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Bootchanont A, Chaosuan N, Promdee S, Teeka J, Kidkhunthod P, Yimnirun R, Sailuam W, Isran N, Jiamprasertboon A, Siritanon T, Eknapakul T, Saisopa T. Correlation between biomedical and structural properties of Zn/Sr modified calcium phosphates. Biometals 2024:10.1007/s10534-024-00599-w. [PMID: 38805106 DOI: 10.1007/s10534-024-00599-w] [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: 10/31/2023] [Accepted: 03/13/2024] [Indexed: 05/29/2024]
Abstract
This study investigates the correlation between the biomedical and structural properties of Zn/Sr-modified Calcium Phosphates (ZnSr-CaPs) synthesized via the sol-gel combustion method. X-ray diffraction (XRD) analysis revealed the presence of Ca10(PO4)6(OH)2 (HAp), CaCO3, and Ca(OH)2 phases in the undoped sample, while the additional phase, Ca3(PO4)2 (β-TCP) was formed in modified samples. X-ray absorption near-edge structure (XANES) analysis demonstrated the incorporation of Sr into the lattice, with a preference for occupying the Ca1 sites in the HAp matrix. The introduction of Zn, furthermore, led to the formation of ZnO and CaZnO2 species. The ZnSr-CaPs exhibited significant antibacterial activity attributed to the generation of reactive oxygen species by ZnO, the oxidation reaction of CaZnO2, and the presence of Sr ions. Cytotoxicity tests revealed a correlation between the variation in ZnO content and cellular viability, with lower ZnO concentrations corresponding to higher cell viability. Additionally, the cooperative effects of Zn and Sr ions were found to enhance the bioactivity of CaPs, despite ZnO hindering the apatite formation process. These findings contribute to the deep understanding of the diverse role in modulating the antibacterial, cytotoxic, and bioactive properties of ZnSr-CaPs, offering potential applications in the field of biomaterials.
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Affiliation(s)
- Atipong Bootchanont
- Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, Pathum Thani, 12110, Thailand
- Smart Materials Research Unit, Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, Pathum Thani, 12110, Thailand
| | - Natthaphon Chaosuan
- Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, Pathum Thani, 12110, Thailand
| | - Sasina Promdee
- Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, Pathum Thani, 12110, Thailand
| | - Jantima Teeka
- Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, Pathum Thani, 12110, Thailand
| | - Pinit Kidkhunthod
- Synchrotron Light Research Institute, Nakhon Ratchasima, 30000, Thailand
| | - Rattikorn Yimnirun
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Wutthigrai Sailuam
- Department of Applied Physics, Faculty of Engineering, Rajamangala University of Technology ISAN (Khon Kaen Campus), Khon Kaen, 40000, Thailand
| | - Nutthaporn Isran
- Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, Pathum Thani, 12110, Thailand
| | - Arreerat Jiamprasertboon
- Functional Materials and Nanotechnology Center of Excellence, School of Science, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Theeranun Siritanon
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Tanachat Eknapakul
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
- Functional Materials and Nanotechnology Center of Excellence, School of Science, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Thanit Saisopa
- Department of Applied Physics, Faculty of Sciences and Liberal Arts, Rajamangala University of Technology Isan, Nakhon Ratchasima, 30000, Thailand.
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Van TTT, Makkar P, Farwa U, Lee BT. Development of a novel polycaprolactone based composite membrane for periodontal regeneration using spin coating technique. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:783-800. [PMID: 34931600 DOI: 10.1080/09205063.2021.2020414] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Guided bone regeneration (GBR) is known to prevent the development of soft tissue on the defect sites as well as support the new bone formation on the other end. In the present study, we developed a multilayer biodegradable membrane for GBR applications. The multilayer membrane is primarily composed of β-tricalcium phosphate (TCP), polycaprolactone (PCL), and hyaluronic acid (HA), prepared by the spin-coating method. The triple layer system has PCL-TCP composite layer on top, a PCL layer in the middle, and PCL-HA as the bottom layer. The characterization of the PCL-TCP/PCL/PCL-HA by various techniques such as SEM, EDS, XRD, and FT-IR supported the uniform formation of the triple layers with an overall thickness of ∼ 72 µm. Multilayer composite membrane showed excellent physical parameters; neutral pH, high hydrophilicity, high swelling rate, low degradation rate, and high apatite formation after immersion in simulated body fluid (SBF) for 14 days. The multilayer membrane also exhibited biocompatibility which is evident by MTT assay and confocal images. The results suggested that the multilayer composite membrane has the potential for GBR applications.
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Affiliation(s)
- Tran Thi Tuong Van
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Preeti Makkar
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Ume Farwa
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
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3
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Farhat W, Biundo A, Stamm A, Malmström E, Syrén P. Lactone monomers obtained by enzyme catalysis and their use in reversible thermoresponsive networks. J Appl Polym Sci 2020. [DOI: 10.1002/app.48949] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wissam Farhat
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
| | - Antonino Biundo
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
| | - Arne Stamm
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
| | - Eva Malmström
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
| | - Per‐Olof Syrén
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
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4
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Farhat W, Stamm A, Robert-Monpate M, Biundo A, Syrén PO. Biocatalysis for terpene-based polymers. ACTA ACUST UNITED AC 2019; 74:91-100. [PMID: 30789828 DOI: 10.1515/znc-2018-0199] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 01/24/2019] [Indexed: 12/11/2022]
Abstract
Accelerated generation of bio-based materials is vital to replace current synthetic polymers obtained from petroleum with more sustainable options. However, many building blocks available from renewable resources mainly contain unreactive carbon-carbon bonds, which obstructs their efficient polymerization. Herein, we highlight the potential of applying biocatalysis to afford tailored functionalization of the inert carbocyclic core of multicyclic terpenes toward advanced materials. As a showcase, we unlock the inherent monomer reactivity of norcamphor, a bicyclic ketone used as a monoterpene model system in this study, to afford polyesters with unprecedented backbones. The efficiencies of the chemical and enzymatic Baeyer-Villiger transformation in generating key lactone intermediates are compared. The concepts discussed herein are widely applicable for the valorization of terpenes and other cyclic building blocks using chemoenzymatic strategies.
