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Wekwejt M, Khamenka M, Ronowska A, Gbureck U. Dual-Setting Bone Cement Based On Magnesium Phosphate Modified with Glycol Methacrylate Designed for Biomedical Applications. ACS Appl Mater Interfaces 2023; 15:55533-55544. [PMID: 38058111 DOI: 10.1021/acsami.3c14491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Magnesium phosphate cement (MPC) is a suitable alternative for the currently used calcium phosphates, owing to beneficial properties like favorable resorption rate, fast hardening, and higher compressive strength. However, due to insufficient mechanical properties and high brittleness, further improvement is still expected. In this paper, we reported the preparation of a novel type of dual-setting cement based on MPC with poly(2-hydroxyethyl methacrylate) (pHEMA). The aim of our study was to evaluate the effect of HEMA addition, especially its concentration and premix time, on the selected properties of the composite. Several beneficial effects were found: better formability, shortened setting time, and improvement of mechanical strengths. The developed cements were hardening in ∼16-21 min, consisted of well-crystallized phases and polymerized HEMA, had porosity between ∼2-11%, degraded slowly by ∼0.1-4%/18 days, their wettability was ∼20-30°, they showed compressive and bending strength between ∼45-73 and 13-20 MPa, respectively, and, finally, their Young's Modulus was close to ∼2.5-3.0 GPa. The results showed that the optimal cement composition is MPC+15%HEMA and 4 min of polymer premixing time. Overall, our research suggested that this developed cement may be used in various biomedical applications.
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Affiliation(s)
- Marcin Wekwejt
- Biomaterials Technology Department, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, G. Narutowicza 11/12 Street, 80-233 Gdańsk, Poland
| | - Maryia Khamenka
- Scientific Club "Materials in Medicine", Advanced Materials Centre, Gdańsk University of Technology, G. Narutowicza 11/12 Street, 80-233 Gdańsk, Poland
| | - Anna Ronowska
- Chair of Clinical Biochemistry, Department of Laboratory Medicine, Medical University of Gdańsk, 2x, M. Skłodowskiej-Curie 3a Street, 80-210 Gdańsk, Poland
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2 Street, D-97070 Würzburg, Germany
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2
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Pańtak P, Czechowska JP, Cichoń E, Zima A. Novel Double Hybrid-Type Bone Cements Based on Calcium Phosphates, Chitosan and Citrus Pectin. Int J Mol Sci 2023; 24:13455. [PMID: 37686268 PMCID: PMC10488044 DOI: 10.3390/ijms241713455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/01/2023] [Accepted: 08/09/2023] [Indexed: 09/10/2023] Open
Abstract
In this work, the influence of the liquid phase composition on the physicochemical properties of double hybrid-type bone substitutes was investigated. The solid phase of obtained biomicroconcretes was composed of highly reactive α-tricalcium phosphate powder (α-TCP) and hybrid hydroxyapatite/chitosan granules (HA/CTS). Various combinations of disodium phosphate (Na2HPO4) solution and citrus pectin gel were used as liquid phases. The novelty of this study is the development of double-hybrid materials with a dual setting system. The double hybrid phenomenon is due to the interactions between polycationic polymer (chitosan in hybrid granules) and polyanionic polymer (citrus pectin). The chemical and phase composition (FTIR, XRD), setting times (Gillmore needles), injectability, mechanical strength, microstructure (SEM) and chemical stability in vitro were studied. The setting times of obtained materials ranged from 4.5 to 30.5 min for initial and from 7.5 to 55.5 min for final setting times. The compressive strength varied from 5.75 to 13.24 MPa. By incorporating citrus pectin into the liquid phase of the materials, not only did it enhance their physicochemical properties, but it also resulted in the development of fully injectable materials featuring a dual setting system. It has been shown that the properties of materials can be controlled by using the appropriate ratio of citrus pectin in the liquid phase.
