Table 3.
Comparison of the arch width between estimated and actual tooth models in deep learning method (unit: mm)
| Estimated tooth model | Actual tooth model | P value* | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Max | Min | Mean | SD | Max | Min | ||
| Maxilla | |||||||||
| Inter-incisor width U1 | 7.2 | 1.0 | 8.7 | 6.3 | 7.1 | 0.9 | 8.4 | 6.2 | 0.882 |
| Inter-incisor width U2 | 17.6 | 1.8 | 20.1 | 15.7 | 18.1 | 2.2 | 20.3 | 15.3 | 0.488 |
| Inter-canine width | 32.5 | 2.3 | 36.0 | 30.1 | 32.1 | 2.5 | 35.8 | 29.3 | 0.366 |
| Inter-premolar width | 39.0 | 2.9 | 41.9 | 34.6 | 39.0 | 3.3 | 42.3 | 34.7 | 0.904 |
| Inter-molar width | 50.4 | 2.6 | 52.1 | 46.1 | 50.2 | 3.1 | 52.9 | 45.5 | 0.663 |
| Mandible | |||||||||
| Inter-incisor width L1 | 4.2 | 1.3 | 6.2 | 2.9 | 4.3 | 1.0 | 5.8 | 3.3 | 0.883 |
| Inter-incisor width L2 | 12.3 | 0.6 | 13.0 | 11.5 | 12.6 | 0.8 | 13.6 | 11.6 | 0.324 |
| Inter-canine width | 22.4 | 2.6 | 26.4 | 19.5 | 23.2 | 2.1 | 26.5 | 21.2 | 0.199 |
| Inter-premolar width | 31.1 | 1.7 | 33.6 | 29.6 | 31.9 | 1.8 | 34.8 | 30.1 | 0.115 |
| Inter-molar width | 38.9 | 2.5 | 42.5 | 36.3 | 39.9 | 2.0 | 41.6 | 37.3 | 0.316 |
SD, Standard deviation
*The results of paired t test. U1, maxillary central incisors; U2, maxillary lateral incisors; L1, mandibular central incisors; L2, mandibular lateral incisors