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Ravi B, Paulraj J, Maiti S, Shanmugam R. Assessing the Influence of Thermocycling on Compressive Strength, Flexural Strength, and Microhardness in Green-Mediated Nanocomposite-Enhanced Glass Ionomer Cement Compared to Traditional Glass Ionomer Cement. Cureus 2024; 16:e56078. [PMID: 38618398 PMCID: PMC11009900 DOI: 10.7759/cureus.56078] [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: 02/27/2024] [Accepted: 03/13/2024] [Indexed: 04/16/2024] Open
Abstract
Background and objective Glass ionomer cement (GIC), also known as polyalkenoate cement, has been extensively used in dentistry for both luting and restorative purposes. Despite being the first choice for aesthetic restorations due to their chemical bonding ability to teeth, GICs have faced challenges such as low mechanical properties, abrasion resistance, and sensitivity to moisture, leading to the search for improved materials. This study aims to assess the effects of thermocycling on the compressive, flexural strength, and microhardness of green-mediated nanocomposite-modified GIC in comparison to traditional GIC. Methodology Green-mediated nanoparticles, consisting of chitosan, titanium, zirconia, and hydroxyapatite (Ch-Ti-Zr-HA), were synthesized using a one-pot synthesis technique to form nanocomposites. These nanocomposites were then incorporated into GIC specimens in varying concentrations (3%, 5%, and 10%), denoted as Group I, Group II, and Group III, respectively. Group IV served as the control, consisting of conventional GIC. To assess the performance of the novel restorative materials over an extended period, compressive strength, flexural strength, and microhardness were measured before and after thermocycling using a universal material testing machine. Furthermore, scanning electron microscopy (SEM) analysis was carried out following the thermocycling process. The collected data were subjected to statistical analysis through one-way analysis of variance (ANOVA) and paired t-tests. Results The findings demonstrated that, in comparison to the control group, both the mean compressive strength and flexural strength, as well as hardness, were notably higher for the 10% and 5% nanocomposite-modified GIC specimens before and after thermocycling (P < 0.05). Notably, there was no notable difference observed between the 5% and 10% concentrations (P > 0.05). These results suggest that incorporating green-mediated nanocomposites (Ch-Ti-Zr-HA) modified GIC at either 5% or 10% concentration levels leads to improved mechanical properties, indicating their potential as promising alternatives in dental restorative materials. Conclusions Based on our findings, it can be inferred that the 10% and 5% concentrations of green-mediated (Ch-Ti-Zr-HA) modified GIC exhibit superior compressive and flexural strength compared to conventional GIC. Additionally, analysis of the scanning electron microscope (SEM) morphology revealed that green-mediated GIC displays smoother surface characteristics in contrast to conventional GIC. These results underscore the potential advantages of utilizing green-mediated nanocomposite-modified GIC in dental applications, suggesting enhanced mechanical properties and surface quality over conventional.
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Affiliation(s)
- Bharath Ravi
- Department of Pedodontics and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Jessy Paulraj
- Department of Pedodontics and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Subhabrata Maiti
- Department of Prosthodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Rajeshkumar Shanmugam
- Nanobiomedicine Lab, Centre for Global Health Research, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, IND
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Panetta A, Lopes P, Novaes TF, Rio R, Fernandes GVO, Mello-Moura ACV. Evaluating Glass Ionomer Cement Longevity in the Primary and Permanent Teeth-An Umbrella Review. J Funct Biomater 2024; 15:48. [PMID: 38391901 PMCID: PMC10890125 DOI: 10.3390/jfb15020048] [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: 01/08/2024] [Revised: 02/12/2024] [Accepted: 02/16/2024] [Indexed: 02/24/2024] Open
Abstract
The aim of this umbrella review was to evaluate the longevity of glass ionomer cement (GIC) as a restorative material for primary and permanent teeth. Research in the literature was conducted in three databases (MedLine/PubMed, Web of Science, and Scopus). The inclusion criteria were: (1) to be a systematic review of clinical trials that (2) evaluated the clinical longevity of GICs as a restorative material in primary and/or permanent teeth; the exclusion criteria were: (1) not being a systematic review of clinical trials; (2) not evaluating longevity/clinical performance of GICs as a restorative material; and (3) studies of dental restorative materials in teeth with enamel alterations, root caries, and non-carious cervical lesions. Twenty-four eligible articles were identified, and 13 were included. The follow-up periods ranged from 6 months to 6 years. Different types of GICs were evaluated in the included studies: resin-modified glass ionomer cement (RMGIC), compomers, and low- and high-viscosity glass ionomer cement. Some studies compared amalgam and composite resins to GICs regarding longevity/clinical performance. Analyzing the AMSTAR-2 results, none of the articles had positive criteria in all the evaluated requisites, and none of the articles had an a priori design. The criteria considered for the analysis of the risk of bias of the included studies were evaluated through the ROBIS tool, and the results of this analysis showed that seven studies had a low risk of bias; three studies had positive results in all criteria except for one criterion of unclear risk; and two studies showed a high risk of bias. GRADE tool was used to determine the quality of evidence; for the degree of recommendations, all studies were classified as Class II, meaning there was still conflicting evidence on the clinical performance/longevity of GICs and their recommendations compared to other materials. The level of evidence was classified as Level B, meaning that the data were obtained from less robust meta-analyses and single randomized clinical trials. To the best of our knowledge, this is the first umbrella review approaching GIC in permanent teeth. GICs are a good choice in both dentitions, but primary dentition presents more evidence, especially regarding the atraumatic restorative treatment (ART) technique. Within the limitation of this study, it is still questionable if GIC is a good restorative material in the medium/long term for permanent and primary dentition. Many of the included studies presented a high risk of bias and low quality. The techniques, type of GIC, type of cavity, and operator experience highly influence clinical performance. Thus, clinical decision-making should be based on the dental practitioner's ability, each case analysis, and the patient's wishes. More evidence is needed to determine which is the best material for definitive restorations in permanent and primary dentition.
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Affiliation(s)
- Alessandro Panetta
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | - Pedro Lopes
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
- Center for Interdisciplinary Research in Health, Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | | | - Rute Rio
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
- Center for Interdisciplinary Research in Health, Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | - Gustavo Vicentis Oliveira Fernandes
- Center for Interdisciplinary Research in Health, Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
- A. T. Still University-Missouri School of Dentistry & Oral Health, St. Louis, MO 63104, USA
| | - Anna Carolina Volpi Mello-Moura
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
- Center for Interdisciplinary Research in Health, Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
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Okuda H, Inada M, Konishi T, Kawashima N, Wada T, Okiji T, Uo M. Improvement of the setting properties of mineral trioxide aggregate cements using cellulose nanofibrils. Dent Mater J 2024; 43:106-111. [PMID: 38171742 DOI: 10.4012/dmj.2023-220] [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] [Indexed: 01/05/2024]
Abstract
Cellulose nanofibrils (CNFs) exhibit excellent mechanical properties and are used to reinforce various composites. The effects of incorporating CNFs into commercial mineral trioxide aggregate (MTA) cements (NEX MTA (NEX) and ProRoot® MTA (PR)) on the underwater setting properties, compressive strength, and flowability were estimated in this study. NEX mixed without CNFs disintegrated after water immersion. NEX mixed with CNF-suspended solutions showed good setting properties under water immersion and a similar compressive strength, which was kept in air (100% relative humidity). PR did not degrade after water immersion, regardless of the presence of CNFs, and no significant difference in the compressive strength caused by CNFs incorporation was detected. The relative flowability of the NEX mixture decreased with increasing CNFs content up to 1.0 w/v%. The application of CNF-incorporated MTA in various dental cases is promising because CNFs prevent the water-immersion-dependent collapse of some MTA cements immediately after mixing.
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Affiliation(s)
- Hiroki Okuda
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Miki Inada
- Center of Advanced Instrumental Analysis, Kyushu University
| | - Tomoya Konishi
- Department of Creative Engineering, National Institute of Technology, Anan College
| | - Nobuyuki Kawashima
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Takahiro Wada
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Takashi Okiji
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Motohiro Uo
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Ferreira FV, Souza AG, Ajdary R, de Souza LP, Lopes JH, Correa DS, Siqueira G, Barud HS, Rosa DDS, Mattoso LH, Rojas OJ. Nanocellulose-based porous materials: Regulation and pathway to commercialization in regenerative medicine. Bioact Mater 2023; 29:151-176. [PMID: 37502678 PMCID: PMC10368849 DOI: 10.1016/j.bioactmat.2023.06.020] [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: 05/04/2023] [Revised: 06/16/2023] [Accepted: 06/24/2023] [Indexed: 07/29/2023] Open
Abstract
We review the recent progress that have led to the development of porous materials based on cellulose nanostructures found in plants and other resources. In light of the properties that emerge from the chemistry, shape and structural control, we discuss some of the most promising uses of a plant-based material, nanocellulose, in regenerative medicine. Following a brief discussion about the fundamental aspects of self-assembly of nanocellulose precursors, we review the key strategies needed for material synthesis and to adjust the architecture of the materials (using three-dimensional printing, freeze-casted porous materials, and electrospinning) according to their uses in tissue engineering, artificial organs, controlled drug delivery and wound healing systems, among others. For this purpose, we map the structure-property-function relationships of nanocellulose-based porous materials and examine the course of actions that are required to translate innovation from the laboratory to industry. Such efforts require attention to regulatory aspects and market pull. Finally, the key challenges and opportunities in this nascent field are critically reviewed.
