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Materials placed in the body should be indifferent to the surrounding environment, and at the same time fulfill their functions. By assumption, they should be biocompatible, biofunctional and serve according to their intended use. After the implant is introduced in living tissues, the immune system responds. In order for the implant to be accepted by the body, many factors must be involved. The research contained in the article describes the phenomena occurring on an implant in a living organism. Those tests show the surface degradation of the material, by using a scanning electron microscope (FEI Quanta FEG 250) and optical coherence tomography (OCT). The tests show the surface and material damage of the tested samples.