Action-network" concept addressing the acting range and strength of those nanoscale actions is implemented. Although this discussion is specific to nanosilver, the idea of "Indications for use" centered design and synthesis is generally applicable to other biomedical nanomaterials.
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Affiliation(s)
- Huiliang Cao
- Lab of Low‐Dimensional Materials Chemistry Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and Technology Shanghai 200237 China
- Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
- Chair of Materials Science Otto Schott Institute of Materials Research Friedrich Schiller University Jena Jena 07743 Germany
| | - Hui Qin
- Department of Orthopaedics Shanghai Jiaotong University Affiliated Sixth People's Hospital Shanghai 200233 China
| | - Yongsheng Li
- Lab of Low‐Dimensional Materials Chemistry Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and Technology Shanghai 200237 China
- Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Klaus D. Jandt
- Chair of Materials Science Otto Schott Institute of Materials Research Friedrich Schiller University Jena Jena 07743 Germany
- Jena Center for Soft Matter (JCSM) Friedrich Schiller University Jena Jena 07743 Germany
- Jena School for Microbial Communication (JSMC) Neugasse 23 Jena 07743 Germany
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Nanoparticles in Dentistry: A Comprehensive Review. Pharmaceuticals (Basel) 2021; 14:ph14080752. [PMID: 34451849 PMCID: PMC8398506 DOI: 10.3390/ph14080752] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 02/07/2023] Open
Abstract
In recent years, nanoparticles (NPs) have been receiving more attention in dentistry. Their advantageous physicochemical and biological properties can improve the diagnosis, prevention, and treatment of numerous oral diseases, including dental caries, periodontal diseases, pulp and periapical lesions, oral candidiasis, denture stomatitis, hyposalivation, and head, neck, and oral cancer. NPs can also enhance the mechanical and microbiological properties of dental prostheses and implants and can be used to improve drug delivery through the oral mucosa. This paper reviewed studies from 2015 to 2020 and summarized the potential applications of different types of NPs in the many fields of dentistry.
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Makvandi P, Josic U, Delfi M, Pinelli F, Jahed V, Kaya E, Ashrafizadeh M, Zarepour A, Rossi F, Zarrabi A, Agarwal T, Zare EN, Ghomi M, Kumar Maiti T, Breschi L, Tay FR. Drug Delivery (Nano)Platforms for Oral and Dental Applications: Tissue Regeneration, Infection Control, and Cancer Management. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004014. [PMID: 33898183 PMCID: PMC8061367 DOI: 10.1002/advs.202004014] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/12/2020] [Indexed: 05/09/2023]
Abstract
The oral cavity and oropharynx are complex environments that are susceptible to physical, chemical, and microbiological insults. They are also common sites for pathological and cancerous changes. The effectiveness of conventional locally-administered medications against diseases affecting these oral milieus may be compromised by constant salivary flow. For systemically-administered medications, drug resistance and adverse side-effects are issues that need to be resolved. New strategies for drug delivery have been investigated over the last decade to overcome these obstacles. Synthesis of nanoparticle-containing agents that promote healing represents a quantum leap in ensuring safe, efficient drug delivery to the affected tissues. Micro/nanoencapsulants with unique structures and properties function as more favorable drug-release platforms than conventional treatment approaches. The present review provides an overview of newly-developed nanocarriers and discusses their potential applications and limitations in various fields of dentistry and oral medicine.
