Table 5 Tunnel parameters
AMP group | TT group | P value | |
|---|---|---|---|
Tunnel length (Mean ± SD,range,mm) | 37.3 ± 3.9 (28–46) | 42.0 ± 4.8 (32–55) | <.01 |
Tunnel position | |||
Depth ratio (Mean ± SD,range,%) | 20.3 ± 2.0 (17–23) | 22.1 ± 2.1 (19–26) | <.01 |
Height ratio (Mean ± SD,range,%) | 33.3 ± 1.8 (30–36) | 30.2 ± 1.7 (27–33) | <.01 |