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Yu H, Yan Z, Dreiss CA, Gaitano GG, Jarvis JA, Gentleman E, da Silva RMP, Grigoriadis AE. Injectable PEG Hydrogels with Tissue-Like Viscoelasticity Formed through Reversible Alendronate-Calcium Phosphate Crosslinking for Cell-Material Interactions. Adv Healthc Mater 2024:e2400472. [PMID: 38809180 DOI: 10.1002/adhm.202400472] [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: 02/06/2024] [Indexed: 05/30/2024]
Abstract
Synthetic hydrogels provide controllable 3D environments, which can be used to study fundamental biological phenomena. The growing body of evidence that cell behavior depends upon hydrogel stress relaxation creates a high demand for hydrogels with tissue-like viscoelastic properties. Here, a unique platform of synthetic polyethylene glycol (PEG) hydrogels in which star-shaped PEG molecules are conjugated with alendronate and/or RGD peptides, attaining modifiable degradability as well as flexible cell adhesion, is created. Novel reversible ionic interactions between alendronate and calcium phosphate nanoparticles, leading to versatile viscoelastic properties with varying initial elastic modulus and stress relaxation time, are identified. This new crosslinking mechanism provides shear-thinning properties resulting in differential cellular responses between cancer cells and stem cells. The novel hydrogel system is an improved design to the other ionic crosslink platforms and opens new avenues for the development of pathologically relevant cancer models, as well as minimally invasive approaches for cell delivery for potential regenerative therapies.
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Affiliation(s)
- Hongqiang Yu
- Centre for Craniofacial and Regenerative Biology, King's College London, London, UK
| | - Ziqian Yan
- Centre for Craniofacial and Regenerative Biology, King's College London, London, UK
| | - Cecile A Dreiss
- Institute of Pharmaceutical Science, King's College London, London, SE1 9NH, UK
| | - Gustavo G Gaitano
- Department of Chemistry, University of Navarra, Pamplona, 31080, Spain
| | - James A Jarvis
- Randall Division of Cell and Molecular Biophysics and NMR Facility, Centre for Biomolecular Spectroscopy, King's College London, London, SE1 1UL, UK
| | - Eileen Gentleman
- Centre for Craniofacial and Regenerative Biology, King's College London, London, UK
| | - Ricardo M P da Silva
- Centre for Craniofacial and Regenerative Biology, King's College London, London, UK
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Ranganathan P, Sugumaran V, Purushothaman B, Rajendran AR, Subramanian B. Rapidly derived equimolar Ca: P phasic bioactive glass infused flexible gelatin multi-functional scaffolds - A promising tissue engineering. J Mech Behav Biomed Mater 2024; 150:106264. [PMID: 38029463 DOI: 10.1016/j.jmbbm.2023.106264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 12/01/2023]
Abstract
The study aims to design and fabricate an ultra-easier multi-functional biomedical polymeric scaffold loaded with unique equimolar Ca:P phasic bioactive glass material (BG). Gelatin (G) - 45S5 bioactive glass (BG) scaffolds were synthesized via a simple laboratory refrigerator with higher biocompatibility and cytocompatibility. The results proved that BG has enhanced bio-mineralization of the scaffolds and results support that the G: BG (1:2) ratio is the more appropriate composition. Brunauer-Emmett-Teller (BET) study confirms the higher surface area for pure Gelatin and G: BG (1:2). Scanning Electron Microscopic images display the precipitation of hydroxycarbonate apatite layer over the scaffolds on immersing it in simulated body fluid. Alkaline phosphate activity proved that G: BG (1:2) scaffold could induce mitogenesis in MG-63 osteoblast cells, thus helping in hard tissue regeneration. Sirius red collagen deposition showed that higher content bioactive glass incorporated Gelatin polymeric scaffold G: BG (1:2) could induce rapid collagen secretion of NIH 3T3 fibroblast cell line that could help in soft tissue regeneration and earlier wound healing. The scaffolds were also tested for cell viability using NIH 3T3 fibroblast cell lines and MG 63 osteoblastic cell lines through methyl thiazolyl tetrazolium (MTT) assay. Thus, the study shows a scaffold of appropriate composition G: BG (1:2) can be a multifunctional material to regenerate hard and soft tissues.
