Table 1.
Description of landmarks on mandibular symphysis
| No | Type of landmark | Name | Description |
|---|---|---|---|
| 1 | Type II | Labial alveolar crest | The highest point of the labial alveolar crest |
| 2 | Type III | B-point | The deepest point on the curved profile of the mandible between the chin and alveolar crest |
| 3 | Type III | Pogonion | The most anterior point on the bony chin |
| 5 | Type III | Gnathion | The most anterior and inferior point on the bony chin |
| 4 | Type III | Menton | The most inferior point of the MS in the midline |
| 7 | Type III | The most posterior and inferior point on the bony chin | |
| 6 | Type III | The most posterior point of bony chin | |
| 8 | Type III | B°-point | Lingual to B-point with the reference to long axis of lower incisor |
| 9 | Type II | Lingual alveolar crest | The highest point of the lingual alveolar crest |