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Affiliation(s)
- Filipe V. Ferreira
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation – Rua XV de Novembro, 1452, São Carlos, SP, 13560-979, Brazil
| | - Alana G. Souza
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, Brazil
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, Aalto, Espoo, FIN-00076, Finland
| | - Lucas P. de Souza
- College of Engineering and Physical Sciences, Aston Institute of Materials Research, Aston University, Birmingham, UK
| | - João H. Lopes
- Department of Chemistry, Division of Fundamental Sciences (IEF), Technological Institute of Aeronautics (ITA), São Jose dos Campos, SP, Brazil
| | - Daniel S. Correa
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation – Rua XV de Novembro, 1452, São Carlos, SP, 13560-979, Brazil
| | - Gilberto Siqueira
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Hernane S. Barud
- Biopolymers and Biomaterials Laboratory (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, 14801-340, São Paulo, Brazil
| | - Derval dos S. Rosa
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, Brazil
| | - Luiz H.C. Mattoso
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation – Rua XV de Novembro, 1452, São Carlos, SP, 13560-979, Brazil
| | - Orlando J. Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, Aalto, Espoo, FIN-00076, Finland
- Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and, Department of Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
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Khan MA, Muhammad N, Liaqat S, Ejaz M, Fayyaz S, Ali H, Ali Khan T. Mechanical and antibacterial properties of conventional pit and fissure sealants with addition of miswak fibers. Biomater Investig Dent 2023; 10:2271972. [PMID: 38204475 PMCID: PMC10763874 DOI: 10.1080/26415275.2023.2271972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 10/11/2023] [Indexed: 01/12/2024] Open
Abstract
The occlusal surface of a tooth is affected by the development of biofilm in pits and fissures as bacteria and food particles accumulate in its complex structure. In this study, miswak fibers containing cellulose and antimicrobial extract were incorporated in commercial pit and fissure sealants. The miswak powder was characterized by different analytical techniques. The powder was mixed in different ratios (0-5%) into a pit and fissure sealant to result in five sealants (Groups 0-5), and their mechanical properties i.e. flexural strength, compressive strength, and Vickers hardness were evaluated. The sealants were also evaluated against streptococcus mutans oral pathogenic bacteria. SEM analysis confirmed irregular shape and micron-size particles of miswak powder. The infrared spectral analysis and X-ray differential peaks showed characteristic peaks related to miswak fibers. The particle appearance increased in prepared pits and fissure sealants with higher loading of miswak powder in SEM analysis. The flexural strength, compressive strength, and Vickers hardness values were obtained in the range of 148-221 (±16.6: p-value < 0.001) MPa, 43.1-50.3 MPa (±1.7: p-value <0.001), and 15.2-21.26 VHN (±0.56: p-value <0.001) for control and prepared sealant specimens respectively. In the antibacterial study, the zone of inhibitions increased with increased content of miswak from 15.6 ± 0.45 mm (Group 1) to 20.3 ± 0.32 mm (Group 5). The MIC was calculated to be 0.039%. The prepared experimental sealant had acceptable mechanical and good antibacterial properties therefore it could be recommended as an efficient pit and fissure sealant.
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Affiliation(s)
- Mohammad Adnan Khan
- Department of Dental Materials, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Nawshad Muhammad
- Department of Dental Materials, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Saad Liaqat
- Department of Dental Materials, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Munazzah Ejaz
- Department of Dental Materials, Sardar Begum Dental College Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Sarmad Fayyaz
- Department of Dental Materials, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Hoor Ali
- Department of Orthodontics, Khyber College of Dentistry Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Taj Ali Khan
- Department of Microbiology, Institute of Pathology and Diagnostic Medicine, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa, Pakistan
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Leong MY, Kong YL, Harun MY, Looi CY, Wong WF. Current advances of nanocellulose application in biomedical field. Carbohydr Res 2023; 532:108899. [PMID: 37478689 DOI: 10.1016/j.carres.2023.108899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/23/2023]
Abstract
Nanocellulose (NC) is a natural fiber that can be extracted in fibrils or crystals form from different natural sources, including plants, bacteria, and algae. In recent years, nanocellulose has emerged as a sustainable biomaterial for various medicinal applications including drug delivery systems, wound healing, tissue engineering, and antimicrobial treatment due to its biocompatibility, low cytotoxicity, and exceptional water holding capacity for cell immobilization. Many antimicrobial products can be produced due to the chemical functionality of nanocellulose, such disposable antibacterial smart masks for healthcare use. This article discusses comprehensively three types of nanocellulose: cellulose nanocrystals (CNC), cellulose nanofibrils (CNF), and bacterial nanocellulose (BNC) in view of their structural and functional properties, extraction methods, and the distinctive biomedical applications based on the recently published work. On top of that, the biosafety profile and the future perspectives of nanocellulose-based biomaterials have been further discussed in this review.
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Affiliation(s)
- M Y Leong
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University Lakeside Campus, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia
| | - Y L Kong
- Department of Engineering and Applied Sciences, American Degree Program, Taylor's University Lakeside Campus, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia.
| | - M Y Harun
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor Darul Ehsan, Malaysia
| | - C Y Looi
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University Lakeside Campus, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia
| | - W F Wong
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
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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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Nano-cellulose Reinforced Glass Ionomer Restorations: An In Vitro study. Int Dent J 2023; 73:243-250. [PMID: 36085100 PMCID: PMC10023591 DOI: 10.1016/j.identj.2022.07.013] [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: 05/04/2022] [Revised: 07/29/2022] [Accepted: 07/29/2022] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Various modifications in formulation of glass ionomer cements (GICs) have been made in order to improve the clinical performance of these restorations. The aim of this work was to evaluate the microleakage and microshear bond strength (μSBS) of bacterial cellulose nanocrystal (BCNC)-modified glass ionomer cement (GIC) restorations in primary dentition. METHODS A total number of 60 freshly extracted primary molar teeth were selected. Half of the samples were used for μSBS testing (in 2 groups, n = 15). In group 1, conventional GIC (CGIC) of Fuji IX (GC) was placed in cylindrical molds on dentinal surfaces. In group 2, CGIC of Fuji IX containing 1% wt of BCNCs was used. μSBS was evaluated using a universal testing machine. In another part of the study, microleakage of class V restorations was assessed according to the mentioned groups (n = 15). The sectioned samples were observed under stereomicroscope, and microleakage scores were recorded. SPSS version 16.0 (SPSS), independent samples t test, and Mann-Whitney U test were used for statistical analysis at a significance level of P < .05. RESULTS Results showed statistically significant differences between the μSBS of CGIC and modified GIC groups (P < .0001). The BCNC-modified GIC group recorded significantly higher bond strength values (3.51 ± 0.033 vs 1.38 ± 0.034 MPa). Also, microleakage scores of CGIC and BCNC-modified GIC restorations were not significantly different (P = .57). CONCLUSIONS Based on our findings, it was concluded that incorporating BCNCs (1% wt) into the CGIC of Fuji IX significantly increased the μSBS to the dentin structure of the primary teeth.
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Sheng SB, Alawi R, Johari Y, Abdul Muttlib NA, Hussin MH, Mohamad D, Karobari MI. Effects of Fiber Loading on Mechanical Properties of Kenaf Nanocellulose Reinforced Nanohybrid Dental Composite Made of Rice Husk Silica. J Funct Biomater 2023; 14:jfb14040184. [PMID: 37103274 PMCID: PMC10146754 DOI: 10.3390/jfb14040184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023] Open
Abstract
The innovation of nanocellulose as reinforcement filler in composites has been a topic of interest in the development of new biomaterials. The objective of this study was to investigate the mechanical properties of a nanohybrid dental composite made of rice husk silica and loaded with different percentages of kenaf nanocellulose. Kenaf cellulose nanocrystals (CNC) were isolated and characterized using a transmission electron microscope (TEM) (Libra 120, Carl Zeiss, Germany). The experimental composite was fabricated with fiber loadings of 1 wt%, 2 wt%, 3 wt%, 4 wt%, and 6 wt% silane-treated kenaf CNC, and subjected to a flexural and compressive strength test (n = 7) using an Instron Universal Testing Machine (Shimadzu, Kyoto, Japan), followed by a scanning electron microscopic assessment of the flexural specimen’s fracture surface using a scanning electron microscope (SEM) (FEI Quanta FEG 450, Hillsborough, OR, USA). Commercial composites Filtek Z350XT (3M ESPE, St. Paul, MN, USA), Neofil (Kerr Corporation, Orange, CA, USA) and Ever-X Posterior (GC Corporation, Tokyo, Japan) were used as a comparison. The average diameter of kenaf CNC under TEM was 6 nm. For flexural and compressive strength tests, one-way ANOVA showed a statistically significant difference (p < 0.05) between all groups. Compared to the control group (0 wt%), the incorporation of kenaf CNC (1 wt%) into rice husk silica nanohybrid dental composite showed a slight improvement in mechanical properties and modes of reinforcement, which was reflected in SEM images of the fracture surface. The optimum dental composite reinforcement made of rice husk was 1 wt% kenaf CNC. Excessive fiber loading results in a decline in mechanical properties. CNC derived from natural sources may be a viable alternative as a reinforcement co-filler at low concentrations.
