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Herrero-Climent M, Falcao A, Tondela J, Brizuela A, Rios-Carrasco B, Gil J. Relevant Aspects of the Dental Implant Design on the Insertion Torque, Resonance Frequency Analysis (RFA) and Micromobility: An In Vitro Study. J Clin Med 2023; 12:jcm12030855. [PMID: 36769501 PMCID: PMC9917810 DOI: 10.3390/jcm12030855] [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: 12/09/2022] [Revised: 12/30/2022] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
The major problems for the osseointegration of dental implants are the loosening of the screw that fixes the dental implant to the abutment and the micromovements that are generated when mechanical loads are applied. In this work, torque differences in the tightening and loosening of the connection screws after 1 cycle, 10 cycles and 1000 cycles for 4 dental implants with 2 external and 2 internal connections were analyzed. The loosening of 240 implants (60 for each system) was determined using high-precision torsimeters and an electromechanical testing machine. A total of 60 dental implants for each of the 4 systems were inserted into fresh bovine bone to determine the micromovements. The implant stability values (ISQ) were determined by RFA. The mechanical loads were performed at 30° from 20 N to 200 N. By means of the Q-star technique, the micromovements were determined. It was observed that, for a few cycles, the loosening of the screw did not exceed a loss of tightening of 10% for both connections. However, for 1000 cycles, the loss for the external connection was around 20% and for the internal connection it was 13%. The micromovements showed a lineal increase with the applied load for the implant systems studied. An external connection presented greater micromotions for each level of applied load and lower ISQ values than internal ones. An excellent lineal correlation between the ISQ and micromobility was observed. These results may be very useful for clinicians in the selection of the type of dental implant, depending on the masticatory load of the patient as well as the consequences of the insertion torque of the dental implant and its revisions.
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Affiliation(s)
| | - Artur Falcao
- Porto Dental Institute, Av. de Montevideu 810, 4150-518 Porto, Portugal
| | - Joao Tondela
- Centre for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Rua Larga 2, 3004-531 Coimbra, Portugal
| | - Aritza Brizuela
- Facultad de Odontología, Universidad Europea Miguel de Cervantes, C/del Padre Julio Chevalier 2, 47012 Valladolid, Spain
| | - Blanca Rios-Carrasco
- Department of Periodontology, Faculty of Dentsitry, University of Seville, 41009 Sevilla, Spain
| | - Javier Gil
- Bioengineering Institute of Technology, Facultad de Medicina y Ciencias de la Salud, International University of Catalonia, Sant Cugat del Vallés, 08195 Barcelona, Spain
- Correspondence:
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Gritsch L, Bossard C, Jallot E, Jones JR, Lao J. Bioactive glass-based organic/inorganic hybrids: an analysis of the current trends in polymer design and selection. J Mater Chem B 2023; 11:519-545. [PMID: 36541433 DOI: 10.1039/d2tb02089k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bioactive glass-based organic/inorganic hybrids are a family of materials holding great promise in the biomedical field. Developed from bioactive glasses following recent advances in sol-gel and polymer chemistry, they can overcome many limitations of traditional composites typically used in bone repair and orthopedics. Thanks to their unique molecular structure, hybrids are often characterized by synergistic properties that go beyond a mere combination of their two components; it is possible to synthesize materials with a wide variety of mechanical and biological properties. The polymeric component, in particular, can be tailored to prepare tough, load-bearing materials, or rubber-like elastomers. It can also be a key factor in the determination of a wide range of interesting biological properties. In addition, polymers can also be used within hybrids as carriers for therapeutic ions (although this is normally the role of silica). This review offers a brief look into the history of hybrids, from the discovery of bioactive glasses to the latest developments, with a particular emphasis on polymer design and chemistry. First the benefits and limitations of hybrids will be discussed and compared with those of alternative approaches (for instance, nanocomposites). Then, key advances in the field will be presented focusing on the polymeric component: its chemistry, its physicochemical and biological advantages, its drawbacks, and selected applications. Comprehensive tables summarizing all the polymers used to date to fabricate sol-gel hybrids for biomedical applications are also provided, to offer a handbook of all the available candidates for hybrid synthesis. In addition to the current trends, open challenges and possible avenues of future development are proposed.