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Affiliation(s)
- Piotr Pańtak
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-058 Krakow, Poland
| | - Joanna P. Czechowska
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-058 Krakow, Poland
| | - Ewelina Cichoń
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland;
| | - Aneta Zima
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-058 Krakow, Poland
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3
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Tronco MC, Cassel JB, Dos Santos LA. α-TCP-based Calcium Phosphate Cements: a critical review. Acta Biomater 2022; 151:70-87. [PMID: 36028195 DOI: 10.1016/j.actbio.2022.08.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 08/04/2022] [Accepted: 08/17/2022] [Indexed: 11/18/2022]
Abstract
Calcium phosphates are promising materials for applications in bone repair and substitution, particularly for their bioactivity and ability to form self-setting cements. Among them, α-tricalcium phosphate (α-TCP) stands out due to its high solubility, its hydration reaction and bioresorbability. The synthesis of α-TCP is particularly complex and the interactions between some of the synthesis parameters are still not completely understood. The variety of methods available to synthesize α-TCP has provided a substantial variance in the properties of α-TCP-based cements and the decision about which method, parameters and starting reagents will be used for the powder's synthesis is determinant of the properties of the resulting material. Therefore, this review paper focuses on α-TCP's synthesis and properties, presenting the synthesis methods currently in use as well as a discussion of how the synthesis parameters and the cement preparation affect the reactivity and mechanical properties of the material, providing a guide for the selection of the most suitable process for each α-TCP application. STATEMENT OF SIGNIFICANCE: α-TCP is a calcium phosphate and it is currently one of the most investigated bioceramics for applications that explore its bioresorbability and the hydration reaction of α-TCP-based cements. Despite the increasing number of publications on the topic, there are still aspects not well understood. This review article aims at contributing to this fascinating subject by offering an update on the state of the art of α-TCP's synthesis methods, while also addressing topics that are not often discussed about this material, such as the preparation of α-TCP-based cements and how its parameters affect the properties of the resulting cements.
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Affiliation(s)
- Matheus C Tronco
- Biomaterials Laboratory, Materials Department, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil.
| | - Júlia B Cassel
- Biomaterials Laboratory, Materials Department, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil.
| | - Luís A Dos Santos
- Biomaterials Laboratory, Materials Department, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil.
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Lacan I, Moldovan M, Sarosi C, Ardelean I. Chitosan Effect on Hardening Dynamics of Calcium Phosphate Cement: Low-Field NMR Relaxometry Investigations. Polymers (Basel) 2022; 14:polym14153042. [PMID: 35956557 PMCID: PMC9370822 DOI: 10.3390/polym14153042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/22/2022] [Accepted: 07/23/2022] [Indexed: 11/29/2022] Open
Abstract
Calcium phosphate cements are used in dentistry and orthopedics to repair and reconstruct bone defects. The properties of these bone cements can be improved by introducing additives into their composition. One favorable additive is chitosan, which can be beneficial but can also cause considerable damage if it has a high load, thus, limiting its clinical applicability and performance. That is why understanding chitosan’s role in cement composition is an important issue when developing new materials. The present work uses low-field nuclear magnetic resonance (NMR) relaxometry to investigate the effect introduced by the addition of chitosan on the hardening process of calcium phosphate cement. Two samples, prepared with and without chitosan, were comparatively investigated during the first six minutes of hardening. The liquid evolution inside these samples was monitored using transverse relaxation time distributions. It demonstrated an acceleration effect on the hardening dynamics introduced by the presence of chitosan. Furthermore, it was shown that even after one hour of hardening, there were still unreacted monomers inside the bone cement and their amount was reduced in the presence of chitosan.
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Affiliation(s)
- Ioana Lacan
- Department of Physics and Chemistry, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania;
| | - Mărioara Moldovan
- Department of Polymer Composites, “Raluca Ripan” Chemistry Research Institute, “Babes-Bolyai” University, 400294 Cluj-Napoca, Romania; (M.M.); (C.S.)
| | - Codruța Sarosi
- Department of Polymer Composites, “Raluca Ripan” Chemistry Research Institute, “Babes-Bolyai” University, 400294 Cluj-Napoca, Romania; (M.M.); (C.S.)
| | - Ioan Ardelean
- Department of Physics and Chemistry, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania;
- Correspondence:
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Rödel M, Teßmar J, Groll J, Gbureck U. Dual setting brushite—gelatin cement with increased ductility and sustained drug release. J Biomater Appl 2022; 36:1882-1898. [DOI: 10.1177/08853282221075877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel dual setting brushite-gelatin cement was achieved by genip ininitiated cross-linking of gelatin during cement setting. Although the combination of an inorganic and organic phase resulted in a decrease of the compressive strength from about 10 MPa without polymeric phase to 3–6–MPa for gelatin modified composites, an increase in elastic properties due to the gelatin hydrogel with a concentration of 10.0 w/v% was achieved. For a powder-to-liquid ratio of 2.5 g*mL−1, a shift of initial maximum stress value during compression testing was observed up to 5% deformation and tested samples showed a pseudo-ductile fracture behavior. The obtained composites of the different formulations were characterized regarding phase composition, porosity as well as drug loading capacity with rifampicin and vancomycin. For the latter, a sustained and prolonged release was realized with a drug release profile according to the Higuchi model and a release exponent of n = 0.5 for the formulation with a PLR of 2.5 g*mL−1 and an incorporation of 10.0 w/v% gelatin.
