en رادیولوژی دهان، فک و صورت Oral and Maxillofacial Radiology پژوهشي Research <p> <strong>Background</strong>: Cross- sectional tomograms have been used for optimal pre-operative planning of dental implant placement. The aim of the present study was to assess the accuracy of Cone Beam Computed Tomography (CBCT) measurements of specifi c distances around the mandibular canal by comparing them to those obtained from Multi-Slice Computed Tomography (MSCT) images. </p><p> <strong>Materials and Methods</strong>: Ten hemi-mandible specimens were examined using CBCT and MSCT. Before imaging, wires were placed at 7 locations between the anterior margin of the third molar and the anterior margin of the second premolar as reference points. Following distances were measured by two observers on each cross-sectional CBCT and MSCT image: Mandibular Width (W), Length (L), Upper Distance (UD), Lower Distance (LD), Buccal Distance (BD), and Lingual Distance (LID). The obtained data were evaluated using SPSS software, applying paired t-test and intra-class correlation coeffi cient (ICC). </p><p> <strong>Results</strong>: There was a signifi cant difference between the values obtained by MSCT and CBCT measurement for all areas such as H, W, UD, LD, BD, and LID, (P < 0.001), with a difference less than 1 mm. The ICC for all distances by both techniques, measured by a single observer with a one week interval and between 2 observers was 99% and 98%, respectively. Comparing the obtained data of both techniques indicates that the difference between two techniques is 2.17% relative to MSCT. </p><p> <strong>Conclusion:</strong> The results of this study showed that there is signifi cant difference between measurements obtained by CBCT and MSCT. However, the difference is not clinically signifi cant. </p><hr><p></p><p> <strong>Source: </strong>Dental Research Journal</p><p><a href="http://drj.mui.ac.ir/index.php/drj/article/view/1376" target="_blank"><font color="#0000ff"> Full Text</font></a></p> Cone beam computed tomography linear measurements, multi-slice computed 0 0 http://idai.ir/browse.php?a_code=A-10-32-1166&slc_lang=en&sid=1 Asieh Zamani Naser zamaninaser@dnt.mui.ac.ir 10031947532846005101 10031947532846005101 Yes Torabinejad Dental Research Center, Department of Oromaxillofacial Radiology, School of dentistry Bahar Behdad Mehr 10031947532846005102 10031947532846005102 No School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran