Dense Alumina and Zirconia ceramics have optimal physical-mechanical features for load bearing prosthetic applications. However, an improvement at the ceramic/bone interface, namely of the bioactivity of the ceramic, is still required. The aim of this study is to develop a new generation of glass as bioactive coating of dense Al2O3-ZrO2 composites. Composition of the glass and processing conditions were optimized. On the coated samples, the chemistry, the mechanical performances, the microstructure and the adhesion at the ceramic/coating interface were analyzed. Besides, the in-vitro bioactive responses, by incubation of osteoblast-like cells on the coated samples, were evaluated after 24 hours and after 72 hours.
Surface coatings of bioactive glazes on hight strength ceramic composites
2008
Abstract
Dense Alumina and Zirconia ceramics have optimal physical-mechanical features for load bearing prosthetic applications. However, an improvement at the ceramic/bone interface, namely of the bioactivity of the ceramic, is still required. The aim of this study is to develop a new generation of glass as bioactive coating of dense Al2O3-ZrO2 composites. Composition of the glass and processing conditions were optimized. On the coated samples, the chemistry, the mechanical performances, the microstructure and the adhesion at the ceramic/coating interface were analyzed. Besides, the in-vitro bioactive responses, by incubation of osteoblast-like cells on the coated samples, were evaluated after 24 hours and after 72 hours.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
