Table 1.
Stress in two points from the models of maxillary central incisors during retraction force loading
| Node | CRA 166.7° | Stress in C1 | CRA 173.4° | Stress in C2 | C1-C2 difference |
|---|---|---|---|---|---|
| 7,208 | B1 | 0.0118219 | B1 | 0.0152682 | -0.0034462 |
| 7,533 | B2 | 0.0011850 | B2 | 0.0021201 | -0.0009350 |
| 7,807 | B3 | 0.0101753 | B3 | 0.0134645 | -0.0032891 |
| 7,195 | P1 | 0.0096988 | P1 | 0.0135697 | -0.0038709 |
| 7,502 | P2 | 0.0033937 | P2 | 0.0037428 | -0.0003491 |
| 7,763 | P3 | 0.0112585 | P3 | 0.0143661 | -0.0031076 |
| 7,185 | A | 0.0049120 | A | 0.0065409 | -0.0016289 |
A, apex; B1, a node in the labial surface, near the apex; B2, a node in the labial surface, near the middle of the root; B3, a node in the labial surface, near the cervix; CRA, crown-root angle; P1, a node in the palatal surface, near the apex; P2, a node in the palatal surface, near the middle of the root; P3, a node in the palatal surface, near the cervix. Stress in the two points from the models of maxillary central incisors with crown-root angles of 166.7° and 173.4° during retraction force loading and the differences between these corresponding points.