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ePaper created 2015-03-06, 14:42:46 | version 1.33.01
30 I I industry report _ digital technologies (second step of the digital dentistry workflow). First, we used a desk scanner with blue structured light technology (DScan3 Blue Light, EGS) to acquire data from the model. This provided very accurate data (up to 15 μ) to the laboratory for an effective and efficient result (Fig. 14). We then used a body scanner to acquire the facial data with great precision (Fig. 15). This scanning step was fundamental for the volume constructionandfortheconsequentfabricationof the underlying framework (Fig. 16). At this point, all of the data collected was transferred to DentalCAD, now in Version 4.2. We then created the framework using its simple 3-D modelling tools and by importing the volumes studied in DSS (third step of the digital dentistry workflow). Using the 3-D data of both the face and the mouth, we were able to study the occlusal aspects, as well as the relationship between the teeth and lips. It was possible to align the 3-D scan of the face with the 3-D scan of the mouth owing to an additional scan taken with an extra-oral landmark (Figs. 17–22). The very high quality of the mesh created with DentalCAD allows 3-D printing of the framework in PMMA in order to try it on the patient. In ac- cordance with the procedure, all of the customi- zations necessary for the fabrication of the final prosthesiswereperformedinaveryshortperiodby screwingtheprototypedirectlyintotheoralcavity of the patient (Fig. 23). The use of these technologies offers several benefits, in particular, the repeatability of the shapes designed and the prototype creation. The prototype obtained can be considered definitive and fabrication of the definitive prosthesis will be simplified,sincetheprojectfileswillbestoreddig- itally. In addition, the patient is shown a concrete CAD/CAM 1_2015 Fig. 25bFig. 25a Fig. 23Fig. 22 Fig. 24 Fig. 19 Fig. 20 Fig. 21 CAD0115_28-31_Rossi 02.03.15 12:48 Seite 3 CAD0115_28-31_Rossi 02.03.1512:48 Seite 3