Production of Bioactive Various Lattices as an Artificial Bone Tissue by Digital Light Processing 3D Printing

This study aims to find which lattice type and which ingredient is the best for the bone lattice for future grafting operations. Four types of lattice parts with micro and high porosity were designed to resemble the human bone structure and reach its light-weight and high surface area properties. Hydroxyapatite (HA) and tricalcium phosphate (TCP) were used in the photopolymer resin mixture for (Digital Light Processing) DLP 3D printing to give high bioactivity capability to the parts. In conclusion, microporosity HA- and TCP-doped parts were printed successfully with the DLP technique. Bioactivity tests were carried out with parts that were soaked in simulated body fluid (SBF). There is no significant weight difference in lattice parts in the time. Four weeks are sufficient time for the test. End of 2 weeks, calcium phosphate particles with around a diameter of 50-75 mu m, and end of 4 weeks, calcium phosphate particles with around a diameter of 80-225 mu m were observed. Apatite precipitation areas were grown on the surface in time. SEM and XRD results indicate that HA-doped and TCP-doped specimens are bioactive. A more mass increase was observed in the HA-doped specimen compared to the TCP-doped specimen.