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Affiliation(s)
- Priya Ranganathan
- National Centre for Nanoscience and Nanotechnology, University of Madras, Guindy Campus, Chennai 600 025, India; Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, South Korea
| | - Vijayakumari Sugumaran
- National Centre for Nanoscience and Nanotechnology, University of Madras, Guindy Campus, Chennai 600 025, India
| | - Bargavi Purushothaman
- Department of Oral Pathology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Vellapanchavadi, Chennai 600077, India
| | - Ajay Rakkesh Rajendran
- Functional Nano-Materials (FuN) Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Balakumar Subramanian
- National Centre for Nanoscience and Nanotechnology, University of Madras, Guindy Campus, Chennai 600 025, India.
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Dorozhkin SV. Calcium Orthophosphate (CaPO4)-Based Bioceramics: Preparation, Properties, and Applications. COATINGS 2022; 12:1380. [DOI: 10.3390/coatings12101380] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Various types of materials have been traditionally used to restore damaged bones. In the late 1960s, a strong interest was raised in studying ceramics as potential bone grafts due to their biomechanical properties. A short time later, such synthetic biomaterials were called bioceramics. Bioceramics can be prepared from diverse inorganic substances, but this review is limited to calcium orthophosphate (CaPO4)-based formulations only, due to its chemical similarity to mammalian bones and teeth. During the past 50 years, there have been a number of important achievements in this field. Namely, after the initial development of bioceramics that was just tolerated in the physiological environment, an emphasis was shifted towards the formulations able to form direct chemical bonds with the adjacent bones. Afterwards, by the structural and compositional controls, it became possible to choose whether the CaPO4-based implants would remain biologically stable once incorporated into the skeletal structure or whether they would be resorbed over time. At the turn of the millennium, a new concept of regenerative bioceramics was developed, and such formulations became an integrated part of the tissue engineering approach. Now, CaPO4-based scaffolds are designed to induce bone formation and vascularization. These scaffolds are usually porous and harbor various biomolecules and/or cells. Therefore, current biomedical applications of CaPO4-based bioceramics include artificial bone grafts, bone augmentations, maxillofacial reconstruction, spinal fusion, and periodontal disease repairs, as well as bone fillers after tumor surgery. Prospective future applications comprise drug delivery and tissue engineering purposes because CaPO4 appear to be promising carriers of growth factors, bioactive peptides, and various types of cells.
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Evaluation of the Feasibility of NaCaPO 4-Blended Zirconia as a New CAD/CAM Material for Dental Restoration. MATERIALS 2021; 14:ma14143819. [PMID: 34300737 PMCID: PMC8305376 DOI: 10.3390/ma14143819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 11/21/2022]
Abstract
The computer-aided design/computer-aided manufacturing (CAD/CAM) fabrication technique has become one of the hottest topics in the dental field. This technology can be applied to fixed partial dentures, removable dentures, and implant prostheses. This study aimed to evaluate the feasibility of NaCaPO4-blended zirconia as a new CAD/CAM material. Eleven different proportional samples of zirconia and NaCaPO4 (xZyN) were prepared and characterized by X-ray diffractometry (XRD) and Vickers microhardness, and the milling property of these new samples was tested via a digital optical microscope. After calcination at 950 °C for 4 h, XRD results showed that the intensity of tetragonal ZrO2 gradually decreased with an increase in the content of NaCaPO4. Furthermore, with the increase in NaCaPO4 content, the sintering became more obvious, which improved the densification of the sintered body and reduced its porosity. Specimens went through milling by a computer numerical control (CNC) machine, and the marginal integrity revealed that being sintered at 1350 °C was better than being sintered at 950 °C. Moreover, 7Z3N showed better marginal fit than that of 6Z4N among thirty-six samples when sintered at 1350 °C (p < 0.05). The milling test results revealed that 7Z3N could be a new CAD/CAM material for dental restoration use in the future.
