From: Stress distribution patterns at mini-implant site during retraction and intrusion—a three-dimensional finite element study
FE model
Surface area (mm2)
Cortical bone
Whole bone
1a
7.76
14.2
1b
4.89
19.75
2a
6.84
23.98
2b
5.12
29.45
3a
3.88
12.24
3b
3.23
15.22
4a
3.84
19.05
4b
3.13
21.91