1
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Ozdil D, Günal G, Tevlek A, Aydin HM. Effects of liquid-to-solid ratio and gamma irradiation on the rheology and cytocompatibility of a beta-tricalcium phosphate-based injectable bone substitute. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1086-1104. [PMID: 38401125 DOI: 10.1080/09205063.2024.2318820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/09/2024] [Indexed: 02/26/2024]
Abstract
Injectable bone substitute (IBS) materials are commonly used to fill irregular-shaped bone voids in non-load-bearing areas and can offer greater utility over those which are in prefabricated powder, granule, or block forms. This work investigates the impact of liquid-to-solid ratio (LSR) on the rheology and cytocompatibility of IBSs formulated from bioactive glass particles and β-tricalcium phosphate (β-TCP) in glycerol and poly(ethylene glycol) (PEG). IBS formulations of varying LSR were prepared and packed in 3 cc open-bore syringes and sterilized via gamma irradiation (10 kGy, 25 kGy). Gamma-irradiated formulations with high PEG content required the highest (73 N) mechanical force for injection from syringes. Oscillatory viscosity measurements revealed that the viscosity of samples was directly proportional to glycerol content. PEG and glycerol displayed competing effects on the washout resistance and cohesiveness of samples, which were based on total weight loss in media and Ca2+ ion release, respectively. Cell viability in 24-h extracts of 10 kGy gamma-sterilized and 25 kGy gamma-irradiated samples were 22.94% and 56.53%, respectively. The research highlights the complex interplay of IBS components on IBS rheology and, moreover, the cytotoxicity behaviors of beta-tricalcium phosphate-based injectable bone substitutes by in vitro experiments.
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Affiliation(s)
- Deniz Ozdil
- Bioengineering Division, Institute of Science and Engineering, Hacettepe University, Ankara, Turkey
| | - Gülçin Günal
- Bioengineering Division, Institute of Science and Engineering, Hacettepe University, Ankara, Turkey
- Department of Plastic Surgery, Akdeniz University, Antalya, Turkey
| | - Atakan Tevlek
- Bioengineering Division, Institute of Science and Engineering, Hacettepe University, Ankara, Turkey
- Middle East Technical University, MEMS Research and Application Center, Ankara, Turkey
| | - Halil Murat Aydin
- Bioengineering Division, Institute of Science and Engineering, Hacettepe University, Ankara, Turkey
- Centre for Bioengineering, Hacettepe University, Ankara, Turkey
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2
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Cheng S, Zhao C, Liu S, Chen B, Chen H, Luo X, Wei L, Du C, Xiao P, Lei Y, Yan Y, Huang W. Injectable Self-Setting Ternary Calcium-Based Bone Cement Promotes Bone Repair. ACS OMEGA 2023; 8:16809-16823. [PMID: 37214722 PMCID: PMC10193540 DOI: 10.1021/acsomega.3c00331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 04/20/2023] [Indexed: 05/24/2023]
Abstract
Bone defects, especially large ones, are clinically difficult to treat. The development of new bone repair materials exhibits broad application prospects in the clinical treatment of trauma. Bioceramics are considered to be one of the most promising biomaterials owing to their good biocompatibility and bone conductivity. In this study, a self-curing bone repair material having a controlled degradation rate was prepared by mixing calcium citrate, calcium hydrogen phosphate, and semi-hydrated calcium sulfate in varying proportions, and its properties were comprehensively evaluated. In vitro cell experiments and RNA sequencing showed that the composite cement activated PI3K/Akt and MAPK/Erk signaling pathways to promote osteogenesis by promoting the proliferation and osteoblastic differentiation of mesenchymal stem cells. In a rat model with femoral condyle defects, the composite bone cement showed excellent bone repair effect and promoted bone regeneration. The injectable properties of the composite cement further improved its practical applicability, and it can be applied in bone repair, especially in the repair of irregular bone defects, to achieve superior healing.
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Affiliation(s)
- Shengwen Cheng
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Chen Zhao
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Senrui Liu
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Bowen Chen
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Hong Chen
- College
of Physics, Sichuan University, Chengdu 610064, China
| | - Xuefeng Luo
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Li Wei
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Chengcheng Du
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Pengcheng Xiao
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yiting Lei
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yonggang Yan
- College
of Physics, Sichuan University, Chengdu 610064, China
| | - Wei Huang
- The
First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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3
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Wang J, Cheng Z, Chen D, Li G, Chen J, Wang K, Xu L, Huang J. An injectable porous bioactive magnesium phosphate bone-cement foamed with calcium carbonate and citric acid for periodontal bone regeneration. J Mech Behav Biomed Mater 2023; 142:105805. [PMID: 37087954 DOI: 10.1016/j.jmbbm.2023.105805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/20/2023] [Accepted: 03/24/2023] [Indexed: 04/08/2023]
Abstract
Magnesium phosphate cement (MPC) has been evaluated as a novel bone substitute owing to its favorable biocompatibility, plasticity, and osteogenic potential. However, the low porosity of MPC prevents growth factors and osteoblasts from fully growing into the material, thereby limiting its clinical use. In this study, different concentrations (0-5%) of calcium carbonate and citric acid (CA) were used as foaming agents to prepare porous MPC. The MPC containing 3% CaCO3/CA exhibited the best physicochemical properties, including greater porosity, improved injectability, extended setting time, and decreased hydration temperature. The proliferation and adhesion of cells on 3%CaCO3/CA-MPC were higher than those on MPC alone. To explore its osteogenesis in vivo, 3% CaCO3/CA-MPC and Bio-Oss® bone powder were implanted into periodontal bone defects in rats for 4 weeks and 12 weeks, respectively. Micro-CT and histological analysis demonstrated the improved bone regeneration of 3%CaCO3/CA-MPC compared to the blank group (P < 0.05); it had slightly lower bone regeneration than the Bio-Oss® group but no statistical difference. The results indicated that porous MPC foamed with calcium carbonate and CA improved its physicochemical properties and enhanced its biocompatibility, making it a promising material for bone regeneration.
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4
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Kamal NH, Heikal LA, Ali MM, Aly RG, Abdallah OY. Development and evaluation of local regenerative biomimetic bone-extracellular matrix scaffold loaded with nano-formulated quercetin for orthopedic fractures. BIOMATERIALS ADVANCES 2023; 145:213249. [PMID: 36565670 DOI: 10.1016/j.bioadv.2022.213249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 11/14/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
The prevalence of bone injuries is greatly increasing each year and the proper healing of fractures without any complications is very challenging. Self-setting calcium phosphate cements (CPCs) have attracted great attention as bioactive synthetic bone substitutes. Quercetin (QT) is a multipurposed drug with reported bone-conserving properties. The loading of QT and QT-phospholipid complex within nanostructured lipid carriers (NLC) was proposed to overcome the poor physical properties of the drug and to introduce the use of bioactive excipients as phospholipids and olive oil. The aim of this work was to formulate a regenerative scaffold loaded with nano-formulated QT for local treatment of orthopedic fractures. For the first time, scaffolds composed of brushite CPC were prepared and loaded with quercetin lipid nano-systems. In vitro tests proved that the addition of lipid nano-systems did not deteriorate the properties of CPC where QT-NLC/CPC showed an adequate setting time, appropriate compressive strength, and porosity. The scanning electron microscope confirmed maintenance of nanoparticles integrity within the cement. Using a rat femur bone defect animal model, the histological results showed that the QT-NLC/CPC had a superior bone healing potential compared to crude unformulated QT/CPC. In conclusion, QT-NLC /CPC are promising lipid nano-composite materials that could enhance bone regeneration.
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Affiliation(s)
- Nermeen H Kamal
- Department of Pharmaceutics, Division of Pharmaceutical Sciences, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport, Egypt.
| | - Lamia A Heikal
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
| | - Mai M Ali
- Department of Pharmaceutics, Division of Pharmaceutical Sciences, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport, Egypt.
| | - Rania G Aly
- Department of Pathology, Faculty of Medicine, Alexandria University, Egypt.
| | - Ossama Y Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
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5
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Rial R, Liu Z, Messina P, Ruso JM. Role of nanostructured materials in hard tissue engineering. Adv Colloid Interface Sci 2022; 304:102682. [PMID: 35489142 DOI: 10.1016/j.cis.2022.102682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 04/11/2022] [Accepted: 04/19/2022] [Indexed: 01/05/2023]
Abstract
The rise in the use of biomaterials in bone regeneration in the last decade has exponentially multiplied the number of publications, methods, and approaches to improve and optimize their functionalities and applications. In particular, biomimetic strategies based on the self-assembly of molecules to design, create and characterize nanostructured materials have played a very relevant role. We address this idea on four different but related points: self-setting bone cements based on calcium phosphate, as stable tissue support and regeneration induction; metallic prosthesis coatings for cell adhesion optimization and prevention of inflammatory response exacerbation; bio-adhesive hybrid materials as multiple drug delivery localized platforms and finally bio-inks. The effect of the physical, chemical, and biological properties of the newest biomedical devices on their bone tissue regenerative capacity are summarized, described, and analyzed in detail. The roles of experimental conditions, characterization methods and synthesis routes are emphasized. Finally, the future opportunities and challenges of nanostructured biomaterials with their advantages and shortcomings are proposed in order to forecast the future directions of this field of research.
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Minamisawa H, Kojima Y, Aizawa M. Adsorption of Inositol Phosphate on Hydroxyapatite Powder with High Specific Surface Area. MATERIALS 2022; 15:ma15062176. [PMID: 35329627 PMCID: PMC8950381 DOI: 10.3390/ma15062176] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/10/2022] [Accepted: 03/12/2022] [Indexed: 02/04/2023]
Abstract
Chelate-setting calcium-phosphate cements (CPCs) have been developed using inositol phosphate (IP6) as a chelating agent. However, the compressive strength of the CPC fabricated from a commercially available hydroxyapatite (HAp) powder was approximately 10 MPa. In this study, we miniaturized HAp particles as a starting powder to improve the compressive strength of chelate-setting CPCs and examined the adsorption properties of IP6 onto HAp powders. An HAp powder with a specific surface area (SSA) higher than 200 m2/g (HApHS) was obtained by ultrasonic irradiation for 1 min in a wet synthesis process, greatly improving the SSA (214 m2/g) of the commercial powder without ultrasonic irradiation. The HApHS powder was found to be a B-type carbonate-containing HAp in which the phosphate groups in apatite were replaced by carbonate groups. Owing to the high SSA, the HApHS powder also showed high IP6 adsorption capacity. The adsorption phenomena of IP6 to our HApHS and commercially available Hap powders were found to follow the Freundlich and Langmuir models, respectively. We found that IP6 adsorbs on the HApHS powder by both physisorption and chemisorption. The fine HapHS powder with a high SSA is a novel raw powder material, expected to improve the compressive strength of chelate-setting CPCs.
