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cone beam international magazine of cone beam dentistry

case report _ dental implantology I tation, the teeth can be virtually removed from the 3-D reconstructed maxillary arch (Fig. 24). The ability to combine digital datasets allows for unparalleled diagnostic interaction, providing state-of-the-art preoperative assessment of the virtually placed implants, abutments, gingiva and bone. Once the surgeon was satisfied with the virtual plan for the implants, the software was directed to fabricate the simulated bone- supported surgical guide (Fig. 27). The data was then sent via the Internet for stereolithographic (rapid-prototyping) fabrication of the resin surgi- cal guide (Fig. 30). The implant-specific SIMPLANT SAFE surgical guide incorporated drilling sleeves to match the manufacturer’s drilling sequence (Fig. 30). In addition, a 3-D printed model of the situation after implantplacement wasfabricatedforuseasacontrol model during manufacture of the temporary restora- tion. This optional step provided additional confidence intheaccuracyofthetemporaryrestoration.However, it is possible to make a temporary restoration using digitaldataexclusively(Figs.33–36). Fabricationofthetemporaryrestoration The digital workflow as described helps to facili- tate the fabrication of a temporary restoration that must fit immediately and accurately after implant Fig. 27_The bone-supported SIMPLANT SAFE Guide in the software. Fig. 28_The virtual template for the manufacture of the 3-D model. Fig. 29_The virtual template for the manufactureoftheSIMPLANTSAFEGuide. Fig. 30_The SIMPLANT SAFE Guide, the bone-supported drilling aid, after stereolithographic fabrication and incorporation of drilling sleeves. Fig. 31_The laser-printed 3-D model (3D Systems). Fig. 32_On the model, it is possible to see the exact position of the abutments after implantation. Fig. 33_Exocad DentalCAD software: mandible, virtual design in the maxillae, articulated with the abutments in position. Fig. 34_Construction in exocad DentalCAD. Fig. 35_The STL data is sent to the milling machine. Fig. 36_The virtual construction of the tooth position in exocad DentalCAD in comparison with the scanned set-up. I 19cone beam2_2014 Fig. 34 Fig. 32Fig. 31 Fig. 29Fig. 28 Fig. 36Fig. 35 Fig. 27 Fig. 30 Fig. 33