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Affiliation(s)
- Michaela Rödel
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Würzburg, Germany
| | - Jörg Teßmar
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Würzburg, Germany
| | - Jürgen Groll
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Würzburg, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Würzburg, Germany
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Pańtak P, Cichoń E, Czechowska J, Zima A. Influence of Natural Polysaccharides on Properties of the Biomicroconcrete-Type Bioceramics. Materials (Basel) 2021; 14:ma14247496. [PMID: 34947091 PMCID: PMC8708244 DOI: 10.3390/ma14247496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/23/2021] [Accepted: 12/03/2021] [Indexed: 11/16/2022]
Abstract
In this paper, novel hybrid biomicroconcrete-type composites were developed and investigated. The solid phase of materials consisted of a highly reactive α -tricalcium phosphate (α-TCP) powder, hybrid hydroxyapatite-chitosan (HAp-CTS) material in the form of powder and granules (as aggregates), and the polysaccharides sodium alginate (SA) or hydroxypropyl methylcellulose (HPMC). The liquid/gel phase in the studied materials constituted a citrus pectin gel. The influence of SA or HPMC on the setting reaction, microstructure, mechanical as well as biological properties of biomicroconcretes was investigated. Studies revealed that manufactured cement pastes were characterized by high plasticity and cohesion. The dual setting system of developed biomicroconcretes, achieved through α-TCP setting reaction and polymer crosslinking, resulted in a higher compressive strength. Material with the highest content of sodium alginate possessed the highest mechanical strength (~17 MPa), whereas the addition of hydroxypropyl methylcellulose led to a subtle compressive strength decrease. The obtained biomicroconcretes were chemically stable and characterized by a high bioactive potential. The novel biomaterials with favorable physicochemical and biological properties can be prosperous materials for filling bone tissue defects of any shape and size.
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Aytac Z, Dubey N, Daghrery A, Ferreira JA, de Souza Araújo IJ, Castilho M, Malda J, Bottino MC. Innovations in Craniofacial Bone and Periodontal Tissue Engineering - From Electrospinning to Converged Biofabrication. Int Mater Rev 2021; 67:347-384. [PMID: 35754978 PMCID: PMC9216197 DOI: 10.1080/09506608.2021.1946236] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 06/11/2021] [Indexed: 06/02/2023]
Abstract
From a materials perspective, the pillars for the development of clinically translatable scaffold-based strategies for craniomaxillofacial (CMF) bone and periodontal regeneration have included electrospinning and 3D printing (biofabrication) technologies. Here, we offer a detailed analysis of the latest innovations in 3D (bio)printing strategies for CMF bone and periodontal regeneration and provide future directions envisioning the development of advanced 3D architectures for successful clinical translation. First, the principles of electrospinning applied to the generation of biodegradable scaffolds are discussed. Next, we present on extrusion-based 3D printing technologies with a focus on creating scaffolds with improved regenerative capacity. In addition, we offer a critical appraisal on 3D (bio)printing and multitechnology convergence to enable the reconstruction of CMF bones and periodontal tissues. As a future outlook, we highlight future directions associated with the utilization of complementary biomaterials and (bio)fabrication technologies for effective translation of personalized and functional scaffolds into the clinics.
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Affiliation(s)
- Zeynep Aytac
- Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, Michigan, United States
| | - Nileshkumar Dubey
- Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, Michigan, United States
| | - Arwa Daghrery
- Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, Michigan, United States
| | - Jessica A. Ferreira
- Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, Michigan, United States
| | - Isaac J. de Souza Araújo
- Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, Michigan, United States
| | - Miguel Castilho
- Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Jos Malda
- Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Marco C. Bottino
- Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, School of Dentistry, Ann Arbor, Michigan, United States
- Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, Michigan, United States
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8
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Yuan Z, Bi J, Wang W, Sun X, Wang L, Mao J, Yang F. Synthesis and properties of Sr 2+ doping α-tricalcium phosphate at low temperature. J Appl Biomater Funct Mater 2021; 19:2280800021996999. [PMID: 33653180 DOI: 10.1177/2280800021996999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Strontium has been widely used in bone repair materials due to its roles in promoting osteoclast apoptosis and enhancing osteoblast proliferation. In this work, synthesis and the effects of Sr2+ doping α-tricalcium phosphate at low-temperature was studied. The setting time and the mechanical properties of α-tricalcium phosphate were controlled by varying the content of Sr2+. The synthesized compounds were evaluated by XRD, SEM, XPS, setting time, compressive strength, SBF immersion, and colorimetric CCK-8 assay. The results showed that Sr2+ can improve the compressive strength and cell activity of calcium phosphate bone cement.
