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Table 4 Accuracy of the diagnostic answers given, according to imaging modality: OPG versus CBCT

From: Do we need CBCTs for sufficient diagnostics?-dentist-related factors

Question pertaining to OPG (%) CBCT (%) p value Odds ratio (95% CI)
Contact to nerve 91 93 0.616 0.8 (0.3–2.4)
Displacement of tooth 88 90 0.543 0.7 (0.3–0.5)
Number of roots 95 94 0.775 1.2 (0.3–5.1)
Contact to adjacent teeth 73 70 0.643 1.2 (0.6–2.3)
Pericoronar cyst 73 75 0.764 0.9 (0.5–1.7)
Maturation of root 84 83 1.000
Resorption (bone or tooth) toothtooth) 65 72 0.305 0.7 (0.4–1.4)
Ankylosis 86 85 1.000
Preservation 83 78 0.510 1.3 (0.6–2.7)
  1. Percentage of correct answers given based on OPG and CBCT (after OPG). To assess the differences between the imaging modality, p value of Fisher’s exact test is given together with odds ratio (OR), including 95% confidence intervals (CI). OR refers to CBCT with OPG as reference