3D printed bioresorbable scaffolds for articular cartilage tissue engineering: a comparative study between neat polycaprolactone (PCL) and poly(lactide-b-ethylene glycol) (PLA-PEG) block copolymer

Biomed Mater. 2022 Jun 27;17(4). doi: 10.1088/1748-605X/ac78b7.

Abstract

This work identifies and describes different material-scaffold geometry combinations for cartilage tissue engineering (CTE). Previously reported potentially interesting scaffold geometries were tuned and printed using bioresorbable polycaprolactone and poly(lactide-b-ethylene) block copolymer. Medical grades of both polymers were 3D printed with fused filament fabrication technology within an ISO 7 classified cleanroom. Resulting scaffolds were then optically, mechanically and biologically tested. Results indicated that a few material-scaffold geometry combinations present potential for excellent cell viability as well as for an enhance of the chondrogenic properties of the cells, hence suggesting their suitability for CTE applications.

Keywords: 3D printing; bioresorbable polymers; cartilage; scaffolds; tissue engineering.

MeSH terms

  • Absorbable Implants
  • Cartilage, Articular*
  • Dioxanes
  • Ethylene Glycol
  • Polyesters
  • Polymers
  • Printing, Three-Dimensional
  • Tissue Engineering* / methods
  • Tissue Scaffolds

Substances

  • Dioxanes
  • Polyesters
  • Polymers
  • polycaprolactone
  • dilactide
  • Ethylene Glycol