Table 1. The absolute mean values (± SD) of concentricity measurements, marginal discrepancy, rotational freedom, and torque loss measurements of the prefabricated and customized abutments with different connections.
| Parameter | External prefabricated | External customized | Internal prefabricated | Internal customized | ||||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| Horizontal discrepancy (mm) | 0.002 | 0.000 | 0.004 | 0.001 | 0.059 | 0.024 | 0.039 | 0.018 |
| Vertical discrepancy (mm) | 0.000 | 0.000 | 0.000 | 0.001 | 0.063 | 0.006 | 0.048 | 0.011 |
| Rotational freedom (Deg) | 0.970 | 0.110 | 7.911 | 0.545 | 0.000 | 0.000 | 4.645 | 0.224 |
| Concentricity (mm) | 0.014 | 0.001 | 0.038 | 0.006 | 0.014 | 0.002 | 0.034 | 0.007 |
| Torque loss (Ncm) | 13.42 | 1.12 | 14.20 | 3.43 | 11.43 | 2.22 | 11.86 | 5.90 |