Table 2.
Deviations (mean ± standard deviation (SD) [µm]) of the pooled data of linear distances (D1_2, D1_3, D1_4, D2_3, D2_4, D3_4) of six impression techniques (CS = CS 3800, IT = iTero Element 5D, ME = Medit i700, PS = Primescan, TR = Trios 4, CVI = conventional impression) for all groups and statistical analysis for trueness (upper right part) and precision (lower left part, presented in bold type) according to ISO 5725 [6].
| Impression Technique | Group | Mean (Trueness) ± SD (Precision) [µm] | Group A | Group B | Group C |
|---|---|---|---|---|---|
| CS | A | 87.1 ± 51.6 | - | 0.237 | 0.533 |
| B | 107.3 ± 71.1 | 0.374 | - | >0.999 | |
| C | 102.2 ± 60.8 | 0.108 | 0.639 | - | |
| IT | A | 101.5 ± 97.1 | - | >0.999 | 0.784 |
| B | 90.5 ± 78.3 | 0.118 | - | 0.502 | |
| C | 75.0 ± 96.4 | 0.986 | 0.163 | - | |
| ME | A | 61.5 ± 81.7 | - | 0.881 | >0.999 |
| B | 62.2 ± 66.0 | 0.695 | - | 0.314 | |
| C | 49.9 ± 48.4 | 0.187 | 0.295 | - | |
| PS | A | 60.7 ± 55.1 | - | 0.649 | >0.999 |
| B | 53.6 ± 49.6 | 0.302 | - | >0.999 | |
| C | 52.2 ± 40.4 | 0.475 | 0.723 | - | |
| TR | A | 69.4 ± 79.3 | - | >0.999 | 0.814 |
| B | 55.0 ± 53.4 | 0.013 | - | >0.999 | |
| C | 50.6 ± 64.3 | 0.746 | 0.041 | - | |
| CVI | A | 30.5 ± 31.2 | - | 0.012 | >0.999 |
| B | 43.5 ± 30.4 | 0.179 | - | 0.020 | |
| C | 30.3 ± 25.3 | 0.397 | 0.009 | - |