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Kashyap PK, Chauhan S, Negi YS, Goel NK, Rattan S. Biocompatible carboxymethyl chitosan-modified glass ionomer cement with enhanced mechanical and anti-bacterial properties. Int J Biol Macromol 2022; 223:1506-1520. [PMID: 36368362 DOI: 10.1016/j.ijbiomac.2022.11.028] [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: 07/28/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022]
Abstract
Due to the potential adverse effects of conventional dental cements, the demand for biocompatible cements have grown tremendously in the field of dentistry. In this respect, Glass ionomer cements (GICs) are being developed by different researchers. However, low mechanical strength of GIC make them unsuitable for application in high-stress areas. Thus, numerous initiatives to improve mechanical performance have been attempted till date including incorporation of reinforcing fillers. Novelty of the study lies in using carboxymethyl chitosan (CMC) to develop a biocompatible dental cement (DC/CMC-m-GP), which would have enhanced mechanical strength due to greater interaction of CMC with the particles of GIC and better cyto-compatibility due to its cell-proliferation activity. The mechanical strength, acid erosion and fluoride release of DC/CMC-m-GP were studied and compared with control dental cement (DC/Control). DC/CMC-m-GP shows compressive strength of 157.45 M Pa and flexural strength of 18.76 M Pa which was higher as compared to DC/Control. The morphology of the GICs were studied through FESEM. Anti-microbial activity of DC/CMC-m-GP was studied by Agar disc-diffusion method and biofilm assay against S. mutans, which shows that DC/CMC-m-GP inhibits bacterial adhesion on its surface. MTT assay infers that DC/CMC-m-GP was non-cytotoxic and did not affect the cell viability significantly.
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Affiliation(s)
| | - Sonal Chauhan
- Amity Institute of Applied Sciences, Amity University Uttar Pradesh, India.
| | | | - Narender Kumar Goel
- Radiation Technology Development Division, Bhabha Atomic Research Centre, India.
| | - Sunita Rattan
- Amity Institute of Applied Sciences, Amity University Uttar Pradesh, India.
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Vital N, Ventura C, Kranendonk M, Silva MJ, Louro H. Toxicological Assessment of Cellulose Nanomaterials: Oral Exposure. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3375. [PMID: 36234501 PMCID: PMC9565252 DOI: 10.3390/nano12193375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Cellulose nanomaterials (CNMs) have emerged recently as an important group of sustainable bio-based nanomaterials (NMs) with potential applications in multiple sectors, including the food, food packaging, and biomedical fields. The widening of these applications leads to increased human oral exposure to these NMs and, potentially, to adverse health outcomes. Presently, the potential hazards regarding oral exposure to CNMs are insufficiently characterised. There is a need to understand and manage the potential adverse effects that might result from the ingestion of CNMs before products using CNMs reach commercialisation. This work reviews the potential applications of CNMs in the food and biomedical sectors along with the existing toxicological in vitro and in vivo studies, while also identifying current knowledge gaps. Relevant considerations when performing toxicological studies following oral exposure to CNMs are highlighted. An increasing number of studies have been published in the last years, overall showing that ingested CNMs are not toxic to the gastrointestinal tract (GIT), suggestive of the biocompatibility of the majority of the tested CNMs. However, in vitro and in vivo genotoxicity studies, as well as long-term carcinogenic or reproductive toxicity studies, are not yet available. These studies are needed to support a wider use of CNMs in applications that can lead to human oral ingestion, thereby promoting a safe and sustainable-by-design approach.
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Affiliation(s)
- Nádia Vital
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Célia Ventura
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Michel Kranendonk
- NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Maria João Silva
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Henriqueta Louro
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
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Polysaccharides-based nanofibrils: From tissue engineering to biosensor applications. Carbohydr Polym 2022; 291:119670. [DOI: 10.1016/j.carbpol.2022.119670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 11/22/2022]
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Sangsuwan P, Chotigeat W, Tannukit S, Kedjarune-Leggat U. Long-Term Effect of Modified Glass Ionomer Cement with Mimicked Biological Property of Recombinant Translationally Controlled Protein. Polymers (Basel) 2022; 14:polym14163341. [PMID: 36015596 PMCID: PMC9412370 DOI: 10.3390/polym14163341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
This study modified glass ionomer cement (GIC) by adding mimicked biological molecules to reduce cell death. GIC was modified to BIOGIC by adding chitosan and bovine serum albumin for enhancing protein release. The BIOGIC was supplemented with tricalcium phosphate (TCP) and recombinant translationally controlled tumor protein (TCTP) to improve its biological properties. Four groups of materials, GIC, BIOGIC, BIOGIC+TCP, and BIOGIC + TCP + TCTP, were examined by XRD and SEM-EDX. TCTP released from the specimens was determined by an ELISA method. Human dental pulp stem cells (hDPSCs) were harvested and analyzed by MTT assay, apoptosis, gene expression, and cell differentiation. All groups had the same crystallization characteristic peaks of La2O3. The elemental compositions composed of La, Si, and Al are the main inorganic components. The results show that BIOGIC + TCP + TCTP presented significantly higher percentages of cell viability than other groups on day 1 to day 23 (p < 0.05), but were not different after day 24 to day 41 and had reduced cell apoptosis including BAX, TPT1, BCL-2, and Caspase-3. The BIOGIC + TCP + TCTP demonstrated higher odontoblast mineralization and differentiation markers including ALP activity, DSPP, DMP-1, ALP, BMP-2, and OPN. It enhanced cell proliferation and differentiation as well as mineralization with down-regulation of genes related to apoptosis compared with other groups.
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Affiliation(s)
- Prawichaya Sangsuwan
- Molecular Biology and Bioinformatics Program, Biological Science Division, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Wilaiwan Chotigeat
- Molecular Biology and Bioinformatics Program, Biological Science Division, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Sissada Tannukit
- Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
- Cell Biology and Biomaterials Research Unit, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Ureporn Kedjarune-Leggat
- Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
- Cell Biology and Biomaterials Research Unit, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
- Correspondence:
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Morais AMDS, Pereira YMR, Souza-Araújo IJD, Silva DF, Pecorari VGA, Gomes OP, Nociti-Júnior FH, Puppin-Rontani RM, Vieira-Junior WF, Lisboa-Filho PN, Kantovitz KR. TiO2 nanotube-containing glass ionomer cements display reduced aluminum release rates. Braz Oral Res 2022; 36:e097. [PMID: 35830141 DOI: 10.1590/1807-3107bor-2022.vol36.0097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 04/19/2022] [Indexed: 11/21/2022] Open
Abstract
Titanium dioxide nanotubes (TiO2-nts) were incorporated into a glass ionomer cement (GIC) with improved mechanical properties and antibacterial activity. The aims of the present in vitro study were to define the elemental characterization, aluminum (Al) release rate, and initial working time for GIC reinforced with TiO2-nts, in an experimental caries model. TiO2-nts were incorporated into GIC powder components at 5% by weight, and compared with unblended GIC. Experimental approaches used energy-dispersive spectrometry (EDS), atomic absorption spectrophotometry (AAS), and brightness loss to define surface element properties, Al release rates, and initial working time, respectively. Statistical analysis was performed by 2-way ANOVA, Tukey's test, generalized linear models, and Student's t test (a = 0.05). EDS data analysis revealed that TiO2-nts incorporated into GIC had no significant impact on the typical elemental composition of GICs in an in vitro caries model. Regarding the demineralizing solution, GIC with TiO2-nt significantly decreased the Al release rate, compared with the control group (p < 0.0001). Moreover, TiO2-nt incorporated into GIC did not alter the initial working time of the material (p > 0.05). These findings add information to our scientific body of knowledge concerning the potential impact of TiO2-nt on the performance of conventional GICs.
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Affiliation(s)
- Ana Mara da Silva Morais
- Faculdade São Leopoldo Mandic - SLMandic, School of Dentistry, Dental Material Area, Campinas, SP, Brazil
| | | | - Isaac Jordão de Souza-Araújo
- University of Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil
| | - Daniel Furtado Silva
- Federal University of Paraíba - UFPB, School of Dentistry, Restorative Dentistry Area, João Pessoa, PB, Brazil
| | | | - Orisson Ponce Gomes
- São Paulo State University - Unesp, School of Sciences, Department of Physics, Bauru, SP, Brazil
| | | | - Regina Maria Puppin-Rontani
- University of Campinas - Unicamp, Piracicaba Dental School, Department of Pediatric Dentistry, Piracicaba, SP, Brazil
| | | | | | - Kamila Rosamilia Kantovitz
- Faculdade São Leopoldo Mandic - SLMandic, School of Dentistry, Dental Material Area, Campinas, SP, Brazil
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Duarte ACA, Pereira RDFC, Carvalho SMD, Silva AGD, Araújo CTPD, Galo R, Dumont VC. Enhancing glass ionomer cement features by using the calcium phosphate nanocomposite. Braz Dent J 2022; 33:99-108. [PMID: 35766723 PMCID: PMC9645200 DOI: 10.1590/0103-6440202204887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 03/02/2022] [Indexed: 12/02/2022] Open
Abstract
This study showed the synthesis of Glass ionomer cements (GIC) modified with
calcium phosphate nanoparticles (nCaP). The nCaP/GIC were submitted to
mechanical compression and diametral tensile tests. The biocomposite were
characterized by scanning electron microscopy (SEM), energy-dispersive X-ray
spectroscopy (EDX), X-ray diffraction (XRD) and Fourier-transform infrared
spectroscopy (FTIR). Cytotoxicity and cell viability tests were performed on the
human bone marrow mesenchymal stem cells using a
3-(4,5-dimethylthiazol-2yl)2,5-diphenyl- tetrazolium-bromide assay and LIVE/DEAD
assays. Statistically significant differences were observed for mechanical
properties (Kruskal-Wallis, p<0.001), nCaP/GIC showed higher resistance to
compression and diametral traction. The SEM analyses revealed a uniform
distribution nCaP in the ionomer matrix. The EDX and XRD results indicated that
hydroxyapatite and calcium β-triphosphate phases. The FTIR spectra revealed the
asymmetric band of ν3PO43- between 1100-1030cm-1 and the vibration band
associated with ν1PO43- in 963cm-1 associated with nCaP. The nCaP/GIC presented
response to adequate cell viability and non-cytotoxic behavior. Therefore, the
new nCaP/GIC composite showed great mechanical properties, non-cytotoxic
behavior, and adequate response to cell viability with promising dental
applications.