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Affiliation(s)
- Lukas Gritsch
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France. .,Technogym S.p.A., via Calcinaro 2861, 47521 Cesena (FC), Italy
| | - Cédric Bossard
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France.
| | - Edouard Jallot
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France.
| | - Julian R Jones
- Department of Materials, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Jonathan Lao
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France.
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Coelho SAR, Almeida JC, Unalan I, Detsch R, Miranda Salvado IM, Boccaccini AR, Fernandes MHV. Cellular Response to Sol-Gel Hybrid Materials Releasing Boron and Calcium Ions. ACS Biomater Sci Eng 2021; 7:491-506. [PMID: 33497178 DOI: 10.1021/acsbiomaterials.0c01546] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Poly(dimethylsiloxane) (PDMS)-SiO2-CaO-based hybrid materials prepared by sol-gel have proved to be very promising materials for tissue engineering applications and drug-delivery systems. These hybrids are biocompatible and present osteogenic and bioactive properties supporting osteoblast attachment and bone growth. The incorporation of therapeutic elements in these materials, such as boron (B) and calcium (Ca), was considered in this study as an approach to develop biomaterials capable of stimulating bone regeneration. The main purpose of this work was thus to produce, by sol-gel, bioactive and biocompatible hybrid materials of the PDMS-SiO2-B2O3-CaO system, capable of a controlled Ca and B release. Different compositions with different boron amounts were prepared using the same precursors resulting in different monolithic materials, with distinct structures and microstructures. Structural features were assessed by Fourier transform infrared (FT-IR) spectrometry and solid-state nuclear magnetic resonance (NMR) techniques, which confirmed the presence of hybrid bonds (Si-O-Si) between organic (PDMS) and inorganic phase (tetraethyl orthosilicate (TEOS)), as well as borosiloxane bonds (B-O-Si). From the 11B NMR results, it was found that Ca changes the boron coordination, from trigonal (BO3) to tetrahedral (BO4). Scanning electron microscopy (SEM) micrographs and N2 isotherms showed that the incorporation of boron modifies the material's microstructure by increasing the macroporosity and decreasing the specific surface area (SSA). In vitro tests in simulated body fluid (SBF) showed the precipitation of a calcium phosphate layer on the material surface and the controlled release of therapeutic ions. The cytocompatibility of the prepared hybrids was studied with bone marrow stromal cells (ST-2 cell line) by analyzing the cell viability and cell density. The results demonstrated that increasing the dilution rate of extraction medium from the hybrids leads to improved cell behavior. The relationship between the in vitro response and the structural and microstructural features of the materials was explored. It was shown that the release of calcium and boron ions, determined by the hybrid structure was crucial for the observed cells behavior. Although not completely understood, the encouraging results obtained constitute an incentive for further studies on this topic.
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Affiliation(s)
- Soraia Alexandra Ramos Coelho
- Department of Materials and Ceramic Engineering, CICECO-Aveiro Institute of Materials (CICECO/UA), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Jose Carlos Almeida
- Department of Materials and Ceramic Engineering, CICECO-Aveiro Institute of Materials (CICECO/UA), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Irem Unalan
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander-University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
| | - Rainer Detsch
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander-University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
| | - Isabel Margarida Miranda Salvado
- Department of Materials and Ceramic Engineering, CICECO-Aveiro Institute of Materials (CICECO/UA), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander-University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
| | - Maria Helena Vaz Fernandes
- Department of Materials and Ceramic Engineering, CICECO-Aveiro Institute of Materials (CICECO/UA), University of Aveiro, 3810-193 Aveiro, Portugal.,The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, Barco, 4805-017 Guimarães, Portugal
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Fernández-Fairén M, Torres-Perez A, Perez R, Punset M, Molmeneu M, Ortiz-Hernández M, Manero JM, Gil J. Early Short-Term Postoperative Mechanical Failures of Current Ceramic-on-Ceramic Bearing Total Hip Arthroplasties. MATERIALS 2020; 13:ma13235318. [PMID: 33255355 PMCID: PMC7727787 DOI: 10.3390/ma13235318] [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: 10/26/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/01/2022]
Abstract
Although ceramic-on-ceramic (CoC) bearings have been shown to produce the smallest amount of wear volume in vitro as well as in vivo studies when used for total hip arthroplasties (THA), concerns about the failure of these bearing surfaces persist due to early failures observed after short postoperative time. In this study, an exhaustive analysis of the early failure occurred on the new generation of ceramic bearings, consisting of a composite alumina matrix-based material reinforced with yttria-stabilized tetragonal zirconia (Y-TZP) particles, chromium dioxide, and strontium crystals, was performed. For this study, 118 CoC bearings from 117 patients were revised. This article describes a group of mechanical failure CoC-bearing BIOLOX THA hip prosthesis patients without trauma history. The retrieved samples were observed under scanning electron microscopy (SEM), composition was analyzed with energy dispersive X-ray spectroscopy (EDX), and damaged surfaces were analyzed by grazing-incidence X-ray diffraction (GI-XRD) and white light interferometry. In the short term, CoC articulations provided similar mechanical behavior and functional outcome to those in XLPE cases. However, 5% more early mechanical failures cases were observed for the ceramic components. Although the fracture rate of third generation CoC couples is low, the present study shows the need to further improve the third generation of CoC-bearing couples for THA. Despite the improved wear compared to other materials, stress concentrators are sources of initial crack propagation, such as those found in the bore-trunnion areas. Moreover, in view of the evidence observed in this study, the chipping observed was due to the presence of monoclinic phase of the Y-TZP instead of tetragonal, which presents better mechanical properties. The results showed that total safety after receiving a THA is still a goal to be pursued.
