Fig. 2

The 3D distance-aware network consisting of segmentation and classification stages for classifying the positional relationship between the third molar and the mandibular canal. In the segmentation stage, the third molar and the mandibular canal were simultaneously segmented using Dense121 U-Net. In the classification stage, the 3D distance-aware network with inputs of CBCT volume and the distance map classified the buccal-lingual positional relationship between the third molar and the mandibular canal