Table 1 Assigned landmarks.
Label | Landmark | Definition |
|---|---|---|
F1/F2 | Upper central incisor right/left (hard tissue landmark) | The midpoint of the buccal surface, at the cervical level of the anatomical crown of the central incisor-right/left |
F3/F4 | Upper canine right/left (hard tissue landmark) | The midpoint of the buccal surface, at the cervical level of the anatomical crown of the canine-right/left |
F5/F6 | Cupid bow right/left (soft tissue landmark) | The point on the upper lip vermillion, at the peak of Cupid’s bow-right/left |
F7/F8 | Cheilion right/left (soft tissue landmark) | The point at the outermost corner of the mouth, where the upper and lower lip meet-right/left |
F9 | Soft tissue point A’ (soft tissue landmark) | The most concave point of the upper lip in the sagittal plane |
F10 | Hard tissue point A (hard tissue landmark) | The most concave point of the maxillary alveolar bone, in the sagittal plane |