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Affiliation(s)
- Mariano Fernández-Fairén
- Bioengineering Institute of Technology, Facultat de Medicina y Ciencias de la Salud, Universitat Internacional de Catalunya, 080195 Barcelona, Spain; (M.F.-F.); (R.P.)
| | - Ana Torres-Perez
- Hospital Universitario Santa Lucía, Calle Mezquita, s/n, 30202 Cartagena, Spain;
| | - Roman Perez
- Bioengineering Institute of Technology, Facultat de Medicina y Ciencias de la Salud, Universitat Internacional de Catalunya, 080195 Barcelona, Spain; (M.F.-F.); (R.P.)
| | - Miquel Punset
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), Carrer de Jordi Girona 1, 08034 Barcelona, Spain; (M.P.); (M.M.); (M.O.-H.); (J.M.M.)
- Barcelona Research Centre in Multiscale Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10–14, 08019 Barcelona, Spain
- UPC Innovation and Technology Center (CIT-UPC), Technical University of Catalonia (UPC), C. Jordi Girona 3–1, 08034 Barcelona, Spain
| | - Meritxell Molmeneu
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), Carrer de Jordi Girona 1, 08034 Barcelona, Spain; (M.P.); (M.M.); (M.O.-H.); (J.M.M.)
- Barcelona Research Centre in Multiscale Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10–14, 08019 Barcelona, Spain
| | - Monica Ortiz-Hernández
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), Carrer de Jordi Girona 1, 08034 Barcelona, Spain; (M.P.); (M.M.); (M.O.-H.); (J.M.M.)
- Barcelona Research Centre in Multiscale Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10–14, 08019 Barcelona, Spain
| | - José María Manero
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC), Carrer de Jordi Girona 1, 08034 Barcelona, Spain; (M.P.); (M.M.); (M.O.-H.); (J.M.M.)
- Barcelona Research Centre in Multiscale Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10–14, 08019 Barcelona, Spain
| | - Javier Gil
- Bioengineering Institute of Technology, Facultat de Medicina y Ciencias de la Salud, Universitat Internacional de Catalunya, 080195 Barcelona, Spain; (M.F.-F.); (R.P.)