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Affiliation(s)
- Wissam Farhat
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden.,Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden
| | - Arne Stamm
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden.,Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden
| | - Maxime Robert-Monpate
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden.,Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden
| | - Antonino Biundo
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden.,Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden
| | - Per-Olof Syrén
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden.,Science for Life Laboratory, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Tomtebodavägen 23, Box 1031, 171 21 Solna, Stockholm, Sweden.,Wallenberg Wood Science Center, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
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Terzopoulou Z, Baciu D, Gounari E, Steriotis T, Charalambopoulou G, Bikiaris D. Biocompatible Nanobioglass Reinforced Poly(ε-Caprolactone) Composites Synthesized via In Situ Ring Opening Polymerization. Polymers (Basel) 2018; 10:polym10040381. [PMID: 30966416 PMCID: PMC6415238 DOI: 10.3390/polym10040381] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/25/2018] [Accepted: 03/27/2018] [Indexed: 12/22/2022] Open
Abstract
Poly(ε-caprolactone) (PCL) is a bioresorbable synthetic polyester widely studied as a biomaterial for tissue engineering and controlled release applications, but its low bioactivity and weak mechanical performance limits its applications. In this work, nanosized bioglasses with two different compositions (SiO2–CaO and SiO2–CaO–P2O5) were synthesized with a hydrothermal method, and each one was used as filler in the preparation of PCL nanocomposites via the in situ ring opening polymerization of ε-caprolactone. The effect of the addition of 0.5, 1 and 2.5 wt % of the nanofillers on the molecular weight, structural, mechanical and thermal properties of the polymer nanocomposites, as well as on their enzymatic hydrolysis rate, bioactivity and biocompatibility was systematically investigated. All nanocomposites exhibited higher molecular weight values in comparison with neat PCL, and mechanical properties were enhanced for the 0.5 and 1 wt % filler content, which was attributed to extensive interactions between the filler and the matrix, proving the superiority of in situ polymerization over solution mixing and melt compounding. Both bioglasses accelerated the enzymatic degradation of PCL and induced bioactivity, since apatite was formed on the surface of the nanocomposites after soaking in simulated body fluid. Finally, all samples were biocompatible as Wharton jelly-derived mesenchymal stem cells (WJ-MSCs) attached and proliferated on their surfaces.
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Affiliation(s)
- Zoi Terzopoulou
- Laboratory of Polymers Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR54124 Thessaloniki, Greece.
| | - Diana Baciu
- National Center for Scientific Research "Demokritos", Ag. Paraskevi Attikis, Athens GR15341, Greece.
| | - Eleni Gounari
- Biohellenika Biotechnology Company, Leoforos Georgikis Scholis 65, GR57001 Thessaloniki, Greece.
| | - Theodore Steriotis
- National Center for Scientific Research "Demokritos", Ag. Paraskevi Attikis, Athens GR15341, Greece.
| | - Georgia Charalambopoulou
- National Center for Scientific Research "Demokritos", Ag. Paraskevi Attikis, Athens GR15341, Greece.
| | - Dimitrios Bikiaris
- Laboratory of Polymers Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR54124 Thessaloniki, Greece.
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Tamjid E. Three-dimensional polycaprolactone-bioactive glass composite scaffolds: Effect of particle size and volume fraction on mechanical properties and in vitro cellular behavior. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1417285] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Elnaz Tamjid
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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7
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Effect of the Chemical Composition of Simulated Body Fluids on Aerogel-Based Bioactive Composites. JOURNAL OF COMPOSITES SCIENCE 2017. [DOI: 10.3390/jcs1020015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Dziadek M, Stodolak-Zych E, Cholewa-Kowalska K. Biodegradable ceramic-polymer composites for biomedical applications: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 71:1175-1191. [PMID: 27987674 DOI: 10.1016/j.msec.2016.10.014] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/18/2016] [Accepted: 10/13/2016] [Indexed: 01/11/2023]
Abstract
The present work focuses on the state-of-the-art of biodegradable ceramic-polymer composites with particular emphasis on influence of various types of ceramic fillers on properties of the composites. First, the general needs to create composite materials for medical applications are briefly introduced. Second, various types of polymeric materials used as matrices of ceramic-containing composites and their properties are reviewed. Third, silica nanocomposites and their material as well as biological characteristics are presented. Fourth, different types of glass fillers including silicate, borate and phosphate glasses and their effect on a number of properties of the composites are described. Fifth, wollastonite as a composite modifier and its effect on composite characteristics are discussed. Sixth, composites containing calcium phosphate ceramics, namely hydroxyapatite, tricalcium phosphate and biphasic calcium phosphate are presented. Finally, general possibilities for control of properties of composite materials are highlighted.
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Affiliation(s)
- Michal Dziadek
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Glass Technology and Amorphous Coatings, 30 Mickiewicza Ave., 30-059 Krakow, Poland.
| | - Ewa Stodolak-Zych
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Biomaterials, 30 Mickiewicza Ave., 30-059 Krakow, Poland.
| | - Katarzyna Cholewa-Kowalska
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Glass Technology and Amorphous Coatings, 30 Mickiewicza Ave., 30-059 Krakow, Poland.
