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Table 2 Mean trueness and its standard deviation (SD) in micrometers (μm) with single crown (SC), partial prosthesis (PP) and full-arch (FA), and p values testing the scanner by context interaction. N = 10 scans for each scanner and implant type

From: Trueness and precision of 5 intraoral scanners in the impressions of single and multiple implants: a comparative in vitro study

Scanner Single Crown (SC) Partial prosthesis (PP) Full arch (FA) p-value1
Mean ± SD Mean ± SD Mean ± SD
Trios 3® 22.3 ± 0.5† 28.5 ± 0.5†,‡,• 46.3 ± 4.9†,‡,• <  0.0001
CS 3600® 15.2 ± 0.8‡,#,§ 23.0 ± 1.1^,§,# 44.9 ± 8.9^,§,# <  0.0001
Emerald® 43.1 ± 11.5†,‡,•,^ 49.3 ± 5.5†,^,° 66.3 ± 5.6†,^,° <  0.0001
DWIO® 27.8 ± 3.2#,• 49.8 ± 5.0‡,§,* 92.1 ± 24.1‡,§,°,* <  0.0001
Omnicam® 28.4 ± 4.5§,^ 38.1 ± 8.8•,#,°,* 70.4 ± 11.9•,#,* <  0.0001
  1. The same symbol after SD indicates differences in trueness between scanner pairs (Tukey-adjustment for multiple comparison). Minimum significant difference across scanners: 7.3 μm, 6.6 μm, 16.8 μm for single crown (SC), partial prosthesis (PP) and full arch (FA), respectively. 1p-value testing the interaction between scanner and context (SC vs. PP vs. FA) from non-parametric, Kruskall-Wallis test. A p-value > 0.05 indicates no difference in scanner trueness according to the context