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Affiliation(s)
- Ana Caroline Alves Duarte
- Department of Pediatric Clinics, Federal University of the Vales do Jequitinhonha e Mucuri - UFVJM, Diamantina-MG, Brasil
| | | | | | | | | | - Rodrigo Galo
- Department of Prosthodontics and Dental Materials, School of Dentistry of Ribeirão Preto, University of São Paulo Ribeirão Preto-SP, Brasil
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Yadav R, Meena A, Patnaik A. Biomaterials for dental composite applications: A comprehensive review of physical, chemical, mechanical, thermal, tribological, and biological properties. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5648] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ramkumar Yadav
- Department of Mechanical Engineering Malaviya National Institute of Technology Jaipur Rajasthan India
| | - Anoj Meena
- Department of Mechanical Engineering Malaviya National Institute of Technology Jaipur Rajasthan India
| | - Amar Patnaik
- Department of Mechanical Engineering Malaviya National Institute of Technology Jaipur Rajasthan India
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Evaluation of the Surface Hardness and Roughness of a Resin-Modified Glass Ionomer Cement Containing Bacterial Cellulose Nanocrystals. Int J Dent 2021; 2021:8231473. [PMID: 34931124 PMCID: PMC8684512 DOI: 10.1155/2021/8231473] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/24/2021] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study was to evaluate the performance of a resin-modified glass ionomer cement (RMGIC) to which bacterial cellulose nanocrystals (BCNs) were added. BCNs were incorporated into the RMGIC powder in ratios of 0.3%, 0.5%, and 1% (w/w). One control and three experimental groups were enrolled in the study: unmodified RMGIC (control), 0.3% (w/w) BCN-modified RMGIC, 0.5% (w/w) BCN-modified RMGIC, and 1% (w/w) BCN-modified RMGIC. The surface hardness and surface roughness were the parameters assessed. The materials were characterized by scanning electron microscopy (SEM). The data were analyzed using the one-way ANOVA and Kruskal–Wallis tests for surface hardness and roughness, respectively. The addition of BCN resulted in the improvement of surface roughness in all the specimens compared with the control material. The RMGIC modified by 1% (w/w) BCN showed the lowest surface roughness (decreased by 52%) among all tested groups. However, BCN had a negative effect on the surface hardness of RMGIC. The group with 0.3% (w/w) BCN had the least decrease in microhardness (13%). According to the results, the RMGIC group modified by 1% (w/w) BCN had a smoother surface than the other groups. The surface microhardness of the RMGIC decreased after BCNs were added to it.
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18
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Amin F, Rahman S, Khurshid Z, Zafar MS, Sefat F, Kumar N. Effect of Nanostructures on the Properties of Glass Ionomer Dental Restoratives/Cements: A Comprehensive Narrative Review. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6260. [PMID: 34771787 PMCID: PMC8584882 DOI: 10.3390/ma14216260] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/14/2021] [Accepted: 10/15/2021] [Indexed: 12/16/2022]
Abstract
Overall perspective of nanotechnology and reinforcement of dental biomaterials by nanoparticles has been reported in the literature. However, the literature regarding the reinforcement of dental biomaterials after incorporating various nanostructures is sparse. The present review addresses current developments of glass ionomer cements (GICs) after incorporating various metallic, polymeric, inorganic and carbon-based nanostructures. In addition, types, applications, and implications of various nanostructures incorporated in GICs are discussed. Most of the attempts by researchers are based on the laboratory-based studies; hence, it warrants long-term clinical trials to aid the development of suitable materials for the load bearing posterior dentition. Nevertheless, a few meaningful conclusions are drawn from this substantial piece of work; they are as follows: (1) most of the nanostructures are likely to enhance the mechanical strength of GICs; (2) certain nanostructures improve the antibacterial activity of GICs against the cariogenic bacteria; (3) clinical translation of these promising outcomes are completely missing, and (4) the nanostructured modified GICs could perform better than their conventional counterparts in the load bearing posterior dentition.
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Affiliation(s)
- Faiza Amin
- Science of Dental Materials Department, Dow Dental College, Dow University of Health Sciences, Karachi 74200, Pakistan;
| | - Sehrish Rahman
- Science of Dental Materials Department, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan; (S.R.); (N.K.)
| | - Zohaib Khurshid
- Department of Prosthodontics and Dental Implantology, College of Dentistry, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah 41311, Saudi Arabia;
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan
| | - Farshid Sefat
- Department of Biomedical and Electronics Engineering, School of Engineering, University of Bradford, Bradford BD7 1DP, UK;
| | - Naresh Kumar
- Science of Dental Materials Department, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan; (S.R.); (N.K.)
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Moradian M, Jafarpour D, Saadat M, Tahmasebi F. The effect of bacterial cellulose nanocrystals on the shear bond strength of resin modified glass ionomer cement to dentin. J Clin Exp Dent 2021; 13:e784-e788. [PMID: 34512917 PMCID: PMC8412803 DOI: 10.4317/jced.58153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/15/2021] [Indexed: 11/05/2022] Open
Abstract
Background The present study aimed to investigate the effect of bacterial cellulose nanocrystals (BCNC) on the shear bond strength (SBS) of resin modified glass ionomer cement (RMGIC) to dentin. Material and Methods A total of 48 freshly extracted intact third molars were randomly divided into four main groups with three different concentrations (0.3%, 0.5% and 1% wt) of BCNC with RMGIC and control group without BCNC. These specimens were kept in distilled water at 37° C for 24h. Shear bond strength was examined, using the universal testing machine. Kruskal-Wallis test and Dunn`s post-hoc test were applied for analysis of data. P<0.05 was considered as the level of significance. Results The addition of a 1%wt of BCNC to the RMGIC led to a significant increase in the shear bond strength (7.17 ± 2.14) compared to the control group (2.09 ± 1.80) (P=0.007). The shear bond strength was improved up to 343%. Conclusions It was found that the incorporation of 1% wt BCNC to the RMGICs enhanced the SBS properties of the RMGIC significantly. Modifying RMGIC with BCNC might be advantageous in terms of improving the restorative material. Key words:Bacterial cellulose nanocrystals, RMGIC, Shear bond strength.
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Affiliation(s)
- Marzieh Moradian
- Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Dana Jafarpour
- Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Saadat
- Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farzin Tahmasebi
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Moradian M, Nosrat Abadi M, Jafarpour D, Saadat M. Effects of Bacterial Cellulose Nanocrystals on the Mechanical Properties of Resin-Modified Glass Ionomer Cements. Eur J Dent 2021; 15:197-201. [PMID: 33126285 PMCID: PMC8184268 DOI: 10.1055/s-0040-1717051] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES The purpose of this study was to evaluate the effect of bacterial cellulose nanocrystals (BCNCs) on the mechanical properties of resin-modified glass ionomer cements (RMGICs) including compressive strength (CS), diametral tensile strength (DTS), and modulus of elasticity (E). MATERIALS AND METHODS BCNCs were incorporated into RMGIC at various concentrations (0.3, 0.5, and 1 wt%). Unmodified RMGIC was used as the control group. The specimens were stored in distilled water at 37°C for 24 hours. CS and DTS, as well as modulus of elasticity, were evaluated using a universal testing machine. The nanostructure of BCNCs was observed via field emission scanning electron microscopy. STATISTICAL ANALYSIS One-way analysis of variance and post-hoc Tukey tests were used for data analysis. Level of significance was at p < 0.05. RESULTS The addition of BCNCs to RMGIC led to an increase in all of the tested mechanical properties compared with the control group, with a significant increase observed for 1 wt% BCNC. CS and DTS improved up to 23%, and modulus of elasticity increased by 44%. CONCLUSIONS The addition of BCNCs to the RMGIC improved the mechanical properties, including CS, elastic modulus, and DTS. Thus, the newly developed RMGICs with BCNCs might represent an ideal and promising novel dental material in restorative dentistry.
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Affiliation(s)
- Marzieh Moradian
- Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohsen Nosrat Abadi
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Dana Jafarpour
- Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Saadat
- Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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21
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Sesame Oil ( Sesamum Indicum L.) as a New Challenge for Reinforcement of Conventional Glass Ionomer Cement, Could It Be? Int J Dent 2021; 2021:5516517. [PMID: 33824660 PMCID: PMC8007341 DOI: 10.1155/2021/5516517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/03/2021] [Accepted: 03/10/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose Despite the advantages of glass ionomer cement (GIC) including chemical bonding to the tooth structure and fluoride release, its low-grade mechanical properties make it a topic for research. Accordingly, this study was conducted to assess the ability of sesame oil as a natural bioactive additive to reinforce conventional glass ionomer cement. Materials and Methods Sesame oil was blended into the liquid component of the cement in ratios of 3 and 5 (v/v%). One control and two experimental groups were enrolled in the study; I: unmodified GIC (control), II: 3 (v/v%) sesame oil-modified GICs, and III: 5(v/v%) sesame oil-modified GICs. Compressive strength, shear bond strength, diametral tensile strength, surface microhardness, surface roughness, and color stability were the parameters assessed. A representative specimen of each group was analyzed for its chemical structure by Fourier transformation infrared spectroscopy. One-way ANOVA followed by Tukey test was used to analyze the collected data of all evaluated parameters except the color stability results, which were analyzed by Student t-test at p < 0.05. Results Three and 5 (v/v%) sesame oil-modified GICs exhibited significant increase in their compressive strength, shear bond strength, diametral strength, and surface microhardness. Concurrently, there was a significant decrease in surface roughness (p < 0.05) in both formulations of the modified cement. Both 3 and 5 (v/v%) sesame oil-modified GICs showed a clinically acceptable color change. Conclusions Sesame oil seems to be a promising natural bioactive product for reinforcement of conventional GIC with a clinically agreeable esthetic.
