Bio-Active surface treatment
Histological researches on implants showed best performance of the BIO-ACTIVE surfaces (treated with
double acid-etching) compared to the “machined” surfaces, especially in cases of poor bone quality. The
BIO-ACTIVE treatment consists of a double organic acid etching (the first creates the macro-texture, the
second generates the micro-rough structure). Each treatment involves a cold plasma decontamination.
The benefits introduced by the treated surfaces are more evident in difficult situations, where the improved
biological response can provide for the reduced mechanical contribution.
The surface morphology of the screws was evaluated by observation under the Scanning Electron
Microscope. Figures 1-4, with low enlargement, demonstrate that the macroscopic aspects (thread and
cutting-edge) of the screw are not affected by the treatment. Increasing the magnification, as in figures 5-6
(10.000x and 15.000x), we can observe the typical micro-roughness topography produced by the surface
treatment with double acid etching.
As known and reported in the scientific literature, this particular micro topography allows the surface to act as a “sponge” which strongly interacts with the clot and stimulates the regeneration of bones. From these images it is possible to highlight the absence of contaminants or foreign deposits.
