IM0210

The DVT devices of today’s generation are often similar in design and appearance to traditional digi- tal volume tomographs; the position of the patient with these and other “frame” devices is typically standing or sitting, while the once dominant supine patientpositionofthefirstdevicegenerationispassé except for one manufacturer. _Various volumes Such first-generation devices featured very large volumes which required time-consuming reworking of the immense data record for problems beyond large and reconstruction surgery in order to be able to evaluate the “relevant” data and/or regions in a target-oriented manner. Today numerous manufac- turersofferdeviceswithmid-sizeandsmallvolumes. Three types of devices are available: _Deviceswithalargevolume(18x20cmandhigher) for oral surgery and reconstruction. _Devices with a medium volume (8 x 10 cm and higher) for oral surgery and reconstruction. _Devices with a small volume (4 x 5 cm) for oral sur- gery and dental procedures. _Problems with devices with small and medium volume Devices with small and medium volume are gen- erally used in oral surgery and dental practices; they are mostly used for preimplantological diagnostics, for oral surgery and orthodontic and endodontic procedures. The “finiteness” of the volume size requires care- ful device setting and patient positioning so that the relevant structure is also depicted and/or “encoun- tered”; it must also be “well targeted.” For new users and those colleagues who only do volume tomographies once in a while, this correct setting can pose difficulties. This was our motivation to develop a DVT phan- tom which can be used for training purposes as well as for direct preparation of an image with a patient. _The DVT phantom and its application The DVT phantom is an X-ray phantom which de- picts a medium-sized mandibular and maxillar den- tal arch; the teeth are positioned in ideal denticula- tion. The divided phantom (mandible and maxilla) is mounted on the individual biting or positioning aid/support of the respective device. Barium sulfate is added to the plastic teeth so that they are visible in easy-graft® CRYSTAL Biphasiccompositesubstitute,60%HA/40%ß-TCP,PLGAcoatedBiph Degradable Solutions AG Wagistrasse 23 CH-8952 Schlieren Phone: +41 43 433 62 60 www.degradable.ch dental@degradable.ch Simple handling and accelerated osteocon- duction for long-term volume preservation. Order your free test sample over the internet! bionicstickygranules AD