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Affiliation(s)
- Hirogo Minamisawa
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan;
| | - Yoshiyuki Kojima
- Department of Materials and Applied Chemistry, Faculty of Science and Engineering, Nihon University, 1-8, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan;
| | - Mamoru Aizawa
- Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
- Correspondence:
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7
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Seonwoo H, Choung HW, Park S, Choi KS, Jang KJ, Kim J, Lim KT, Kim Y, Garg P, Pandey S, Lee J, Park JC, Choung YH, Choung PH, Kim SY, Chung JH. Reduced graphene oxide-incorporated calcium phosphate cements with pulsed electromagnetic fields for bone regeneration. RSC Adv 2022; 12:5557-5570. [PMID: 35425568 PMCID: PMC8981265 DOI: 10.1039/d1ra05717k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 01/25/2022] [Indexed: 12/13/2022] Open
Abstract
Natural calcium phosphate cements (CPCs) derived from sintered animal bone have been investigated to treat bone defects, but their low mechanical strength remains a critical limitation. Graphene improves the mechanical properties of scaffolds and promotes higher osteoinduction. To this end, reduced graphene oxide-incorporated natural calcium phosphate cements (RGO-CPCs) are fabricated for reinforcement of CPCs' characteristics. Pulsed electromagnetic fields (PEMFs) were additionally applied to RGO-CPCs to promote osteogenic differentiation ability. The fabricated RGO-CPCs show distinct surface properties and chemical properties according to the RGO concentration. The RGO-CPCs’ mechanical properties are significantly increased compared to CPCs owing to chemical bonding between RGO and CPCs. In in vitro studies using a mouse osteoblast cell line and rat-derived adipose stem cells, RGO-CPCs are not severely toxic to either cell type. Cell migration study, western blotting, immunocytochemistry, and alizarin red staining assay reveal that osteoinductivity as well as osteoconductivity of RGO-CPCs was highly increased. In in vivo study, RGO-CPCs not only promoted bone ingrowth but also enhanced osteogenic differentiation of stem cells. Application of PEMFs enhanced the osteogenic differentiation of stem cells. RGO-CPCs with PEMFs can overcome the flaws of previously developed natural CPCs and are anticipated to open the gate to clinical application for bone repair and regeneration. Natural calcium phosphate cements (CPCs) derived from sintered animal bone have been investigated to treat bone defects, but their low mechanical strength remains a critical limitation.![]()
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Affiliation(s)
- Hoon Seonwoo
- Department of Covergent Biosystems Engineering, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Han-Wool Choung
- Department of Oral Histology-Developmental Biology, Dental Research Institute and School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
| | - Sangbae Park
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyoung Soon Choi
- Advanced Nano-Surface Research Group, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Kyoung-Je Jang
- Division of Agro-System Engineering, College of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
- Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jangho Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Ki-Taek Lim
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Yeonju Kim
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Pankaj Garg
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Shambhavi Pandey
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Juo Lee
- Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University, Suncheon, 57922, Republic of Korea
- Department of Animal Science & Technology, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Joo-Cheol Park
- Department of Oral Histology-Developmental Biology, Dental Research Institute and School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
| | - Yun-Hoon Choung
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Pill-Hoon Choung
- Department of Oral and Maxillofacial Surgery and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
| | - Soo Young Kim
- School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jong Hoon Chung
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Republic of Korea
- BK21 Global Smart Farm Educational Research Center, Seoul National University, Seoul 08826, Korea
- Convergence Major in Global Smart Farm, Seoul National University, Seoul 08826, Korea
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8
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Landeck JT, Walsh WR, Oliver RA, Wang T, Gordon MR, Ahn E, White CD. Temporal response of an injectable calcium phosphate material in a critical size defect. J Orthop Surg Res 2021; 16:496. [PMID: 34389027 PMCID: PMC8362253 DOI: 10.1186/s13018-021-02651-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/05/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Calcium phosphate-based bone graft substitutes are used to facilitate healing in bony defects caused by trauma or created during surgery. Here, we present an injectable calcium phosphate-based bone void filler that has been purposefully formulated with hyaluronic acid to offer a longer working time for ease of injection into bony defects that are difficult to access during minimally invasive surgery. METHODS The bone substitute material deliverability and physical properties were characterized, and in vivo response was evaluated in a critical size distal femur defect in skeletally mature rabbits to 26 weeks. The interface with the host bone, implant degradation, and resorption were assessed with time. RESULTS The calcium phosphate bone substitute material could be injected as a paste within the working time window of 7-18 min, and then self-cured at body temperature within 10 min. The material reached a maximum ultimate compressive strength of 8.20 ± 0.95 MPa, similar to trabecular bone. The material was found to be biocompatible and osteoconductive in vivo out to 26 weeks, with new bone formation and normal bone architecture observed at 6 weeks, as demonstrated by histological evaluation, microcomputed tomography, and radiographic evaluation. CONCLUSIONS These findings show that the material properties and performance are well suited for minimally invasive percutaneous delivery applications.
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Affiliation(s)
- Jacob T Landeck
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, 01605, USA
- Graduate School of Biomedical Sciences, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - William R Walsh
- Surgical & Orthopaedic Research Laboratories (SORL), Prince of Wales Clinical School, Level 1 Clinical Sciences Building, Prince of Wales Hospital, UNSW Sydney, Sydney, Australia.
| | - Rema A Oliver
- Surgical & Orthopaedic Research Laboratories (SORL), Prince of Wales Clinical School, Level 1 Clinical Sciences Building, Prince of Wales Hospital, UNSW Sydney, Sydney, Australia
| | - Tian Wang
- Surgical & Orthopaedic Research Laboratories (SORL), Prince of Wales Clinical School, Level 1 Clinical Sciences Building, Prince of Wales Hospital, UNSW Sydney, Sydney, Australia
| | | | | | - Colin D White
- Vertex Pharmaceuticals, 50 Northern Ave, Boston, MA, 02210, USA
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Kim JE, Park S, Lee WS, Han J, Lim JW, Jeong S, Lee MC, Yang WY, Seonwoo H, Kim BM, Choung YH, Jang KJ, Chung JH. Enhanced Osteogenesis of Dental Pulp Stem Cells In Vitro Induced by Chitosan-PEG-Incorporated Calcium Phosphate Cement. Polymers (Basel) 2021; 13:polym13142252. [PMID: 34301012 PMCID: PMC8309336 DOI: 10.3390/polym13142252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/05/2021] [Accepted: 07/05/2021] [Indexed: 11/17/2022] Open
Abstract
The use of bone graft materials is required for the treatment of bone defects damaged beyond the critical defect; therefore, injectable calcium phosphate cement (CPC) is actively used after surgery. The application of various polymers to improve injectability, mechanical strength, and biological function of injection-type CPC is encouraged. We previously developed a chitosan–PEG conjugate (CS/PEG) by a sulfur (VI) fluoride exchange reaction, and the resulting chitosan derivative showed high solubility at a neutral pH. We have demonstrated the CPC incorporated with a poly (ethylene glycol) (PEG)-grafted chitosan (CS/PEG) and developed CS/PEG CPC. The characterization of CS/PEG CPC was conducted using Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The initial properties of CS/PEG CPCs, such as the pH, porosity, mechanical strength, zeta potential, and in vitro biocompatibility using the WST-1 assay, were also investigated. Moreover, osteocompatibility of CS/PEG CPCs was carried out via Alizarin Red S staining, immunocytochemistry, and Western blot analysis. CS/PEG CPC has enhanced mechanical strength compared to CPC, and the cohesion test also demonstrated in vivo stability. Furthermore, we determined whether CS/PEG CPC is a suitable candidate for promoting the osteogenic ability of Dental Pulp Stem Cells (DPSC). The elution of CS/PEG CPC entraps more calcium ion than CPC, as confirmed through the zeta potential test. Accordingly, the ion trapping effect of CS/PEG is considered to have played a role in promoting osteogenic differentiation of DPSCs. The results strongly suggested that CS/PEG could be used as suitable additives for improving osteogenic induction of bone substitute materials.
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Affiliation(s)
- Jae Eun Kim
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea; (J.E.K.); (J.H.)
| | - Sangbae Park
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea; (S.P.); (J.W.L.); (S.J.)
| | - Woong-Sup Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea; (W.-S.L.); (B.M.K.)
| | - Jinsub Han
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea; (J.E.K.); (J.H.)
- BK21 Global Smart Farm Educational Research Center, Seoul National University, Seoul 08826, Korea
| | - Jae Woon Lim
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea; (S.P.); (J.W.L.); (S.J.)
| | - Seung Jeong
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea; (S.P.); (J.W.L.); (S.J.)
| | - Myung Chul Lee
- Department of Brigham and Women’s Hospital, Division of Engineering in Medicine, Harvard Medical School, Cambridge, MA 02139, USA;
| | - Woo-Young Yang
- Dental Research Institute, Seoul National University, Seoul 08826, Korea;
| | - Hoon Seonwoo
- Department of Industrial Machinery Engineering, College of Life Sciences and Natural Resources, Sunchon National University, Suncheon 57922, Korea;
- Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University, Suncheon 57922, Korea
| | - B. Moon Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea; (W.-S.L.); (B.M.K.)
| | - Yun-Hoon Choung
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea;
| | - Kyoung-Je Jang
- Division of Agro-System Engineering, College of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea
- Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Korea
- Correspondence: (K.-J.J.); (J.H.C.); Tel.: +82-55-772-1898 (K.-J.J.); +82-2-880-4601 (J.H.C.)
| | - Jong Hoon Chung
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea; (J.E.K.); (J.H.)
- BK21 Global Smart Farm Educational Research Center, Seoul National University, Seoul 08826, Korea
- Global Smart Farm Convergence Major, Seoul National University, Seoul 08826, Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Correspondence: (K.-J.J.); (J.H.C.); Tel.: +82-55-772-1898 (K.-J.J.); +82-2-880-4601 (J.H.C.)
