Collar length | Subgroups | T test | |||
---|---|---|---|---|---|
A (2 mm collar length) | B (4 mm collar length) | t | P value | ||
Initial RTV | Mean ± SD | 22.3 ± 0.4 | 22.3 ± 0.5 | 0.9 | 0.3 |
Postload RTV | Mean ± SD | 20.9 ± 1.9 | 19.6 ± 2.5 | 2.5 | 0.014* |
Difference between initial and postload RTV | Mean ± SD | 1.4 ± 1.7 | 2.6 ± 2.3 | ||
Paired test | P value | < 0.001* | < 0.001* |