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Affiliation(s)
- Zhen Yuan
- Key Laboratory of Liquid-Solid Structure Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.,Shandong Provincial Key Laboratory of Engineering Ceramics, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China
| | - Jianqiang Bi
- Key Laboratory of Liquid-Solid Structure Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.,Shandong Provincial Key Laboratory of Engineering Ceramics, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China
| | - Weili Wang
- Key Laboratory of Liquid-Solid Structure Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.,Shandong Provincial Key Laboratory of Engineering Ceramics, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China
| | - Xiaoning Sun
- Key Laboratory of Liquid-Solid Structure Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.,Shandong Provincial Key Laboratory of Engineering Ceramics, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China
| | - Lu Wang
- Key Laboratory of Liquid-Solid Structure Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.,Shandong Provincial Key Laboratory of Engineering Ceramics, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China
| | - Junjie Mao
- Key Laboratory of Liquid-Solid Structure Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.,Shandong Provincial Key Laboratory of Engineering Ceramics, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China
| | - Fushuai Yang
- Key Laboratory of Liquid-Solid Structure Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.,Shandong Provincial Key Laboratory of Engineering Ceramics, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China
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Salas-Ramirez M, Tran-Gia J, Gbureck U, Kosmala A, Lassmann M. Quantification of the trabecular bone volume fraction for bone marrow dosimetry in molecular radiotherapy by using a dual-energy (SPECT/)CT. Phys Med Biol 2019; 64:205014. [PMID: 31519000 DOI: 10.1088/1361-6560/ab4476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A complete characterization of spongiosa (bone marrow plus trabecular bone) is required to calculate the absorbed dose to active bone marrow. Due to the complex microanatomy, it is necessary to apply non-conventional imaging methods in nuclear medicine. The aim of this study is validating a phantomless quantification method using dual-energy quantitative computed tomography (DEQCT) for the quantification of trabecular bone volume fraction for bone marrow dosimetry in molecular radiotherapy. First, a phantomless quantification method (mass fraction method) based on x-ray beam and detector sensitivity was validated in an integrated dual energy SPECT/CT and in a dual source computed tomography (DSCT) system for comparison. The validation was performed in a phantom consisting of different water, fat and hydroxyapatite compositions. Moreover, the European spine phantom (ESP) was used to simulate the spine geometry. Bone mineral content (BMC) of the whole vertebra and bone mineral density (BMD) in the spongiosa region of each phantom vertebra were measured using DEQCT and dual energy x-ray absorptiometry (DEXA). Lastly, BMC was measured in a patient using DEQCT and DEXA. Measured values of hydroxyapatite fraction and nominal values in the homemade phantom showed a good correlation. The relative error remained below 14.2%. Quantification of BMC (in whole vertebra) and BMD (in spongiosa) in the ESP showed a good agreement between measured values and nominal values. The relative error remained between 0.7% and 7.5% for BMCSPECT/CT, 1.1% and 7.7% for BMCDSCT, 5.4% and 32.0 for BMDSPECT/CT, and 59.4% and 10.0% for BMDDSCT. Quantification of BMC in lumbar vertebrae 1 and 2 of a patient showed relative errors of 7.6% and -8.4% between DEXA and DSCT. Our study shows that DEQCT using a mass fraction method (phantomless) enables quantification of hydroxyapatite in a clinical nuclear medicine setting. An overestimation of the hydroxyapatite volume fraction was observed in all quantified regions, in particular in the spongiosa region of ESP. This result might be related to insufficient information about the x-ray spectra and the detector sensitivity function.