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10
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Formulation of inherently antimicrobial magnesium oxychloride cement and the effect of supplementation with silver phosphate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112158. [PMID: 34082963 DOI: 10.1016/j.msec.2021.112158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 04/19/2021] [Accepted: 04/26/2021] [Indexed: 11/22/2022]
Abstract
The growing threat of bacterial resistance to antibiotics is driving an increasing need for new antimicrobial strategies. This work demonstrates the potential of magnesium oxychloride cements (MOC) to be used as inorganic antimicrobial biomaterials for bone augmentation. An injectable formulation was identified at a powder to liquid ratio of 1.4 g mL-1, with an initial setting time below 30 mins and compressive strength of 35 ± 9 MPa. Supplementation with Ag3PO4 to enhance the antimicrobial efficacy of MOC was explored, and shown via real time X-ray diffraction to retard the formation of hydrated oxychloride phases by up to 30%. The antimicrobial efficacy of MOC was demonstrated in vitro against Staphylococcus aureus and Pseudomonas aeruginosa, forming zones of inhibition and significantly reducing viability in broth culture. Enhanced efficacy was seen for silver doped formulations, with complete eradication of detectable viable colonies within 3 h, whilst retaining the cytocompatibility of MOC. Investigating the antimicrobial mode of action revealed that Mg and Ag release and elevated pH contributed to MOC efficacy. Sustained silver release was demonstrated over 14 days, suggesting the Ag3PO4 modified formulation offers two mechanisms of infection treatment, combining the inherent antimicrobial properties of MOC with controlled release of inorganic antimicrobials.
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11
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Nanostructured Strontium-Doped Calcium Phosphate Cements: A Multifactorial Design. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11052075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Calcium phosphate cements (CPCs) have been extensively studied in last decades as nanostructured biomaterials for the regeneration of bone defects, both for dental and orthopedic applications. However, the precise control of their handling properties (setting time, viscosity, and injectability) still represents a remarkable challenge because a complicated adjustment of multiple correlated processing parameters is requested, including powder particle size and the chemical composition of solid and liquid components. This study proposes, for the first time, a multifactorial investigation about the effects of powder and liquid variation on the final performance of Sr-doped apatitic CPCs, based on the Design of Experiment approach. In addition, the effects of two mixing techniques, hand spatula (low-energy) and planetary shear mixing (high-energy), on viscosity and extrusion force were compared. This work aims to shed light on the various steps involved in the processing of CPCs, thus enabling a more precise and tailored design of the device, based on the clinical need.
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12
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Zhao J, Kirillova A, Kelly CN, Xu H, Koshut WJ, Yang F, Gall K, Wiley BJ. High-Strength Hydrogel Attachment through Nanofibrous Reinforcement. Adv Healthc Mater 2021; 10:e2001119. [PMID: 32940005 DOI: 10.1002/adhm.202001119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/05/2020] [Indexed: 01/08/2023]
Abstract
The repair of a cartilage lesion with a hydrogel requires a method for long-term fixation of the hydrogel in the defect site. Attachment of a hydrogel to a base that allows for integration with bone can enable long-term fixation of the hydrogel, but current methods of forming bonds to hydrogels have less than a tenth of the shear strength of the osteochondral junction. This communication describes a new method, nanofiber-enhanced sticking (NEST), for bonding a hydrogel to a base with an adhesive shear strength three times larger than the state-of-the-art. An example of NEST is described in which a nanofibrous bacterial cellulose sheet is bonded to a porous base with a hydroxyapatite-forming cement followed by infiltration of the nanofibrous sheet with hydrogel-forming polymeric materials. This approach creates a mineralized nanofiber bond that mimics the structure of the osteochondral junction, in which collagen nanofibers extend from cartilage into a mineralized region that anchors cartilage to bone.
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Affiliation(s)
- Jiacheng Zhao
- Department of Chemistry Duke University 124 Science Drive, Box 90354 Durham NC 27708 USA
| | - Alina Kirillova
- Department of Mechanical Engineering and Materials Science Duke University 144 Hudson Hall, Box 90300 Durham NC 27708 USA
| | - Cambre N. Kelly
- Department of Mechanical Engineering and Materials Science Duke University 144 Hudson Hall, Box 90300 Durham NC 27708 USA
| | - Heng Xu
- Department of Chemistry Duke University 124 Science Drive, Box 90354 Durham NC 27708 USA
| | - William J. Koshut
- Department of Mechanical Engineering and Materials Science Duke University 144 Hudson Hall, Box 90300 Durham NC 27708 USA
| | - Feichen Yang
- Department of Chemistry Duke University 124 Science Drive, Box 90354 Durham NC 27708 USA
| | - Ken Gall
- Department of Mechanical Engineering and Materials Science Duke University 144 Hudson Hall, Box 90300 Durham NC 27708 USA
| | - Benjamin J. Wiley
- Department of Chemistry Duke University 124 Science Drive, Box 90354 Durham NC 27708 USA
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13
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Shi Y, He R, Deng X, Shao Z, Deganello D, Yan C, Xia Z, Ys, Rh, Xd, Rh, Xd, Zs, Dd, Dd, Cy, Zx, Cy, Zx, Cy, Zx, Ys, Zx, Zx. Three-dimensional biofabrication of an aragonite-enriched self-hardening bone graft substitute and assessment of its osteogenicity in vitro and in vivo. BIOMATERIALS TRANSLATIONAL 2020; 1:69-81. [PMID: 35837657 PMCID: PMC9255821 DOI: 10.3877/cma.j.issn.2096-112x.2020.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 01/17/2023]
Abstract
A self-hardening three-dimensional (3D)-porous composite bone graft consisting of 65 wt% hydroxyapatite (HA) and 35 wt% aragonite was fabricated using a 3D-Bioplotter®. New tetracalcium phosphate and dicalcium phosphate anhydrous/aragonite/gelatine paste formulae were developed to overcome the phase separation of the liquid and solid components. The mechanical properties, porosity, height and width stability of the end products were optimised through a systematic analysis of the fabrication processing parameters including printing pressure, printing speed and distance between strands. The resulting 3D-printed bone graft was confirmed to be a mixture of HA and aragonite by X-ray diffraction, Fourier transform infrared spectroscopy and energy dispersive X-ray spectroscopy. The compression strength of HA/aragonite was between 0.56 and 2.49 MPa. Cytotoxicity was assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay in vitro. The osteogenicity of HA/aragonite was evaluated in vitro by alkaline phosphatase assay using human umbilical cord matrix mesenchymal stem cells, and in vivo by juxtapositional implantation between the tibia and the anterior tibialis muscle in rats. The results showed that the scaffold was not toxic and supported osteogenic differentiation in vitro. HA/aragonite stimulated new bone formation that bridged host bone and intramuscular implants in vivo. We conclude that HA/aragonite is a biodegradable and conductive bone formation biomaterial that stimulates bone regeneration. Since this material is formed near 37°C, it will have great potential for incorporating bioactive molecules to suit personalised application; however, further study of its biodegradation and osteogenic capacity is warranted. The study was approved by the Animal Ethical Committee at Tongji Medical School, Huazhong University of Science and Technology (IACUC No. 738) on October 1, 2017.
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Affiliation(s)
- Yunsong Shi
- Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Centre for Nanohealth, Swansea University Medical School, Swansea, UK
| | - Ruijun He
- Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Xiangyu Deng
- Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Zengwu Shao
- Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Davide Deganello
- Centre for Nanohealth, Faculty of Science and Engineering, Swansea University, Swansea, UK
| | - Chunze Yan
- State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Corresponding authors: Chunze Yan, ; Zhidao Xia,
| | - Zhidao Xia
- Centre for Nanohealth, Swansea University Medical School, Swansea, UK,Corresponding authors: Chunze Yan, ; Zhidao Xia,
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14
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Şahin E, Kalyon DM. Preshearing is an in situ setting modification method for inorganic bone cements. MEDICAL DEVICES & SENSORS 2020; 3. [DOI: https:/doi.org/10.1002/mds3.10105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/26/2020] [Indexed: 07/21/2023]
Affiliation(s)
- Erdem Şahin
- Department of Metallurgical and Materials Engineering Muğla Sıtkı Koçman University Muğla Turkey
| | - Dilhan M. Kalyon
- Department of Biomedical Engineering, Chemistry and Biological Sciences Stevens Institute of Technology Hoboken NJ USA
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15
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Wu X, Dai H, Yu S, Zhao Y, Long Y, Li W, Tu J. Magnesium Calcium Phosphate Cement Incorporating Citrate for Vascularized Bone Regeneration. ACS Biomater Sci Eng 2020; 6:6299-6308. [PMID: 33449642 DOI: 10.1021/acsbiomaterials.0c00929] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of bioactive bone cement is still a challenge for vascularized bone regeneration. Citrate participated in multiple biological processes, such as energy metabolism, osteogenesis, and angiogenesis. However, it is difficult to obtain a thorough and comprehensive understanding on osteogenic effects of exogenous citrate from different experimental conditions and treatment methods. In this study, by using a magnesium calcium phosphate cement (MCPC) matrix, we investigated the dual effect of exogenous citrate on osteogenesis and angiogenesis. Our studies show that citrate elevates the osteogenic function of osteoblasts under low doses and the angiogenic function of vascular endothelial cells under a broader dose range. These findings furnish a new strategy for regulating angiogenesis and osteogenic differentiation by administration of citrate in MCPC, driving the development of bioactive bone repair materials.
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Affiliation(s)
- Xiaopei Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China.,Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, China
| | - Honglian Dai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China.,Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, China
| | - Suchun Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China
| | - Yanan Zhao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China
| | - Yanpiao Long
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China
| | - Wenqin Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China
| | - Jing Tu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China
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16
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Schröter L, Kaiser F, Stein S, Gbureck U, Ignatius A. Biological and mechanical performance and degradation characteristics of calcium phosphate cements in large animals and humans. Acta Biomater 2020; 117:1-20. [PMID: 32979583 DOI: 10.1016/j.actbio.2020.09.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/21/2020] [Accepted: 09/15/2020] [Indexed: 12/11/2022]
Abstract
Calcium phosphate cements (CPCs) have been used to treat bone defects and support bone regeneration because of their good biocompatibility and osteointegrative behavior. Since their introduction in the 1980s, remarkable clinical success has been achieved with these biomaterials, because they offer the unique feature of being moldable and even injectable into implant sites, where they harden through a low-temperature setting reaction. However, despite decades of research efforts, two major limitations concerning their biological and mechanical performance hamper a broader clinical use. Firstly, achieving a degradation rate that is well adjusted to the dynamics of bone formation remains a challenging issue. While apatite-forming CPCs frequently remain for years at the implant site without major signs of degradation, brushite-forming CPCs are considered to degrade to a greater extent. However, the latter tend to convert into lower soluble phases under physiological conditions, which makes their degradation behavior rather unpredictable. Secondly, CPCs exhibit insufficient mechanical properties for load bearing applications because of their inherent brittleness. This review places an emphasis on these limitations and provides an overview of studies that have investigated the biological and biomechanical performance as well as the degradation characteristics of different CPCs after implantation into trabecular bone. We reviewed studies performed in large animals, because they mimic human bone physiology more closely in terms of bone metabolism and mechanical loading conditions compared with small laboratory animals. We compared the results of these studies with clinical trials that have dealt with the degradation behavior of CPCs after vertebroplasty and kyphoplasty.
