CAD/CAM - international magazine of digital dentistry

20 I I case report _ guided surgery the second STL file at this time. The CAD/CAM-fab- ricated monolithic implant crown can be finalized based on the virtually generated patient situation in a model-free technical approach. Step5 The full-contour reconstruction is tried out and revealsafunctionaltreatmentoutcomewithoutthe need for any interproximal or occlusal corrections and a pleasing clinical appearance (Figs. 11a–c). _Summary Further development in digital implant dentistry approximates the interfaces of surgical and pros- thetic treatment steps: from the virtual planning, plotted on a guidance template manufacturing, to the CAD/CAM-based design, including production of the final prosthetic reconstruction. As a part of the whole digital sequence, CAIS offers an additional tool in the interdiscipli- nary treatment planning. Precise and predictable treatment results can be implemented with this approach under consideration of the individual patient situation. In the full digital workflow, the overall treatment time is shortened and technical work steps can be saved in advance in a total of five stages with only three patient appointments. This novel process ensures the virtual construction and fabrication of surgical templates with a 3-D printer as well as the fabrication of monolithic im- plant-supported reconstructions using CAD/CAM- technologywithouttheneedforanyphysicalmod- els. This approach has the potential to further simplify clinical procedures in implant patients. The technique needs to be examined in clinical studies. In addition, clinical experience will demonstrate what percentage of the patient pool will benefit from this exciting technology. _Acknowledgements The authors would like to thank the dental tech- nologist Isabell Wiestler for the manufacturing of theimplant-supportedreconstructionandAlbrecht Schnappauf for his technical support._ iTeroisatrademarkofAlignTechnologyInc.,SanJose/USA CAD/CAM 4_2013 Dr Tim Joda,DMD,MSc Division of Fixed Prosthodontics School of Dental Medicine, University of Berne, Switzerland Prof.Daniel Buser,DMD,PhD Department of Oral Surgery School of Dental Medicine, University of Berne, Switzerland CAD/CAM_about the authors Fig. 11b Fig. 11cFig. 11a Fig. 10b Fig. 10cFig. 10a