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Table 1 Visibility of the roof of the CM in the 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

  Visibility in PR Visibility in CBCT Visibility only in CBCT No visibility in CBCT and PR Total (significance)
P2
 Left 39.2% (125) 100% (319) 60.8% (194)   319 (p<0.001)
 Right 48.6% (156) 100% (321) 51.4% (165)   321 (p<0.001)
M1
 Left 12.9% (41) 100% (319) 87.1% (278)   319 (p<0.001)
 Right 13.4% (43) 100% (321) 86.6% (279)   321 (p<0.001)
M2
 Left 14.7% (47) 100% (319) 85.3% (273)   319 (p<0.001)
 Right 12.5% (40) 100% (320) 87.5% (281)   320 (p<0.001)
M3
 Left 28.2% (89) 96.8% (306) 68.7% (217) 3.2% (10) 316 (p<0.001)
 Right 37.5% (118) 96.2% (303) 58.7% (185) 3.8% (12) 315 (p<0.001)
  1. Visibility of the CM in the PR and CBCT in the individual jaw sections P2, M1, M2 and M3 respectively, left and right in percent (absolute)