This is a cloud system suited to evaluate the buoyancy of different dental treatments by tomographic analysis of tooth. Quantitative comparison of 3D tooth structure acquired before and after treatment allows determining the quality and efficiency of tools and materials used for dental treatments. If the two acquired tomographic structures are not aligned, then VDL achieves a quick overlapping 3D image.

Several algorithms available in VDL allow visualizing detailed morphological and anatomical structures of teeth and obtain quantitative estimation of related parameters in order to evaluate the quality of dental treatments, e.g. endodontic, conservative and restorative treatments;  and also accurate analysis of re-treatments can be obtained.

As an example, the effect of endodontic canal treatment can be visualized in a 3D image using different colors to highlight the instrumentation effect on the canal volume and surface.  The same information is available as 2D image stack and also transferred quantitatively to an Excel spreadsheet, too. VDL estimates the volume of removed dentin, the percentage of treated canal surface for each single canal, the volume of debris still present and the distances between the canal surface and the tooth wall. Very important for this analysis is that in the presence of canal bifurcations it is possible to choose easily the canal path to be studied. Quantitative parameters can be organized also by dividing the canal length into three portions (e.g. apical, middle, coronal) or more (e.g. every millimeter). Each portion can be divided into four quadrants (Mesial, Buccal, Lingual, Distal) or more, by choosing an appropriate angular step.

An example of the analysis of conservative treatments is sketched below highlighting some slices from the 3D structure. The image shows the superposition between the 3D tooth structures with cavity preparation only (white),  and after the application of dental adhesive used to restore the portion of the tooth removed (green).
The superposition evidences the formation of micro-cracks (red) following the photo-polymerization of the adhesive material inside the tooth. Those micro-cracks together with some voids, at the interface between tooth and adhesive, are due to incorrect cavity filling and shrinkage of the material and are more clearly visualized looking at the corresponding 2D images where crack is light gray, adhesive composite is dark grey and voids are white.