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Ranne T, Tirri T, Yli-Urpo A, Närhi T, Laine V, Rich J, Seppälä J, Aho A. In Vivo Behavior of Poly(∈-Caprolactone-co-DL-Lactide)/Bioactive Glass Composites in Rat Subcutaneous Tissue. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911507078270] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this study, tissue reactions and possible toxicological responses of two different bioactive and degradable composite materials consisting of poly( ∈-caprolactone-co-DL-lactide) and bioactive glass (S53P4) granules were evaluated. The chosen materials were implanted subcutaneously in the back of rats for six months. The glass granules retained their bioactivity within the polymer matrices. A fibrous capsule formed around all tested materials and around the materials containing bioactive glass the fibrous capsules appeared to be thicker. Tissue growth into these materials was observed during the healing period while no growth was noticed into the plain polymer matrices. No adverse reactions were seen with any of the evaluated materials.
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Affiliation(s)
- T. Ranne
- Department of Prosthetic Dentistry and Biomaterials Science
| | - T. Tirri
- Department of Prosthetic Dentistry and Biomaterials Science,
| | - A. Yli-Urpo
- Department of Prosthetic Dentistry and Biomaterials Science
| | - T.O. Närhi
- Department of Prosthetic Dentistry and Biomaterials Science
| | - V.J.O. Laine
- Department of Pathology, University of Turku, Turku 20520, Finland
| | - J. Rich
- Department of Chemical Technology, Helsinki University of Technology, Espoo 02150, Finland
| | - J. Seppälä
- Department of Chemical Technology, Helsinki University of Technology, Espoo 02150, Finland
| | - A. Aho
- Department of Surgery, University of Turku, Turku 20520, Finland
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In vitro and in vivo bone formation potential of surface calcium phosphate-coated polycaprolactone and polycaprolactone/bioactive glass composite scaffolds. Acta Biomater 2016; 30:319-333. [PMID: 26563472 DOI: 10.1016/j.actbio.2015.11.012] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 10/06/2015] [Accepted: 11/08/2015] [Indexed: 11/22/2022]
Abstract
In this study, polycaprolactone (PCL)-based composite scaffolds containing 50wt% of 45S5 Bioglass(®) (45S5) or strontium-substituted bioactive glass (SrBG) particles were fabricated into scaffolds using an additive manufacturing technique for bone tissue engineering purposes. The PCL scaffolds were surface coated with calcium phosphate (CaP) to enable further comparison of the osteoinductive potential of different scaffolds: PCL (control), PCL/CaP-coated, PCL/50-45S5 and PCL/50-SrBG scaffolds. The PCL/50-45S5 and PCL/50-SrBG composite scaffolds were reproducibly manufactured with a morphology highly resembling that of PCL only scaffolds. However, 50wt% loading of the bioactive glass (BG) particles into the PCL bulk decreased the scaffold's compressive Young's modulus. Coating of PCL scaffolds with CaP had a negligible effect on the scaffold's porosity and compressive Young's modulus. When immersed in culture media, BG dissolution ions (Si and Sr) were detected for up to 10weeks in the immersion media and surface precipitates were formed on both PCL/50-45S5 and PCL/50-SrBG scaffolds' surfaces, indicating good in vitro bioactivity. In vitro cell studies were conducted using sheep bone marrow stromal cells (BMSCs) under non-osteogenic or osteogenic conditioned media, and under static or dynamic culture environments. All scaffolds were able to support cell adhesion, growth and proliferation. However, when cultured in non-osteogenic media, only PCL/CaP, PCL/50-45S5 and PCL/50-SrBG scaffolds showed an up-regulation of osteogenic gene expression. Additionally, under a dynamic culture environment, the rate of cell growth, proliferation and osteoblast-related gene expression was enhanced across all scaffold groups. Subsequently, PCL/CaP, PCL/50-45S5 and PCL/50-SrBG scaffolds, with or without seeded cells, were implanted subcutaneously into nude rats for the evaluation of osteoinductivity potential. After 8 and 16weeks, host tissue infiltrated well into the scaffolds, but no mature bone formation was observed in any scaffolds groups. STATEMENT OF SIGNIFICANCE This novelty of this research work is that it provide a comprehensive comparison, both in vitro and in vivo, between 3 different composite materials widely used in the field of bone tissue engineering for their bone regeneration capabilities. The materials used in this study include polycaprolactone, 45S5 Bioglass, strontium-substituted bioactive glass and calcium phosphate. Additionally, the composite materials were fabricated into the form of 3D scaffolds using additive manufacturing technique, a widely used technique in tissue engineering.
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Bioactive glass reinforced elastomer composites for skeletal regeneration: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 53:175-88. [DOI: 10.1016/j.msec.2015.04.035] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 04/02/2015] [Accepted: 04/21/2015] [Indexed: 01/21/2023]
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Vallittu PK, Närhi TO, Hupa L. Fiber glass–bioactive glass composite for bone replacing and bone anchoring implants. Dent Mater 2015; 31:371-81. [DOI: 10.1016/j.dental.2015.01.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 11/30/2014] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
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13
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In vitro bioactivity and mechanical properties of bioactive glass nanoparticles/polycaprolactone composites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 46:1-9. [DOI: 10.1016/j.msec.2014.09.041] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 08/14/2014] [Accepted: 09/30/2014] [Indexed: 11/19/2022]
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14
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Hydrolytic degradation and bioactivity of lactide and caprolactone based sponge-like scaffolds loaded with bioactive glass particles. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2014.08.021] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Ballo AM, Cekic-Nagas I, Ergun G, Lassila L, Palmquist A, Borchardt P, Lausmaa J, Thomsen P, Vallittu PK, Närhi TO. Osseointegration of fiber-reinforced composite implants: histological and ultrastructural observations. Dent Mater 2014; 30:e384-95. [PMID: 25182369 DOI: 10.1016/j.dental.2014.08.361] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 06/19/2014] [Accepted: 08/08/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the bone tissue response to fiber-reinforced composite (FRC) in comparison with titanium (Ti) implants after 12 weeks of implantation in cancellous bone using histomorphometric and ultrastructural analysis. MATERIALS AND METHODS Thirty grit-blasted cylindrical FRC implants with BisGMA-TEGDMA polymer matrix were fabricated and divided into three groups: (1) 60s light-cured FRC (FRC-L group), (2) 24h polymerized FRC (FRC group), and (3) bioactive glass FRC (FRC-BAG group). Titanium implants were used as a control group. The surface analyses were performed with scanning electron microscopy and 3D SEM. The bone-implant contact (BIC) and bone area (BA) were determined using histomorphometry and SEM. Transmission electron microscopy (TEM) was performed on Focused Ion Beam prepared samples of the intact bone-implant interface. RESULTS The FRC, FRC-BAG and Ti implants were integrated into host bone. In contrast, FRC-L implants had a consistent fibrous capsule around the circumference of the entire implant separating the implant from direct bone contact. The highest values of BIC were obtained with FRC-BAG (58±11%) and Ti implants (54±13%), followed by FRC implants (48±10%), but no significant differences in BIC or BA were observed (p=0.07, p=0.06, respectively). TEM images showed a direct contact between nanocrystalline hydroxyapatite of bone and both FRC and FRC-BAG surfaces. CONCLUSION Fiber-reinforced composite implants are capable of establishing a close bone contact comparable with the osseointegration of titanium implants having similar surface roughness.