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Affiliation(s)
- Pooyan Makvandi
- Chemistry Department, Faculty of ScienceShahid Chamran University of AhvazAhvaz6153753843Iran
| | - Uros Josic
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaVia San Vitale 59Bologna40125Italy
| | - Masoud Delfi
- Department of Chemical SciencesUniversity of Naples “Federico II”Complesso Universitario Monte S. Angelo, Via CintiaNaples80126Italy
| | - Filippo Pinelli
- Department of Chemistry, Materials and Chemical EngineeringPolitecnico di Milano Technical UniversityMilano20133Italy
| | - Vahid Jahed
- Biomedical Engineering Division, Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran
| | - Emine Kaya
- Faculty of DentistryIstanbul Okan UniversityTuzla CampusTuzlaIstanbul34959Turkey
| | - Milad Ashrafizadeh
- Faculty of Engineering and Natural SciencesSabanci UniversityOrta Mahalle, Üniversite Caddesi No. 27, OrhanlıTuzlaIstanbul34956Turkey
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Atefeh Zarepour
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical EngineeringPolitecnico di Milano Technical UniversityMilano20133Italy
| | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Tarun Agarwal
- Department of BiotechnologyIndian Institute of Technology KharagpurKharagpurWest Bengal721302India
| | | | - Matineh Ghomi
- Chemistry Department, Faculty of ScienceShahid Chamran University of AhvazAhvaz6153753843Iran
| | - Tapas Kumar Maiti
- Department of BiotechnologyIndian Institute of Technology KharagpurKharagpurWest Bengal721302India
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaVia San Vitale 59Bologna40125Italy
| | - Franklin R Tay
- The Dental College of GeorgiaAugusta University1430 John Wesley Gilbert DriveAugustaGA30192USA
- The Graduate SchoolAugusta UniversityAugustaGA30912USA
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Wong J, Zou T, Lee AHC, Zhang C. The Potential Translational Applications of Nanoparticles in Endodontics. Int J Nanomedicine 2021; 16:2087-2106. [PMID: 33727815 PMCID: PMC7955783 DOI: 10.2147/ijn.s293518] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/26/2021] [Indexed: 12/13/2022] Open
Abstract
Nanotechnology has substantially progressed in the past decades, giving rise to numerous possible applications in different biomedical fields. In particular, the use of nanoparticles in endodontics has generated significant interest due to their unique characteristics. As a result of their nanoscale dimensions, nanoparticles possess several properties that may enhance the treatment of endodontic infections, such as heightened antibacterial activity, increased reactivity and the capacity to be functionalized with other reactive compounds. Effective disinfection and sealing of the root canal system are the hallmarks for successful endodontic treatment. However, the presence of bacterial biofilms and resistance to endodontic disinfectants pose a significant challenge to this goal. This has encouraged the investigation of antibacterial nanoparticle-based irrigants and intracanal medicaments, which may improve the elimination of endodontic infections. In addition, photosynthesizer-functionalized nanoparticles could also serve as a worthy adjunct to root canal disinfection strategies. Furthermore, despite the myriad of commercially available options for endodontic obturation, the "ideal" material has yet to be conceived. This has led to the development of various experimental nanoparticle-incorporated obturation materials and sealers that exhibit a range of favourable physicochemical properties including enhanced antibacterial efficacy and bioactivity. Nanoparticle applications also show promise in the field of regenerative endodontics, such as supporting the release of bioactive molecules and enhancing the biophysical properties of scaffolds. Given the constantly growing body of research in this field, this article aims to present an overview of the current evidence pertaining to the potential translational applications of nanoparticles in endodontics.
