Position of the roots in relation the MC |
Above the canal | Buccal side | Lingual side | Canal between the roots |
---|---|---|---|---|
IAN injury incidence | 9/272 (3.3%) | 16/86 (18.6%) | 8/172 (4.6%) | 0/7 (0%) |
P value | 0.006 | < 0.0001 | 0.32 | - |
IAN recovery | 23 healed within a week, and 10 healed within 6 months. No permanent injury. |