Research Article
Automatic Analysis of Lateral Cephalograms Based on Multiresolution Decision Tree Regression Voting
Table 9
Eight standard cephalometric measurement methods for classification of anatomical types [
28].
| No. | Measurement | Type 1 | Type 2 | Type 3 | Type 4 |
| 1 | ANB | 3.2°∼5.7° class I (normal) | >5.7° class II | <3.2° class III | — | 2 | SNB | 74.6°∼78.7° normal mandible | <74.6° retrognathic mandible | >78.7° prognathic mandible | — | 3 | SNA | 79.4°∼83.2° normal maxilla | >83.2° prognathic maxilla | <79.4° retrognathic maxilla | — | 4 | ODI | Normal: 74.5° ± 6.07° | >80.5° deep bite tendency | <68.4° open bite tendency | — | 5 | APDI | Normal: 81.4° ± 3.8° | <77.6° class II tendency | >85.2° class III tendency | — | 6 | FHI | Normal: 0.65∼0.75 | >0.75 short face tendency | <0.65 long face tendency | — | 7 | FHA | Normal: 26.8°∼31.4° | >31.4° mandible high angle tendency | <26.8° mandible lower angle tendency | — | 8 | MW | Normal: 2 mm∼4.5 mm | MW = 0 mm edge to edge | MW <0 mm anterior cross bite | MW >4.5 mm large over jet |
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