- Correspondence:
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Biofunctionalization with a TGFβ-1 Inhibitor Peptide in the Osseointegration of Synthetic Bone Grafts: An In Vivo Study in Beagle Dogs. MATERIALS 2019; 12:ma12193168. [PMID: 31569702 PMCID: PMC6803977 DOI: 10.3390/ma12193168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/16/2019] [Accepted: 09/24/2019] [Indexed: 12/19/2022]
Abstract
Objectives: The aim of this research was to determine the osseointegration of two presentations of biphasic calcium phosphate (BCP) biomaterial—one untreated and another submitted to biofunctionalization with a TGF-β1 inhibitor peptide, P144, on dental alveolus. Materials and Methods: A synthetic bone graft was used, namely, (i) Maxresorb® (Botiss Klockner) (n = 12), and (ii) Maxresorb® (Botiss Klockner) biofunctionalized with P144 peptide (n = 12). Both bone grafts were implanted in the two hemimandibles of six beagle dogs in the same surgical time, immediately after tooth extraction. Two dogs were sacrificed 2, 4, and 8 weeks post implant insertion, respectively. The samples were submitted to histomorphometrical and histological analyses. For each sample, we quantified the new bone growth and the new bone formed around the biomaterial’s granules. After optical microscopic histological evaluation, selected samples were studied using backscattered scanning electron microscopy (BS-SEM). Results: The biofunctionalization of the biomaterial’s granules maintains a stable membranous bone formation throughout the experiment timeline, benefitting from the constant presence of vascular structures in the alveolar space, in a more active manner that in the control samples. Better results in the experimental groups were proven both by quantitative and qualitative analysis. Conclusions: Synthetic bone graft biofunctionalization results in slightly better quantitative parameters of the implant’s osseointegration. The qualitative histological and ultramicroscopic analysis shows that biofunctionalization may shorten the healing period of dental biomaterials.
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Aslankoohi N, Mondal D, Rizkalla AS, Mequanint K. Bone Repair and Regenerative Biomaterials: Towards Recapitulating the Microenvironment. Polymers (Basel) 2019; 11:E1437. [PMID: 31480693 PMCID: PMC6780693 DOI: 10.3390/polym11091437] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/24/2019] [Accepted: 08/25/2019] [Indexed: 02/07/2023] Open
Abstract
Biomaterials and tissue engineering scaffolds play a central role to repair bone defects. Although ceramic derivatives have been historically used to repair bone, hybrid materials have emerged as viable alternatives. The rationale for hybrid bone biomaterials is to recapitulate the native bone composition to which these materials are intended to replace. In addition to the mechanical and dimensional stability, bone repair scaffolds are needed to provide suitable microenvironments for cells. Therefore, scaffolds serve more than a mere structural template suggesting a need for better and interactive biomaterials. In this review article, we aim to provide a summary of the current materials used in bone tissue engineering. Due to the ever-increasing scientific publications on this topic, this review cannot be exhaustive; however, we attempted to provide readers with the latest advance without being redundant. Furthermore, every attempt is made to ensure that seminal works and significant research findings are included, with minimal bias. After a concise review of crystalline calcium phosphates and non-crystalline bioactive glasses, the remaining sections of the manuscript are focused on organic-inorganic hybrid materials.
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Affiliation(s)
- Neda Aslankoohi
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Dibakar Mondal
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Amin S Rizkalla
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
- Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Kibret Mequanint
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
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Romero-Gavilán F, Araújo-Gomes N, Cerqueira A, García-Arnáez I, Martínez-Ramos C, Azkargorta M, Iloro I, Elortza F, Gurruchaga M, Suay J, Goñi I. Proteomic analysis of calcium-enriched sol-gel biomaterials. J Biol Inorg Chem 2019; 24:563-574. [PMID: 31030324 DOI: 10.1007/s00775-019-01662-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/15/2019] [Indexed: 01/05/2023]
Abstract
Calcium is an element widely used in the development of biomaterials for bone tissue engineering as it plays important roles in bone metabolism and blood coagulation. The Ca ions can condition the microenvironment at the tissue-material interface, affecting the protein deposition process and cell responses. The aim of this study was to analyze the changes in the patterns of protein adsorption on the silica hybrid biomaterials supplemented with different amounts of CaCl2, which can function as release vehicles. This characterization was carried out by incubating the Ca-biomaterials with human serum. LC-MS/MS analysis was used to characterize the adsorbed protein layers and compile a list of proteins whose affinity for the surfaces might depend on the CaCl2 content. The attachment of pro- and anti-clotting proteins, such as THRB, ANT3, and PROC, increased significantly on the Ca-materials. Similarly, VTNC and APOE, proteins directly involved on osteogenic processes, attached preferentially to these surfaces. To assess correlations with the proteomic data, these formulations were tested in vitro regarding their osteogenic and inflammatory potential, employing MC3T3-E1 and RAW 264.7 cell lines, respectively. The results confirmed a Ca dose-dependent osteogenic and inflammatory behavior of the materials employed, in accordance with the protein attachment patterns.
