Evaluation of surface topography of duravit implants treated with bioactive method
The aim of this work was the evaluation of the surface treatment, using the sandblasted and doubly acid etched on Duravit Implants.
Materials and methods
The surface topography of the implants was evaluated by scanning electron microscope (SEM).
Roughness has been estimated quantitatively using dedicated software to convert conventional SEM images into three-dimensional data (Mex 4.2, Alicona Imaging). In particular, in this case, the images are increasing magnifications (shown in each one) of the treated implants.
The main results of SEM observation are reported in the micrographs below. First of all, (Fig. 1) shows a low magnification (200 x) image of the sample. It is possible toappreciate the nice machining work, together with a homogeneous surface finish without particles or blasting residuals.(Fig. 2) Increasing the magnification, we observe the typical topography induced by this treatment, where it can be appreciated larger craters due to blasting and internally it can be noticed a more short-ranged roughness.Fig. 3 and 4) (2500 and 5000 x) show the typical structure of micro-roughness surfaces treated with double acid attack.
As known and as reported in the scientific literature on the subject, this particular micro-topography enables the surface to act as a “sponge”, interacting strongly with the clot and stimulating bone regeneration. These images show better the absence of contaminants or foreign deposits, as shown below in thesurface analysis section.
These images show better the absence of contaminants or foreign deposits, as shown below in the surface analysis section.(Fig. 5) EDX analysis confirms that the only elements detected are Ti, Al and V, as expected from the nature of the sample.(Fig. 6) To quantify the roughness a stereo SEM analysis three-dimensional reconstruction of the surface has been used to provide the following data, reported in accordance with ISO 4287: (Fig. 7) show the typical topography expected. The values observed on DURAVIT implants treated with the Speed-Bone method are derived from the analysis of twopoints for each sample, a statistical point of view they are not significantly different than the parameters reported in the literature. Therefore in general the data are in good agreement with expectations for this type of treatment.