Table 3.
Distribution of dental anomalies among individuals with and without third molar agenesis.
| Third Molar Agenesis (%) 93b (11.2) | No Third Molar Agenesis (%) 738b (88.8) | p-value | Odds Ratio (95% Confidence Interval) | |
|---|---|---|---|---|
| Dental Anomalies | n (%) | |||
| Agenesis | 16 (17.2) | 41 (5.6) | > 0.01a | 3.52 (1.89–6.59) |
| Supernumerary | 3 (3.2) | 24 (3.3) | 0.989 | 0.99 (0.29–3.36) |
| Microdontia | 11 (11.8) | 24 (3.3) | > 0.01a | 3.99 (1.89–8.44) |
| Macrodontia | – | 2 (0.3) | 0.615 | 1.13 (1.09–1.15) |
| Impaction | 38 (40.9) | 478 (64.8) | > 0.01a | 3.3 (1.72–4.16) |
| Transposition | 2 (2.2) | 29 (3.9) | 0.394 | 0.54 (0.13–2.29) |
| Giroversion | 35 (37.6) | 327 (44.3) | 0.221 | 0.76 (0.49–1.18) |
| Root Dilaceration | 2 (2.2) | 18 (2.4) | 0.864 | 0.88 (0.20–3.85) |
| Crown Dilaceration | – | 1 (0.1) | 0.722 | 1.13 (1.10–1.15) |
| Odontoma | 1 (1.1) | 1 (0.1) | 0.081 | 8.01 (0.50–129.16c) |
| Taurodontism | – | 1 (0.1) | 0.722 | 1.13 (1.10–1.15) |
Notes: P-value is based on chi-square test.
a
Statistically significant (p < 0.05).
b
216 patients were excluded because it was not possible to diagnose third molar agenesis.
c
Unstable numbers due to low frequency.