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Affiliation(s)
- Lena Schröter
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstrasse 14, D-89081 Ulm, Germany
| | - Friederike Kaiser
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany
| | - Svenja Stein
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstrasse 14, D-89081 Ulm, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany.
| | - Anita Ignatius
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstrasse 14, D-89081 Ulm, Germany
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17
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Gelli R, Di Pompo G, Graziani G, Avnet S, Baldini N, Baglioni P, Ridi F. Unravelling the Effect of Citrate on the Features and Biocompatibility of Magnesium Phosphate-Based Bone Cements. ACS Biomater Sci Eng 2020; 6:5538-5548. [PMID: 33320576 PMCID: PMC8011797 DOI: 10.1021/acsbiomaterials.0c00983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
In
the framework of new materials for orthopedic applications,
Magnesium Phosphate-based Cements (MPCs) are currently the focus of
active research in biomedicine, given their promising features; in
this field, the loading of MPCs with active molecules to be released
in the proximity of newly forming bone could represent an innovative
approach to enhance the in vivo performances of the biomaterial. In
this work, we describe the preparation and characterization of MPCs
containing citrate, an ion naturally present in bone which presents
beneficial effects when released in the proximity of newly forming
bone tissue. The cements were characterized in terms of handling properties,
setting time, mechanical properties, crystallinity, and microstructure,
so as to unravel the effect of citrate concentration on the features
of the material. Upon incubation in aqueous media, we demonstrated
that citrate could be successfully released from the cements, while
contributing to the alkalinization of the surroundings. The cytotoxicity
of the materials toward human fibroblasts was also tested, revealing
the importance of a fine modulation of released citrate to guarantee
the biocompatibility of the material.
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Affiliation(s)
- Rita Gelli
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Gemma Di Pompo
- BST Biomedical Science and Technologies Lab, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Gabriela Graziani
- Laboratory of Nanobiotechnology (NaBi), IRCSS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy
| | - Sofia Avnet
- BST Biomedical Science and Technologies Lab, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Nicola Baldini
- BST Biomedical Science and Technologies Lab, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy.,Department of Biomedical and Neuromotor Sciences, University of Bologna, 40127 Bologna, Italy
| | - Piero Baglioni
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Francesca Ridi
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
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18
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de Lacerda Schickert S, Pinto JC, Jansen J, Leeuwenburgh SCG, van den Beucken JJJP. Tough and injectable fiber reinforced calcium phosphate cement as an alternative to polymethylmethacrylate cement for vertebral augmentation: a biomechanical study. Biomater Sci 2020; 8:4239-4250. [PMID: 32579633 DOI: 10.1039/d0bm00413h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Vertebral compression fractures (VCFs) are a very common problem among the elderly, which ultimately result in severe pain and a drastically reduced quality of life. An effective treatment for VCFs is the minimally invasive augmentation of the damaged vertebrae through vertebroplasty and/or kyphoplasty. These surgical procedures treat the affected vertebrae by injection of poly(methyl methacrylate) cement (PMMA) into the vertebral body. However, clinical use of PMMA cement is associated with major drawbacks. Bioceramic cements such as injectable calcium phosphate cements (CPC) exhibit a superior osteocompatibility over PMMA cements, but are too brittle for load-bearing applications. Here, we evaluated the handling and mechanical properties of a recently developed CPC formulation containing both poly(vinyl alcohol) (PVA) fibers and carboxymethyl cellulose (CMC) as an alternative to PMMA cement for vertebro- and kyphoplasty. Our results demonstrate that the addition of CMC rendered fiber-reinforced CPC injectable without negatively affecting its mechanical properties. Further, an ex vivo mechanical analysis clearly showed that extravasation of PVA fiber-reinforced CPC with CMC into trabecular bone was limited as compared to PMMA. Finally, we observed that the ex vivo biomechanical performance of vertebrae treated with CMC and PVA fibers was similar to PMMA-treated vertebrae. The obtained data suggests that PVA fiber-reinforced CPCs with CMC possesses adequate handling, mechanical and structural characteristics for vertebro- and kyphoplasty procedures. These data pave the way for future preclinical studies on the feasibility of treating vertebral compression fractures using PVA fiber-reinforced CPC with CMC.
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Affiliation(s)
- Sónia de Lacerda Schickert
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences; Department of Dentistry - Regenerative Biomaterials, Philips van Leydenlaan 25, Nijmegen, The Netherlands.
| | - João Castro Pinto
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences; Department of Dentistry - Regenerative Biomaterials, Philips van Leydenlaan 25, Nijmegen, The Netherlands.
| | - John Jansen
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences; Department of Dentistry - Regenerative Biomaterials, Philips van Leydenlaan 25, Nijmegen, The Netherlands.
| | - Sander C G Leeuwenburgh
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences; Department of Dentistry - Regenerative Biomaterials, Philips van Leydenlaan 25, Nijmegen, The Netherlands.
| | - Jeroen J J P van den Beucken
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences; Department of Dentistry - Regenerative Biomaterials, Philips van Leydenlaan 25, Nijmegen, The Netherlands.
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19
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Ho YS. Letter to the Editor Regarding "The Top 100 Most-Cited Articles on Kyphoplasty and Vertebroplasty". World Neurosurg 2020; 139:676-687. [PMID: 32689679 DOI: 10.1016/j.wneu.2020.04.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Yuh-Shan Ho
- Trend Research Centre, Asia University, Wufeng, Taichung, Taiwan.
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20
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Robinson T, Eisenstein N, Cox S, Moakes R, Thompson A, Ahmed Z, Hughes E, Hill L, Stapley S, Grover L. Local injection of a hexametaphosphate formulation reduces heterotopic ossification in vivo. Mater Today Bio 2020; 7:100059. [PMID: 32613185 PMCID: PMC7322360 DOI: 10.1016/j.mtbio.2020.100059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/22/2020] [Accepted: 05/24/2020] [Indexed: 12/17/2022] Open
Abstract
Heterotopic ossification (HO), the pathological formation of ectopic bone, is a debilitating condition which can cause chronic pain, limit joint movement, and prevent prosthetic limb fitting. The prevalence of this condition has risen in the military population, due to increased survivorship following blast injuries. Current prophylaxes, which aim to target the complex upstream biological pathways, are inconsistently effective and have a range of side-effects that make them unsuitable for combat-injured personnel. As such, many patients must undergo further surgery to remove the formed ectopic bone. In this study, a non-toxic, U.S. Food and Drug Administration (FDA) -approved calcium chelator, hexametaphosphate (HMP), is explored as a novel treatment paradigm for this condition, which targets the chemical, rather that biological, bone formation pathways. This approach allows not only prevention of pathological bone formation but also uniquely facilitates reversal, which current drugs cannot achieve. Targeted, minimally invasive delivery is achieved by loading HMP into an injectable colloidal alginate. These formulations significantly reduce the length of the ectopic bone formed in a rodent model of HO, with no effect on the adjacent skeletal bone. This study demonstrates the potential of localized dissolution as a new treatment and an alternative to surgery for pathological ossification and calcification conditions.
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Affiliation(s)
- T.E. Robinson
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
- Royal Centre for Defence Medicine, Birmingham Research Park, Vincent Drive, Edgbaston, B15 2SQ, UK
| | - N.M. Eisenstein
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
- Royal Centre for Defence Medicine, Birmingham Research Park, Vincent Drive, Edgbaston, B15 2SQ, UK
| | - S.C. Cox
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
| | - R.J.A. Moakes
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
| | - A.M. Thompson
- Neuroscience and Opthalmology, Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, B15 2TT, UK
| | - Z. Ahmed
- Neuroscience and Opthalmology, Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, B15 2TT, UK
| | - E.A.B. Hughes
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
- NIHR Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital, Edgbaston, B15 2TH, UK
| | - L.J. Hill
- School of Biomedical Sciences, Institute of Clinical Sciences, University of Birmingham, Edgbaston, B15 2TT, UK
| | - S.A. Stapley
- Royal Centre for Defence Medicine, Birmingham Research Park, Vincent Drive, Edgbaston, B15 2SQ, UK
| | - L.M. Grover
- Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT, UK
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21
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Yousefi AM. A review of calcium phosphate cements and acrylic bone cements as injectable materials for bone repair and implant fixation. J Appl Biomater Funct Mater 2020; 17:2280800019872594. [PMID: 31718388 DOI: 10.1177/2280800019872594] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Treatment of bone defects caused by trauma or disease is a major burden on human healthcare systems. Although autologous bone grafts are considered as the gold standard, they are limited in availability and are associated with post-operative complications. Minimally invasive alternatives using injectable bone cements are currently used in certain clinical procedures, such as vertebroplasty and balloon kyphoplasty. Nevertheless, given the high incidence of fractures and pathologies that result in bone voids, there is an unmet need for injectable materials with desired properties for minimally invasive procedures. This paper provides an overview of the most common injectable bone cement materials for clinical use. The emphasis has been placed on calcium phosphate cements and acrylic bone cements, while enabling the readers to compare the opportunities and challenges for these two classes of bone cements. This paper also briefly reviews antibiotic-loaded bone cements used in bone repair and implant fixation, including their efficacy and cost for healthcare systems. A summary of the current challenges and recommendations for future directions has been brought in the concluding section of this paper.
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Affiliation(s)
- Azizeh-Mitra Yousefi
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA
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22
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Robinson TE, Hughes EAB, Bose A, Cornish EA, Teo JY, Eisenstein NM, Grover LM, Cox SC. Filling the Gap: A Correlation between Objective and Subjective Measures of Injectability. Adv Healthc Mater 2020; 9:e1901521. [PMID: 31977153 DOI: 10.1002/adhm.201901521] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/13/2020] [Indexed: 12/20/2022]
Abstract
Various injectable biomaterials are developed for the minimally invasive delivery of therapeutics. Typically, a mechanical tester is used to ascertain the force required to inject these biomaterials through a given syringe-needle system. However, currently there is no method to correlate the force measured in the laboratory to the perceived effort required to perform that injection by the end user. In this article, the injection force (F) for a variety of biomaterials, displaying a range of rheological properties, is compared with the effort scores from a 50 person panel study. The maximum injection force measured at crosshead speed 1 mm s-1 is a good proxy for injection effort, with an R2 of 0.89. This correlation leads to the following conclusions: participants can easily inject 5 mL of substance for F < 12 N; considerable effort is required to inject 5 mL for 12 N < F < 38 N; great effort is required and <5 mL can be injected for 38 N < F < 64 N; and materials are entirely non-injectable for F > 64 N. These values may be used by developers of injectable biomaterials to make decisions about formulations and needle sizes early in the translational process.