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Kusnoto J, Dwifulqi H, Tjandrawinata R. The effects of reinforced cellulose nanocrystals from sugarcane bagasse fiber on the hardness of glass ionomer cements. SCIENTIFIC DENTAL JOURNAL 2021. [DOI: 10.4103/sdj.sdj_53_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Cellulose Modification for Improved Compatibility with the Polymer Matrix: Mechanical Characterization of the Composite Material. MATERIALS 2020; 13:ma13235519. [PMID: 33287258 PMCID: PMC7729504 DOI: 10.3390/ma13235519] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/13/2020] [Accepted: 11/24/2020] [Indexed: 02/06/2023]
Abstract
The following article is the presentation attempt of cellulose hybrid chemical modification approach as a useful tool in improving the mechanical properties of plant fiber-filled polymer materials. The treatment process is a prolonged method of the cellulose maleinization and consists of two steps: 1. solvent exchange (altering fiber structure); 2. maleic anhydride (MA) chemical grafting (surface modification). Thanks to the incorporated treatment method, the created ethylene-norbornene copolymer composite specimen exhibited an improved performance, tensile strength at the level of (38.8 ± 0.8) MPa and (510 ± 20)% elongation at break, which is higher than for neat polymer matrix and could not be achieved in the case of regular MA treatment. Moreover, both the Payne effect and filler efficiency factor indicate a possibility of the fiber reinforcing nature that is not a common result. Additionally, the polymer matrix employed in this research is widely known for its excellent resistance to aqueous and polar organic media, good biocompatibility, and the ability to reproduce fine structures which makes it an interesting material regarding healthcare applications. Therefore, plant fiber-based polymer materials described in this research might be potentially applied in this area, e.g., medical devices, drug delivery, wearables, pharmaceutical blisters, and trays.
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Nunes JMFF, Farias IAP, Vieira CA, Ribeiro TM, Sampaio FC, Menezes VA. Antimicrobial activity and toxicity of glass ionomer cement containing an essential oil. ACTA ACUST UNITED AC 2020; 53:e9468. [PMID: 33146285 PMCID: PMC7643930 DOI: 10.1590/1414-431x20209468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 08/28/2020] [Indexed: 11/29/2022]
Abstract
The aim of this study was to evaluate the antimicrobial activity and toxicity of glass ionomer cement (GIC) modified with 5-methyl-2-(1-methylethyl)phenol (thymol) against Streptococcus mutans in silico and in vitro. The antimicrobial activity of thymol on GIC modified with concentrations of 2% (GIC-2) and 4% (GIC-4) was evaluated in a model of planktonic cell biofilm using agar diffusion test, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), dynamic biofilm (continuous flow cell parallel), and bacterial kinetics. Conventional GIC (GIC-0) was used as a control. Thymol toxicity was evaluated in Artemia salina and in silico using Osiris® software. Differences between groups were estimated by analysis of variance, followed by Tukey post hoc test, with a 5% significance level. The results of the agar diffusion test between groups were not significantly different (P≥0.05). Thymol had potential bacteriostatic and bactericidal activity against Streptococcus mutans with respect to planktonic growth, with MIC of 100 µg/mL and MBC of 400 µg/mL. The groups GIC-0, GIC-2, and GIC-4 reduced the biofilm by approximately 10, 85, and 95%, respectively. Bacterial kinetics showed efficiency of the modified GICs for up to 96 h. GIC with thymol was effective against S. mutans, with significant inhibition of the biofilms. Analyses in silico and using Artemia salina resulted in no relevant toxicity, suggesting potential for use in humans. GIC-2 was effective against S. mutans biofilm, with decreased cell viability.
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Affiliation(s)
- J M F F Nunes
- Laboratório de Biologia Bucal, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brasil
| | - I A P Farias
- Laboratório de Biologia Bucal, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brasil
| | - C A Vieira
- Laboratório de Biologia Bucal, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brasil
| | - T M Ribeiro
- Laboratório de Biologia Bucal, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brasil
| | - F C Sampaio
- Laboratório de Biologia Bucal, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brasil
| | - V A Menezes
- Departamento de Odontologia, Faculdade de Odontologia, Universidade de Pernambuco, Camaragibe, PE, Brasil
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Oznurhan F, Ozturk C. Evaluation of Polypropylene Fiber Reinforced Glass Ionomer Cement: A Comparative In-Vitro Study. JOURNAL OF ADVANCED ORAL RESEARCH 2020. [DOI: 10.1177/2320206820930490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Aim: To compare the surface roughness, microtensile bond strength (µTBS), and flexural strength of polypropylene (PP) fibers reinforced glass ionomer cements (GICs). Materials and Methods: A comparative in vitro study was designed to test the PP fiber reinforced GIC, which was formed when 0.5–1 mm length PP fibers were added into the powder of conventional GIC. Four groups were prepared (Group 1: control, Group 2: 1 wt% PP fiber, Group 3: 3 wt% PP fiber, and Group 4: 5 wt% PP fiber) to evaluate flexural strength, surface roughness values, and µTBS. A total of 10 samples with 25 × 2.5 × 5 mm dimensions were prepared for each group to test flexural strength. Disk-shaped specimens ( n = 10) of 2 mm thickness and 10 mm diameter were used to test surface roughness. A total of 24 human primary molar teeth were used to evaluate µTBS, and 12 sticks were obtained for each group. The fractured surface analyses of samples from µTBS was performed using scanning electron microscope. The data obtained from the experiments were recorded and analyzed with one-way analyses of variance technique, and the normality was tested using the Shapiro–Wilk technique. A significance level of .05 was used. Results: In flexural strength tests, Group 3 (3 wt% PP fiber) showed significantly increased values ( p < .05) when compared with other groups. Group 4 (5 wt% PP) showed significantly highest values in surface roughness tests ( p < .05). No significant differences were seen between the groups ( p > .05) according to µTBS results. More PP fibers were seen in fractured surfaces, when PP ratio increases. Conclusion: It was observed that increased PP fiber percentage showed increased surface roughness, and 3 wt% PP fiber gave optimal values for fracture toughness. Incorporation of PP fiber to GIC does not affect the bonding to primary tooth dentine.
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Affiliation(s)
- Fatih Oznurhan
- Department of Pediatric Dentistry, Faculty of Dentistry, Sivas Cumhuriyet University, Sivas, Turkey
| | - Ceren Ozturk
- Department of Pediatric Dentistry, Faculty of Dentistry, Sivas Cumhuriyet University, Sivas, Turkey
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Nicholson JW, Sidhu SK, Czarnecka B. Enhancing the Mechanical Properties of Glass-Ionomer Dental Cements: A Review. MATERIALS 2020; 13:ma13112510. [PMID: 32486416 PMCID: PMC7321445 DOI: 10.3390/ma13112510] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/20/2020] [Accepted: 05/26/2020] [Indexed: 11/18/2022]
Abstract
This paper reviews the strategies that have been reported in the literature to attempt to reinforce glass-ionomer dental cements, both conventional and resin-modified. These cements are widely used in current clinical practice, but their use is limited to regions where loading is not high. Reinforcement might extend these applications, particularly to the posterior dentition. A variety of strategies have been identified, including the use of fibres, nanoparticles, and larger particle additives. One problem revealed by the literature survey is the limited extent to which researchers have used International Standard test methods. This makes comparison of results very difficult. However, it does seem possible to draw conclusions from this substantial body of work and these are (1) that powders with conventional particle sizes do not reinforce glass-ionomer cements, (2) certain fibres and certain nanoparticles give distinct improvements in strength, and (3) in the case of the nanoparticles these improvements are associated with differences in the morphology of the cement matrix, in particular, a reduction in the porosity. Despite these improvements, none of the developments has yet been translated into clinical use.