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Affiliation(s)
- Jasmine Wong
- Restorative Dental Sciences (Endodontics), Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Ting Zou
- Restorative Dental Sciences (Endodontics), Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Angeline Hui Cheng Lee
- Restorative Dental Sciences (Endodontics), Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Chengfei Zhang
- Restorative Dental Sciences (Endodontics), Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region
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A comparative study of dentinal tubule penetration and the retreatability of EndoSequence BC Sealer HiFlow, iRoot SP, and AH Plus with different obturation techniques. Clin Oral Investig 2021; 25:4163-4173. [PMID: 33638051 PMCID: PMC8137581 DOI: 10.1007/s00784-020-03747-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/15/2020] [Indexed: 12/17/2022]
Abstract
Objectives This study aimed to evaluate dentinal tubule penetration and the retreatability of EndoSequence BC Sealer HiFlow (HiFlow), iRoot SP, and AH Plus when using the single-cone (SC) or continuous wave condensation (CWC) technique. Materials and methods Sixty-five single-rooted teeth were instrumented and randomly divided into 5 groups: group 1, AH Plus/CWC; group 2, iRoot SP/CWC; group 3, iRoot SP/SC; group 4, HiFlow/CWC; and group 5, HiFlow/SC. The ability to re-establish patency during endodontic retreatment was recorded, as was the time taken to reach the working length. Dentinal tubule penetration and remaining debris after retreatment were evaluated by confocal microscopy and scanning electron microscopy. Data were analyzed by Kruskal-Wallis test and Dunn’s multiple comparisons test (α = 0.05). Results The HiFlow/CWC and iRoot SP/CWC groups required more time to reach the working length than groups that underwent the SC technique regardless of the sealer used (P < .05). The HiFlow/CWC group showed a significantly higher percentage of sealer penetration area than that of the iRoot SP/SC at 4 mm from the apex (P < .05) and penetrated deeper into dentinal tubules than iRoot SP/SC at both 8-mm and 12-mm levels (P < .05). Moreover, the HiFlow/CWC and HiFlow/SC groups demonstrated less remaining sealer along the canal wall than AH Plus/CWC group at 4-mm level (P < .05). Conclusions HiFlow/CWC technique showed better performance in dentinal tubule penetration than that of iRoot SP/SC. Both HiFlow and iRoot SP combined with CWC technique groups required more retreatment time than the other groups. Furthermore, using HiFlow with either the CWC or SC technique left less remaining sealer at 4-mm level than using AH Plus with the CWC technique during retreatment. Clinical relevance With favorable performance in dentinal tubule penetration and retreatability in endodontic retreatment, the combined use of EndoSequence BC Sealer HiFlow with the recommended continuous wave condensation technique may be a worthwhile choice in root canal treatment.
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Gherasim O, Puiu RA, Bîrcă AC, Burdușel AC, Grumezescu AM. An Updated Review on Silver Nanoparticles in Biomedicine. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2318. [PMID: 33238486 PMCID: PMC7700255 DOI: 10.3390/nano10112318] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022]
Abstract
Silver nanoparticles (AgNPs) represent one of the most explored categories of nanomaterials for new and improved biomaterials and biotechnologies, with impressive use in the pharmaceutical and cosmetic industry, anti-infective therapy and wound care, food and the textile industry. Their extensive and versatile applicability relies on the genuine and easy-tunable properties of nanosilver, including remarkable physicochemical behavior, exceptional antimicrobial efficiency, anti-inflammatory action and antitumor activity. Besides commercially available and clinically safe AgNPs-based products, a substantial number of recent studies assessed the applicability of nanosilver as therapeutic agents in augmented and alternative strategies for cancer therapy, sensing and diagnosis platforms, restorative and regenerative biomaterials. Given the beneficial interactions of AgNPs with living structures and their nontoxic effects on healthy human cells, they represent an accurate candidate for various biomedical products. In the present review, the most important and recent applications of AgNPs in biomedical products and biomedicine are considered.
