CAD0111

Fig. 1_Single missing tooth #36, in- adequate fillings of teeth #35 and 37. Fig. 2_Radiographic template with bite registration material. Fig. 3_CAD data of the designed crown based on an intra-oral scan with CEREC AC Bluecam. Fig. 4_Virtual model of the maxilla and the mandible. Figs. 5a & b_Intra-oral scan data (SSI) and 3-D X-ray data (DICOM) before fusion. 10 I I case report _ guided implantation _Today, digital dentistry andCAD/CAMtech- nologyarewidelyusedindentistry,particularlyin the field of implantology. While the last decade was entirely dominated by the CAD/CAM-sup- ported fabrication of dental restorations, digital impressions have attracted increasing attention amongst dental surgeons and technicians in the last few years.1, 2 Prosthetic-oriented planning of the implant position meets the standard in implantology. Previously, this type of backward planning and subsequent navigated implant placement relied on conventional impressions. However, in recent years it has been possible to capture the clinical situation with digital impressions using intra-oral scanners, which may replace the conventional method for several indica- tions. Inthefollowingcasestudy,informationonthe clinical situation was captured using intra-oral digital imaging. A virtual crown was designed chairside. The CAD data was combined with data obtainedfromCBCT.Basedonopticalscan,virtual crown and 3-D X-ray data, implant planning took place and the information was translated into a corresponding surgical guide. Thepresentcasestudyoutlinesthestepsbased on the example of an implant in region 36 using the implant planning software SICAT Implant, the optical scanner CEREC AC Bluecam and DICOMdataobtainedfromaGALILEOS3DSystem (both Sirona). _Case presentation The patient was referred to the Department of Prosthetic Dentistry of the Ludwig Maximilian University in Munich (LMU) after extraction of tooth #36. After an extensive case history had been taken, possible treatment alternatives were discussed. The patient opted for an implant- supported crown in region 36 along with further prosthetic work (inlay on teeth #35 and 37). Figure 1 shows the condition of the lower CAD/CAM 1_2011 Guidedimplantplacement withoutconventionalimpressions Authors_ Dr Jan-Frederik Güth, Dr Florian Beuer & Prof Daniel Edelhoff, Germany Fig. 5a Fig. 5b Fig. 1 Fig. 2 Fig. 3 Fig. 4