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Affiliation(s)
- A M Ballo
- Department of Oral Health Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada; Dental Implant and Osseointegration Research Chair, College of Dentistry at King Saud University, Riyadh, Saudi Arabia.
| | - I Cekic-Nagas
- Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - G Ergun
- Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - L Lassila
- Department of Biomaterials Science and Turku Clinical Biomaterials Centre - TCBC, Institute of Dentistry, University of Turku, Turku, Finland
| | - A Palmquist
- Department of Biomaterials, Institute for Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden; BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - P Borchardt
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden; SP Technical Research Institute Sweden, Borås, Sweden
| | - J Lausmaa
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden; SP Technical Research Institute Sweden, Borås, Sweden
| | - P Thomsen
- Department of Biomaterials, Institute for Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden; BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - P K Vallittu
- Department of Biomaterials Science and Turku Clinical Biomaterials Centre - TCBC, Institute of Dentistry, University of Turku, Turku, Finland
| | - T O Närhi
- Department of Prosthetic Dentistry, Institute of Dentistry, University of Turku, Turku, Finland; Clinic of Oral Diseases, Turku University Central Hospital, Turku, Finland
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Enhanced osteogenicity of bioactive composites with biomimetic treatment. BIOMED RESEARCH INTERNATIONAL 2014; 2014:207676. [PMID: 24812608 PMCID: PMC4000935 DOI: 10.1155/2014/207676] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 03/08/2014] [Indexed: 12/21/2022]
Abstract
Purpose. This study aimed to explore if initiation of biomimetic apatite nucleation can be used to enhance osteoblast response to biodegradable tissue regeneration composite membranes. Materials and Methods. Bioactive thermoplastic composites consisting of poly(ε-caprolactone/DL-lactide) and bioactive glass (BAG) were prepared at different stages of biomimetic calcium phosphate deposition by immersion in simulated body fluid (SBF). The modulation of the BAG dissolution and the osteogenic response of rat mesenchymal stem cells (MSCs) were analyzed. Results. SBF treatment resulted in a gradual calcium phosphate deposition on the composites and decreased BAG reactivity in the subsequent cell cultures. Untreated composites and composites covered by thick calcium phosphate layer (14 days in SBF) expedited MSC mineralization in comparison to neat polymers without BAG, whereas other osteogenic markers—alkaline phosphatase activity, bone sialoprotein, and osteocalcin expression—were initially decreased. In contrast, surfaces with only small calcium phosphate aggregates (five days in SBF) had similar early response than neat polymers but still demonstrated enhanced mineralization. Conclusion. A short biomimetic treatment enhances osteoblast response to bioactive composite membranes.
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Ni P, Ding Q, Fan M, Liao J, Qian Z, Luo J, Li X, Luo F, Yang Z, Wei Y. Injectable thermosensitive PEG–PCL–PEG hydrogel/acellular bone matrix composite for bone regeneration in cranial defects. Biomaterials 2014; 35:236-48. [DOI: 10.1016/j.biomaterials.2013.10.016] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Accepted: 10/02/2013] [Indexed: 10/26/2022]
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Yang SY, Piao YZ, Kim SM, Lee YK, Kim KN, Kim KM. Acid neutralizing, mechanical and physical properties of pit and fissure sealants containing melt-derived 45S5 bioactive glass. Dent Mater 2013; 29:1228-35. [PMID: 24139755 DOI: 10.1016/j.dental.2013.09.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 02/07/2013] [Accepted: 09/16/2013] [Indexed: 12/12/2022]
Abstract
OBJECTIVES The aim of this study was to examine the effects of 45S5 bioactive glass (BAG) on the acid neutralizing, mechanical and physical properties of pit and fissure sealants. METHODS 45S5BAG (<25 μm) was mixed with the silanized glass (180 ± 30 nm) and added into a resin matrix [Bis-GMA/TEGDMA 50/50 (wt%) containing 1% of DMAEMA/CQ 2:1 (wt%)] with varying filler proportions; 0% 45S5BAG+50% glass (BAG0); 12.5% 45S5BAG+37.5% glass (BAG12.5); 25% 45S5BAG+25% glass (BAG25); 37.5% 45S5BAG+12.5% glass (BAG37.5); and 50% 45S5BAG+0% glass (BAG50). To evaluate the acid neutralizing properties, specimens were immersed in lactic acid solution (pH 4.0). Then, the change in pH and the time required to raise the pH from 4.0 to 5.5 were measured. In addition, flexural strength, water sorption and solubility were analyzed. RESULTS The acid neutralizing properties of each group exhibited increasing pH values as more 45S5BAG was added, and the time required to raise the pH from 4.0 to 5.5 became shorter as the proportion of 45S5BAG increased (P<0.05). Additionally, the flexural strength decreased according to the increasing proportions of 45S5BAG added (P<0.05). Water sorption showed an increasing trend with increasing proportions of 45S5 BAG added (P<0.05). However, the solubility results were similar among the groups (P>0.05), except for BAG50. SIGNIFICANCE The novel pit and fissure sealants neutralized the acid solution (pH 4.0) and exhibited appropriate mechanical and physical properties. Therefore, these compounds are suitable candidates for caries-inhibiting dental materials.
