Table 4. Association between the number of canals, foramens and Vertucci’s classification with the classification of apical periodontitis.
| Variable | Apical periodontitis classification | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | 5 | D | |||
| Canals | |||||||||
| 1 | 251 (55.7) | 55 (12.2) | 68 (15.1) | 34 (7.5) | 7 (1.6) | 1 (0.2) | 35 (7.8) | 451 | |
| 2 | 215 (39.2) | 56 (10.2) | 100 (18.2) | 97 (17.7) | 18 (3.3) | 1 (0.2) | 62 (11.3) | 549 | |
| Total | 466 | 111 | 168 | 131 | 25 | 2 | 97 | 1,000 | |
| OR (CI) | Ref. | 0.84 (0.56–1.27) | 1.72 (1.20–2.46) | 3.33 (2.16–5.13) | 3.00 (1.23–7.32) | - | 2.07 (1.32–3.26) | ||
| Foramina | |||||||||
| 1 | 333 (54.9) | 70 (11.5) | 87 (14.3) | 56 (9.2) | 10 (1.6) | 1 (0.2) | 50 (8.2) | 607 | |
| 2 | 133 (33.8) | 41 (10.4) | 81 (20.6) | 75 (19.1) | 15 (3.8) | 1 (0.3) | 47 (12.0) | 393 | |
| Total | 466 | 111 | 168 | 131 | 25 | 2 | 97 | 1,000 | |
| OR (CI) | Ref. | 0.68 (0.44–1.05) | 1.47 (0.95–2.27) | 2.33 (1.62–3.35) | 3.76 (1.65–8.57) | - | 2.35 (1.51–3.68) | ||
| Vertucci's classification | |||||||||
| Type I | 250 (55.9) | 55 (12.3) | 67 (15.0) | 33 (7.4) | 7 (1.6) | 1 (0.2) | 34 (7.6) | 447 | |
| Type II | 82 (51.6) | 15 (9.4) | 20 (12.6) | 23 (14.5) | 3 (1.9) | 0 (0.0) | 16 (10.1) | 159 | |
| Type III | 1 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 | |
| Type IV | 131 (33.9) | 41 (10.6) | 80 (20.7) | 74 (19.1) | 15 (3.9) | 1 (0.3) | 45 (11.6) | 387 | |
| Type VI | 2 (33.3) | 0 (0.0) | 1 (16.7) | 1 (16.7) | 0 (0.0) | 0 (0.0) | 2 (33.3) | 6 | |
| Total | 466 | 111 | 168 | 131 | 25 | 2 | 97 | 1,000 | |
Values are presented as number (%). Bold numbers indicate positive association between the variables.
OR, odds ratio; CI, confidence interval.