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Fabrication of bioactive tissue engineering scaffold for reconstructing calcified cartilage layer based on three-dimension printing technique / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences ; (6): 126-131, 2016.
Article in Chinese | WPRIM | ID: wpr-239611
ABSTRACT
<p><b>OBJECTIVE</b>To fabricate organic-inorganic composite tissue engineering scaffolds for reconstructing calcified cartilage layer based on three-dimensional (3D) printing technique.</p><p><b>METHODS</b>The scaffolds were developed by 3D-printing technique with highly bioactive calcium-magnesium silicate ultrafine particles of 1%, 3% and 5% of mass fraction, in which the organic phases were composed of type I collagen and sodium hyaluronate. The 3D-printed scaffolds were then crosslinked and solidified by alginate and CaCl₂ aerosol. The pore size and distribution of inorganic phase were observed with scanning electron microscope (SEM); the mechanical properties were tested with universal material testing machine, and the porosity of scaffolds was also measured.</p><p><b>RESULTS</b>Pore size was approximately (212.3 ± 34.2) μm with a porosity of (48.3 ± 5.9)%, the compressive modulus of the scaffolds was (7.2 ± 1.2) MPa, which was irrelevant to the percentage changes of calcium-magnesium silicate, the compressive modulus was between that of cartilage and subchondral bone.</p><p><b>CONCLUSION</b>The porous scaffolds for calcified cartilage layer have been successfully fabricated, which would be used for multi-layered composite scaffolds in osteochondral injury.</p>
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Materials Testing / Cartilage / Chemistry / Porosity / Tissue Engineering / Tissue Scaffolds / Bioprinting / Printing, Three-Dimensional / Methods Language: Chinese Journal: Journal of Zhejiang University. Medical sciences Year: 2016 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Materials Testing / Cartilage / Chemistry / Porosity / Tissue Engineering / Tissue Scaffolds / Bioprinting / Printing, Three-Dimensional / Methods Language: Chinese Journal: Journal of Zhejiang University. Medical sciences Year: 2016 Type: Article