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Affiliation(s)
- Song-Yi Yang
- Department and Research Institute of Dental Biomaterials and Bioengineering, College of Dentistry, Yonsei University, Seoul, Republic of Korea
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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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Diamanti E, Sarasua JR. Effects of Bioactive Glass Particles on the Mechanical and Thermal Behavior of Poly(ε-caprolactone). ACTA ACUST UNITED AC 2012. [DOI: 10.1002/masy.201251104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Characterization, and antibacterial properties of novel silver releasing nanocomposite scaffolds fabricated by the gas foaming/salt-leaching technique. JOURNAL OF GENETIC ENGINEERING AND BIOTECHNOLOGY 2012. [DOI: 10.1016/j.jgeb.2012.07.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Meretoja VV, Tirri T, Malin M, Seppälä JV, Närhi TO. Ectopic bone formation in and soft-tissue response to P(CL/DLLA)/bioactive glass composite scaffolds. Clin Oral Implants Res 2012; 25:159-64. [DOI: 10.1111/clr.12051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2012] [Indexed: 02/01/2023]
Affiliation(s)
- Ville V. Meretoja
- Department of Prosthetic Dentistry; Institute of Dentistry; University of Turku; Turku Finland
- Turku Clinical Biomaterials Center; Turku Finland
| | - Teemu Tirri
- Department of Prosthetic Dentistry; Institute of Dentistry; University of Turku; Turku Finland
- Turku Clinical Biomaterials Center; Turku Finland
| | - Minna Malin
- Aalto University; School of Chemical Technology; Polymer Technology AALTO, Finland
| | - Jukka V. Seppälä
- Aalto University; School of Chemical Technology; Polymer Technology AALTO, Finland
| | - Timo O. Närhi
- Department of Prosthetic Dentistry; Institute of Dentistry; University of Turku; Turku Finland
- Turku Clinical Biomaterials Center; Turku Finland
- Clinic of Oral Diseases; Turku University Central Hospital; Turku Finland
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Phase composition and in vitro bioactivity of porous implants made of bioactive glass S53P4. Acta Biomater 2012; 8:2331-9. [PMID: 22409875 DOI: 10.1016/j.actbio.2012.03.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 02/14/2012] [Accepted: 03/05/2012] [Indexed: 11/20/2022]
Abstract
This work studied the influence of sintering temperature on the phase composition, compression strength and in vitro properties of implants made of bioactive glass S53P4. The implants were sintered within the temperature range 600-1000°C. Over the whole temperature range studied, consolidation took place mainly via viscous flow sintering, even though there was partial surface crystallization. The mechanical strength of the implants was low but increased with the sintering temperature, from 0.7 MPa at 635°C to 10 MPa at 1000°C. Changes in the composition of simulated body fluid (SBF), the immersion solution, were evaluated by pH measurements and ion analysis using inductively coupled plasma optical emission spectrometry. The development of a calcium phosphate layer on the implant surfaces was verified using scanning electron microscopy-electron-dispersive X-ray analysis. When immersed in SBF, a calcium phosphate layer formed on all the samples, but the structure of this layer was affected by the surface crystalline phases. Hydroxyapatite formed more readily on amorphous and partially crystalline implants containing both primary Na(2)O·CaO·2SiO(2) and secondary Na(2)Ca(4)(PO(4))(2)SiO(4) crystals than on implants containing only primary crystals.
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Laattala K, Huhtinen R, Puska M, Arstila H, Hupa L, Kellomäki M, Vallittu PK. Bioactive composite for keratoprosthesis skirt. J Mech Behav Biomed Mater 2011; 4:1700-8. [DOI: 10.1016/j.jmbbm.2011.05.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 05/11/2011] [Accepted: 05/15/2011] [Indexed: 10/18/2022]
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Tamjid E, Bagheri R, Vossoughi M, Simchi A. Effect of particle size on the in vitro bioactivity, hydrophilicity and mechanical properties of bioactive glass-reinforced polycaprolactone composites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2011.06.013] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Ginsac N, Chenal JM, Meille S, Pacard E, Zenati R, Hartmann DJ, Chevalier J. Crystallization processes at the surface of polylactic acid-bioactive glass composites during immersion in simulated body fluid. J Biomed Mater Res B Appl Biomater 2011; 99:412-9. [DOI: 10.1002/jbm.b.31913] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 04/18/2011] [Accepted: 05/08/2011] [Indexed: 11/09/2022]
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Sabetrasekh R, Tiainen H, Lyngstadaas SP, Reseland J, Haugen H. A Novel Ultra-porous Titanium Dioxide Ceramic with Excellent Biocompatibility. J Biomater Appl 2010; 25:559-80. [DOI: 10.1177/0885328209354925] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The current study compares biocompatibility, cell growth and morphology, pore diameter distribution, and interconnectivity of a novel titanium dioxide (TiO2) bone graft substitute granules with three different commercially available bone graft granules Natix®, Straumann® BoneCeramic, and Bio-Oss®. Human primary mesenchymal stem cells were cultured on the bone graft substitutes and cell viability and proliferation were evaluated after 1 and 3 days. The microstructural properties of the bone graft substitutes were evaluated by scanning electron microscopy, micro-computed tomography analysis, and mechanical testing. The cell viability and proliferation, porosity, interconnectivity, open pore size, and surface area-to-volume ratio of TiO2 granules were significantly higher than commercial bone granules (Bio-Oss® and Straumann ® BoneCeramic).