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Affiliation(s)
- Thomas E. Robinson
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Erik A. B. Hughes
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Aniruddha Bose
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | | | - Jun Y. Teo
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Neil M. Eisenstein
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Liam M. Grover
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
| | - Sophie C. Cox
- School of Chemical EngineeringUniversity of Birmingham Edgbaston B15 2TT UK
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23
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Salehi G, Behnamghader A, Hesaraki S, Mozafari M. Synergistic effects of carbohydrate polymers on the performance of hybrid injectable bone pastes. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.07.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Weichhold J, Gbureck U, Goetz-Neunhoeffer F, Hurle K. Setting Mechanism of a CDHA Forming α-TCP Cement Modified with Sodium Phytate for Improved Injectability. MATERIALS 2019; 12:ma12132098. [PMID: 31261865 PMCID: PMC6651550 DOI: 10.3390/ma12132098] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 06/21/2019] [Accepted: 06/27/2019] [Indexed: 02/02/2023]
Abstract
A calcium deficient hydroxyapatite (CDHA) forming cement with a bimodal grain size distribution, composed of α-TCP and fine grained CDHA at a weight ratio of 9:1, was modified by the addition of sodium phytate (IP6) in variable amounts ranging from 0.25 to 2 wt.%, related to the powder content. The injectability of the cement paste was drastically increased by the IP6 addition, independent of the amount of added IP6. Additionally, the cement paste viscosity during the first minutes decreased. These effects could be clearly related to a slightly more negative zeta potential. Furthermore, IP6 was shown to strongly retard the setting reaction, as can be seen both in the calorimetry and X-ray diffraction measurements. In addition, octacalcium phosphate (OCP) was identified as a further setting product. All measurements were performed at 23 °C and 37 °C to assess the effect of temperature on the setting reaction for both clinical handling by the surgeon and the final hardening in the bone defect.
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Affiliation(s)
- Jan Weichhold
- Department for Functional Materials in Medicine and Dentistry, University of Wuerzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Wuerzburg, Pleicherwall 2, 97070 Würzburg, Germany.
| | - Friedlinde Goetz-Neunhoeffer
- GeoZentrum Nordbayern-Mineralogy, Friedrich-Alexander-University of Erlangen-Nuernberg, Schlossgarten 5a, 91054 Erlangen, Germany
| | - Katrin Hurle
- GeoZentrum Nordbayern-Mineralogy, Friedrich-Alexander-University of Erlangen-Nuernberg, Schlossgarten 5a, 91054 Erlangen, Germany.
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Wang S, Xu C, Yu S, Wu X, Jie Z, Dai H. Citric acid enhances the physical properties, cytocompatibility and osteogenesis of magnesium calcium phosphate cement. J Mech Behav Biomed Mater 2019; 94:42-50. [DOI: 10.1016/j.jmbbm.2019.02.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/22/2019] [Accepted: 02/25/2019] [Indexed: 10/27/2022]
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Sopcak T, Medvecky L, Giretova M, Stulajterova R, Molcanova Z, Podobova M, Girman V. Physical, mechanical and in vitro evaluation of a novel cement based on akermantite and dicalcium phosphate dihydrate phase. ACTA ACUST UNITED AC 2019; 14:045011. [PMID: 31134897 DOI: 10.1088/1748-605x/ab216d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Magnesium containing calcium silicates have recently shown that they are promising materials for various biomedical application with potential use in the form of bulk ceramic, composite scaffold or coatings on metallic substrates. A novel akermanite (AK; Ca2MgSi2O7)/dicalcium phosphate dihydrate (DCPD, CaHPO4. H2O) cement mixture was tested in this work in order to produce an alternative AK/DCPD biocement for orthopedic applications. For comparison, we have prepared two cements mixed with 2.5 wt% NaH2PO4 solution (labeled as NaH2PO4 cement) and with the solution composed of organic 2.5 wt% citric acid a 2.5 wt% trisodium citrate (citrate cement) respectively. The results demonstrated only a partial dissolution of AK, regardless of the type of liquid used. On the other hand, the DCPD was completely hydrolyzed much faster in the citrate cement. The final hydration product was an amorhous quarternary phase of CaO-MgO-SiO2-P2O5 composition with the remaining unreacted akermanite embeded in the cement matrix. The highest early compressive strength was observed in the citrate cement (33 MPa), but much lower value was measured in NaH2PO4 cement (7 MPa) after 1 d setting. Different cell responses have been observed when the cells were cultured on the surfaces of cement substrates. While the NaH2PO4 cement demonstrated high proliferation activity of osteoblast, the citrate cement showed strong cytotoxic cell response, probably as a result of higher concentration of citrates on the cement surface, which can negatively affect the attachment and proliferation of osteoblastic cells.
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Affiliation(s)
- T Sopcak
- Institute of Materials Research of SAS, Watsonova 47, 04001 Kosice, Slovakia
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Yu S, Liu L, Xu C, Dai H. Magnesium phosphate based cement with improved setting, strength and cytocompatibility properties by adding Ca(H2PO4)2·H2O and citric acid. J Mech Behav Biomed Mater 2019; 91:229-236. [DOI: 10.1016/j.jmbbm.2018.12.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 10/27/2022]
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Xie X, Pang L, Yao A, Ye S, Wang D. Nanocement Produced from Borosilicate Bioactive Glass Nanoparticles Composited with Alginate. Aust J Chem 2019. [DOI: 10.1071/ch18410] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel injectable bone cement was prepared using sol–gel derived borosilicate bioactive glass nanoparticles as a solid phase and sodium alginate solution as a liquid phase. The gelation reaction of the alginate was modulated by Ca2+ ions released from the borosilicate glass phase, which in turn greatly depended on the boron content of the borosilicate glass phase. Such a gelation reaction not only significantly enhanced the anti-washout property of the bone cements, but also allowed control of the setting, handling properties, and compressive strength of the composite bone cements. Consequently, bone cements with controllable performances can be developed by simply adjusting the B2O3/SiO2 ratio of the borosilicate glass phase. Borosilicate bioactive glass with 20–30 mol-% borate contents exhibit a short setting time, good compressive strength, injectability, and anti-washout properties. With controllable performances and excellent bioactivity, the borosilicate bioactive glass/sodium alginate (BSBG/SA) composite bone cements are highly attractive for bone filling and regeneration applications.
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Bakopoulou A, Hoang P, Fathi A, Foley M, Dunstan C, Dalci O, Papadopoulou AK, Darendeliler MA. A comparative histomorphological and micro computed tomography study of the primary stability and the osseointegration of The Sydney Mini Screw; a qualitative pilot animal study in New Zealand rabbits. Eur J Orthod 2018; 41:360-369. [DOI: 10.1093/ejo/cjy059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
SummaryObjectiveThe aim of this study was to assess the potential of improving orthodontic miniscrews’ (MSs) primary stability in vivo by evaluating the dispersion capacity of an injectable bone graft substitute (iBGS) through a newly designed hollow MS [The Sydney Mini Screw (SMS)] and its integration with the cortical and trabecular bone by using the femur and tibia in a New Zealand rabbit animal model.MethodsIn total, 24 MSs were randomly placed in each proximal tibia and femur of 6 New Zealand rabbits with an open surgery process. Aarhus MSs were used as controls and the effect of injection of iBGS was studied by implanting SMSs with and without iBGS injection. The dispersion of iBGS and the integration of the SMS were studied by using micro Computed Tomography (μCT) and histochemical analysis at two time points, 0 day and 8 weeks post-implantation.ResultsiBGS was successfully injected through the SMS and hardened in situ. After 8 weeks, μCT results revealed that the iBGS particles were resorbed and bone tissue was formed around the SMS and within its lateral exit holes.ConclusionsThis pilot animal study showed the high potential of the combined use of iBGS and SMS as a newly developed technique to promote the primary stability of MSs.
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Affiliation(s)
- Anastasia Bakopoulou
- Sydney Dental School, The University of Sydney, Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, The University of Sydney, Sydney, Australia
| | - Peter Hoang
- Sydney Dental School, The University of Sydney, Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, The University of Sydney, Sydney, Australia
| | - Ali Fathi
- School of Chemical and Biomolecular Engineering, Faculty of Engineering and Information Technologies, The University of Sydney, Sydney, Australia
| | - Matthew Foley
- Australian Centre for Microscopy & Microanalysis, Department of Archaeology, Faculty of Arts and Social Sciences, The University of Sydney, Sydney, Australia
| | - Colin Dunstan
- School of Aerospace, Mechanical and Mechatronic Engineering, Faculty of Engineering and Information Technologies, The University of Sydney, Sydney, Australia
| | - Oyku Dalci
- Sydney Dental School, The University of Sydney, Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, The University of Sydney, Sydney, Australia
| | - Alexandra K Papadopoulou
- Sydney Dental School, The University of Sydney, Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, The University of Sydney, Sydney, Australia
| | - M Ali Darendeliler
- Sydney Dental School, The University of Sydney, Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, The University of Sydney, Sydney, Australia
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Lee HJ, Kim B, Padalhin AR, Lee BT. Incorporation of chitosan-alginate complex into injectable calcium phosphate cement system as a bone graft material. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:385-392. [PMID: 30423721 DOI: 10.1016/j.msec.2018.09.039] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 08/04/2018] [Accepted: 09/12/2018] [Indexed: 11/17/2022]
Abstract
Calcium phosphate brushite type of cements have been used to replace bone graft materials because of their biocompatibility and other attractive features. Especially, injectability of cement allows easy handling of minimally invasive surgical techniques. New calcium phosphate cement (CPC) system, brushite based cement incorporated into polyelectrolyte complex, was developed in this study. Chitosan-alginate complex produced by an interaction between a cationic polymer (chitosan) and an anionic polymer (alginate) was loaded in the cement. This improved the functional properties and biocompatibility of the final cement. We optimized the liquid/solid (L/S) ratio of the cement components and investigated the compressive strength, setting time, pH change of CPC0 (with only citric acid) and CPC0.5, 1, and 1.5 (0.5, 1, and 1.5 v/v % chitosan-alginate complex in citric acid solution, respectively). The L/S ratio did not affect structural formation, while the addition of polymer complex showed new formation of macro-pores within CPC. However, a lower L/S ratio and higher amount of added polymer complex shortened the setting time and improved the compressive strength. The appropriate conditions for the injectable bone substitute were CPC1 with an L/S ratio of 0.45. To investigate the effect of the chitosan-alginate complex on CPC system in physiological conditions, CPC0 and CPC1 were implanted in a rabbit femoral head defect model for 1 and 3 months. Micro-computed tomography revealed improved bone formation in CPC1 compared to CPC0 3 months after implantation. Histological analysis revealed newly formed bone tissues around the peripheral sides of CPC0 and CPC1. The results indicate the potential value of the CPC system containing polymer complex as an injectable bone substitute. The study of the CPC-polymer complex system incorporating drugs or cells can be further developed into a controlled release system for faster bone regeneration.
