Figure 1.

The poly(ε-caprolactone) (PCL) polymer and the PCL compounded with beta-tricalcium phosphate 20% (β-TCP 20%) composite polymer was printed according to the experimental setup shown in (A) and sterilised with a 2% peracetic acid solution. The PCL and β-TCP 20% printed samples were photochemically (B) and mechanically (C) characterised. The biocompatibility of the β-TCP 20% samples (D) was tested to show the effects of their interaction with preosteoblast cells. For this, the ability of the cells to adhere to the substrate (a), their cytoskeletal re-organisation (b), and the activity of cell metabolism (c) were assayed.