3D inkjet printing of the zirconia ceramic implanted teeth

Three-dimensional zirconia ceramic teeth were successfully printed by the 3D inkjet printing method. The high permeability zirconia dental powder was used as raw material and a water-based suspension with a solid phase volume of 55 vol% was prepared as the ink of 3D inkjet printing. The properties of zirconia ceramic ink, printing filament and the optimal parameters of printing were investigated in detail. After sintering at 1500 degrees C for 4 h, the relative density, hardness value and transverse rupture strength of the sintered body were 98.5%, 14.4 +/- 0.1 GPa, and 520 +/- 20 MPa, respectively. The mechanical properties of the sintered sample reached the standard of ISO 13356:2015 (E). (C) 2019 2019 Elsevier B.V. All rights reserved.