In vivo characterization of 3D-printed polycaprolactone-hydroxyapatite scaffolds with Voronoi design to advance the concept of scaffold-guided bone regeneration

Autor: Markus Laubach, Buddhi Herath, Nathalie Bock, Sinduja Suresh, Siamak Saifzadeh, Bronwin L. Dargaville, Jacqui McGovern, Marie-Luise Wille, Dietmar W. Hutmacher, Flavia Medeiros Savi
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Bioengineering and Biotechnology, Vol 11 (2023)
Druh dokumentu: article
ISSN: 2296-4185
DOI: 10.3389/fbioe.2023.1272348
Popis: Three-dimensional (3D)-printed medical-grade polycaprolactone (mPCL) composite scaffolds have been the first to enable the concept of scaffold-guided bone regeneration (SGBR) from bench to bedside. However, advances in 3D printing technologies now promise next-generation scaffolds such as those with Voronoi tessellation. We hypothesized that the combination of a Voronoi design, applied for the first time to 3D-printed mPCL and ceramic fillers (here hydroxyapatite, HA), would allow slow degradation and high osteogenicity needed to regenerate bone tissue and enhance regenerative properties when mixed with xenograft material. We tested this hypothesis in vitro and in vivo using 3D-printed composite mPCL-HA scaffolds (wt 96%:4%) with the Voronoi design using an ISO 13485 certified additive manufacturing platform. The resulting scaffold porosity was 73% and minimal in vitro degradation (mass loss
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