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Dziadek M, Kudlackova R, Zima A, Slosarczyk A, Ziabka M, Jelen P, Shkarina S, Cecilia A, Zuber M, Baumbach T, Surmeneva MA, Surmenev RA, Bacakova L, Cholewa‐Kowalska K, Douglas TEL. Novel multicomponent organic–inorganic WPI/gelatin/CaP hydrogel composites for bone tissue engineering. J Biomed Mater Res A 2019; 107:2479-2491. [DOI: 10.1002/jbm.a.36754] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 07/04/2019] [Accepted: 07/08/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Michal Dziadek
- Department of Glass Technology and Amorphous CoatingsAGH University of Science and Technology Krakow Poland
- Department of Ceramics and RefractoriesAGH University of Science and Technology Krakow Poland
- Engineering DepartmentLancaster University Lancaster UK
| | - Radmila Kudlackova
- Engineering DepartmentLancaster University Lancaster UK
- Institute of PhysiologyCzech Academy of Sciences Prague Czech Republic
| | - Aneta Zima
- Department of Ceramics and RefractoriesAGH University of Science and Technology Krakow Poland
| | - Anna Slosarczyk
- Department of Ceramics and RefractoriesAGH University of Science and Technology Krakow Poland
| | - Magdalena Ziabka
- Department of Ceramics and RefractoriesAGH University of Science and Technology Krakow Poland
| | - Piotr Jelen
- Department of Silicate Chemistry and Macromolecular CompoundsAGH University of Science and Technology Krakow Poland
| | - Svetlana Shkarina
- Research Center Physical Materials Science and Composite MaterialsNational Research Tomsk Polytechnic University Tomsk Russian Federation
| | - Angelica Cecilia
- Institute for Photon Science and Synchrotron RadiationKarlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
| | - Marcus Zuber
- Institute for Photon Science and Synchrotron RadiationKarlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
- Laboratory for Applications of Synchrotron RadiationKarlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
| | - Tilo Baumbach
- Institute for Photon Science and Synchrotron RadiationKarlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
- Laboratory for Applications of Synchrotron RadiationKarlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
| | - Maria A. Surmeneva
- Research Center Physical Materials Science and Composite MaterialsNational Research Tomsk Polytechnic University Tomsk Russian Federation
| | - Roman A. Surmenev
- Research Center Physical Materials Science and Composite MaterialsNational Research Tomsk Polytechnic University Tomsk Russian Federation
| | - Lucie Bacakova
- Institute of PhysiologyCzech Academy of Sciences Prague Czech Republic
| | - Katarzyna Cholewa‐Kowalska
- Department of Glass Technology and Amorphous CoatingsAGH University of Science and Technology Krakow Poland
| | - Timothy E. L. Douglas
- Engineering DepartmentLancaster University Lancaster UK
- Materials Science Institute (MSI)Lancaster University Lancaster UK
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11
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Brueckner T, Heilig P, Jordan MC, Paul MM, Blunk T, Meffert RH, Gbureck U, Hoelscher-Doht S. Biomechanical Evaluation of Promising Different Bone Substitutes in a Clinically Relevant Test Set-Up. Materials (Basel) 2019; 12:ma12091364. [PMID: 31035473 PMCID: PMC6540007 DOI: 10.3390/ma12091364] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/20/2019] [Accepted: 04/23/2019] [Indexed: 12/02/2022]
Abstract
(1) Background: Bone substitutes are essential in orthopaedic surgery to fill up large bone defects. Thus, the aim of the study was to compare diverse bone fillers biomechanically to each other in a clinical-relevant test set-up and to detect differences in stability and handling for clinical use. (2) Methods: This study combined compressive strength tests and screw pullout-tests with dynamic tests of bone substitutes in a clinical-relevant biomechanical fracture model. Beyond well-established bone fillers (ChronOSTM Inject and Graftys® Quickset), two newly designed bone substitutes, a magnesium phosphate cement (MPC) and a drillable hydrogel reinforced calcium phosphate cement (CPC), were investigated. (3) Results: The drillable CPC revealed a comparable displacement of the fracture and maximum load to its commercial counterpart (Graftys® Quickset) in the clinically relevant biomechanical model, even though compressive strength and screw pullout force were higher using Graftys®. (4) Conclusions: The in-house-prepared cement allowed unproblematic drilling after replenishment without a negative influence on the stability. A new, promising bone substitute is the MPC, which showed the best overall results of all four cement types in the pure material tests (highest compressive strength and screw pullout force) as well as in the clinically relevant fracture model (lowest displacement and highest maximum load). The low viscosity enabled a very effective interdigitation to the spongiosa and a complete filling up of the defect, resulting in this demonstrated high stability. In conclusion, the two in-house-developed bone fillers revealed overall good results and are budding new developments for clinical use.
