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International Journal of Bioprinting 3D-bioprinted hydrogel for pulp regeneration

Figure 2. Characterization and optimization of the DLP-based 3D-bioprinted DPGC. (A) Fluorescence micrographs of the DPGC with different dextran
concentrations at (i) 5%, (ii) 10%, and (iii) 15% w/v. (B) Pore size distribution of dextran droplets dispersed in the GelMA phase with different dextran
concentrations at 5% and 10%. One hundred random droplets in each case were analyzed. (C) Stress–strain curves of the 3D-bioprinted DPGCs with
different dextran concentrations at 5% and 10%, compared to bulk hydrogels with 0% dextran (*p < 0.05 for 0% dextran group vs. 5%, 10%, and 15%
dextran group at specified strain points). (D) Micrographs showing size stability of 3D-printed DPGC with 10% dextran and the bulk hydrogel with 0%
dextran during 48-h incubation. White scale bar: 500 μm; black scale bar: 200 μm. (E) SEM micrographs showing the 3D-printed DPGC with a dextran
concentration of 10%.

Volume 10 Issue 3 (2024) 307 doi: 10.36922/ijb.1790