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Affiliation(s)
- Roya Sabetrasekh
- Department for Biomaterials, Faculty for Dentistry, University of Oslo NO-0317 Oslo, Norway
| | - Hanna Tiainen
- Department for Biomaterials, Faculty for Dentistry, University of Oslo NO-0317 Oslo, Norway
| | - S. Petter Lyngstadaas
- Department for Biomaterials, Faculty for Dentistry, University of Oslo NO-0317 Oslo, Norway
| | - Janne Reseland
- Department for Biomaterials, Faculty for Dentistry, University of Oslo NO-0317 Oslo, Norway
| | - Håvard Haugen
- Department for Biomaterials, Faculty for Dentistry, University of Oslo NO-0317 Oslo, Norway,
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El-Kady AM, Ali AF, Farag MM. Development, characterization, and in vitro bioactivity studies of sol–gel bioactive glass/poly(l-lactide) nanocomposite scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010. [DOI: 10.1016/j.msec.2009.09.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Vallés Lluch A, Gallego Ferrer G, Monleón Pradas M. Biomimetic apatite coating on P(EMA-co-HEA)/SiO2 hybrid nanocomposites. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.04.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Adhesion of respiratory-infection-associated microorganisms on degradable thermoplastic composites. Int J Biomater 2009; 2009:765813. [PMID: 20130804 PMCID: PMC2814101 DOI: 10.1155/2009/765813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2008] [Accepted: 03/03/2009] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study was to evaluate bacterial adhesion and early colonization on a composite consisting of bioactive glass (BAG) particles and copolymer of epsilon-caprolactone/D,L-lactide. Materials were incubated with suspensions of both type strains and clinical isolates of Streptococcus pneumoniae, Haemophilus influenzae, and Pseudomonas aeruginosa for 30 minutes (adhesion) and 4 hours (colonization). Clear differences exist in the microorganisms' ability to adhere on the experimental materials. However, the presence of BAG particles does not inhibit bacterial adhesion, but early colonization of the materials with P. aeruginosa was inhibited by the addition of 90-315 mum BAG particles.
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Ballo AM, Akca EA, Ozen T, Lassila L, Vallittu PK, Närhi TO. Bone tissue responses to glass fiber-reinforced composite implants - a histomorphometric study. Clin Oral Implants Res 2009; 20:608-15. [DOI: 10.1111/j.1600-0501.2008.01700.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
At present, strong requirements in orthopaedics are still to be met, both in bone and joint substitution and in the repair and regeneration of bone defects. In this framework, tremendous advances in the biomaterials field have been made in the last 50 years where materials intended for biomedical purposes have evolved through three different generations, namely first generation (bioinert materials), second generation (bioactive and biodegradable materials) and third generation (materials designed to stimulate specific responses at the molecular level). In this review, the evolution of different metals, ceramics and polymers most commonly used in orthopaedic applications is discussed, as well as the different approaches used to fulfil the challenges faced by this medical field.
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Affiliation(s)
- M Navarro
- Biomaterials, Implants and Tissue Engineering, Institute for Bioengineering of Catalonia (IBEC), CIBER-BBN, 08028 Barcelona, Spain.
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Hong Z, Reis RL, Mano JF. Preparation and in vitro characterization of scaffolds of poly(L-lactic acid) containing bioactive glass ceramic nanoparticles. Acta Biomater 2008; 4:1297-306. [PMID: 18439885 DOI: 10.1016/j.actbio.2008.03.007] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Revised: 03/04/2008] [Accepted: 03/20/2008] [Indexed: 11/17/2022]
Abstract
Porous nanocomposite scaffolds of poly(l-lactic acid) (PLLA) containing different quantities of bioactive glass ceramic (BGC) nanoparticles (SiO(2):CaO:P(2)O(5) approximately 55:40:5 (mol)) were prepared by a thermally induced phase-separation method. Dioxane was used as the solvent for PLLA. Introduction of less than 20wt.% of BGC nanoparticles did not remarkably affect the porosity of PLLA foam. However, as the BGC content increased to 30wt.%, the porosity of the composite was observed to decrease rapidly. The compressive modulus of the scaffolds increased from 5.5 to 8.0MPa, while the compressive strength increased from 0.28 to 0.35MPa as the BGC content increased from 0 to 30wt.%. The in vitro bioactivity and biodegradability of nanocomposites were investigated by incubation in simulated body fluid (SBF) and phosphate-buffered saline, respectively. Scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy and X-ray diffraction were employed to monitor the surface variation of neat PLLA and PLLA/BGC porous scaffolds during incubation. PLLA/(20wt.%)BGC composite exhibited the best mineralization property in SBF, while the PLLA/(10wt.%)BGC composite showed the highest water absorption ability.