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Oliveira RLMS, Barbosa L, Hurtado CR, Ramos LDP, Montanheiro TLA, Oliveira LD, Tada DB, Trichês EDS. Bioglass‐based scaffolds coated with silver nanoparticles: Synthesis, processing and antimicrobial activity. J Biomed Mater Res A 2020; 108:2447-2459. [DOI: 10.1002/jbm.a.36996] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/30/2020] [Accepted: 04/04/2020] [Indexed: 12/27/2022]
Affiliation(s)
| | - Lucas Barbosa
- Bioceramics Laboratory, Science and Technology Institute UNIFESP São José dos Campos SP Brazil
| | - Carolina R. Hurtado
- Nanomaterials and Nanotoxicology Laboratory, Science and Technology Institute UNIFESP São José dos Campos SP Brazil
- IFSP São José dos Campos SP Brazil
| | - Lucas de P. Ramos
- Science and Technology Institute UNESP São José dos Campos SP Brazil
| | | | | | - Dayane B. Tada
- Nanomaterials and Nanotoxicology Laboratory, Science and Technology Institute UNIFESP São José dos Campos SP Brazil
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Technological Challenges of Phosphorus Removal in High-Phosphorus Ores: Sustainability Implications and Possibilities for Greener Ore Processing. SUSTAINABILITY 2019. [DOI: 10.3390/su11236787] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
With the present rates of iron ore consumption, currently unusable, high-phosphorus iron ore deposits are likely to be the iron ores of the future as higher-grade iron ore reserves are depleted. Consequently, the design and timely development of environmentally-benign processes for the simultaneous beneficiation of high-phosphorus iron ores and phosphorus recovery, currently a technological challenge, might soon become a sustainability challenge. To stimulate interest in this area, phosphorus adsorption and association in iron oxides/hydroxyoxides, and current efforts at its removal, have been reviewed. The important properties of the most relevant crystalline phosphate phases in iron ores are highlighted, and insights provided on plausible routes for the development of sustainable phosphorus recovery solutions from high-phosphorus iron ores. Leveraging literature information from geochemical investigations into phosphorus distribution, speciation, and mobility in various natural systems, key knowledge gaps that are vital for the development of sustainable phosphorus removal/recovery strategies and important factors (white spaces) not yet adequately taken into consideration in current phosphorus removal/recovery solutions are highlighted, and the need for their integration in the development of future phosphorus removal/recovery solutions, as well as their plausible impacts on phosphorus removal/recovery, are put into perspective.
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Comesaña R, Lusquiños F, Del Val J, Quintero F, Riveiro A, Boutinguiza M, Jones JR, Hill RG, Pou J. Toward smart implant synthesis: bonding bioceramics of different resorbability to match bone growth rates. Sci Rep 2015; 5:10677. [PMID: 26032983 PMCID: PMC4451530 DOI: 10.1038/srep10677] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 04/13/2015] [Indexed: 12/20/2022] Open
Abstract
Craniofacial reconstructive surgery requires a bioactive bone implant capable to provide a gradual resorbability and to adjust to the kinetics of new bone formation during healing. Biomaterials made of calcium phosphate or bioactive glasses are currently available, mainly as bone defect fillers, but it is still required a versatile processing technique to fabricate composition-gradient bioceramics for application as controlled resorption implants. Here it is reported the application of rapid prototyping based on laser cladding to produce three-dimensional bioceramic implants comprising of a calcium phosphate inner core, with moderate in vitro degradation at physiological pH, surrounded by a bioactive glass outer layer of higher degradability. Each component of the implant is validated in terms of chemical and physical properties, and absence of toxicity. Pre-osteoblastic cell adhesion and proliferation assays reveal the adherence and growth of new bone cells on the material. This technique affords implants with gradual-resorbability for restoration of low-load-bearing bone.
