Ceramics-Silikáty

Bone fractures and defects are prevalent in orthopaedics, and implant fixation of resin materials offers a promising alternative to metallic implants in biodegradability. This study investigates the design and fabrication of bone fixation plates using additive manufacturing with different structures. Plate models were designed in four groups: Octet Regular, Tesseract Regular, Voronoi S1, and Voronoi S2. Each plate group was also designed with different porosities (40%, 50%, 60%, and 70%). Two resins, PLA Pro and P-CROWN V3, were utilised to fabricate the plate’s specimens. Mechanical testing, including a three-point bending test, was conducted to evaluate the models. Thus, the force-deflection curve, maximum stress, and fracture energy were provided for each model. The results showed that porosity is dominant in the model’s mechanical behaviour. However, the architecture of models was not as effective as their porosity; it plays an essential role in their mechanical resistance. Then, the results were discussed in detail. Among the models examined in this study, the Voronoi sample (S1-40) plate exhibits higher strength than other models. This study provides valuable insights into designing and fabricating bone fixation plates with porous structures.