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Affiliation(s)
- F Romero-Gavilán
- Departamento de Ingeniería de Sistemas Industriales y Diseño, Universitat Jaume I, Av. Vicent-Sos Baynat s/n, 12071, Castellón de la Plana, Spain
| | - Nuno Araújo-Gomes
- Departamento de Ingeniería de Sistemas Industriales y Diseño, Universitat Jaume I, Av. Vicent-Sos Baynat s/n, 12071, Castellón de la Plana, Spain.
- Department of Medicine, Universitat Jaume I, Av. Vicent-Sos Baynat s/n, 12071, Castellón de la Plana, Spain.
| | - A Cerqueira
- Department of Medicine, Universitat Jaume I, Av. Vicent-Sos Baynat s/n, 12071, Castellón de la Plana, Spain
| | - I García-Arnáez
- Facultad de Ciencias Químicas, Universidad del País Vasco., P. M. de Lardizábal, 3, 20018, San Sebastián, Spain
| | - C Martínez-Ramos
- Department of Medicine, Universitat Jaume I, Av. Vicent-Sos Baynat s/n, 12071, Castellón de la Plana, Spain
| | - M Azkargorta
- Proteomics Platform, CIC bioGUNE, CIBERehd, ProteoRed-ISCIII, Bizkaia Science and Technology Park, 48160, Derio, Spain
| | - I Iloro
- Proteomics Platform, CIC bioGUNE, CIBERehd, ProteoRed-ISCIII, Bizkaia Science and Technology Park, 48160, Derio, Spain
| | - F Elortza
- Proteomics Platform, CIC bioGUNE, CIBERehd, ProteoRed-ISCIII, Bizkaia Science and Technology Park, 48160, Derio, Spain
| | - M Gurruchaga
- Facultad de Ciencias Químicas, Universidad del País Vasco., P. M. de Lardizábal, 3, 20018, San Sebastián, Spain
| | - J Suay
- Departamento de Ingeniería de Sistemas Industriales y Diseño, Universitat Jaume I, Av. Vicent-Sos Baynat s/n, 12071, Castellón de la Plana, Spain
| | - I Goñi
- Facultad de Ciencias Químicas, Universidad del País Vasco., P. M. de Lardizábal, 3, 20018, San Sebastián, Spain
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Atomic force microscopy technique for the surface characterization of sol–gel derived multi-component silica nanocomposites. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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PDMS-SiO2-TiO2-CaO hybrid materials – Cytocompatibility and nanoscale surface features. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 64:74-86. [DOI: 10.1016/j.msec.2016.03.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/12/2016] [Accepted: 03/21/2016] [Indexed: 11/17/2022]
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Almeida JC, Wacha A, Gomes PS, Alves LC, Fernandes MHV, Salvado IMM, Fernandes MHR. A biocompatible hybrid material with simultaneous calcium and strontium release capability for bone tissue repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:429-38. [DOI: 10.1016/j.msec.2016.01.083] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/06/2016] [Accepted: 01/27/2016] [Indexed: 01/18/2023]
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Czarnobaj K. The Role of Polydimethylsiloxane in the Molecular Structure of Silica Xerogels Intended for Drug Carriers. Sci Pharm 2016; 83:519-34. [PMID: 26839836 PMCID: PMC4727759 DOI: 10.3797/scipharm.1409-08] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 07/01/2015] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to prepare and examine polymer/oxide xerogels with metronidazole (MT) as delivery systems for the local application of a drug to a bone. The nanoporous SiO2-CaO and PDMS-modified SiO2-CaO xerogel materials with different amounts of the polymer, polydimethylsiloxane (PDMS), were prepared by the sol-gel method. Characterization assays comprised the analysis of the composite materials by using Fourier transform infrared spectroscopy (FTIR), determining the specific surface area of solids (BET), using X-ray powder diffraction (XRD) and scanning electron microscope (SEM) techniques, and further monitoring in the ultraviolet and visible light regions (UV-Vis) of the in vitro release of the drug (metronidazole) over time. According to these results, the bioactive character and chemical stability of PDMS-modified silica xerogels have been proven. The release of MT from xerogels was strongly correlated with the composition of the matrix. In comparison with the pure oxide matrix, PDMS-modified matrices accelerated the release of the drug through its bigger pores, and additionally, on account of weaker interactions with the drug. The obtained results for the xerogel composites suggest that the metronidazole-loaded xerogels could be promising candidates for formulations in local delivery systems particularly to bone.