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Affiliation(s)
- Theresa Brueckner
- Department for Functional Materials in Medicine and Dentistry, University of Wuerzburg, Pleicherwall 2, 97070 Wuerzburg, Germany.
| | - Philipp Heilig
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Clinics of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany.
| | - Martin Cornelius Jordan
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Clinics of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany.
| | - Mila Marie Paul
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Clinics of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany.
| | - Torsten Blunk
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Clinics of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany.
| | - Rainer Heribert Meffert
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Clinics of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany.
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Wuerzburg, Pleicherwall 2, 97070 Wuerzburg, Germany.
| | - Stefanie Hoelscher-Doht
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Clinics of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany.
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Myszka B, Hurle K, Zheng K, Wolf SE, Boccaccini AR. Mechanical improvement of calcium carbonate cements by in situ HEMA polymerization during hardening. J Mater Chem B 2019. [DOI: 10.1039/c9tb00237e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The brittleness of calcium carbonate-based cements, which currently impedes their exploitation, can be overcome by a straightforward polymer-reinforcement strategy.
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Affiliation(s)
- Barbara Myszka
- Institute of Biomaterials
- Friedrich-Alexander University Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Katrin Hurle
- GeoZentrum Nordbayern – Mineralogy
- Friedrich-Alexander University Erlangen-Nürnberg (FAU)
- 91054 Erlangen
- Germany
| | - Kai Zheng
- Institute of Biomaterials
- Friedrich-Alexander University Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Stephan E. Wolf
- Institute of Glass and Ceramics
- Friedrich-Alexander University Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Interdisciplinary Center for Functional Particle Systems (FPS)
| | - Aldo R. Boccaccini
- Institute of Biomaterials
- Friedrich-Alexander University Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Interdisciplinary Center for Functional Particle Systems (FPS)
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Rödel M, Teßmar J, Groll J, Gbureck U. Tough and Elastic α-Tricalcium Phosphate Cement Composites with Degradable PEG-Based Cross-Linker. Materials (Basel) 2018; 12:E53. [PMID: 30586905 DOI: 10.3390/ma12010053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 11/16/2022]
Abstract
Dual setting cements composed of an in situ forming hydrogel and a reactive mineral phase combine high compressive strength of the cement with sufficient ductility and bending strength of the polymeric network. Previous studies were focused on the modification with non-degradable hydrogels based on 2-hydroxyethyl methacrylate (HEMA). Here, we describe the synthesis of suitable triblock degradable poly(ethylene glycol)-poly(lactide) (PEG-PLLA) cross-linker to improve the resorption capacity of such composites. A study with four different formulations was established. As reference, pure hydroxyapatite (HA) cements and composites with 40 wt% HEMA in the liquid cement phase were produced. Furthermore, HEMA was modified with 10 wt% of PEG-PLLA cross-linker or a test series containing only 25% cross-linker was chosen for composites with a fully degradable polymeric phase. Hence, we developed suitable systems with increased elasticity and 5–6 times higher toughness values in comparison to pure inorganic cement matrix. Furthermore, conversion rate from α-tricalcium phosphate (α-TCP) to HA was still about 90% for all composite formulations, whereas crystal size decreased. Based on this material development and advancement for a dual setting system, we managed to overcome the drawback of brittleness for pure calcium phosphate cements.
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Abstract
BACKGROUND Bone cement plays an important role in the treatment of osteoporotic vertebral compression fractures. Calcium phosphate cement (CPC) is a potential alternative to poly(methyl methacrylate), currently the gold standard of bone cements. However, the poor mechanical properties of CPCs limit their clinical applications. The objective of this study was to develop reinforced CPCs for minimally invasive orthopedic surgeries by compositing silk fibroin (SF) with α-tricalcium phosphate. METHODS SF solution was treated with calcium hydroxide and characterized by Zeta potential analyzer and Fourier transform infrared spectroscopy. The alkaline-treated SF (tSF) was com-posited with α-tricalcium phosphate to obtain tSF/CPC composite, which was characterized using mechanical tests, scanning electron microscopy, handling property and biocompatibility tests, and sheep vertebral augmentation tests. RESULTS Upon treatment with calcium hydroxide, larger SF particles and more abundant negative charge appeared in tSF solution. The tSF/CPCs exhibited a compact structure, which consisted of numerous SF -CPC clusters and needle-like hydroxyapatite (HAp) crystals. In addition, high transition rate of HAp in tSF/CPCs was achieved. As a result, the mechanical property of tSF/ CPC composite cements was enhanced remarkably, with the compressive strength reaching as high as 56.3±1.1 MPa. Moreover, the tSF/CPC cements showed good injectability, anti-washout property, and decent biocompatibility. The tSF/CPCs could be used to augment defected sheep vertebrae to restore their mechanical strength. CONCLUSION tSF/CPC may be a promising composite bone cement for minimally invasive orthopedic surgeries.