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Affiliation(s)
- Rafael Comesaña
- Applied Physics Dpt., University of Vigo, E.I.I., Lagoas-Marcosende E-36310, Vigo, Spain
| | - Fernando Lusquiños
- Applied Physics Dpt., University of Vigo, E.I.I., Lagoas-Marcosende E-36310, Vigo, Spain
| | - Jesús Del Val
- Applied Physics Dpt., University of Vigo, E.I.I., Lagoas-Marcosende E-36310, Vigo, Spain
| | - Félix Quintero
- Applied Physics Dpt., University of Vigo, E.I.I., Lagoas-Marcosende E-36310, Vigo, Spain
| | - Antonio Riveiro
- Applied Physics Dpt., University of Vigo, E.I.I., Lagoas-Marcosende E-36310, Vigo, Spain
| | - Mohamed Boutinguiza
- Applied Physics Dpt., University of Vigo, E.I.I., Lagoas-Marcosende E-36310, Vigo, Spain
| | - Julian R Jones
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Robert G Hill
- Unit of Dental and Physical Sciences, Barts and the London, Mile End Road, London E1 4NS, United Kingdom
| | - Juan Pou
- Applied Physics Dpt., University of Vigo, E.I.I., Lagoas-Marcosende E-36310, Vigo, Spain
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Trabecular coating on curved alumina substrates using a novel bioactive and strong glass-ceramic. BIOMEDICAL GLASSES 2015. [DOI: 10.1515/bglass-2015-0003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn the last few years, optimal fixation of orthopaedic implants evolved to preserve host bone and enhance tissue integration by surface modifications, including the use of coatings with bioactive ceramics. In this work, we fabricated a novel bone-like porous bioactive glass-ceramic coating on curved alumina substrates; good joining between the two components was possible due to the interposition of a glass-derived dense interlayer. The mechanical properties of the porous glass-ceramic, which mimics the 3-D pore architecture of cancellous bone, are adequate for load-bearing applications (compressive strength of 19 MPa and fracture energy around 6.5×10
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Tanaka M, Takemoto M, Fujibayashi S, Kawai T, Tsukanaka M, Takami K, Motojima S, Inoue H, Nakamura T, Matsuda S. Development of a novel calcium phosphate cement composed mainly of calcium sodium phosphate with high osteoconductivity. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1505-1517. [PMID: 24671331 DOI: 10.1007/s10856-014-5181-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 02/14/2014] [Indexed: 06/03/2023]
Abstract
Two novel calcium phosphate cements (CPC) have been developed using calcium sodium phosphate (CSP) as the main ingredient. The first of these cements, labeled CAC, contained CSP, α-tricalcium phosphate (TCP), and anhydrous citric acid, whereas the second, labeled CABC, contained CSP, α-TCP, β-TCP, and anhydrous citric acid. Biopex(®)-R (PENTAX, Tokyo, Japan), which is a commercially available CPC (Com-CPC), and OSferion(®) (Olympus Terumo Biomaterials Corp., Tokyo, Japan), which is a commercially available porous β-TCP, were used as reference controls for analysis. In vitro analysis showed that CABC set in 5.7 ± 0.3 min at 22 °C and had a compressive strength of 86.0 ± 9.7 MPa after 5 days. Furthermore, this material had a compressive strength of 26.7 ± 3.7 MPa after 2 h in physiologic saline. CAC showed a statistically significantly lower compressive strength in the presence of physiologic saline and statistically significantly longer setting times than those of CABC. CABC and CAC exhibited apatite-forming abilities in simulated body fluid that were faster than that of Com-CPC. Samples of the materials were implanted into the femoral condyles of rabbits for in vivo analysis, and subsequent histological examinations revealed that CABC exhibited superior osteoconductivity and equivalent bioresorbability compared with Com-CPC, as well as superior osteoconductivity and bioresorbability compared with CAC. CABC could therefore be used as an alternative bone substitute material.
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Affiliation(s)
- Masashi Tanaka
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shougoin, Sakyou-ku, Kyoto, 606-8507, Japan,
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Cho JS, Kim HS, Um SH, Rhee SH. Preparation of a novel anorganic bovine bone xenograft with enhanced bioactivity and osteoconductivity. J Biomed Mater Res B Appl Biomater 2013; 101:855-69. [PMID: 23359483 DOI: 10.1002/jbm.b.32890] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 12/08/2012] [Accepted: 12/11/2012] [Indexed: 11/07/2022]
Abstract
A novel anorganic bovine bone xenograft with enhanced bioactivity and osteoconductivity was prepared by an ion substitution method using sodium hypochlorite. Bovine bone granules were defatted, washed, and then soaked in sodium hypochlorite solution at room temperature. Subsequently, the granules were dried and then heat-treated at 1000°C with sodium hypochlorite. As a control, bovine bone granules were prepared with the same conditions but without sodium hypochlorite treatment. Phase, functional group, and elemental analyses by XRD, FTIR, and EPMA showed that the granules heat-treated without and with sodium hypochlorite were pure hydroxyapatite and sodium-chlorine-bearing hydroxyapatite, respectively. After soaking in simulated body fluid (SBF) for 1 week, low crystalline hydroxyl carbonate apatite fully covered the surface of sodium-chlorine-bearing hydroxyapatite, whereas it formed little on the hydroxyapatite surface. After soaking in SBF and deionized water, ICP-AES and IC analyses showed that the dissolutions of calcium, sodium, chlorine, and hydroxyl ions from sodium-chlorine-bearing hydroxyapatite notably increased compared with those from hydroxyapatite. This resultantly increased the ionic activity product of apatite in SBF and induced new formation of low crystalline hydroxyl carbonate apatite. The cytotoxicity test by BCA assay showed that there were no statistically significant differences between hydroxyapatite and sodium-chlorine-bearing hydroxyapatite. In addition, sodium-chlorine-bearing hydroxyapatite showed better osteoconductivity in the calvarial defects of New Zealand white rabbits within 4 weeks compared with that of hydroxyapatite. The results suggest that this novel anorganic bovine bone xenograft possesses encouraging potential for use as a bone grafting material due to better bioactivity and osteoconductivity than hydroxyapatite.
