Abstract
The bio-ceramic coatings on metallic implants are proposed to be a solution for combining the mechanical properties of the metal with the necessarily bioactive character of the ceramic layer, leading to a better integration of the entire implant.In this paper, the determination of residual stresses in such systems by non-destructive methods is presented for a mock-up of an implant constituted by two different biomedical ceramic/metal systems: (i) titanium dental implants and (ii) porcelain crown. Stress distributions are reported in: (i) a thin hydroxyapatite coating (50μm) deposited by plasma-spray ceramic films on titanium alloy as well as (ii) a multilayer consisting of a layer (1.8mm) of glassy-ceramic and opaque ceramic (0.35mm), normally Porcelain- Fused- to- Metal on a palladium substrate (1.6mm).
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