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Characterization of Three-Dimensional Printed Composite Scaffolds Prepared with Different Fabrication Methods

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Języki publikacji
EN
Abstrakty
EN
An optimal method for composites preparation as an input to rapid prototyping fabrication of scaffolds with potential application in osteochondral tissue engineering is still needed. Scaffolds in tissue engineering applications play a role of constructs providing appropriate mechanical support with defined porosity to assist regeneration of tissue. The aim of the presented study was to analyze the influence of composite fabrication methods on scaffolds mechanical properties. The evaluation was performed on polycaprolactone (PCL) with 5 wt% beta-tricalcium phosphate (TCP) scaffolds fabricated using fused deposition modeling (FDM). Three different methods of PCL-TCP composite preparation: solution casting, particles milling, extrusion and injection were used to provide material for scaffold fabrication. The obtained scaffolds were investigated by means of scanning electron microscope, x-ray micro computed tomography, thermal gravimetric analysis and static material testing machine. All of the scaffolds had the same geometry (cylinder, 4×6 mm) and fiber orientation (0/60/120°). There were some differences in the TCP distribution and formation of the ceramic agglomerates in the scaffolds. They depended on fabrication method. The use of composites prepared by solution casting method resulted in scaffolds with the best combination of compressive strength (5.7±0.2 MPa) and porosity (48.5±2.7 %), both within the range of trabecular bone.
Twórcy
autor
  • Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska Str., 02-507 Warsaw, Poland
  • Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska Str., 02-507 Warsaw, Poland
autor
  • Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska Str., 02-507 Warsaw, Poland
  • Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska Str., 02-507 Warsaw, Poland
autor
  • Czestochowa University of Technology, Institute of Physics, 19 Armii Krajowej Av., 42-200 Czestochowa, Poland
autor
  • Czestochowa University of Technology, Institute of Materials Science and Engineering, 19 Armii Krajowej Av., 42-200 Czestochowa, Poland
  • Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Woloska Str., 02-507 Warsaw, Poland
Bibliografia
  • [1] R. Tadeusziewicz, P. Augustyniak, Basic Biomedical Engineering 2, AGH , Kraków 2009.
  • [2] W. Swieszkowski, Ho Saey Tuanb Barnabas, K.J. Kurzydlowski, D.W. Hutmacher, Repair and regeneration of osteochondral defects in the articular joints, Biomolecular Engineering 24, 5, 489-495 (2007).
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  • [11] D. W. Hutmacher, M. Sittinger, M. V. Risbud Scaffold-based tissue engineering: rationale for computer-aided design and solid free-form fabrication systems, Trends Biotechnol 22, 354-362 (2004).
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  • [14] L. Shor, S. Guceri, X. Wen, M. Gandhi, W. Sun Fabrication of three-dimensional polycaprolactone/hydroxyapatite tissue scaffolds and osteoblastâscaffold interactions in vitro, Biomaterials 28, 5291-5297 (2007).
  • [15] M. J. Mondrinos, R. Dembzynski, L. Lu, V. K. C. Byrapogu, D.M. Wootton, P.I. Lelkes, J. Zhou, Porogen-based solid freeform fabrication of polycaprolactoneâcalcium phosphate scaffolds for tissue engineering, Biomaterials 27, 25, 4399-4408 (2006).
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-bc58f861-ed47-4263-aa99-d81e5c27f352
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