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Affiliation(s)
- Oana Gherasim
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Magurele, Romania
| | - Rebecca Alexandra Puiu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
| | - Alexandra-Cristina Burdușel
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (O.G.); (R.A.P.); (A.C.B.); (A.-C.B.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 90-92 Panduri Road, 050657 Bucharest, Romania
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Arias-Moliz MT, Baca P, Solana C, Toledano M, Medina-Castillo AL, Toledano-Osorio M, Osorio R. Doxycycline-functionalized polymeric nanoparticles inhibit Enterococcus faecalis biofilm formation on dentine. Int Endod J 2020; 54:413-426. [PMID: 33107032 DOI: 10.1111/iej.13436] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 12/24/2022]
Abstract
AIM To evaluate in a laboratory setting the antimicrobial properties and the potential to inhibit biofilm formation of novel remineralizing polymeric nanoparticles (NPs) when applied to dentine surfaces and to ascertain the effect of the functionalization of these NPs with zinc, calcium or doxycycline. METHODOLOGY The antimicrobial activity and inhibition of biofilm formation of polymeric NPs were analysed on human dentine blocks that were infected with Enterococcus faecalis before or after application of NPs. LIVE/DEAD ® testing under Confocal Laser Scanning Microscopy and bacterial culturing were employed to analyse biofilm biovolume and bacterial viability. Field Emission Scanning Electron Microscopy was also employed to assess biofilm morphology. One-way anova with Welch's correction and post hoc comparison by the Games-Howell test were performed for comparisons between groups. RESULTS The un-functionalized NPs displayed the greatest antimicrobial activity against E. faecalis biofilms as they provided the lowest biovolume (3865.7 ± 2926.97 µm3 ; P < 0.001) and the highest dead/injured cells percentage (79.93 ± 18.40%; P < 0.001), followed by Dox-NPs (biovolume: 19,041.55 ± 17,638.23 µm3 , dead/injured cells: 45.53 ± 26.50%; P < 0.001). Doxycycline-loaded NPs had the largest values of inhibition of biofilm formation with the lowest biofilm biovolume (8517.65 ± 7055.81 µm3 ; P < 0.001) and a high dead/injured bacterial percentage (68.68 ± 12.50%; P < 0.001). Un-functionalized NPs did not reduce biomass growth (P > 0.05), but attained the largest percentage of compromised cells (93 ± 8.23%; P < 0.001), being able to disrupt biofilm formation. It also produced occlusion of dentinal tubules, potentially interfering with bacterial tubule penetration. CONCLUSIONS A new generation of bioactive nano-fillers (doxycycline-functionalized polymeric NPs) had antibacterial activity and occluded dentinal tubules. Incorporating these NPs into endodontic sealers may have the potential to enhance the outcome of root canal treatment.
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Affiliation(s)
| | - P Baca
- Faculty of Dentistry, University of Granada, Granada, Spain
| | - C Solana
- Faculty of Dentistry, University of Granada, Granada, Spain
| | - M Toledano
- Faculty of Dentistry, University of Granada, Granada, Spain
| | | | | | - R Osorio
- Faculty of Dentistry, University of Granada, Granada, Spain
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Jo SB, Kim HK, Lee HN, Kim YJ, Dev Patel K, Campbell Knowles J, Lee JH, Song M. Physical Properties and Biofunctionalities of Bioactive Root Canal Sealers In Vitro. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1750. [PMID: 32899641 PMCID: PMC7559325 DOI: 10.3390/nano10091750] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/29/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022]
Abstract
Calcium silicate-based bioactive glass has received significant attention for use in various biomedical applications due to its excellent bioactivity and biocompatibility. However, the bioactivity of calcium silicate nanoparticle-incorporated bioactive dental sealer is not much explored. Herein, three commercially available bioactive root canal sealers (Endoseal MTA (EDS), Well-Root ST (WST), and Nishika Canal Sealer BG (NBG)) were compared with a resin-based control sealer (AH Plus (AHP)) in terms of physical, chemical, and biological properties. EDS and NBG showed 200 to 400 nm and 100 to 200 nm nanoparticle incorporation in the SEM image, respectively, and WST and NBG showed mineral deposition in Hank's balanced salt solution after 28 days. The flowability and film thickness of all products met the ISO 3107 standard. Water contact angle, linear dimensional changes, and calcium and silicate ion release were significantly different among groups. All bioactive root canal sealers released calcium ions, while NBG released ~10 times more silicon ions than the other bioactive root canal sealers. Under the cytocompatible extraction range, NBG showed prominent cytocompatibility, osteogenecity, and angiogenecity compared to other sealers in vitro. These results indicate that calcium silicate nanoparticle incorporation in dental sealers could be a potential strategy for dental periapical tissue regeneration.
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Affiliation(s)
- Seung Bin Jo
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (S.B.J.); (Y.-J.K.); (K.D.P.); (J.C.K.)
