Table 3.
Comparison of the distribution of OPG signs of inferior alveolar canal with cone-beam computed tomography findings among the study sample using Chi-square goodness of fit test
| Parameters | OPG, n (%) | CBCT (corticalization), n (%) | χ2 | P |
|---|---|---|---|---|
| Darkening of roots | 9 (30.0) | 4 (15.4) | 10.769 | 0.001* |
| Deflection of roots | 2 (6.7) | 0 | 0.330 | 0.56 |
| Narrowing of roots | 0 | 0 | . | . |
| Bifid root apex | 1 (3.3) | 1 (3.8) | 0.159 | 0.69 |
| Diversion of canal | 0 | 0 | . | . |
| Narrowing of canal | 0 | 0 | . | . |
| Interruption in white line | 29 (96.7) | 4 (15.4) | 0.159 | 0.69 |
CBCT: Cone-beam computed tomography, OPG: Orthopantomography. P < 0.001*