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Affiliation(s)
- John W. Nicholson
- Dental Materials Unit, Bart’s and the London Institute of Dentistry, Queen Mary University of London, Mile End Road, London E1 4NS, UK
- Bluefield Centre for Biomaterials, 67-68 Hatton Garden, London EC1N 8JY, UK
- Correspondence:
| | - Sharanbir K. Sidhu
- Centre for Oral Bioengineering, Institute of Dentistry, Bart’s & The London School of Medicine and Dentistry, Queen Mary University of London, Turner Street, London E1 2AD, UK;
| | - Beata Czarnecka
- Department of Biomaterials and Experimental Dentistry, Poznań University of Medical Sciences, ul. Bukowska 70, 60-812 Poznań, Poland;
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Kantovitz KR, Fernandes FP, Feitosa IV, Lazzarini MO, Denucci GC, Gomes OP, Giovani PA, Moreira KMS, Pecorari VGA, Borges AFS, Nociti FH, Basting RT, Lisboa-Filho PN, Puppin-Rontani RM. TiO2 nanotubes improve physico-mechanical properties of glass ionomer cement. Dent Mater 2020; 36:e85-e92. [DOI: 10.1016/j.dental.2020.01.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 11/27/2019] [Accepted: 01/14/2020] [Indexed: 10/25/2022]
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Effect of cellulose nanofiber content on flexural properties of a model, thermoplastic, injection-molded, polymethyl methacrylate denture base material. J Mech Behav Biomed Mater 2020; 102:103513. [DOI: 10.1016/j.jmbbm.2019.103513] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 10/12/2019] [Accepted: 10/29/2019] [Indexed: 11/21/2022]
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Bao X, Liu F, He J. Preparation and Characterization of Glass Ionomer Cements with Added Carboxymethyl Chitosan. J MACROMOL SCI B 2020. [DOI: 10.1080/00222348.2020.1716486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Xiaozhen Bao
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - Fang Liu
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - Jingwei He
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, China
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Garoushi S, He J, Obradovic J, Fardim P, Vallittu PK, Lassila L. Incorporation of cellulose fiber in glass ionomer cement. Eur J Oral Sci 2020; 128:81-88. [DOI: 10.1111/eos.12668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Sufyan Garoushi
- Department of Biomaterials Science Turku Clinical Biomaterials Center – TCBC Institute of Dentistry University of Turku Turku Finland
| | - Jingwei He
- Department of Biomaterials Science Turku Clinical Biomaterials Center – TCBC Institute of Dentistry University of Turku Turku Finland
- College of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Jasmina Obradovic
- Department of Fibre and Cellulose Technology Åbo Akademi Turku Finland
| | - Pedro Fardim
- Department of Fibre and Cellulose Technology Åbo Akademi Turku Finland
- Department of Chemical Engineering KU Leuven Belgium
| | - Pekka K. Vallittu
- Department of Biomaterials Science Turku Clinical Biomaterials Center – TCBC Institute of Dentistry University of Turku Turku Finland
- City of Turku Welfare Division Oral Health Care Turku Finland
| | - Lippo Lassila
- Department of Biomaterials Science Turku Clinical Biomaterials Center – TCBC Institute of Dentistry University of Turku Turku Finland
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31
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Experimental composites of polyacrilonitrile-electrospun nanofibers containing nanocrystal cellulose. Dent Mater 2019; 35:e286-e297. [DOI: 10.1016/j.dental.2019.08.107] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 08/15/2019] [Accepted: 08/30/2019] [Indexed: 11/22/2022]
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Effects of Powdery Cellulose Nanofiber Addition on the Properties of Glass Ionomer Cement. MATERIALS 2019; 12:ma12193077. [PMID: 31547222 PMCID: PMC6803938 DOI: 10.3390/ma12193077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 11/17/2022]
Abstract
In this study, we aimed to evaluate the effect of the addition of powdery cellulose nanofibers (CNFs) on the mechanical properties of glass ionomer cement (GIC) without negatively affecting its chemical properties. Commercial GIC was reinforced with powdery CNFs (2–8 wt.%) and characterized in terms of flexural strength, compressive strength, diametral tensile strength, and fluoride-ion release properties. Powdery CNFs and samples subjected to flexural strength testing were observed via scanning electron microscopy. CNF incorporation was found to significantly improve the flexural, compressive, and diametral tensile strengths of GIC, and the corresponding composite was shown to contain fibrillar aggregates of nanofibers interspersed in the GIC matrix. No significant differences in fluoride-ion release properties were observed between the control GIC and the CNF-GIC composite. Thus, powdery CNFs were concluded to be a promising GIC reinforcement agent.
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Lang O, Kohidai L, Kohidai Z, Dobo-Nagy C, Csomo KB, Lajko M, Mozes M, Keki S, Deak G, Tian KV, Gresz V. Cell physiological effects of glass ionomer cements on fibroblast cells. Toxicol In Vitro 2019; 61:104627. [PMID: 31419507 DOI: 10.1016/j.tiv.2019.104627] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/09/2019] [Accepted: 08/12/2019] [Indexed: 10/26/2022]
Abstract
The cytotoxicity of glass ionomer cements (GICs) was investigated using a novel, cost-effective, easy-to-perform and standardized test. GIC rings were made using in-house designed, custom-made moulds under sterile conditions; 10 with Fuji Equia and 10 with Fuji Triage capsules, placed in direct contact with primary human gingival fibroblasts (HGF) and immortalized human fibroblasts (HFF1). On day 1, 4, 14 and 21, an AlamarBlue® (resazurin) assay was completed towards determining the effects of the GICs on metabolic activities of the cells, whilst cell morphology was examined by light microscopy. The influence of the compounds released from the GIC rings on cell physiological effects (viability, proliferation and adhesion) during 24 h incubation was further investigated by impedimetry. Result trends obtained from this battery of techniques were complementary. At 100 v/v% concentration, the released compounds from Equia were strongly cytotoxic, while at lower concentration (0, 4, 20 v/v%) they were not cytotoxic. In contrast, Triage elicited only slightly transient cytotoxicity. The method proposed has been proved as being efficient, reliable and reproducible and may be useful in quick testing of the cytotoxicity of similar biomaterials by using an immortalized cell line.
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Affiliation(s)
- Orsolya Lang
- Chemotaxis Research Group, Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvarad ter 4., H-1089 Budapest, Hungary
| | - Laszlo Kohidai
- Chemotaxis Research Group, Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvarad ter 4., H-1089 Budapest, Hungary
| | - Zsofia Kohidai
- Chemotaxis Research Group, Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvarad ter 4., H-1089 Budapest, Hungary; Department of Oral Diagnostics, Semmelweis University, Szentkiralyi utca 47., H-1088 Budapest, Hungary
| | - Csaba Dobo-Nagy
- Department of Oral Diagnostics, Semmelweis University, Szentkiralyi utca 47., H-1088 Budapest, Hungary; Materials Science Research Institute, Faculty of Dentistry, Semmelweis University, Szentkiralyi utca 47., H-1088 Budapest, Hungary.
| | - Krisztian B Csomo
- Department of Oral Diagnostics, Semmelweis University, Szentkiralyi utca 47., H-1088 Budapest, Hungary
| | - Mira Lajko
- Department of Oral Diagnostics, Semmelweis University, Szentkiralyi utca 47., H-1088 Budapest, Hungary
| | - Miklos Mozes
- Institute of Pathophysiology, Semmelweis University, Nagyvarad ter 4., H-1089 Budapest, Hungary
| | - Sandor Keki
- Department of Applied Chemistry, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary.
| | - Gyorgy Deak
- Department of Applied Chemistry, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary.
| | - Kun V Tian
- Materials Science Research Institute, Faculty of Dentistry, Semmelweis University, Szentkiralyi utca 47., H-1088 Budapest, Hungary; Department of Chemical Science and Technologies, NAST Center, University of Rome Tor Vergata, Rome, Italy
| | - Veronika Gresz
- Department of Oral Diagnostics, Semmelweis University, Szentkiralyi utca 47., H-1088 Budapest, Hungary.
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Moheet IA, Luddin N, Rahman IA, Kannan TP, Nik Abd Ghani NR, Masudi SM. Modifications of Glass Ionomer Cement Powder by Addition of Recently Fabricated Nano-Fillers and Their Effect on the Properties: A Review. Eur J Dent 2019; 13:470-477. [PMID: 31280484 PMCID: PMC6890502 DOI: 10.1055/s-0039-1693524] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The aim of this article is to provide a brief insight regarding the recent studies and their recommendations related to the modifications to glass ionomer cement (GIC) powder in order to improve their properties. An electronic search of publications was made from the year 2000 to 2018. The databases included in the current study were EBSCOhost, PubMed, and ScienceDirect. The inclusion criteria for the current study include publication with abstract or full-text articles, original research, reviews or systematic reviews, in vitro, and in vivo studies that were written in English language. Among these only articles published in peer-reviewed journals were included. Articles published in other languages, with no available abstract and related to other nondentistry fields, were excluded. A detailed review of the recent materials used as a filler phase in GIC powder has revealed that not all modifications produce beneficial results. Recent work has demonstrated that modification of GIC powder with nano-particles has many beneficial effects on the properties of the material. This is due to the increase in surface area and surface energy, along with better particle distribution of the nano-particle. Therefore, more focus should be given on nano-particle having greater chemical affinity for GIC matrix as well as the tooth structure that will enhance the physicochemical properties of GIC.