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
| | - Hyun Kyung Kim
- Department of Conservative Dentistry, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (H.K.K.); (H.N.L.)
| | - Hae Nim Lee
- Department of Conservative Dentistry, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (H.K.K.); (H.N.L.)
| | - Yu-Jin Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (S.B.J.); (Y.-J.K.); (K.D.P.); (J.C.K.)
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
| | - Kapil Dev Patel
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (S.B.J.); (Y.-J.K.); (K.D.P.); (J.C.K.)
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
| | - Jonathan Campbell Knowles
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (S.B.J.); (Y.-J.K.); (K.D.P.); (J.C.K.)
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, London WC1E 6HH, UK
- The Discoveries Centre for Regenerative and Precision Medicine, Eastman Dental Institute, University College London, London WC1E 6HH, UK
| | - Jung-Hwan Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (S.B.J.); (Y.-J.K.); (K.D.P.); (J.C.K.)
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
- Department of Biomaterials Science, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea
| | - Minju Song
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (S.B.J.); (Y.-J.K.); (K.D.P.); (J.C.K.)
- Department of Conservative Dentistry, College of Dentistry, Dankook University, 119 Dandae-ro, Cheonan 31116, Korea; (H.K.K.); (H.N.L.)
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Mitwalli H, Alsahafi R, Balhaddad AA, Weir MD, Xu HHK, Melo MAS. Emerging Contact-Killing Antibacterial Strategies for Developing Anti-Biofilm Dental Polymeric Restorative Materials. Bioengineering (Basel) 2020; 7:E83. [PMID: 32751652 PMCID: PMC7552663 DOI: 10.3390/bioengineering7030083] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/16/2020] [Accepted: 07/27/2020] [Indexed: 12/31/2022] Open
Abstract
Polymeric materials are the first choice for restoring tooth cavities, bonding tooth-colored fillings, sealing root canal systems, and many other dental restorative applications. However, polymeric materials are highly susceptible to bacterial attachment and colonization, leading to dental diseases. Many approaches have been investigated to minimize the formation of biofilms over polymeric restorative materials and at the tooth/material interfaces. Among them, contact-killing compounds have shown promising results to inhibit dental biofilms. Contact-killing compounds can be immobilized within the polymer structure, delivering a long-lasting effect with no leaching or release, thus providing advantages compared to release-based materials. This review discusses cutting-edge research on the development of contact-killing compounds in dental restorative materials to target oral pathogens. Contact-killing compounds in resin composite restorations, dental adhesives, root canal sealers, denture-based materials, and crown cements have all demonstrated promising antibacterial properties. Contact-killing restorative materials have been found to effectively inhibit the growth and activities of several oral pathogens related to dental caries, periodontal diseases, endodontic, and fungal infections. Further laboratory optimization and clinical trials using translational models are needed to confirm the clinical applicability of this new generation of contact-killing dental restorative materials.
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Affiliation(s)
- Heba Mitwalli
- Program in Biomedical Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; (H.M.); (R.A.); (A.A.B.); (M.D.W.)
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rashed Alsahafi
- Program in Biomedical Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; (H.M.); (R.A.); (A.A.B.); (M.D.W.)
- Department of Restorative Dental Sciences, College of Dentistry, Umm Al-Qura University, Makkah 24381, Saudi Arabia
| | - Abdulrahman A. Balhaddad
- Program in Biomedical Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; (H.M.); (R.A.); (A.A.B.); (M.D.W.)
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam 34212, Saudi Arabia
| | - Michael D. Weir
- Program in Biomedical Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; (H.M.); (R.A.); (A.A.B.); (M.D.W.)
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA
| | - Hockin H. K. Xu
- Program in Biomedical Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; (H.M.); (R.A.); (A.A.B.); (M.D.W.)
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA
- Center for Stem Cell Biology; Regenerative Medicine, School of Medicine, University of Maryland, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, School of Medicine, University of Maryland, Baltimore, MD 21201, USA
| | - Mary Anne S. Melo
- Program in Biomedical Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; (H.M.); (R.A.); (A.A.B.); (M.D.W.)