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Affiliation(s)
- Muli Hu
- Department of Polymer Science, College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, China
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
| | - Zhiwei He
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Fengxuan Han
- Department of Polymer Science, College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, China
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
| | - Chen Shi
- Department of Biomedical Engineering, National University of Singapore, Singapore, Singapore
| | - Pinghui Zhou
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
| | - Feng Ling
- Department of Polymer Science, College of Chemistry, Chemical Engineering and Materials Science, Orthopaedic Institute, Soochow University, Suzhou, China
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
| | - Xuesong Zhu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
| | - Huilin Yang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
| | - Bin Li
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China,
- China Orthopaedic Regenerative Medicine Group (CORMed), Hangzhou, China,
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Rödel M, Teßmar J, Groll J, Gbureck U. Highly flexible and degradable dual setting systems based on PEG-hydrogels and brushite cement. Acta Biomater 2018; 79:182-201. [PMID: 30149213 DOI: 10.1016/j.actbio.2018.08.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/17/2018] [Accepted: 08/21/2018] [Indexed: 01/21/2023]
Abstract
With respect to the composition of natural bone, we established a degradable dual setting system of different poly(ethylene glycol) (PEG)-based hydrogels combined with a brushite cement. The idea was to reinforce the inorganic calcium phosphate mineral phase with an organic, polymeric phase to alter the cement's properties towards ductility and elasticity. Extremely flexible samples were produced via this dual setting approach with a fully reversible elasticity of the samples containing high molecular weight PEG-based hydrogel precursors. Using the decalcifying agent EDTA, the whole inorganic phase was dissolved due to Ca2+-complexation and dimensionally stable hydrogels were obtained, indicating a homogenous polymeric phase within the composites. This was also confirmed by SEM-analysis, where no discontinuities or agglomerations of the phase were observed. Additional XRD-measurements proved a significant influence of the coherent polymeric matrix on the conversion from β-TCP/MCPA to brushite with a decrease in signal intensity. The results confirmed a parallelly running process of setting reaction and gelation without an inhibition of the conversion to brushite and the formation of interpenetrating networks of hydrogel and cement. The strengths of this newly developed dual setting system are based on the material degradability as well as flexibility, which can be a promising tool for bone regeneration applications in non-load bearing craniomaxillofacial defects. STATEMENT OF SIGNIFICANCE Brushite based calcium phosphate cements (CPCs) are known as bone replacement materials, which degrade in vivo and are replaced by native bone. However, the pure inorganic material shows a brittle fracture behavior. Here, the addition of a polymeric phase can influence the mechanical properties to create more ductile and flexible materials. This polymeric phase should ideally form during cement setting by a polymerization reaction to achieve high polymer loads without altering cement viscosity and it should be degradable in vivo similar to the cement itself. Therefore, we developed a dual setting system based on simultaneous cement setting of brushite and lactide modified poly(ethylene glycol) dimethacrylate (PEG-PLLA-DMA)-based hydrogel. It was evident that the gels form a continuous phase within the cement after radical polymerization with a strong reduction of cement brittleness.
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Affiliation(s)
- Michaela Rödel
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute (BPI), Julius Maximilians University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Jörg Teßmar
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute (BPI), Julius Maximilians University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Jürgen Groll
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute (BPI), Julius Maximilians University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute (BPI), Julius Maximilians University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany.
