Table 4.
The association between bony changes in mandible and mandibular canal visibility with ORN post dental extraction
| Variable | All extracted teeth, n (%) | Teeth with no ORN, n (%) | Teeth with ORN, n (%) | p value |
|---|---|---|---|---|
| Bony changes | ||||
| Sclerosis | 58 (36.5%) | 54 (37.5%) | 4 (26.7%) | 0.022a* |
| Resorption | 9 (5.7%) | 7 (4.9%) | 2 (13.3%) | |
| Mixed radiopaque-radiolucency | 19 (11.9%) | 14 (9.7%) | 5 (33.3%) | |
| No change | 73 (45.9%) | 69 (47.9%) | 4 (26.7%) | |
| Mandibular canal UCL visibilityc | ||||
| Visible | 54 (50.5%) | 50 (54.3%) | 4 (26.7%) | 0.047b* |
| Invisible | 53 (49.5%) | 42 (45.7%) | 11 (73.3%) | |
| Mandibular canal LCL visibilityc | ||||
| Visible | 92 (86.0%) | 82 (89.1%) | 10 (66.7%) | 0.035a* |
| Invisible | 15 (14.0%) | 10 (10.9%) | 5 (33.3%) |
UCL upper cortical line, LCL lower cortical line
aFisher’s exact test
bPearson chi-square test
cLOWER incisors were not applicable to mandibular canal visibility assessment (N = 107)