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Affiliation(s)
- Katarzyna Czarnobaj
- Department of Physical Chemistry, Medical University of Gdańsk, al. gen. J. Hallera 107, 80-416 Gdańsk, Poland
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Almeida JC, Wacha A, Bóta A, Almásy L, Vaz Fernandes MH, Margaça FM, Miranda Salvado IM. PDMS-SiO2 hybrid materials – A new insight into the role of Ti and Zr as additives. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.06.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Li A, Shen H, Ren H, Wang C, Wu D, Martin RA, Qiu D. Bioactive organic/inorganic hybrids with improved mechanical performance. J Mater Chem B 2015; 3:1379-1390. [DOI: 10.1039/c4tb01776e] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
New sol–gel functionalized poly-ethylene glycol (PEGM)/SiO2–CaO hybrids were prepared with interpenetrating networks of silica and PEGM through the formation of Si–O–Si bonds.
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Affiliation(s)
- Ailing Li
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hong Shen
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Huihui Ren
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chen Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Richard A. Martin
- School of Engineering & Applied Science and Aston Research Centre for Healthy Ageing
- University of Aston
- Birmingham
- UK
| | - Dong Qiu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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Chemtob A, De Paz-Simon H, Croutxé-Barghorn C, Rigolet S. UV-activated silicone oligomer cross-linking through photoacid and photobase organocatalysts. J Appl Polym Sci 2013. [DOI: 10.1002/app.39875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Abraham Chemtob
- Laboratory of Macromolecular Photochemistry and Engineering; University of Haute-Alsace; ENSCMu, 3 rue Alfred Werner 68093 Mulhouse Cedex France
| | - Héloïse De Paz-Simon
- Laboratory of Macromolecular Photochemistry and Engineering; University of Haute-Alsace; ENSCMu, 3 rue Alfred Werner 68093 Mulhouse Cedex France
| | - Céline Croutxé-Barghorn
- Laboratory of Macromolecular Photochemistry and Engineering; University of Haute-Alsace; ENSCMu, 3 rue Alfred Werner 68093 Mulhouse Cedex France
| | - Séverinne Rigolet
- Institute of Mulhouse Material Science, Equipe Matériaux à Porosité Contrôlée, UMR-CNRS 7361; University of Haute-Alsace; 3 rue Alfred Werner 68093 Mulhouse Cedex France
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Campion CR, Ball SL, Clarke DL, Hing KA. Microstructure and chemistry affects apatite nucleation on calcium phosphate bone graft substitutes. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:597-610. [PMID: 23242766 DOI: 10.1007/s10856-012-4833-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 11/30/2012] [Indexed: 06/01/2023]
Abstract
The bioactivity of calcium phosphate bone grafts of varying chemistry and strut-porosity was compared by determining the rate of formation of hydroxycarbonate apatite crystals on the material surface after being soaked in simulated body fluid for up to 30 days. Three groups of silicate-substituted hydroxyapatite material were tested, with each group comprising a different quantity of strut-porosity (23, 32, and 46 % volume). A commercially available porous β-tricalcium phosphate bone graft substitute was tested for comparison. Results indicate that strut-porosity of a material affects the potential for formation of a precursor to bone-like apatite and further confirms previous findings that β-tricalcium phosphate is less bioactive than hydroxyapatite.
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Affiliation(s)
- Charlie R Campion
- Department of Materials, School of Engineering and Materials, Queen Mary, University of London, London, UK
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Allo BA, Costa DO, Dixon SJ, Mequanint K, Rizkalla AS. Bioactive and biodegradable nanocomposites and hybrid biomaterials for bone regeneration. J Funct Biomater 2012; 3:432-63. [PMID: 24955542 PMCID: PMC4047942 DOI: 10.3390/jfb3020432] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 06/09/2012] [Accepted: 06/14/2012] [Indexed: 02/04/2023] Open
Abstract
Strategies for bone tissue engineering and regeneration rely on bioactive scaffolds to mimic the natural extracellular matrix and act as templates onto which cells attach, multiply, migrate and function. Of particular interest are nanocomposites and organic-inorganic (O/I) hybrid biomaterials based on selective combinations of biodegradable polymers and bioactive inorganic materials. In this paper, we review the current state of bioactive and biodegradable nanocomposite and O/I hybrid biomaterials and their applications in bone regeneration. We focus specifically on nanocomposites based on nano-sized hydroxyapatite (HA) and bioactive glass (BG) fillers in combination with biodegradable polyesters and their hybrid counterparts. Topics include 3D scaffold design, materials that are widely used in bone regeneration, and recent trends in next generation biomaterials. We conclude with a perspective on the future application of nanocomposites and O/I hybrid biomaterials for regeneration of bone.
