Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Oropharynx area according to the angle of expansion.
| Location | Expansion angle (°) | The angle formed by the body of the mandible and the cervical vertebra No. 7 (°) | Oropharynx area (mm2) | Increase compared to origin (times) |
|---|---|---|---|---|
| Origin point (θ0) | 0 | 35.0 | 573 | 0 |
| 1 (θ1) | 5.03 | 40.0 | 765 | 1.33 |
| 2 (θ2) | 5.01 | 45.0 | 798 | 1.39 |
| 3 (θ3) | 4.95 | 50.0 | 886 | 1.54 |
| 4 (θ4) | 4.99 | 55.0 | 935 | 1.63 |
| 5 (θ5) | 5.02 | 60.0 | 987 | 1.72 |
