USE OF ULTRAFAST COMPUTED-TOMOGRAPHY IN DENTAL SURGERY - A CASE-REPORT

A case of a transdental fixation planned on the basis of ultrafast com puted tomography is reported. This method allows to gain an insight in the osseous structures required for the operative procedure. Ultrafas t computed tomography is superior to the convential radiographs in obt aining accurate information about the vertical bone supply and the ext ension of the facial osseous sinus wall. A set of axial CT-images with an extension of 3 mm was acquired in the region of the alveolar bone. By means of frontal reconstructions and data processing methods the t hickness of the bone layer in transverse direction was accurately dete rmined. The calculated bone thickness allowed to anchor a transdental self-tapping titanium screw.