Biodegradability of some collagen sponges reinforced with different bioceramics

Composite materials based on collagen matrix could have different properties in the case of reinforcement with different bioceramics. Not just the chemical composition of bioceramics used as reinforcement component have an influence on the composite properties, but also the microstructural aspects of bioceramics such as morphology, grain size and shape, homogeneity and distribution. We present in this paper the effect of the bioceramics type (tricalcium phosphate, hydroxyapatite) and ratio on the composite materials structure and the biodegradation properties of some collagen based composites obtained using the freeze-drying process. Also, we measure the porosity before made the biodegradation test using collagenase as medium and immersion in simulated body fluid in order to see the bioactivity properties.