From: Three-dimensional analysis of incisive canals in human dentulous and edentulous maxillary bones
 | Classification of the IC from the sagittal cross section | ||||
---|---|---|---|---|---|
 | Cylinder-shaped | Funnel-shaped | Banana-shaped | Hourglass-shaped | |
Dentulous | n | 9 | 10 | 0 | 1 |
% | 45 | 50 | 0 | 5 | |
Edentulous | n | 9 | 9 | 1 | 1 |
% | 45 | 45 | 5 | 5 |