Table 1 Comparison of mean removal torque values (Ncm) for the abutment screws in all groups
Abutment/Number of cycles | Mean removal torque value (Ncm) ± SD | % of mean removal torque value loss compared to the initial | Post hoc Dunnett’s T3 test of mean removal torque (P-value) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
ST/0 | HZ/0 | CT/0 | ST/50,000 | HZ/50,000 | CT/50,000 | ST/1,000,000 | HZ/1,000,000 | |||
ST/0 | 28.64 ± 0.63 | – |  |  |  |  |  |  |  |  |
HZ/0 | 28.43 ± 0.52 | – | 1.000 |  |  |  |  |  |  |  |
CT/0 | 27.44 ± 0.86 | – | 0.621 | 0.769 |  |  |  |  |  |  |
ST/50,000 | 23.94 ± 1.70 | 19.63% | 0.050 | 0.062 | 0.158 |  |  |  |  |  |
HZ/50,000 | 23.23 ± 1.16 | 22.38% | 0.003 | 0.005 | 0.011 | 1.000 |  |  |  |  |
CT/50,000 | 22.46 ± 1.64 | 22.17% | 0.013 | 0.017 | 0.030 | 0.991 | 1.000 |  |  |  |
ST/1,000,000 | 23.71 ± 1.11 | 20.79% | 0.004 | 0.006 | 0.019 | 1.000 | 1.000 | 0.988 |  |  |
HZ/1,000,000 | 21.82 ± 5.60 | 30.29% | 0.562 | 0.591 | 0.748 | 1.000 | 1.000 | 1.000 | 1.000 |  |
CT/1,000,000 | 22.42 ± 2.46 | 22.39% | 0.076 | 0.088 | 0.157 | 0.999 | 1.000 | 1.000 | 0.999 | 1.000 |