A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Novel additive manufactured scaffolds for tissue engineered trachea research
Tekijät: Makitie AA, Korpela J, Elomaa L, Reivonen M, Kokkari A, Malin M, Korhonen H, Wang XH, Salo J, Sihvo E, Salmi M, Partanen J, Paloheimo KS, Tuomi J, Narhi T, Seppala J
Kustantaja: INFORMA HEALTHCARE
Julkaisuvuosi: 2013
Journal: Acta Oto-Laryngologica
Tietokannassa oleva lehden nimi: ACTA OTO-LARYNGOLOGICA
Lehden akronyymi: ACTA OTO-LARYNGOL
Numero sarjassa: 4
Vuosikerta: 133
Numero: 4
Aloitussivu: 412
Lopetussivu: 417
Sivujen määrä: 6
ISSN: 0001-6489
DOI: https://doi.org/10.3109/00016489.2012.761725
Tiivistelmä
Conclusions: This study demonstrates proof of concept for controlled manufacturing methods that utilize novel tailored biopolymers (3D photocuring technology) or conventional bioresorbable polymers (fused deposition modeling, FDM) for macroscopic and microscopic geometry control. The manufactured scaffolds could be suitable for tissue engineering research. Objectives: To design novel trachea scaffold prototypes for tissue engineering purposes, and to fabricate them by additive manufacturing. Methods: A commercial 3D model and CT scans of a middle-aged man were obtained for geometrical observations and measurements of human trachea. Model trachea scaffolds with variable wall thickness, interconnected pores, and various degrees of porosity were designed. Photocurable polycaprolactone (PCL) polymer was used with 3D photocuring technology. Thermoplastic polylactide (PLA) and PCL were used with FDM. Cell cultivations were performed for biocompatibility studies. Results: Scaffolds of various sizes and porosities were successfully produced. Both thermoplastic PLA and PCL and photocurable PCL could be used effectively with additive manufacturing technologies to print high-quality tubular porous biodegradable structures. Optical microscopic and SEM images showed the viability of cells. The cells were growing in multiple layers, and biocompatibility of the structures was shown.
Conclusions: This study demonstrates proof of concept for controlled manufacturing methods that utilize novel tailored biopolymers (3D photocuring technology) or conventional bioresorbable polymers (fused deposition modeling, FDM) for macroscopic and microscopic geometry control. The manufactured scaffolds could be suitable for tissue engineering research. Objectives: To design novel trachea scaffold prototypes for tissue engineering purposes, and to fabricate them by additive manufacturing. Methods: A commercial 3D model and CT scans of a middle-aged man were obtained for geometrical observations and measurements of human trachea. Model trachea scaffolds with variable wall thickness, interconnected pores, and various degrees of porosity were designed. Photocurable polycaprolactone (PCL) polymer was used with 3D photocuring technology. Thermoplastic polylactide (PLA) and PCL were used with FDM. Cell cultivations were performed for biocompatibility studies. Results: Scaffolds of various sizes and porosities were successfully produced. Both thermoplastic PLA and PCL and photocurable PCL could be used effectively with additive manufacturing technologies to print high-quality tubular porous biodegradable structures. Optical microscopic and SEM images showed the viability of cells. The cells were growing in multiple layers, and biocompatibility of the structures was shown.
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