Table 4 Maximum Von Mises stresses in the maxillofacial structures when 250-g force was applied at three different angulations in two clinical simulations (A & B) (in MPa)
Simulation A (Maxillary protraction without midpalatal expansion) | Simulation B (Maxillary protraction with midpalatal expansion) | |||||
|---|---|---|---|---|---|---|
10° | 20° | 30° | 10° | 20° | 30° | |
Nasal bone | 6.38 | 3.76 | 1.49 | 29.06 | 26.15 | 23.25 |
Maxilla | 23.70 | 17.26 | 12.28 | 54.66 | 43.73 | 38.26 |
Zygomatic bone | 21.47 | 21.83 | 21.85 | 28.26 | 22.89 | 20.04 |
Temporal | 3.80 | 3.55 | 3.28 | 19.06 | 17.16 | 15.25 |
Mandible | 6.65 | 2.96 | 1.55 | 7.82 | 6.25 | 5.00 |