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Introduction: La Poliapatita® is a composite formed by hydroxyapatite (HAP-200), CaCO3 and polyvinyl acetate (POVIAc®). This composite it is been evaluated as a bone implant biomaterial and should be fulfill the requirements of appropriated structure, bioactivity, and stability, etc. The aim of this work was the application of the micro-structural characterization by means of Scanning Electron Microscopy on different assays applied to Poliapatita®®. This technique it is commonly employed on many morphological studies of materials because of the important information generated. Material and Methods: A JSM-5330 Jeol Scanning Electron Microscopy was employed and the samples were measured with electrons with energy of 20 kV and a work distance of 10 mm. Different Poliapatita® samples were taken: first from blocks, second from its bioactivity study and third from its accelerated degradation study. Results and Discussion: The SEM micrographs taken to Poliapatita® surface and at different cuts, showed that the polymer agglomerate all CaCO3 and HAP-200 particles, but it doesn't covert it complete. Inside of biomaterial the interconnected three-dimensional tunnels from hydroxyapatite were also observed. When the samples were taken from the bioactivity study a traditional formation of biological hydroxyapatites was observed in high extension. In the degradation study an adequate degradation of biomaterial was observed. Conclusion: The composite studied has a porous structure appropriated for bone biomaterials implants. Also it was bioactive and an expected decomposition on the accelerated degradation study was observed. SEM was an invaluable technique for these studies. [ABSTRACT FROM AUTHOR]

Introduction: Poliapatita® is a composite formed by hydroxyapatite (HAP-200), CaCO3 and polyvinyl acetate (POVIAc ). This composite it is been evaluated as a bone implant biomaterial and should be fulfill the requirements of appropriated structure, bioactivity, and stability, etc. The aim of this work was the application of the micro-structural characterization by means of Scanning Electron Microscopy on different assays applied to Poliapatita®. This technique it is commonly employed on many morphological studies of materials because of the important information generated. Material and Methods: A JSM-5330 Jeol Scanning Electron Microscopy was employed and the samples were measured with electrons with energy of 20 kV and a work distance of 10 mm. Different Poliapatita® samples were taken: first from blocks, second from its bioactivity study and third from its accelerated degradation study. Results and Discussion: The SEM micrographs taken to Poliapatita surface and at different cuts, showed that the polymer agglomerate all CaCO3 and HAP-200 particles, but it doesn't covert it complete. Inside of biomaterial the interconnected three-dimensional tunnels from hydroxyapatite were also observed. When the samples were taken from the bioactivity study a traditional formation of biological hydroxyapatites was observed in high extension. In the degradation study an adequate degradation of biomaterial was observed. Conclusion: The composite studied has a porous structure appropriated for bone biomaterials implants. Also it was bioactive and an expected decomposition on the accelerated degradation study was observed. SEM was an invaluable technique for these studies. [ABSTRACT FROM AUTHOR]