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Affiliation(s)
- Imran Alam Moheet
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Norhayati Luddin
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Ismail Ab Rahman
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | | | | | - Saman Malik Masudi
- Department of Restorative Dentistry, Lincoln University College, Selangor, Malaysia
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Leal IL, Silva Rosa YC, Silva Penha J, Cruz Correia PR, Silva Melo P, Guimarães DH, Barbosa JDV, Druzian JI, Machado BAS. Development and application starch films: PBAT with additives for evaluating the shelf life of Tommy Atkins mango in the fresh‐cut state. J Appl Polym Sci 2019. [DOI: 10.1002/app.48150] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ingrid Lessa Leal
- Department of Food and BiotechnologyUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
- Food Science Program, Pharmacy FacultyFederal University of Bahia, Ademar de Barros Avenue, Ondina 40170‐115 Salvador Bahia Brazil
| | - Yasmin Carolino Silva Rosa
- Department of Food and BiotechnologyUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
| | - Josenai Silva Penha
- Department of Food and BiotechnologyUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
| | - Paulo Romano Cruz Correia
- Food Science Program, Pharmacy FacultyFederal University of Bahia, Ademar de Barros Avenue, Ondina 40170‐115 Salvador Bahia Brazil
| | - Pollyana Silva Melo
- Department of Materials EngineeringUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
| | - Danilo Hansen Guimarães
- Department of Materials EngineeringUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
| | - Josiane Dantas Viana Barbosa
- Health Institute of TechnologyUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
| | - Janice Izabel Druzian
- Food Science Program, Pharmacy FacultyFederal University of Bahia, Ademar de Barros Avenue, Ondina 40170‐115 Salvador Bahia Brazil
| | - Bruna Aparecida Souza Machado
- Department of Food and BiotechnologyUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
- Health Institute of TechnologyUniversity Center SENAI/CIMATEC, National Service of Industrial Learning – SENAI, Orlando Gomes Avenue, 1845 ‐ Piatã 41650‐010 Salvador Bahia Brazil
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Menezes-Silva R, Cabral RN, Pascotto RC, Borges AFS, Martins CC, Navarro MFDL, Sidhu SK, Leal SC. Mechanical and optical properties of conventional restorative glass-ionomer cements - a systematic review. J Appl Oral Sci 2019; 27:e2018357. [PMID: 30810640 PMCID: PMC6382318 DOI: 10.1590/1678-7757-2018-0357] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/20/2018] [Indexed: 12/05/2022] Open
Abstract
Objectives To perform a systematic review of test methodologies on conventional restorative glass-ionomer cement (GIC) materials for mechanical and optical properties to compare the results between different GICs. Material and Methods Screening of titles and abstracts, data extraction, and quality assessments of full-texts were conducted in search for in vitro studies on conventional GICs that follow the relevant specifications of ISO standards regarding the following mechanical and optical properties: compressive strength, flexural strength, color, opacity and radiopacity. Sources The Latin American and Caribbean Health Sciences (LILACS), Brazilian Bibliography of Dentistry (BBO) databases from Latin-American and Caribbean System on Health Sciences Information (BIREME) and PubMed/Medline (US National Library of Medicine - National Institutes of Health) databases were searched regardless of language. Altogether, 1146 in vitro studies were selected. Two reviewers independently selected and assessed the articles according to pre-established inclusion/exclusion criteria. Among all the properties investigated, only one study was classified as being of fair quality that tested compressive strength and was included. It was observed that many authors had not strictly followed ISO recommendations and that, for some properties (diametral tensile strength and microhardness), there are no guidelines provided. Conclusions It was not possible to compare the results for the mechanical and optical properties of conventional restorative GICs due to the lack of standardization of studies.
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Affiliation(s)
- Rafael Menezes-Silva
- Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | | | | | - Ana Flávia Sanches Borges
- Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - Carolina Castro Martins
- Faculdade de Odontologia da Universidade Federal de Minas Gerais, Departamento de Odontopediatria e Ortodontia, Belo Horizonte, MG, Brasil
| | - Maria Fidela de Lima Navarro
- Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, SP, Brasil
| | - Sharanbir K Sidhu
- Queen Mary University of London, Institute of Dentistry, London, United Kingdom
| | - Soraya Coelho Leal
- Universidade de Brasília, Departamento de Odontologia, Brasília, DF, Brasil
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Menezes-Silva R, de Oliveira BMB, Fernandes PHM, Shimohara LY, Pereira FV, Borges AFS, Buzalaf MAR, Pascotto RC, Sidhu SK, de Lima Navarro MF. Effects of the reinforced cellulose nanocrystals on glass-ionomer cements. Dent Mater 2019; 35:564-573. [PMID: 30711272 DOI: 10.1016/j.dental.2019.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 12/31/2018] [Accepted: 01/11/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Glass-ionomer cements (GICs) modified with cellulose nanocrystals (CNs) were characterized and evaluated for compressive strength (CS), diametral tensile strength (DTS) and fluoride release (F-). METHODS Commercially available GICs (Maxxion, Vidrion R, Vitro Molar, Ketac Molar Easy Mix and Fuji Gold Label 9) were reinforced with CNs (0.2% by weight). The microstructure of CNs and of CN-modified GICs were evaluated by transmission electron microscopy (TEM) and by scanning electron microscopy (SEM) while chemical characterization was by Fourier transform infrared spectroscopy (FTIR). Ten specimens each of the unmodified (control) and CN-modified materials (test materials) were prepared for CS and DTS testing. For the fluoride release evaluation, separate specimens (n=10) of each test and control material were made. The results obtained were submitted to the t-test (p<0.05). RESULTS The CN reinforcement significantly improved the mechanical properties and significantly increased the F- release of all GICs (p<0.05). The GICs with CNs showed a fibrillar aggregate of nanoparticles interspersed in the matrix. The compounds with CNs showed a higher amount of C compared to the controls due to the organic nature of the CNs. It was not possible to identify by FTIR any chemical bond difference in the compounds formed when nanofibers were inserted in the GICs. SIGNIFICANCE Modification of GICs with CNs appears to produce promising restorative materials.
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Affiliation(s)
- Rafael Menezes-Silva
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil.
| | | | - Paulo Henrique Martins Fernandes
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Lívia Yukari Shimohara
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Fabiano Vargas Pereira
- Department of Chemistry, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil
| | - Ana Flávia Sanches Borges
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Marília Afonso Rabelo Buzalaf
- Department of Biological Sciences, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
| | - Renata Corrêa Pascotto
- Department of Dentistry, State University of Maringa, Av. Mandacaru, 1550, 87080-000, Maringá, PR, Brazil
| | - Sharanbir K Sidhu
- Institute of Dentistry, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, Turner Street, London, E1 2AD, UK
| | - Maria Fidela de Lima Navarro
- Department of Dental Materials, Endodontics and Operative Dentistry, Bauru School of Dentistry-FOB-USP, Al. Octávio Pinheiro Brisolla, 9-75, 17012-901, Bauru, SP, Brazil
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Nanocellulose Composite Biomaterials in Industry and Medicine. BIOLOGICALLY-INSPIRED SYSTEMS 2019. [DOI: 10.1007/978-3-030-12919-4_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Wang Y, Hua H, Li W, Wang R, Jiang X, Zhu M. Strong antibacterial dental resin composites containing cellulose nanocrystal/zinc oxide nanohybrids. J Dent 2019; 80:23-29. [DOI: 10.1016/j.jdent.2018.11.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/26/2018] [Accepted: 11/06/2018] [Indexed: 12/28/2022] Open
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40
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Ching HS, Luddin N, Kannan TP, Ab Rahman I, Abdul Ghani NRN. Modification of glass ionomer cements on their physical-mechanical and antimicrobial properties. J ESTHET RESTOR DENT 2018; 30:557-571. [PMID: 30394667 DOI: 10.1111/jerd.12413] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 06/11/2018] [Indexed: 01/21/2023]
Abstract
OBJECTIVE The aim of this review was to provide an insight about the factors affecting the properties of glass ionomer cements and provides a review regarding studies that are related to modification of glass ionomer cements to improve their properties, particularly on physical-mechanical and antimicrobial activity. METHODS PubMed and Science Direct were searched for papers published between the years 1974 and 2018. The search was restricted to articles written in English related to modification of glass ionomer cements. Only articles published in peer-reviewed journals were included. The search included literature reviews, in vitro, and in vivo studies. Articles written in other languages, without available abstracts and those related to other field were excluded. About 198 peer-review articles in the English language were reviewed. CONCLUSION Based on the finding, most of the modification has improved physical-mechanical properties of glass ionomer cements. Recently, researchers have attempted to improve their antimicrobial properties. However, the attempts were reported to compromise the physical-mechanical properties of modified glass ionomer cements. CLINICAL SIGNIFICANCE As the modification of glass ionomer cement with different material improved the physical-mechanical and antimicrobial properties, it could be used as restorative material for wider application in dentistry.
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Affiliation(s)
- Hii S Ching
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Norhayati Luddin
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Thirumulu P Kannan
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia.,Human Genome Centre, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Ismail Ab Rahman
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Nik R N Abdul Ghani
- School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Tayeb AH, Amini E, Ghasemi S, Tajvidi M. Cellulose Nanomaterials-Binding Properties and Applications: A Review. Molecules 2018; 23:E2684. [PMID: 30340374 PMCID: PMC6222763 DOI: 10.3390/molecules23102684] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/03/2018] [Accepted: 10/13/2018] [Indexed: 02/07/2023] Open
Abstract
Cellulose nanomaterials (CNs) are of increasing interest due to their appealing inherent properties such as bio-degradability, high surface area, light weight, chirality and the ability to form effective hydrogen bonds across the cellulose chains or within other polymeric matrices. Extending CN self-assembly into multiphase polymer structures has led to useful end-results in a wide spectrum of products and countless innovative applications, for example, as reinforcing agent, emulsion stabilizer, barrier membrane and binder. In the current contribution, after a brief description of salient nanocellulose chemical structure features, its types and production methods, we move to recent advances in CN utilization as an ecofriendly binder in several disparate areas, namely formaldehyde-free hybrid composites and wood-based panels, papermaking/coating processes, and energy storage devices, as well as their potential applications in biomedical fields as a cost-effective and tissue-friendly binder for cartilage regeneration, wound healing and dental repair. The prospects of a wide range of hybrid materials that may be produced via nanocellulose is introduced in light of the unique behavior of cellulose once in nano dimensions. Furthermore, we implement some principles of colloidal and interfacial science to discuss the critical role of cellulose binding in the aforesaid fields. Even though the CN facets covered in this study by no means encompass the great amount of literature available, they may be regarded as the basis for future developments in the binder applications of these highly desirable materials.
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Affiliation(s)
- Ali H Tayeb
- School of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, ME 04469, USA.
- Advanced Structures and Composites Center, University of Maine, 35 Flagstaff Road, Orono, ME 04469, USA.
| | - Ezatollah Amini
- School of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, ME 04469, USA.
| | - Shokoofeh Ghasemi
- School of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, ME 04469, USA.
| | - Mehdi Tajvidi
- School of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, ME 04469, USA.
- Advanced Structures and Composites Center, University of Maine, 35 Flagstaff Road, Orono, ME 04469, USA.
