| CD | Chamfer distance |
| FDI | FDI World Dental Federation two-digit tooth numbering system |
| ICP | Iterative closest point |
| PCA | Principal component analysis |
| gPCA | PCA with PointNet-guided candidate selection |
| PointNet | Permutation-invariant point cloud encoder by Qi et al. |
| PointNetLK | PointNet with Lucas–Kanade alignment |
| rPointNet | Residual PointNet correction |
| gPCA-rPointNet | gPCA with residual PointNet refinement |
| SE(3) | Special Euclidean group (3D rigid transforms) |
| SO(3) | Special orthogonal group (3D rotations) |
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