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Affiliation(s)
- Zhongkui Hong
- University of Minho, 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, Campus de Gualtar, 4710-057 Braga, Portugal
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Chouzouri G, Xanthos M. In vitro bioactivity and degradation of polycaprolactone composites containing silicate fillers. Acta Biomater 2007; 3:745-56. [PMID: 17392042 DOI: 10.1016/j.actbio.2007.01.005] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2006] [Revised: 12/21/2006] [Accepted: 01/10/2007] [Indexed: 11/16/2022]
Abstract
In spite of numerous publications on the potential use of combinations of polycaprolactone (PCL)/bioactive fillers for bone regeneration, little information exists on the assessment of solid, nonporous composites prepared via solventless routes and consisting of unmodified, slowly degrading homopolymer with relatively low amounts of reactive fillers such as bioglass or calcium silicate (CS). Thus, composites of PCL with commercial CS and a bioactive glass (BG45S5) at 30wt.% were produced by melt mixing in a twin screw extruder. Neat fillers, PCL and their composites were immersed in simulated body fluid (SBF) and phosphate buffer saline and tested for in vitro bioactivity and degradation, respectively, over a 4 month period. Testing methods included scanning electron microscopy with energy dispersive X-ray analysis, X-ray diffraction (XRD), elemental analysis and weight and pH changes before and after immersion. Experiments with neat fillers indicated fast growth of calcium phosphate minerals having different textures; they included clusters and globules of mineral precipitates as well as needle-shaped nanosized crystallites and possibly other calcium phosphate structures with varying Ca/P ratio. The bioactive glass composite initially showed fast growth of the precipitated minerals and partial surface coverage after 1 week, whereas in the CS composite, growth and surface coverage increased as a function of immersion time (over a period of 4 weeks) in the SBF solution. XRD results showed early appearance (1 week) of hydroxyapatite for both types of composites with differences attributed to different dissolution rates and different surface reactions of the fillers. Both fillers appeared to enhance the hydrolytic degradation of the matrix. Overall, the limited observed bioactivity of both composites within the test period may be related to the hydrophobicity of the matrix, insufficient ionic activity since SBF was not replenished and the relatively low content of the low surface areas fillers. Optimization of filler properties, such as surface/volume ratio, surface chemistry and size range, appears as a most important factor that would provide, at the required high filler volume fractions, a balance of melt processability and bioactivity.
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Affiliation(s)
- Georgia Chouzouri
- Otto H. York Department of Chemical Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA
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Zhou G, Li Y, Zhang L, Zuo Y, Jansen JA. Preparation and characterization of nano‐hydroxyapatite/chitosan/konjac glucomannan composite. J Biomed Mater Res A 2007; 83:931-939. [PMID: 17567862 DOI: 10.1002/jbm.a.31427] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Nano-hydroxyapatite (n-HA)/chitosan (CS)/konjac glucomannan (KGM) composite was prepared by coprecipitation method and investigated by thermal gravitivity/differentiate thermal analysis, Fourier transform infrared spectroscopy, X-ray diffraction, inductively coupled plasma emission spectroscopy, scanning electron microscopy, and energy dispersive X-ray analyzer. The analyses showed that the three phases of n-HA, CS, and KGM combined closely to each other. Further, in vitro tests were conducted to investigate the degradation and bioactivity of the composite. During immersion in simulated body fluid (SBF), pores appeared and a new substance containing Ca and P formed on the surface of the composite. Also, the concentration of Ca and P in SBF changed and weight loss of the composite was observed during time. The composite revealed a high degradation in SBF. Evidently, the new composite has a potential to be used as a carrier of implantable drug delivery system. The biodegradation rate and route could be different from CS and KGM, which will provide an opportunity to control the degradation rate or drug releasing rate by simply adjusting the ratio of CS and KGM.
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Affiliation(s)
- Gang Zhou
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yubao Li
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China
| | - Li Zhang
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China
| | - Yi Zuo
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610064, China
| | - John A Jansen
- Department of Periodontology and Biomaterials, Radboud University Nijmegen Medical Center, Nijimegen, The Netherlands
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Meretoja VV, Helminen AO, Korventausta JJ, Haapa-aho V, Seppälä JV, Närhi TO. Crosslinked poly(epsilon-caprolactone/D,L-lactide)/bioactive glass composite scaffolds for bone tissue engineering. J Biomed Mater Res A 2006; 77:261-8. [PMID: 16392138 DOI: 10.1002/jbm.a.30630] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A series of elastic polymer and composite scaffolds for bone tissue engineering applications were designed. Two crosslinked copolymer matrices with 90/10 and 30/70 mol % of epsilon-caprolactone (CL) and D,L-lactide (DLLA) were prepared with porosities from 45 to 85 vol % and their mechanical and degradation properties were tested. Corresponding composite scaffolds with 20-50 wt % of particulate bioactive glass (BAG) were also characterized. Compressive modulus of polymer scaffolds ranged from 190+/-10 to 900+/-90 kPa. Lactide rich scaffolds absorbed up to 290 wt % of water in 4 weeks and mainly lost their mechanical properties. Caprolactone rich scaffolds absorbed no more than 110 wt % of water in 12 weeks and kept their mechanical integrity. Polymer and composite scaffolds prepared with P(CL/DLLA 90/10) matrix and 60 vol % porosity were further analyzed in simulated body fluid and in osteoblast culture. Cell growth was compromised inside the 2 mm thick three-dimensional scaffold specimens as a static culture model was used. However, composite scaffolds with BAG showed increased osteoblast adhesion and mineralization when compared to neat polymer scaffolds.
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Affiliation(s)
- V V Meretoja
- Department of Prosthetic Dentistry and Biomaterials Science, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, FI-20520 Turku, Finland.
