Please activate JavaScript!
Please install Adobe Flash Player, click here for download

Journal of Oral Science & Rehabilitation No. 3, 2016

Journal of Oral Science & Rehabilitation Volume 2 | Issue 3/2016 47 A x i a l p l a n e i n c o m p u t e d t o m o g r a p h y Table 2 Table 3 Table 2 Discrepancies between radiographic measurements (mm) and measurements taken directly from the bone (mm) using the basal plane as the axial reference plane (Student’s t-test). Table 3 Distribution of discrepancies in millimeters observed in each of the 18 sagittal tomographic slices in relation to the axial reference plane used (Pearson’s chi-squared test). Sagittal tomographic slices Radiographic measurements (n = 39) Mean ± SD† Bone measurements (n = 39) Mean ± SD Discrepancies Mean ± SD p-value Cut 1 24.53 ± 3.88 24.96 ± 3.93 -0.42 ± 1.11 0.064 Cut 2 24.61 ± 4.02 25.16 ± 3.98 -0.55 ± 1.11 0.001 Cut 3 25.13 ± 4.15 25.98 ± 4.19 -0.84 ± 1.07 < 0.001 Cut 4 26.07 ± 4.08 27.31 ± 4.05 -1.23 ± 1.21 < 0.001 Cut 5 27.71 ± 4.22 29.17 ± 4.35 -1.46 ± 1.26 < 0.001 Cut 6 29.67 ± 4.30 30.61 ± 4.31 -0.92 ± 1.15 < 0.001 Cut 7 29.53 ± 4.21 30.29 ± 4.36 -0.75 ± 1.31 < 0.001 Cut 8 29.38 ± 4.35 30.09 ± 4.43 -0.71 ± 1.16 < 0.001 Cut 9 29.34 ± 4.47 30.11 ± 4.74 -0.77 ± 1.53 < 0.001 Cut 10 29.41 ± 4.55 30.24 ± 4.62 -0.82 ± 1.15 < 0.001 Cut 11 29.25 ± 4.36 30.17 ± 4.45 -0.92 ± 1.18 < 0.001 Cut 12 29.26 ± 4.37 29.83 ± 4.55 -0.56 ± 1.36 0.001 Cut 13 28.67 ± 4.62 29.51 ± 4.65 -0.83 ± 1.13 < 0.001 Cut 14 27.26 ± 4.83 28.29 ± 4.91 -1.03 ± 1.37 < 0.001 Cut 15 26.14 ± 4.89 27.02 ± 4.75 -0.87 ± 1.26 < 0.001 Cut 16 25.14 ± 4.94 25.94 ± 4.71 -0.79 ± 1.46 < 0.001 Cut 17 24.71 ± 4.83 25.37 ± 4.78 -0.66 ± 1.25 0.004 Cut 18 24.73 ± 4.84 25.64 ± 4.64 -0.91 ± 0.41 < 0.001 Occlusal plane (n = 18) n (%) Basal plane (n = 18) n (%) p-value Discrepancies 0.001 ≤ 0.5 mm 10 (55.56) 1 (5.56) > 0.5 mm 8 (44.44) 17 (94.44) erativeassessmentofdentalimplanttreatments.22 It provides good images of the thickness of ves- tibular cortical bone and interalveolar distances, as well as of important anatomical features in jaws.23 When used for imaging the mandible, the main advantage of CT scans over periapical or panoramic radiographs is that they provide a relatively accurate assessment of the alveolar crestal bone height andwidth and its spatial rela- tionship with the mandibular canal.24 However, althoughthereisawiderangeofdentalCTequip- ment marketed as providing accurate bone data ata1:1scale,severalstudieshaveshowndiscrep- ancies between the radiographic measurements taken using CT and clinical measurements taken directly from the bone.14, 25 In 1996, Covino et al. † SD = standard deviation. Volume 2 | Issue 3/201647 Cut 124.53 ± 3.8824.96 ± 3.93 -0.42 ± 1.110.064 Cut 224.61 ± 4.0225.16 ± 3.98 -0.55 ± 1.110.001 Cut 325.13 ± 4.1525.98 ± 4.19 -0.84 ± 1.07 < 0.001 Cut 426.07 ± 4.0827.31 ± 4.05 -1.23 ± 1.21 < 0.001 Cut 527.71 ± 4.2229.17 ± 4.35 -1.46 ± 1.26 < 0.001 Cut 629.67 ± 4.3030.61 ± 4.31 -0.92 ± 1.15 < 0.001 Cut 729.53 ± 4.2130.29 ± 4.36 -0.75 ± 1.31 < 0.001 Cut 829.38 ± 4.3530.09 ± 4.43 -0.71 ± 1.16 < 0.001 Cut 929.34 ± 4.4730.11 ± 4.74 -0.77 ± 1.53 < 0.001 Cut 1029.41 ± 4.5530.24 ± 4.62 -0.82 ± 1.15 < 0.001 Cut 1129.25 ± 4.3630.17 ± 4.45 -0.92 ± 1.18 < 0.001 Cut 1229.26 ± 4.3729.83 ± 4.55 -0.56 ± 1.360.001 Cut 1328.67 ± 4.6229.51 ± 4.65 -0.83 ± 1.13 < 0.001 Cut 1427.26 ± 4.8328.29 ± 4.91 -1.03 ± 1.37 < 0.001 Cut 1526.14 ± 4.8927.02 ± 4.75 -0.87 ± 1.26 < 0.001 Cut 1625.14 ± 4.9425.94 ± 4.71 -0.79 ± 1.46 < 0.001 Cut 1724.71 ± 4.8325.37 ± 4.78 -0.66 ± 1.250.004 Cut 1824.73 ± 4.8425.64 ± 4.64 -0.91 ± 0.41 < 0.001

Pages Overview