Table 2. Reproducibility in the OS, FS, and ES groups using a blue light model scanner to scan abutment teeth (n = 8).
| Group (μm) | OS | FS | ES | P valuec | |||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | ||
| RMS | 8.2a | 1.5 | 10.1a,b | 1.5 | 12.7b | 5.8 | .026 |
| SD | 8.1a | 1.5 | 9.5a,b | 1.3 | 11.7a,b | 5.1 | .073 |
| + | 5.8 | 1.1 | 6.3 | 1.2 | 6.4 | 1.3 | .492 |
| - | 6.5a | 1.3 | 8.6b | 1.6 | 10.4b | 3.9 | .010 |
OS group, abutments were scanned one by one on the multi-die tray; FS group, abutments were scanned in groups of four on the multi-die tray; ES group, abutments were scanned in groups of eight on the multi-die tray; RMS, root mean square; SD, standard deviation.
a,b Values followed by the same letter in the row are statistically similar among the three groups (Mann-Whitney U-test with Bonferroni's correction), c Kruskal-Wallis H test.