Microstereolithography of oxide ceramics and composites for biomedical devices

Reference Presenter Authors
01-016 Anne Louise LERICHE LERICHE, A.L.(University of Valenciennes); Dehurtevent, M.(University of Lille); Shamary, S.(University of Valenciennes); Curto, H.(University of Valenciennes); Thuault, A.(University of Valenciennes); Hornez, J.(University of Valenciennes); Petit, F.(Belgian Ceramic Research Centre); CAMBIER, F.J.(Belgian Ceramic Research Center); Fernandes, M.(Universidade do Porto); Monteiro, F.J.(Instituto de Investigação e Inovação em Saúde da Universidade do Porto);

The current trend in medical devices is to make custom-made prosthesis to meet the needs at best of the patient. In this context, the microstereolithography technology is more and more used to fabricate bioceramic devices. Indeed, this technology allows the fabrication of a few number of small size complex shaped parts at very short time and makes it possible reliable restorations with accurate dimensions without waste of raw materials and without any milling step. In this talk, we will focus on the manufacturing of two medical devices: the dental crowns in dense alumina or zirconia and the porous calcium phosphate bone substitutes. Firstly, the impact of the manufactured layer orientation on the mechanical properties of alumina and zirconia parts for dental crown application will be described. For bone substitutes, it is well known that the morphology of the porosity of the scaffold strongly influences the cell invasion and differentiation. As the stereolithography allows the achievement of any shape porosity, porous calcium phosphate parts characterized by different shape and size porosities were fabricated and the influence of the porous architecture on cell invasion will be discussed. The rapid densification of these scaffolds by microwave sintering will be also presented.