Three-dimensional printing of porous load-bearing bioceramic scaffolds

E. Mancuso, N. Alharbi, O.A. Bretcanu, M. Marshall, M.A. Birch, A.W. McCaskie, K.W. Dalgarno

Research output: Contribution to journalArticle

14 Citations (Scopus)
42 Downloads (Pure)

Abstract

This article reports on the use of the binder jetting three-dimensional printing process combined with sintering to process bioceramic materials to form micro- and macroporous three-dimensional structures. Three different glass-ceramic formulations, apatite–wollastonite and two silicate-based glasses, have been processed using this route to create porous structures which have Young’s modulus equivalent to cortical bone and average bending strengths in the range 24–36 MPa. It is demonstrated that a range of macroporous geometries can be created with accuracies of ±0.25 mm over length scales up to 40 mm. Hot-stage microscopy is a valuable tool in the definition of processing parameters for the sintering step of the process. Overall, it is concluded that binder jetting followed by sintering offers a versatile process for the manufacture of load-bearing bioceramic components for bone replacement applications.
Original languageEnglish
Pages (from-to)575-585
Number of pages11
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume231
Issue number6
Early online date5 Jan 2017
DOIs
Publication statusPublished - Jun 2017

Keywords

  • Additive manufacturing
  • three-dimensional printing
  • bone scaffolds
  • bioceramics
  • bioactive glasses

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