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Affiliation(s)
- Hyun-Jung Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, South Korea
| | - Boram Kim
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, South Korea
| | - Andrew R Padalhin
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, South Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, South Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, South Korea.
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Wu T, Yang S, Shi H, Ye J. Preparation and cytocompatibility of a novel bismuth aluminate/calcium phosphate cement with high radiopacity. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:149. [PMID: 30182158 DOI: 10.1007/s10856-018-6154-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
In a minimally invasive surgery, using a bone cement being radiologically detectable is vital to the success of the procedure and avoiding cement leakage in the early stage. The radiopacity of calcium phosphate cement (CPC) is inadequate, thus limiting its clinic application in this area. In this work, bismuth aluminate (BiA) was employed as a radiopaque agent for CPC. The influences of BiA on physicochemical, radiopaque and in vitro biocompatible properties of CPC were investigated. With the increasing content of BiA, the setting time and the compressive strength of CPC were augmented, while the injectability of the cement pastes was reduced. The radiopacity of CPC was significantly improved by adding more than 6 wt.% BiA. CPC specimens with less than 12 wt.% BiA showed good cellular affinity. Moreover, the CPC containing 6 and 9 wt.% BiA promoted the cell growth and ALP activity of mouse bone marrow mesenchymal stem cells when compared with the control. On the basis of its improved radiopacity and cytocompatibility, the radiopaque CPC with 6 ~ 9 wt.% BiA is expected to be a potential substitute for bone defect restoration via minimally invasive surgery. CPC with bismuth aluminate reveals better radiopacity and cell affinity along with proper physicochemical properties.
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Affiliation(s)
- Tingting Wu
- Institute of Orthopedic Diseases and Center for Joint Surgery and Sports Medicine, The First Affiliated Hospital, Jinan University, Guangzhou, 510630, P.R. China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, P.R. China
| | - Shue Yang
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, P.R. China
- School of Materials Science and Engineering South, China University of Technology, Guangzhou, 510640, P.R. China
| | - Haishan Shi
- College of Chemistry and Materials, Jinan University, Guangzhou, 510632, P.R. China
| | - Jiandong Ye
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, P.R. China.
- School of Materials Science and Engineering South, China University of Technology, Guangzhou, 510640, P.R. China.
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Jang JH, Shin S, Kim HJ, Jeong J, Jin HE, Desai MS, Lee SW, Kim SY. Improvement of physical properties of calcium phosphate cement by elastin-like polypeptide supplementation. Sci Rep 2018; 8:5216. [PMID: 29581559 PMCID: PMC5980081 DOI: 10.1038/s41598-018-23577-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/15/2018] [Indexed: 11/23/2022] Open
Abstract
Calcium phosphate cements (CPCs) are synthetic bioactive cements widely used as hard tissue substitutes. Critical limitations of use include their poor mechanical properties and poor anti-washout behaviour. To address those limitations, we combined CPC with genetically engineered elastin-like polypeptides (ELPs). We investigated the effect of the ELPs on the physical properties and biocompatibility of CPC by testing ELP/CPC composites with various liquid/powder ratios. Our results show that the addition of ELPs improved the mechanical properties of the CPC, including the microhardness, compressive strength, and washout resistance. The biocompatibility of ELP/CPC composites was also comparable to that of the CPC alone. However, supplementing CPC with ELPs functionalized with octaglutamate as a hydroxyapatite binding peptide increased the setting time of the cement. With further design and modification of our biomolecules and composites, our research will lead to products with diverse applications in biology and medicine.
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Affiliation(s)
- Ji-Hyun Jang
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Sumi Shin
- Department of Conservative Dentistry, Graduate School, Kyung Hee University, Seoul, Korea
| | - Hyun-Jung Kim
- Department of Conservative Dentistry, Graduate School, Kyung Hee University, Seoul, Korea
| | - Jinyoung Jeong
- Hazards Monitoring BNT Research Center, Korea Research Institute of Bioscience and Biotechnology, KRIBB School, University of Science and Technology, Daejon, Korea
| | - Hyo-Eon Jin
- College of Pharmacy, Ajou University, Suwon, Korea
| | - Malav S Desai
- Department of Bioengineering, University of California, Berkeley, USA
| | - Seung-Wuk Lee
- Department of Bioengineering, University of California, Berkeley, USA.
| | - Sun-Young Kim
- Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.
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The Mechanical Properties of Biocompatible Apatite Bone Cement Reinforced with Chemically Activated Carbon Fibers. MATERIALS 2018; 11:ma11020192. [PMID: 29373487 PMCID: PMC5848889 DOI: 10.3390/ma11020192] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/23/2018] [Accepted: 01/24/2018] [Indexed: 12/11/2022]
Abstract
Calcium phosphate cement (CPC) is a well-established bone replacement material in dentistry and orthopedics. CPC mimics the physicochemical properties of natural bone and therefore shows excellent in vivo behavior. However, due to their brittleness, the application of CPC implants is limited to non-load bearing areas. Generally, the fiber-reinforcement of ceramic materials enhances fracture resistance, but simultaneously reduces the strength of the composite. Combining strong C-fiber reinforcement with a hydroxyapatite to form a CPC with a chemical modification of the fiber surface allowed us to adjust the fiber-matrix interface and consequently the fracture behavior. Thus, we could demonstrate enhanced mechanical properties of CPC in terms of bending strength and work of fracture to a strain of 5% (WOF5). Hereby, the strength increased by a factor of four from 9.2 ± 1.7 to 38.4 ± 1.7 MPa. Simultaneously, the WOF5 increased from 0.02 ± 0.004 to 2.0 ± 0.6 kJ∙m-2, when utilizing an aqua regia/CaCl₂ pretreatment. The cell proliferation and activity of MG63 osteoblast-like cells as biocompatibility markers were not affected by fiber addition nor by fiber treatment. CPC reinforced with chemically activated C-fibers is a promising bone replacement material for load-bearing applications.
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Self-Setting Calcium Orthophosphate (CaPO4) Formulations. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/978-981-10-5975-9_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Konishi T, Lim PN, Honda M, Nagaya M, Nagashima H, Thian ES, Aizawa M. Fabrication of chelate-setting α-tricalcium phosphate cement using sodium citrate and sodium alginate as mixing solution and its in vivo
osteoconductivity. J Biomed Mater Res B Appl Biomater 2017; 106:2361-2370. [PMID: 29149487 DOI: 10.1002/jbm.b.34028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/02/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Toshiisa Konishi
- Graduate School of Natural Science and Technology; Okayama University; Okayama Japan
- Department of Mechanical Engineering; National University of Singapore; Singapore Singapore
| | - Poon Nian Lim
- Department of Mechanical Engineering; National University of Singapore; Singapore Singapore
| | - Michiyo Honda
- Department of Applied Chemistry, School of Science and Technology; Meiji University; Kawasaki Japan
- Meiji University International Institute for Bio-Resource Research; Kawasaki Japan
| | - Masaki Nagaya
- Meiji University International Institute for Bio-Resource Research; Kawasaki Japan
| | - Hiroshi Nagashima
- Meiji University International Institute for Bio-Resource Research; Kawasaki Japan
- Department of Life Science, School of Agriculture; Meiji University; Kawasaki Japan
| | - Eng San Thian
- Department of Mechanical Engineering; National University of Singapore; Singapore Singapore
| | - Mamoru Aizawa
- Department of Applied Chemistry, School of Science and Technology; Meiji University; Kawasaki Japan
- Meiji University International Institute for Bio-Resource Research; Kawasaki Japan
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Eldesouky I, Harrysson O, Marcellin-Little DJ, West H, El-Hofy H. Pre-clinical evaluation of the mechanical properties of a low-stiffness cement-injectable hip stem. J Med Eng Technol 2017; 41:681-691. [PMID: 29111845 DOI: 10.1080/03091902.2017.1394391] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In total hip arthroplasty (THA), the femoral stem can be fixed with or without bone cement. Cementless stem fixation is recommended for young and active patients as it eliminates the risk of loss of fixation at the bone-cement and cement-implant interfaces. Cementless fixation, however, suffers from a relatively high early revision rate. In the current research, a novel low-stiffness hip stem was designed, fabricated and tested. The stem design provided the option to inject biodegradable bone cement that could enhance initial stem stability. The stem was made of Ti6Al4V alloy. The proximal portion of the stem was porous, with cubic cells. The stem was fabricated using electron beam melting (EBM) technology and tested in compression and bending. Finite-element analysis was used to evaluate stem performance under a dynamic load representing a stair descending cycle and compare it to the performance of a solid stem with similar geometry. The von Mises stresses and maximum principal strains generated within the bone increased after porous stem insertion compared to solid stem insertion. The low-modulus stem tested in this study has acceptable mechanical properties and generates strain patterns in bone that appear compatible with clinical use.
