Table 2.
Survival Analysis for Incident Pathologies of Adjacent Second Molar
| Third Molar Status | Relative Risk | 95% Confidence Interval | pa |
|---|---|---|---|
| Caries experience | |||
| Absent | Reference | — | .003 |
| Erupted | 2.53 | 1.55, 4.14 | |
| Soft tissue impaction | 0.83 | 0.11, 6.04 | |
| Bony impaction | 1.44 | 0.55, 3.72 | |
| Distal bone loss, ≥ 20% | |||
| Absent | Reference | — | < .001 |
| Erupted | 1.49 | 0.96, 2.31 | |
| Soft tissue impaction | 9.15 | 4.63, 18.1 | |
| Bony impaction | 3.09 | 1.83, 5.22 | |
| Distal probing depth, > 4 mm | |||
| Absent | Reference | — | < .001 |
| Erupted | 1.87 | 1.25, 2.79 | |
| Soft tissue impaction | 6.41 | 2.92, 14.1 | |
| Bony impaction | 1.60 | 0.96, 2.67 |
a
Values are based on marginal multivariate survival regression models comparing third molar status while adjusting for age, smoking status, and educational status.