- Division of Operative Dentistry, Department of General Dentistry, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA
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Bosaid F, Aksel H, Makowka S, Azim AA. Surface and structural changes in root dentine by various chelating solutions used in regenerative endodontics. Int Endod J 2020; 53:1438-1445. [PMID: 32619296 DOI: 10.1111/iej.13354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 01/16/2023]
Abstract
AIM To evaluate the effects of the prolonged use of various irrigant solutions used during regenerative endodontic procedures on the physical and chemical structure of root canal dentine in extracted human teeth. METHODOLOGY Sixtyroot dentine samples from extracted, single-rooted, human teeth were assigned to 10 groups. Eight groups were irrigated with 1.5% NaOCl for 5 min, followed by 3%, 10%, 17% EDTA or 10% citric acid (CA) for 5 or 10 min. One group received only NaOCl irrigation, and samples with only distilled water irrigation were used as a control group. The changes in microhardness and flexural strength were determined using Vickers and 3-point flexural tester, respectively. Molecular and elemental compositions were recorded using FTIR and EDS spectroscopy. Data were analysed using one-way anova, Kruskal-Wallis and Mann-Whitney U tests. RESULTS The application of 1.5% NaOCl for 5 min did not affect the mineral content or microhardness of dentine (P > 0.05). However, it significantly decreased the dentine collagen peak values (P < 0.05), which was similar to the control group after the use of chelating agents (EDTA and 10% of CA) (P > 0.05). The effect of EDTA on the inorganic content was not concentration and time dependent (P > 0.05). CA resulted in a significantly greater reduction in the inorganic contents compared with the control and EDTA groups (P < 0.05). Regardless of the time, EDTA and CA significantly decreased dentine microhardness compared to the control (P < 0.05) with the greatest reduction in the CA groups (P < 0.05). NaOCl alone was associated with the lowest flexural strength, while none of the other irrigation regimens significantly decreased the flexural strength compared to the control group (P> 0.05). CONCLUSIONS Use of 1.5% NaOCl for 5 min decreased the collagen content of samples of human dentine from extracted teeth while EDTA and 10% citric acid mostly affected the inorganic content and microhardness of dentine surfaces. None of the irrigant solutions significantly decreased the mechanical properties of the entire dentine specimen.
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Affiliation(s)
- F Bosaid
- Division of Endodontics, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
| | - H Aksel
- Division of Endodontics, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
| | - S Makowka
- Dental Materials Research Laboratory, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
| | - A A Azim
- Division of Endodontics, University at Buffalo, School of Dental Medicine, Buffalo, NY, USA
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Leng D, Li Y, Zhu J, Liang R, Zhang C, Zhou Y, Li M, Wang Y, Rong D, Wu D, Li J. The Antibiofilm Activity and Mechanism of Nanosilver- and Nanozinc-Incorporated Mesoporous Calcium-Silicate Nanoparticles. Int J Nanomedicine 2020; 15:3921-3936. [PMID: 32581537 PMCID: PMC7278446 DOI: 10.2147/ijn.s244686] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 05/07/2020] [Indexed: 12/16/2022] Open
Abstract
Background Mesoporous calcium-silicate nanoparticles (MCSNs) have good prospects in the medical field due to their great physicochemical characteristics, antibacterial activity and drug delivery capacity. This study was to analyze the antibiofilm activity and mechanisms of silver (Ag) and zinc (Zn) incorporated MCSNs (Ag/Zn-MCSNs) with different percentages of Ag and Zn. Methods Ag/Zn(1:9, molar ratio)-MCSNs and Ag/Zn(9:1, molar ratio)-MCSNs were prepared and characterized. Endocytosis of nanoparticles by Enterococcus faecalis (E. faecalis) treated with Ag/Zn-MCSNs was observed using TEM to explore the antibacterial mechanisms. The antibiofilm activity of Ag/Zn-MCSNs with different ratios of Ag and Zn was tested by E. faecalis biofilm model in human roots. The human roots pretreated by different Ag/Zn-MCSNs were cultured with E. faecalis. Then, SEM and CLSM were used to observe the survival of E. faecalis on the root canal wall. Cytotoxicity of the nanoparticles was tested by CCK8 kits. Results The Ag/Zn-MCSNs release Ag+ and destroy the cell membranes to kill bacteria. The MCSNs containing Ag showed antibacterial activity against E. faecalis biofilms in different degrees, and they can adhere to dentin surfaces to get a continuous antibacterial effect. However, MTA, MCSNs and Zn-MCSNs could not disrupt the bacterial biofilms obviously. MCSNs, Ag/Zn(1:1, molar ratio)-MCSNs and Ag/Zn(1:9)-MCSNs showed no obvious cytotoxicity, while Ag-MCSNs and Ag/Zn(9:1)-MCSNs showed cytotoxicity. Zn-MCSNs can slightly promote cell proliferation. Conclusion Ag/Zn-MCSNs have good antibiofilm activity. They might achieve an appropriate balance between the antibacterial activity and cytotoxicity by adjusting the ratio of Ag and Zn. Ag/Zn-MCSNs are expected to be a new type of root canal disinfectant or sealer for root canal treatment.