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Affiliation(s)
- Ibrahim Eldesouky
- a Department of Industrial Engineering and Systems Management , Egypt-Japan University of Science and Technology , New Borg Elarab , Egypt
| | - Ola Harrysson
- b Center for Additive Manufacturing and Logistics, Edward P. Fitts Department of Industrial & Systems Engineering , North Carolina State University , Raleigh , NC , USA
| | - Denis J Marcellin-Little
- b Center for Additive Manufacturing and Logistics, Edward P. Fitts Department of Industrial & Systems Engineering , North Carolina State University , Raleigh , NC , USA.,c Department of Clinical Sciences, College of Veterinary Medicine , North Carolina State University , Raleigh , NC , USA
| | - Harvey West
- b Center for Additive Manufacturing and Logistics, Edward P. Fitts Department of Industrial & Systems Engineering , North Carolina State University , Raleigh , NC , USA
| | - Hassan El-Hofy
- a Department of Industrial Engineering and Systems Management , Egypt-Japan University of Science and Technology , New Borg Elarab , Egypt
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Cui X, Huang C, Zhang M, Ruan C, Peng S, Li L, Liu W, Wang T, Li B, Huang W, Rahaman MN, Lu WW, Pan H. Enhanced osteointegration of poly(methylmethacrylate) bone cements by incorporating strontium-containing borate bioactive glass. J R Soc Interface 2017; 14:20161057. [PMID: 28615491 PMCID: PMC5493788 DOI: 10.1098/rsif.2016.1057] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/23/2017] [Indexed: 11/12/2022] Open
Abstract
Although poly(methylmethacrylate) (PMMA) cements are widely used in orthopaedics, they have numerous drawbacks. This study aimed to improve their bioactivity and osseointegration by incorporating strontium-containing borate bioactive glass (SrBG) as the reinforcement phase and bioactive filler of PMMA cement. The prepared SrBG/PMMA composite cements showed significantly decreased polymerization temperature when compared with PMMA and retained properties of appropriate setting time and high mechanical strength. The bioactivity of SrBG/PMMA composite cements was confirmed in vitro, evidenced by ion release (Ca, P, B and Sr) from SrBG particles. The cellular responses of MC3T3-E1 cells in vitro demonstrated that SrBG incorporation could promote adhesion, migration, proliferation and collagen secretion of cells. Furthermore, our in vivo investigation revealed that SrBG/PMMA composite cements presented better osseointegration than PMMA bone cement. SrBG in the composite cement could stimulate new-bone formation around the interface between the composite cement and host bone at eight and 12 weeks post-implantation, whereas PMMA bone cement only stimulated development of an intervening connective tissue layer. Consequently, the SrBG/PMMA composite cement may be a better alternative to PMMA cement in clinical applications and has promising orthopaedic applications by minimal invasive surgery.
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Affiliation(s)
- Xu Cui
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Chengcheng Huang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Meng Zhang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Changshun Ruan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Songlin Peng
- Department of Spine Surgery, Shenzhen People's Hospital, Jinan University School of Medicine, Shenzhen 518020, People's Republic of China
| | - Li Li
- The Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker's Hospital, Liuzhou 545005, People's Republic of China
| | - Wenlong Liu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Ting Wang
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, University of Hong Kong, Shenzhen, People's Republic of China
| | - Bing Li
- The Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker's Hospital, Liuzhou 545005, People's Republic of China
| | - Wenhai Huang
- Institute of Bioengineering and Information Technology Materials, Tongji University, Shanghai 200092, People's Republic of China
| | - Mohamed N Rahaman
- Department of Materials Science and Engineering, Center for Biomedical Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409-0340, USA
| | - William W Lu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Room 907, Lab Block, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
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Modification of calcium phosphate cement with poly (γ-glutamic acid) and its strontium salt for kyphoplasty application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:352-361. [PMID: 28866174 DOI: 10.1016/j.msec.2017.05.070] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/02/2017] [Accepted: 05/13/2017] [Indexed: 12/11/2022]
Abstract
To meet the requirements of minimally invasive surgical treatments for osteoporotic vertebral compression fracture, various strategies have been proposed to enhance the properties of calcium phosphate cement (CPC). Here, a new strategy was developed by incorporating poly (γ-glutamic acid) (γ-PGA) and its strontium salt into the formulation of alpha tricalcium phosphate (α-TCP)-based CPC. Effects of γ-PGA on the injectability, cohesion, setting times, mechanical compressive strengths and cytocompatibility were systematically studied. Results showed that the injectability, cohesion and setting times were considerably improved by introducing γ-PGA into the CPC. Moreover, after setting for 7days, the compressive strengths increased from 14.6±1.4MPa for pure CPC to 35.3±1.7MPa for CPC with 8.9wt% γ-PGA and further to 61.2±5.4MPa for CPC with 8.9wt% γ-PGA combined with its strontium salt. In vitro osteoblast proliferation tests showed that the group of CPC modified by γ-PGA and its strontium salt had better cytocompatibility than the pure CPC group. All results suggest that optimal properties were obtained for the cement with 8.9wt% γ-PGA added to its solid phases and using strontium salt as the reactive liquid phase, making it as a promising candidate for application in kyphoplasty.
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Ida Y, Bae J, Sekine K, Kawano F, Hamada K. Effects of powder-to-liquid ratio on properties of β-tricalcium-phosphate cements modified using high-energy ball-milling. Dent Mater J 2017; 36:590-599. [PMID: 28450674 DOI: 10.4012/dmj.2016-341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The authors have developed a β-tricalcium-phosphate (β-TCP) powder modified mechano-chemically through the application of a ball-milling process (mβ-TCP). The resulting powder can be used in a calcium-phosphate-cement (CPC). In this study, the effects of the powder-to-liquid ratio (P/L ratio) on the properties of the CPCs were investigated, and an appropriate P/L ratio that would simultaneously improve injectability and strength was clarified. The mβ-TCP cement mixed at a P/L ratio of 2.5 and set in air exhibited sufficient injectability until 20 min after mixing, and strength similar to or higher than that mixed at a P/L ratio of 2.0 and 2.78. Although the mβ-TCP cements set in vivo and in SBF were found to exhibit a lower strength than those set in air, it did have an appropriate setting time and strength for clinical applications. In conclusion, P/L ratio optimization successfully improved the strength of injectable mβ-TCP cement.
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Affiliation(s)
- Yumika Ida
- Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science
| | - Jiyoung Bae
- Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science
| | - Kazumitsu Sekine
- Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science
| | - Fumiaki Kawano
- Department of Comprehensive Dentistry, Tokushima University Graduate School of Oral Science
| | - Kenichi Hamada
- Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science
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41
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O'Neill R, McCarthy HO, Montufar EB, Ginebra MP, Wilson DI, Lennon A, Dunne N. Critical review: Injectability of calcium phosphate pastes and cements. Acta Biomater 2017; 50:1-19. [PMID: 27838464 DOI: 10.1016/j.actbio.2016.11.019] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 11/03/2016] [Accepted: 11/08/2016] [Indexed: 12/26/2022]
Abstract
Calcium phosphate cements (CPC) have seen clinical success in many dental and orthopaedic applications in recent years. The properties of CPC essential for clinical success are reviewed in this article, which includes properties of the set cement (e.g. bioresorbability, biocompatibility, porosity and mechanical properties) and unset cement (e.g. setting time, cohesion, flow properties and ease of delivery to the surgical site). Emphasis is on the delivery of calcium phosphate (CaP) pastes and CPC, in particular the occurrence of separation of the liquid and solid components of the pastes and cements during injection; and established methods to reduce this phase separation. In addition a review of phase separation mechanisms observed during the extrusion of other biphasic paste systems and the theoretical models used to describe these mechanisms are discussed. STATEMENT OF SIGNIFICANCE Occurrence of phase separation of calcium phosphate pastes and cements during injection limits their full exploitation as a bone substitute in minimally invasive surgical applications. Due to lack of theoretical understanding of the phase separation mechanism(s), optimisation of an injectable CPC that satisfies clinical requirements has proven difficult. However, phase separation of pastes during delivery has been the focus across several research fields. Therefore in addition to a review of methods to reduce phase separation of CPC and the associated constraints, a review of phase separation mechanisms observed during extrusion of other pastes and the theoretical models used to describe these mechanisms is presented. It is anticipated this review will benefit future attempts to develop injectable calcium phosphate based systems.
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Affiliation(s)
- R O'Neill
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Ashby Building, Stranmillis Rd, Belfast BT9 5AH, United Kingdom
| | - H O McCarthy
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom
| | - E B Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya. BarcelonaTech (UPC), Av. Diagonal 647, 08028 Barcelona, Spain; Institute for Bioengineering of Catalonia, C. Baldiri Reixach 10, 08028 Barcelona, Spain
| | - M-P Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya. BarcelonaTech (UPC), Av. Diagonal 647, 08028 Barcelona, Spain; Institute for Bioengineering of Catalonia, C. Baldiri Reixach 10, 08028 Barcelona, Spain
| | - D I Wilson
- Department of Chemical Engineering and Biotechnology, New Museums Site, Pembroke Street, University of Cambridge, CB2 3RA, United Kingdom
| | - A Lennon
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Ashby Building, Stranmillis Rd, Belfast BT9 5AH, United Kingdom
| | - N Dunne
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom; Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Stokes Building, Collins Avenue, Dublin 9, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
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42
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Li X, He F, Ye J. Preparation, characterization and in vitro cell performance of anti-washout calcium phosphate cement modified by sodium polyacrylate. RSC Adv 2017. [DOI: 10.1039/c7ra03221h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The anti-washout ability of calcium phosphate cement (CPC) is essential for its application in massive hemorrhage regions. Sodium polyacrylate (PAAS) could be used to improve the anti-washout property of CPC paste.
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Affiliation(s)
- Xingmei Li
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510641
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - Fupo He
- School of Electromechanical Engineering
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Jiandong Ye
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510641
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
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43
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Torres PMC, Marote A, Cerqueira AR, Calado AJ, Abrantes JCC, Olhero S, da Cruz e Silva OAB, Vieira SI, Ferreira JMF. Injectable MnSr-doped brushite bone cements with improved biological performance. J Mater Chem B 2017; 5:2775-2787. [DOI: 10.1039/c6tb03119f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Combining Mn and Sr co-doping β-TCP powder with sucrose addition in the setting liquid enhances injectability, mechanical and biological performance of brushite-forming cements, renders them promising for minimally invasive surgery applications.
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Affiliation(s)
- P. M. C. Torres
- Department of Materials and Ceramic Engineering
- CICECO
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - A. Marote
- Department of Medical Sciences
- Institute of Biomedicine (iBiMED)
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - A. R. Cerqueira
- Department of Medical Sciences
- Institute of Biomedicine (iBiMED)
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - A. J. Calado
- Department of Biology
- GeoBioTec
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - J. C. C. Abrantes
- Department of Materials and Ceramic Engineering
- CICECO
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - S. Olhero
- Department of Materials and Ceramic Engineering
- CICECO
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - O. A. B. da Cruz e Silva
- Department of Medical Sciences
- Institute of Biomedicine (iBiMED)
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - S. I. Vieira
- Department of Medical Sciences
- Institute of Biomedicine (iBiMED)
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - J. M. F. Ferreira
- Department of Materials and Ceramic Engineering
- CICECO
- University of Aveiro
- 3810-193 Aveiro
- Portugal
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44
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Blum C, Brückner T, Ewald A, Ignatius A, Gbureck U. Mg:Ca ratio as regulating factor for osteoclastic in vitro resorption of struvite biocements. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:111-119. [PMID: 28183587 DOI: 10.1016/j.msec.2016.12.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 10/28/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
Abstract
Bioceramic degradation can occur by both passive dissolution and following active osteoclastic bone remodeling. Key parameters controlling ceramic degradation are the pH-dependent solubility product of the ceramic phase, which alters ion concentrations in physiological solution and hence regulates cell activity. This study investigated the in vitro degradation profiles of various calcium magnesium phosphate ceramics formed at low temperature. The passive resorption was measured by incubating the cement samples in cell culture medium, while active resorption was determined during a surface culture of multinuclear osteoclastic cells derived from RAW 264.7 macrophages. All surfaces showed mostly similar TRAP activities after adding RANKL-factor to stimulate osteoclastogenesis. The active degradation of the materials by osteoclasts was found to be the predominant factor for ceramic dissolution as determined by measuring the ion concentrations of cell culture medium. Here, large sized osteoclasts formed predominantly on ceramics with a Mg:Ca ratio ≥2.0 seemed to be less effective compared to smaller macrophages.
