Table 1 Properties of simulated materials
From: 3D FEM comparison of lingual and labial orthodontics in en masse retraction
| Young's modulus (N/mm) | Poisson's ratio | |
|---|---|---|
| Cancellous bone | 1370 | 0.30 |
| Cortical bone | 13700 | 0.26 |
| PDL | 0.6668 | 0.49 |
| Tooth | 20000 | 0.30 |
| Bracket and SS wire | 214000 | 0.30 |