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Menezes-Silva R, Pereira FV, Santos MH, Soares JA, Soares SMCS, Miranda JLD. Biocompatibility of a New Dental Glass Ionomer Cement with Cellulose Microfibers and Cellulose Nanocrystals. Braz Dent J 2018; 28:172-178. [PMID: 28492746 DOI: 10.1590/0103-6440201701059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/04/2017] [Indexed: 11/22/2022] Open
Abstract
Developing new restorative materials should avoid damage to tissue structures. This study evaluated the biocompatibility of a commercial dental glass ionomer cement (GIC) mechanically reinforced with cellulose microfibers (GIC+CM) or cellulose nanocrystals (GIC+CN) by implantation of three test specimens in subcutaneous tissue in the dorsal region of 15 Rattus norvegicus albinus rats. Each rat received one specimen of each cement, resulting in the following groups (n=15): Group GIC (Control), Group GIC+CM and Group GIC+NC. After time intervals of 7, 30 and 60 days, the animals were sacrificed and the following aspects were histologically evaluated: type of inflammatory cells, fibroblasts, blood vessels, macrophages, giant cells, type of inflammatory reaction and capsule thickness (µm). These events were scored as (-) absent, (+) light, (++) moderate and (+++) intense. The results were statistically analyzed by Kruskal-Wallis test and Mann-Whitney post test. At 7 days, Group GIC+NC showed more favorable tissue repair because quantitatively there were more fibroblasts (p=0.022), fewer macrophages (p=0.008) and mononuclear cells (p=0.033). Polymorphonuclear neutrophils and giant cells were absent in all experimental periods. At 60 days, test specimens in Group GIC+NC were surrounded by a fibrous tissue capsule with reduced thickness (26.72±2.87 µm) in comparison with Group GIC+CM (41.21±3.98 µm) (p=0.025). In general, all biomaterials showed satisfactory biocompatibility, but glass ionomer cement modified with cellulose nanocrystals showed a more advanced tissue repair.
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Affiliation(s)
- Rafael Menezes-Silva
- Department of Dentistry, Endodontics and Dental Materials, Bauru Dental School, USP - Universidade de São Paulo, Bauru, SP, Brazil
| | - Fabiano Vargas Pereira
- Department of Chemistry, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria Helena Santos
- Biomaterials Advanced Center - BioMat, UFVJM - Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Janir Alves Soares
- Department of Dentistry, UFVJM - Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | | | - João Luiz de Miranda
- Department of Basic and Health Sciences, UFVJM - Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
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Cerqueira JC, Penha JDS, Oliveira RS, Guarieiro LLN, Melo PDS, Viana JD, Machado BAS. Production of biodegradable starch nanocomposites using cellulose nanocrystals extracted from coconut fibers. POLIMEROS 2017. [DOI: 10.1590/0104-1428.05316] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Halib N, Perrone F, Cemazar M, Dapas B, Farra R, Abrami M, Chiarappa G, Forte G, Zanconati F, Pozzato G, Murena L, Fiotti N, Lapasin R, Cansolino L, Grassi G, Grassi M. Potential Applications of Nanocellulose-Containing Materials in the Biomedical Field. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E977. [PMID: 28825682 PMCID: PMC5578343 DOI: 10.3390/ma10080977] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/11/2017] [Accepted: 08/16/2017] [Indexed: 02/06/2023]
Abstract
Because of its high biocompatibility, bio-degradability, low-cost and easy availability, cellulose finds application in disparate areas of research. Here we focus our attention on the most recent and attractive potential applications of cellulose in the biomedical field. We first describe the chemical/structural composition of cellulose fibers, the cellulose sources/features and cellulose chemical modifications employed to improve its properties. We then move to the description of cellulose potential applications in biomedicine. In this field, cellulose is most considered in recent research in the form of nano-sized particle, i.e., nanofiber cellulose (NFC) or cellulose nanocrystal (CNC). NFC is obtained from cellulose via chemical and mechanical methods. CNC can be obtained from macroscopic or microscopic forms of cellulose following strong acid hydrolysis. NFC and CNC are used for several reasons including the mechanical properties, the extended surface area and the low toxicity. Here we present some potential applications of nano-sized cellulose in the fields of wound healing, bone-cartilage regeneration, dental application and different human diseases including cancer. To witness the close proximity of nano-sized cellulose to the practical biomedical use, examples of recent clinical trials are also reported. Altogether, the described examples strongly support the enormous application potential of nano-sized cellulose in the biomedical field.
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Affiliation(s)
- Nadia Halib
- Department of Basic Sciences & Oral Biology, Faculty of Dentistry, Universiti Sains Islam Malaysia, Level 15, Tower B, Persiaran MPAJ, Jalan Pandan Utama, Kuala Lumpur 55100, Malaysia;.
| | - Francesca Perrone
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Strada di Fiume 447, I-34149 Trieste, Italy.
| | - Maja Cemazar
- Institute of Oncology Ljubljana, Zaloska 2, SI-1000 Ljubljana, Slovenia.
| | - Barbara Dapas
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Strada di Fiume 447, I-34149 Trieste, Italy.
| | - Rossella Farra
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Michela Abrami
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Gianluca Chiarappa
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Giancarlo Forte
- Center for Translational Medicine, International Clinical Research Center, St. Anne's University Hospital, Pekarska 53, 656 91 Brno, Czech Republic.
| | - Fabrizio Zanconati
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Gabriele Pozzato
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Luigi Murena
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Nicola Fiotti
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Romano Lapasin
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Laura Cansolino
- Department of Clinico-Surgical Sciences, Experimental Surgery Laboratory, University of Pavia and IRCCS S, Matteo Hospital Pavia, 27100 Pavia, Italy.
| | - Gabriele Grassi
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Strada di Fiume 447, I-34149 Trieste, Italy.
| | - Mario Grassi
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
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Novel Nanotechnology of TiO 2 Improves Physical-Chemical and Biological Properties of Glass Ionomer Cement. Int J Biomater 2017; 2017:7123919. [PMID: 28611845 PMCID: PMC5458382 DOI: 10.1155/2017/7123919] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 04/01/2017] [Accepted: 04/06/2017] [Indexed: 11/17/2022] Open
Abstract
The aim of this study was to assess the performance of glass ionomer cement (GIC) added with TiO2 nanotubes. TiO2 nanotubes [3%, 5%, and 7% (w/w)] were incorporated into GIC's (Ketac Molar EasyMix™) powder component, whereas unblended powder was used as control. Physical-chemical-biological analysis included energy dispersive spectroscopy (EDS), surface roughness (SR), Knoop hardness (SH), fluoride-releasing analysis, cytotoxicity, cell morphology, and extracellular matrix (ECM) composition. Parametric or nonparametric ANOVA were used for statistical comparisons (α ≤ 0.05). Data analysis revealed that EDS only detected Ti at the 5% and 7% groups and that GIC's physical-chemical properties were significantly improved by the addition of 5% TiO2 as compared to 3% and GIC alone. Furthermore, regardless of TiO2 concentration, no significant effect was found on SR, whereas GIC-containing 7% TiO2 presented decreased SH values. Fluoride release lasted longer for the 5% and 7% TiO2 groups, and cell morphology/spreading and ECM composition were found to be positively affected by TiO2 at 5%. In conclusion, in the current study, nanotechnology incorporated in GIC affected ECM composition and was important for the superior microhardness and fluoride release, suggesting its potential for higher stress-bearing site restorations.
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Castro AGB, Polini A, Azami Z, Leeuwenburgh SCG, Jansen JA, Yang F, van den Beucken JJJP. Incorporation of PLLA micro-fillers for mechanical reinforcement of calcium-phosphate cement. J Mech Behav Biomed Mater 2017; 71:286-294. [PMID: 28376362 DOI: 10.1016/j.jmbbm.2017.03.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 03/18/2017] [Accepted: 03/26/2017] [Indexed: 01/09/2023]
Abstract
Calcium phosphate cements (CPCs) are biocompatible, resorbable, injectable and osteoconductive. Those properties render such materials suitable for applications where bone repair and regeneration is required However, their brittle nature limits their application only to non-load-bearing applications. The incorporation of long polymeric fibers can improve the mechanical properties of CPCs, but aggregation is a major problem. Instead, short polymeric fillers can be easily dispersed in the cement matrix, but their reinforcing effect has not been studied yet. In this study, continuous poly-L-lactic acid fibers (PLLA) with a smooth or porous surface morphology were prepared by electrospinning. PLLA micro-fillers were developed, by means of an aminolysis process, and added to α-TCP or α-TCP/PLGA-based cements. Micro-filler distribution as well as the morphology, cohesiveness, setting times and mechanical properties were evaluated. PLLA micro-fillers were homogeneously dispersed throughout the cement while the handling properties were not significantly affected. A decrease in the initial setting times was observed when PLLA was added, while the mechanical properties were comparable to those of the α-TPC or α-TCP/PLGA compositions.
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Affiliation(s)
- Antonio G B Castro
- Department of Biomaterials, Radboudumc, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
| | - Alessandro Polini
- Department of Biomaterials, Radboudumc, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
| | - Zohal Azami
- Department of Biomaterials, Radboudumc, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
| | - Sander C G Leeuwenburgh
- Department of Biomaterials, Radboudumc, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
| | - John A Jansen
- Department of Biomaterials, Radboudumc, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
| | - Fang Yang
- Department of Biomaterials, Radboudumc, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
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Cárdenas W, Gómez-Pachon EY, Muñoz E, Vera-Graziano R. Preparation of potato starch microfibers obtained by electro wet spinning. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1757-899x/138/1/012001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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