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Affiliation(s)
- Carina Blum
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany
| | - Theresa Brückner
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany
| | - Andrea Ewald
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany
| | - Anita Ignatius
- Centre for Musculoskeletal Research, Institute for Orthopaedic Research and Biomechanics, University of Ulm, Helmholtzstrasse 14, D-89081 Ulm, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany.
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45
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O'Neill R, McCarthy HO, Cunningham E, Montufar E, Ginebra MP, Wilson DI, Lennon A, Dunne N. Extent and mechanism of phase separation during the extrusion of calcium phosphate pastes. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:29. [PMID: 26704546 PMCID: PMC4690833 DOI: 10.1007/s10856-015-5615-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 10/28/2015] [Indexed: 05/22/2023]
Abstract
The aim of this study was to increase understanding of the mechanism and dominant drivers influencing phase separation during ram extrusion of calcium phosphate (CaP) paste for orthopaedic applications. The liquid content of extrudate was determined, and the flow of liquid and powder phases within the syringe barrel during extrusion were observed, subject to various extrusion parameters. Increasing the initial liquid-to-powder mass ratio, LPR, (0.4-0.45), plunger rate (5-20 mm/min), and tapering the barrel exit (45°-90°) significantly reduced the extent of phase separation. Phase separation values ranged from (6.22 ± 0.69 to 18.94 ± 0.69 %). However altering needle geometry had no significant effect on phase separation. From powder tracing and liquid content determination, static zones of powder and a non-uniform liquid distribution was observed within the barrel. Measurements of extrudate and paste LPR within the barrel indicated that extrudate LPR remained constant during extrusion, while LPR of paste within the barrel decreased steadily. These observations indicate the mechanism of phase separation was located within the syringe barrel. Therefore phase separation can be attributed to either; (1) the liquid being forced downstream by an increase in pore pressure as a result of powder consolidation due to the pressure exerted by the plunger or (2) the liquid being drawn from paste within the barrel, due to suction, driven by dilation of the solids matrix at the barrel exit. Differentiating between these two mechanisms is difficult; however results obtained suggest that suction is the dominant phase separation mechanism occurring during extrusion of CaP paste.
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Affiliation(s)
- Rory O'Neill
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Stranmillis Road, Belfast, BT9 5AH, UK.
| | - Helen O McCarthy
- School of Pharmacy, Queen's University Belfast, Lisburn Road, Belfast, BT9 7BL, UK.
| | - Eoin Cunningham
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Stranmillis Road, Belfast, BT9 5AH, UK.
| | - Edgar Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Av. Diagonal 647, 08028, Barcelona, Spain.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Av. Diagonal 647, 08028, Barcelona, Spain.
| | - D Ian Wilson
- Department of Chemical Engineering and Biotechnology, New Museums Site, University of Cambridge, Pembroke St, Cambridge, CB2 3RA, UK.
| | - Alex Lennon
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Stranmillis Road, Belfast, BT9 5AH, UK.
| | - Nicholas Dunne
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Stranmillis Road, Belfast, BT9 5AH, UK.
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin 9, Glasnevin, Ireland.
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46
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Torres P, Gouveia S, Olhero S, Kaushal A, Ferreira J. Injectability of calcium phosphate pastes: Effects of particle size and state of aggregation of β-tricalcium phosphate powders. Acta Biomater 2015; 21:204-16. [PMID: 25870171 DOI: 10.1016/j.actbio.2015.04.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 03/10/2015] [Accepted: 04/07/2015] [Indexed: 10/23/2022]
Abstract
The present study discloses a systematic study about the influence of some relevant experimental variables on injectability of calcium phosphate cements. Non-reactive and reactive pastes were prepared, based on tricalcium phosphate doped with 5 mol% (Sr-TCP) that was synthesised by co-precipitation. The varied experimental parameters included: (i) the heat treatment temperature within the range of 800-1100°C; (ii) different milling extents of calcined powders; (iii) the liquid-to-powder ratio (LPR); (iv) the use of powder blends with different particle sizes (PS) and particle size distributions (PSD); (v) the partial replacement of fine powders by large spherical dense granules prepared via freeze granulation method to simulate coarse individual particles. The aim was contributing to better understanding of the effects of PS, PSD, morphology and state of aggregation of the starting powders on injectability of pastes produced thereof. Powders heat treated at 800 and 1000°C with different morphologies but with similar apparent PSD curves obtained by milling/blending originated completely injectable reactive cement pastes at low LPR. This contrasted with non-reactive systems prepared thereof under the same conditions. Hypotheses were put forward to explain why the injectability results collected upon extruding non-reactive pastes cannot be directly transposed to reactive systems. The results obtained underline the interdependent roles of the different powder features and ionic strength in the liquid media on determining the flow and injectability behaviours.
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47
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Bae J, Ida Y, Sekine K, Kawano F, Hamada K. Effects of high-energy ball-milling on injectability and strength of β-tricalcium-phosphate cement. J Mech Behav Biomed Mater 2015; 47:77-86. [DOI: 10.1016/j.jmbbm.2015.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Revised: 03/02/2015] [Accepted: 03/10/2015] [Indexed: 10/23/2022]
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48
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Bohner M, Tiainen H, Michel P, Döbelin N. Design of an inorganic dual-paste apatite cement using cation exchange. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:63. [PMID: 25631266 DOI: 10.1007/s10856-015-5400-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 11/27/2014] [Indexed: 06/04/2023]
Abstract
The use of hydraulic calcium phosphate cements (CPCs) as bone substitute is impaired by their relatively poor handling due to the need to mix a powder and a liquid during surgery. The aim of the present study was to assess the possibility to design CPCs as inorganic dual-paste cements, where both pastes would be stable for years, but would react as soon as they are mixed together. Results showed that aqueous pastes of α-tricalcium phosphate (α-TCP) powder could be stabilized for up to a year at room temperature by the use of 0.1 M Mg chloride solution. Adding a calcium chloride solution in a 1:4 volume ratio activated α-TCP pastes provided the Ca/Mg ratio was larger than one. Mechanistic investigations suggest that Ca ions can displace Mg cations adsorbed at the surface of α-TCP particles to initiate α-TCP transformation to calcium-deficient hydroxyapatite and concomitant paste hardening. The compressive strength (29 MPa) was similar to that of commercial formulations (5-80 MPa). Other divalent cations (Ba, Ni, Sr) had a similar effect although with a different degree of efficacy.
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Affiliation(s)
- Marc Bohner
- RMS Foundation, Bischmattstrasse 12, 2544, Bettlach, Switzerland,
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49
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Mestres G, Santos CF, Engman L, Persson C, Karlsson Ott M. Scavenging effect of Trolox released from brushite cements. Acta Biomater 2015; 11:459-66. [PMID: 25229765 DOI: 10.1016/j.actbio.2014.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 07/30/2014] [Accepted: 09/05/2014] [Indexed: 01/30/2023]
Abstract
In this study a brushite cement was doped with the chain-breaking antioxidant Trolox. The effect of the antioxidant on the physical properties of the cement was evaluated and the release of Trolox was monitored by UV spectroscopy. The ability of the Trolox set free to scavenge reactive oxygen species (ROS) released by macrophages was determined in vitro using a luminol-amplified chemiluminescence assay. Trolox did not modify the crystalline phases of the set cement, which mainly formed crystalline brushite after 7 days in humid conditions. The setting time, compressive strength and morphology of the cement also remained unaltered after the addition of the antioxidant. Trolox was slowly released from the cement following a non-Fickian transport mechanism and nearly 64% of the total amount was released after 3 days. Moreover, the capacity of Trolox to scavenge the ROS released by macrophages increased in a dose-dependent manner. Trolox-loaded cements are expected to reduce some of the first harmful effects of acute inflammation and can thus potentially protect the surrounding tissue during implantation of these as well as other materials used in conjunction.
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50
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Sony S, Suresh Babu S, Nishad KV, Varma H, Komath M. Development of an injectable bioactive bone filler cement with hydrogen orthophosphate incorporated calcium sulfate. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:5355. [PMID: 25578708 DOI: 10.1007/s10856-014-5355-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 09/10/2014] [Indexed: 06/04/2023]
Abstract
Calcium sulfate cement (CSC) has emerged as a potential bone filler material mainly because of the possibility of incorporating therapeutic agents. Delivery of the cement through a needle or cannula will make it more useful in clinical applications. However, it was not possible to make CSC injectable because of the inherent lack of viscosity. The present work demonstrates the design development of a viscous and fully-injectable CSC by incorporating hydrogen orthophosphate ions, which does not hamper the biocompatibility of the material. The effect of addition of hydrogen orthophosphate on the rheological properties of the CSC paste was studied using a custom made capillary rheometer. The physicochemical changes associated with cement setting process were examined using X-ray diffraction and Fourier transform infrared spectroscopy and the thermal changes were measured through isothermal differential scanning calorimetry. Micromorphological features of different compositions were observed in environmental scanning electron microscopy and the presence of phosphate ions was identified with energy dispersive X-ray spectroscopic analysis and inductively coupled plasma-optical emission spectroscopy. The results indicated that HPO4 (2-) ions have profound effects on the rheological properties and setting of the CSC paste. Significant finding is that the HPO4 (2-) ions are getting substituted in the calcium sulfate dihydrate crystals during setting. The variations of setting time and compressive strength of the cement with the additive concentration were investigated. An optimum concentration of 2.5 % w/w gave a fully-injectable cement with clinically relevant setting time (below 20 min) and compressive strength (12 MPa). It was possible to inject the optimised cement paste from a syringe through an 18-gauge needle with thumb pressure. This cement will be useful both as bone filler and as a local drug delivery medium and it allows minimally invasive bone defect management.
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Affiliation(s)
- Sandhya Sony
- Biomedical Technology Wing, Bioceramics Laboratory, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, 695012, India
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