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Affiliation(s)
- Diya Leng
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Yan Li
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Jie Zhu
- Department of Stomatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Ruizhen Liang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of the Seventh Clinic, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Cuifeng Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Yang Zhou
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Mingming Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Ying Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Di Rong
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Daming Wu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Jin Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Oral Special Consultation, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China
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Baras BH, Melo MAS, Thumbigere-Math V, Tay FR, Fouad AF, Oates TW, Weir MD, Cheng L, Xu HHK. Novel Bioactive and Therapeutic Root Canal Sealers with Antibacterial and Remineralization Properties. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1096. [PMID: 32121595 PMCID: PMC7084849 DOI: 10.3390/ma13051096] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 02/07/2023]
Abstract
According to the American Dental Association Survey of Dental Services Rendered (published in 2007), 15 million root canal treatment procedures are performed annually. Endodontic therapy relies mainly on biomechanical preparation, chemical irrigation and intracanal medicaments which play an important role in eliminating bacteria in the root canal. Furthermore, adequate obturation is essential to confine any residual bacteria within the root canal and deprive them of nutrients. However, numerous studies have shown that complete elimination of bacteria is not achieved due to the complex anatomy of the root canal system. There are several conventional antibiotic materials available in the market for endodontic use. However, the majority of these antibiotics and antiseptics provide short-term antibacterial effects, and they impose a risk of developing antibacterial resistance. The root canal is a dynamic environment, and antibacterial and antibiofilm materials with long-term effects and nonspecific mechanisms of action are highly desirable in such environments. In addition, the application of acidic solutions to the root canal wall can alter the dentin structure, resulting in a weaker and more brittle dentin. Root canal sealers with bioactive properties come in direct contact with the dentin wall and can play a positive role in bacterial elimination and strengthening of the root structure. The new generation of nanostructured, bioactive, antibacterial and remineralizing additives into polymeric resin-based root canal sealers are discussed in this review. The effects of these novel bioactive additives on the physical and sealing properties, as well as their biocompatibility, are all important factors that are presented in this article.
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Affiliation(s)
- Bashayer H. Baras
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (B.H.B.); (V.T.-M.); (T.W.O.)
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mary Anne S. Melo
- Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA;
| | - Vivek Thumbigere-Math
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (B.H.B.); (V.T.-M.); (T.W.O.)
| | - Franklin R. Tay
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA 30912, USA;
| | - Ashraf F. Fouad
- Division of Comprehensive Oral Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC 27599-7450, USA;
| | - Thomas W. Oates
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (B.H.B.); (V.T.-M.); (T.W.O.)
| | - Michael D. Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (B.H.B.); (V.T.-M.); (T.W.O.)
| | - Lei Cheng
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610000, China
| | - Hockin H. K. Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (B.H.B.); (V.T.-M.); (T.W.O.)
- Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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