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Table 2 Visibility and discrepancy of the CM in PR versus CBCT

From: The comparison of roof visibility of the mandibular canal between cone-beam computed tomography scans and panoramic radiograph images as dependent on the cortical bone thickness of the mandible

P2   N CBCT=PR N CBCT≠PR
 Left Lingual 125 2.05 193 2.04
Buccal 125 2.25 193 2.18
 Right Lingual 155 2.10 165 2.15
Buccal 155 2.31 165 2.31
M1   N CBCT=PR N CBCT≠PR
 Left Lingual 41 1.86 277 1.96
Buccal 41 2.50 277 2.42
 Right Lingual 42 1.89 279 2.01
Buccal 42 3.10 279 2.48
M2   N CBCT=PR N CBCT≠PR
 Left Lingual 46 1.54 273 1.74
Buccal 46 2.64 273 2.66
 Right Lingual 39 1.80 281 1.80
Buccal 39 2.72 281 2.73
M3   N CBCT=PR N CBCT≠PR
 Left Lingual 89 1.69 217 1.69
Buccal 89 2.52 217 2.59
 Right Lingual 118 1.69 185 1.68
Buccal 118 2.63 185 2.53
  1. Average values of the thickness of the cortical bone (in mm) in the individual jaw sections P2, M1, M2 and M3 respectively left and right as well as buccally and lingually, with consistent visibility of the CM (CBCT=PR) and with discrepancy (CBCT ≠PR)