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Abstract
Synthetic bioactive and bioresorbable composite materials are becoming increasingly important as scaffolds for tissue engineering. Next-generation biomaterials should combine bioactive and bioresorbable properties to activate in vivo mechanisms of tissue regeneration, stimulating the body to heal itself and leading to replacement of the scaffold by the regenerating tissue. Certain bioactive ceramics such as tricalcium phosphate and hydroxyapatite as well as bioactive glasses, such as 45S5 Bioglass, react with physiologic fluids to form tenacious bonds with hard (and in some cases soft) tissue. However, these bioactive materials are relatively stiff, brittle and difficult to form into complex shapes. Conversely, synthetic bioresorbable polymers are easily fabricated into complex structures, yet they are too weak to meet the demands of surgery and the in vivo physiologic environment. Composites of tailored physical, biologic and mechanical properties as well as predictable degradation behavior can be produced combining bioresorbable polymers and bioactive inorganic phases. This review covers recent international research presenting the state-of-the-art development of these composite systems in terms of material constituents, fabrication technologies, structural and bioactive properties, as well as in vitro and in vivo characteristics for applications in tissue engineering and tissue regeneration. These materials may represent the effective optimal solution for tailored tissue engineering scaffolds, making tissue engineering a realistic clinical alternative in the near future.
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Affiliation(s)
- Aldo R Boccaccini
- Department of Materials and Centre for Tissue Engineering and Regenerative Medicine, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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Peña J, Corrales T, Izquierdo-Barba I, Doadrio AL, Vallet-Regí M. Long term degradation of poly(ɛ-caprolactone) films in biologically related fluids. Polym Degrad Stab 2006. [DOI: 10.1016/j.polymdegradstab.2005.10.016] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Rezwan K, Chen QZ, Blaker JJ, Boccaccini AR. Biodegradable and bioactive porous polymer/inorganic composite scaffolds for bone tissue engineering. Biomaterials 2006; 27:3413-31. [PMID: 16504284 DOI: 10.1016/j.biomaterials.2006.01.039] [Citation(s) in RCA: 2115] [Impact Index Per Article: 117.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2005] [Accepted: 01/31/2006] [Indexed: 11/27/2022]
Abstract
Biodegradable polymers and bioactive ceramics are being combined in a variety of composite materials for tissue engineering scaffolds. Materials and fabrication routes for three-dimensional (3D) scaffolds with interconnected high porosities suitable for bone tissue engineering are reviewed. Different polymer and ceramic compositions applied and their impact on biodegradability and bioactivity of the scaffolds are discussed, including in vitro and in vivo assessments. The mechanical properties of today's available porous scaffolds are analyzed in detail, revealing insufficient elastic stiffness and compressive strength compared to human bone. Further challenges in scaffold fabrication for tissue engineering such as biomolecules incorporation, surface functionalization and 3D scaffold characterization are discussed, giving possible solution strategies. Stem cell incorporation into scaffolds as a future trend is addressed shortly, highlighting the immense potential for creating next-generation synthetic/living composite biomaterials that feature high adaptiveness to the biological environment.
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Affiliation(s)
- K Rezwan
- Department of Materials, Imperial College London, Prince Consort Road, London SW7 2BP, UK
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Eglin D, Maalheem S, Livage J, Coradin T. In vitro apatite forming ability of type I collagen hydrogels containing bioactive glass and silica sol-gel particles. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2006; 17:161-7. [PMID: 16502249 DOI: 10.1007/s10856-006-6820-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2004] [Accepted: 05/25/2005] [Indexed: 05/06/2023]
Abstract
Type I collagen hydrogel containing bioactive glass (CaO-P2O5-SiO2) and silica sol-gel micrometric particles were prepared and their in vitroapatite-forming ability in simulated body fluid assessed. X-ray diffraction and scanning electron microscopy analysis showed that bioactive glass particles entrapment in collagen matrix did not inhibit calcium phosphate formation and induced morphology variations on the crystalline phase precipitated on the hydrogel surface. The silica--collagen hydrogel composite precipitated calcium phosphate whereas silica particles and collagen hydrogel alone did not, indicating a possible synergetic effect between collagen and silica on the apatite-forming ability. Mechanisms of calcium phosphate precipitation and its relevance to biomaterial development are discussed.
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Affiliation(s)
- David Eglin
- Laboratoire de Chimie de la Matière Condensée, CNRS-UMR 7574, Université Pierre et Marie Curie, 4, Place Jussieu, F-75252, Paris, cedex 05, France
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Yli-Urpo H, Lassila LVJ, Närhi T, Vallittu PK. Compressive strength and surface characterization of glass ionomer cements modified by particles of bioactive glass. Dent Mater 2005; 21:201-9. [PMID: 15705426 DOI: 10.1016/j.dental.2004.03.006] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2003] [Revised: 03/01/2004] [Accepted: 03/25/2004] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The aim of this study was to determine compressive strength, Young's modulus of elasticity, and Vickers' surface hardness, of conventional cure and resin-modified glass ionomer cements after the addition of bioactive glass (BAG) particles into the cements. METHODS Experimental glass ionomer cement (GIC)-BAG materials were made by mixing 10- or 30-wt% of BAG particles with conventional cure and resin-modified GIC powders. Materials were processed into cylindrical specimens and immersed in water for 1, 3, 7, 14, 30 and 180 days before mechanical tests. SEM and EDS analysis was used to characterize the changes in surface topography and the main elemental composition. RESULTS The compressive strength of the test specimens decreased with the increasing amount of BAG. The compressive strength of resin-modified GIC increased during the immersion, but remained at a lower level than that of the other materials. The conventional cure GIC-based materials had on average 55% higher surface microhardness than the resin-modified materials. In the elemental composition, more Ca was detected in the BAG-containing materials than in the pure GICs. The amount of F was significantly higher (p < 0.001) on all resin-modified materials, being highest on resin-modified GIC with 30-wt% of BAG after 180d of immersion. SIGNIFICANCE The addition of BAG to GIC compromises the mechanical properties of the materials to some extent. Thus, their clinical use ought to be restricted to applications where their bioactivity can be beneficial, such as root surface fillings and liners in dentistry, and where high compressive strength is not necessarily needed.
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Affiliation(s)
- Helena Yli-Urpo
- Department of Prosthetic Dentistry and Biomaterials Research, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, Turku 20520, Finland.
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