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Hurle K, Christel T, Gbureck U, Moseke C, Neubauer J, Goetz-Neunhoeffer F. Reaction kinetics of dual setting α-tricalcium phosphate cements. J Mater Sci Mater Med 2016; 27:1. [PMID: 26610924 DOI: 10.1007/s10856-015-5616-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 10/28/2015] [Indexed: 06/05/2023]
Abstract
Addition of ductile polymers to calcium-deficient hydroxyapatite (CDHA)-forming bone cements based on α-tricalcium phosphate (α-TCP) is a promising approach to improve the mechanical performance of α-TCP cements and extend their application to load-bearing defects, which is else impeded by the brittleness of the hardened cement. One suitable polymer is poly-(2-hydroxyethylmethacrylate) (p-HEMA), which forms during cement setting by radical polymerisation of the monomer. In this study the hydration kinetics and the mechanical performance of α-TCP cements modified with addition of different HEMA concentrations (0-50 wt% in the cement liquid) was investigated by quantitative in situ XRD and four-point bending tests. Morphology of CDHA crystals was monitored by scanning electron microscopy. The hydration of α-TCP to CDHA was increasingly impeded and the visible crystal size of CDHA increasingly reduced with increasing HEMA concentration. Modification of the cements by adding 50 wt% HEMA to the cement liquid changed the brittle performance of the hardened cement to a pseudoplastic behaviour, reduced the flexural modulus and increased the work of fracture, while lower HEMA concentrations had no significant effect on these parameters. In such a composite, the extent of CDHA formation was considerably reduced (34.0 ± 1.8 wt% CDHA with 50 % HEMA compared to 54.1 ± 2.4 wt% CDHA in the reference formed after 48 h), while the general reaction kinetics were not changed. In conclusion, while the extent of CDHA formation was decreased, the mechanical properties were noticeably improved by addition of HEMA. Hence, α-TCP/HEMA composites might be suitable for application in some load-bearing defects and have adequate properties for mechanical treatment after implantation, like insertion of screws.
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Affiliation(s)
- Katrin Hurle
- GeoZentrum Nordbayern - Mineralogy, Friedrich-Alexander-University of Erlangen-Nuremberg, Schlossgarten 5a, 91054, Erlangen, Germany.
| | - Theresa Christel
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Claus Moseke
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Juergen Neubauer
- GeoZentrum Nordbayern - Mineralogy, Friedrich-Alexander-University of Erlangen-Nuremberg, Schlossgarten 5a, 91054, Erlangen, Germany
| | - Friedlinde Goetz-Neunhoeffer
- GeoZentrum Nordbayern - Mineralogy, Friedrich-Alexander-University of Erlangen-Nuremberg, Schlossgarten 5a, 91054, Erlangen, Germany
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Abstract
Calcium phosphate biocements based on calcium phosphate chemistry are well-established biomaterials for the repair of non-load bearing bone defects due to the brittle nature and low flexural strength of such cements. This article features reinforcement strategies of biocements based on various intrinsic or extrinsic material modifications to improve their strength and toughness. Altering particle size distribution in conjunction with using liquefiers reduces the amount of cement liquid necessary for cement paste preparation. This in turn decreases cement porosity and increases the mechanical performance, but does not change the brittle nature of the cements. The use of fibers may lead to a reinforcement of the matrix with a toughness increase of up to two orders of magnitude, but restricts at the same time cement injection for minimal invasive application techniques. A novel promising approach is the concept of dual-setting cements, in which a second hydrogel phase is simultaneously formed during setting, leading to more ductile cement–hydrogel composites with largely unaffected application properties.
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Abstract
In early 1980s, researchers discovered self-setting calcium orthophosphate cements, which are bioactive and biodegradable grafting bioceramics in the form of a powder and a liquid. After mixing, both phases form pastes, which set and harden forming either a non-stoichiometric calcium deficient hydroxyapatite or brushite. Since both of them are remarkably biocompartible, bioresorbable and osteoconductive, self-setting calcium orthophosphate formulations appear to be promising bioceramics for bone grafting. Furthermore, such formulations possess excellent molding capabilities, easy manipulation and nearly perfect adaptation to the complex shapes of bone defects, followed by gradual bioresorption and new bone formation. In addition, reinforced formulations have been introduced, which might be described as calcium orthophosphate concretes. The discovery of self-setting properties opened up a new era in the medical application of calcium orthophosphates and many commercial trademarks have been introduced as a result. Currently such formulations are widely used as synthetic bone grafts, with several advantages, such as pourability and injectability. Moreover, their low-temperature setting reactions and intrinsic porosity allow loading by drugs, biomolecules and even cells for tissue engineering purposes. In this review, an insight into the self-setting calcium orthophosphate formulations, as excellent bioceramics suitable for both dental and bone grafting applications, has been provided.
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