3D Printing with advanced ceramic materials.
Tutor / director / evaluatorRoa Rovira, Joan Josep
Document typeBachelor thesis
Rights accessOpen Access
Due to the aging of the population and the need for maintaining masticatory functionality during their life span, the number of dental replacements is growing, substituting natural teeth by artificial crows, bridges and implants. In fact, in recent years the number of teeth replacement has increased, and one of the relatively new and preferred dental materials is the tetragonal zirconia doped with 3% mol yttria (3Y-ZrO2, also referred to us like 3Y-TZP). This material is in vogue due to its aesthetic appearance, bio-inertness and mechanical properties for dental crowns and bridges (with a porcelain veneer). However, until recently scaffold design was limited to conventional manufacturing methods (i.e., starting from a bulk ceramic body and subtracting the material step by step in order to generate the scaffold’s final outer shape). Nowadays, new technologies enable adding up complex three-dimensional structures layer by layer. Powder based rapid prototyping technique in such a versatile method with unique flexibility in material and geometry. In this work, microstructural mixtures of 3Y-TZP and CeO2 based ceramic materials were design and produced by Rapid Prototyping (3D printing geometries) with the main goal to evaluate a possible correlation between their microstructural and mechanical properties. The results were compared and discussed in terms of density, porosity, grain size, absorbance, transmittance, reflectance, hardness and cyclic indentation as a function of the sintering temperature. A detailed characterization of the microstructure was performed by Confocal Laser Microscopy and Field Emission Scanning Electron Microscopy