Mathematical approach to design 3D scaffolds for the 3D printable bone implant

• Autorzy: Wojnicz Wiktoria , Augustyniak Marek , Borzyszkowski Piotr

Identyfikatory

DOI

10.1016/j.bbe.2021.05.001

• Języki publikacji: EN

Abstrakty

EN

This work demonstrates that an artificial scaffold structure can be designed to exhibit mechanical properties close to the ones of real bone tissue, thus highly reducing the stress-shielding phenomenon. In this study the scan of lumbar vertebra fragment was reproduced to create a numerical 3D model (this model was called the reference bone sample). New nine 3D scaffold samples were designed and their numerical models were created. Using the finite element analysis, a static compression test was performed to assess the effective Young modulus of each tested sample. Also, two important metrics of each sample were assessed: relative density and surface area. Each new designed 3D scaffold sample was analyzed by considering two types of material properties: metal alloy properties (Ti-6Al-4V) and ABS polymer properties. Numerical analysis results of this study confirm that 3D scaffold used to design a periodic structure, either based on interconnected beams (A, B, C, D, E and F units) or made by removing regular shapes from base solid cubes (G, H, I units), can be refined to obtain mechanical properties similar to the ones of trabecular bone tissue. Experimental validation was performed on seven scaffolds (A, B, C, D, E, F and H units) printed from ABS material without any support materials by using Fused Deposition Modeling (FMD) technology. Results of experimental Young modulus of each printed scaffold are also presented and discussed.

Słowa kluczowe

EN

bone implant; lattice structure; FEM; 3D printing; scaffold; FMD

PL

implant kości; struktura kratowa; FEM; druk 3D; FMD

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2021
• Tom: Vol. 41, no. 2
• Strony: 667--678
• Opis fizyczny: Bibliogr. 44 poz., rys., tab., wykr.

Twórcy

autor

Wojnicz Wiktoria

• Faculty of Mechanical Engineering and Ship Technology, Gdansk University of Technology, str. G. Narutowicza 11/12, 80-233 Gdansk, Poland

autor

Augustyniak Marek

• Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Gdansk, Poland

autor

Borzyszkowski Piotr

• Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Gdansk, Poland

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).