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Affiliation(s)
- Bedilu A Allo
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
| | - Daniel O Costa
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
| | - S Jeffrey Dixon
- Department of Physiology and Pharmacology, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, Ontario N6A 5C1, Canada.
| | - Kibret Mequanint
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
| | - Amin S Rizkalla
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
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Sol-gel silica-based biomaterials and bone tissue regeneration. Acta Biomater 2010; 6:2874-88. [PMID: 20152946 DOI: 10.1016/j.actbio.2010.02.012] [Citation(s) in RCA: 285] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 02/02/2010] [Accepted: 02/04/2010] [Indexed: 11/21/2022]
Abstract
The impact of bone diseases and trauma in developed and developing countries has increased significantly in the last decades. Bioactive glasses, especially silica-based materials, are called to play a fundamental role in this field due to their osteoconductive, osteoproductive and osteoinductive properties. In the last years, sol-gel processes and supramolecular chemistry of surfactants have been incorporated to the bioceramics field, allowing the porosity of bioglasses to be controlled at the nanometric scale. This advance has promoted a new generation of sol-gel bioactive glasses with applications such as drug delivery systems, as well as regenerative grafts with improved bioactive behaviour. Besides, the combination of silica-based glasses with organic components led to new organic-inorganic hybrid materials with improved mechanical properties. Finally, an effort has been made to organize at the macroscopic level the sol-gel glass preparation. This effort has resulted in new three-dimensional macroporous scaffolds, suitable to be used in tissue engineering techniques or as porous pieces to be implanted in situ. This review collects the most important advances in the field of silica glasses occurring in the last decade, which are called to play a lead role in the future of bone regenerative therapies.
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Manzano M, Salinas AJ, Gil FJ, Vallet-Regí M. Mechanical properties of organically modified silicates for bone regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:1795-1801. [PMID: 19404723 DOI: 10.1007/s10856-009-3753-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Accepted: 04/15/2009] [Indexed: 05/27/2023]
Abstract
In this paper, different organic-inorganic hybrid materials based in the CaO-SiO(2)-poly(dimethyl siloxane) PDMS system have been characterised by means of nanoindentation and their static mechanical properties (Young's modulus, and hardness) have been investigated. These mechanical properties have been discussed in relation to the chemical composition and structure of the different hybrid materials. Besides, the mechanical behaviour of hybrid materials is visco-elastic and it therefore presents phenomena of creep that will be influenced by the temperature of the mechanical test; undoubtedly, a temperature of 37 degrees C accelerates the processes of creep.
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Affiliation(s)
- Miguel Manzano
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, 28040, Madrid, Spain
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Abstract
Sol–gel synthesis is used for the fabrication of new materials with technological applications including ceramics for implants manufacturing, usually termed bioceramics. Many bioactive and resorbable bioceramics, that is, calcium phosphates, glasses and glass–ceramics, have been improved by using the sol–gel synthesis. In addition, the soft thermal conditions of sol–gel methods made possible to synthesize more reactive materials than those synthesized by traditional methods. Moreover, new families of bioactive materials such as organic–inorganic hybrids and inorganic compounds with ordered mesostructure can be produced. In hybrid materials, the inorganic component ensures the bioactive response whereas the organic polymeric component allows modulating other properties of the resulting biomaterial such as mechanical properties, degradation, etc. On the other hand, the sol–gel processes also allow the synthesis of silica ordered mesoporous materials, which are bioactive and exhibit – as an added value – a possible application as matrices for the controlled release of biologically active molecules (drugs, peptides, hormones, etc.). Finally, by combining the bioactive glasses composition with synthesis strategies of mesoporous materials, template glasses with ordered mesoporosity can be obtained. In this chapter, the advances that sol–gel technology has brought to the silica-based bioactive bioceramics are presented.
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Poly(dimethylsiloxane) networks modified with poly(phenylsilsesquioxane)s: Synthesis, structural characterisation and evaluation of the thermal stability and gas permeability. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.07.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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