@article{BlankenburgVinkeRiedeletal.2022, author = {Jennifer Blankenburg and Johannes Vinke and Bianca Riedel and Sergej Zankovic and Hagen Schmal and Michael Seidenstuecker}, title = {Alternative Geometries for 3D Bioprinting of Calcium Phosphate Cement as Bone Substitute}, series = {Biomedicines}, volume = {10}, number = {12}, publisher = {MDPI}, address = {Basel}, issn = {2227-9059}, doi = {10.3390/biomedicines10123242}, url = {https://nbn-resolving.org/urn:nbn:de:bsz:ofb1-opus4-66846}, pages = {1 -- 18}, year = {2022}, abstract = {In the literature, many studies have described the 3D printing of ceramic-based scaffolds (e.g., printing with calcium phosphate cement) in the form of linear structures with layer rotations of 90°, although no right angles can be found in the human body. Therefore, this work focuses on the adaptation of biological shapes, including a layer rotation of only 1°. Sample shapes were printed with calcium phosphate cement using a 3D Bioplotter from EnvisionTec. Both straight and wavy spokes were printed in a round structure with 12 layers. Depending on the strand diameter (200 and 250 µm needle inner diameter) and strand arrangement, maximum failure loads of 444.86 ± 169.39 N for samples without subsequent setting in PBS up to 1280.88 ± 538.66 N after setting in PBS could be achieved.}, language = {en} }