Table 1.
Relationship between DPR and CBCT findings for the number of roots
| The number of roots on DPR images |
The number of roots on CBCT images |
Total |
Chi-square |
P value |
|||
|---|---|---|---|---|---|---|---|
| 1 root | 2 roots | 3 roots | Total | ||||
|
1 root |
n |
29 |
14 |
1 |
44 |
159.579 | 0.000* |
| % |
65.9% |
31.8% |
2.3% |
100.0% |
|||
|
2 roots |
n |
2 |
223 |
28 |
253 |
||
| % |
0.8% |
88.1% |
11.1% |
100.0% |
|||
|
3 roots |
n |
0 |
0 |
1 |
1 |
||
| % |
0.0% |
0.0% |
100.0% |
100.0% |
|||
| Total | n |
31 |
237 |
30 |
298 |
||
| % | 10.4% | 79.5% | 10.1% | 100.0% | |||
DPR: Digital panoramic radiography.
CBCT: Cone-beam computed tomography.
*Statistically significant difference p < 0.05.