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Affiliation(s)
- Jung Sang Cho
- Interdisciplinary Program of Bioengineering, College of Engineering, Seoul National University, Seoul 152-742, Korea
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Tas AC. X-ray-amorphous calcium phosphate (ACP) synthesis in a simple biomineralization medium. J Mater Chem B 2013; 1:4511-4520. [DOI: 10.1039/c3tb20854k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Schickle K, Zurlinden K, Bergmann C, Lindner M, Kirsten A, Laub M, Telle R, Jennissen H, Fischer H. Synthesis of novel tricalcium phosphate-bioactive glass composite and functionalization with rhBMP-2. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:763-771. [PMID: 21308404 DOI: 10.1007/s10856-011-4252-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 01/27/2011] [Indexed: 05/30/2023]
Abstract
A functionalization is required for calcium phosphate-based bone substitute materials to achieve an entire bone remodeling. In this study it was hypothesized that a tailored composite of tricalcium phosphate and a bioactive glass can be loaded sufficiently with rhBMP-2 for functionalization. A composite of 40 wt% tricalcium phosphate and 60 wt% bioactive glass resulted in two crystalline phases, wollastonite and rhenanite after sintering. SEM analysis of the composite's surface revealed a spongious bone-like morphology after treatment with different acids. RhBMP-2 was immobilized non-covalently by treating with chrome sulfuric acid (CSA) and 3-aminopropyltriethoxysilane (APS) and covalently by treating with CSA/APS, and additionally with 1,1'-carbonyldiimidazole. It was proved that samples containing non-covalently immobilized rhBMP-2 on the surface exhibit significant biological activity in contrast to the samples with covalently bound protein on the surface. We conclude that a tailored composite of tricalcium phosphate and bioactive glass can be loaded sufficiently with BMP-2.
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Affiliation(s)
- Karolina Schickle
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074 Aachen, Germany
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Lewis G. Alternative acrylic bone cement formulations for cemented arthroplasties: present status, key issues, and future prospects. J Biomed Mater Res B Appl Biomater 2008; 84:301-19. [PMID: 17588247 DOI: 10.1002/jbm.b.30873] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
All the commercially available plain acrylic bone cement brands that are used in cemented arthroplasties are based on poly (methyl methacrylate) and, with a few exceptions, have the same constituents. It is well known that these brands are beset with many drawbacks, such as high maximum exotherm temperature, lack of bioactivity, and volumetric shrinkage upon curing. Furthermore, concerns have been raised about a number of the constituents, such as toxicity of the activator (N,N,dimethyl-p-toluidine) and possible involvement of the radiopacifier (BaSO(4) or ZrO(2) particles) in third-body wear. Thus, over the years, many research efforts have been expended to address these drawbacks, culminating in a large number of alternative formulations, which may be grouped into 16 categories. Although there are a number of reviews of the large literature that now exists on these formulations, each covers only some of the categories and none contains a detailed discussion of the germane issues. The objective of the present work, therefore, was to present a comprehensive and critical review of the whole field. In addition to succinct descriptions of the cements in each category, there are explicative summaries of literature reports, a detailed discussion of several key issues surrounding the potential for use of these cements in cemented arthroplasties, and a presentation of numerous ideas for future studies.
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Affiliation(s)
- Gladius Lewis
- Department of Mechanical Engineering, The University of Memphis, 316 Engineering Science Building, Memphis, Tennessee 38152, USA.
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