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Table 3 Mean precision 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® 15.2 ± 0.8†,‡,• 21.0 ± 1.9‡,• 35.6 ± 3.4†,‡,• <.0001
CS 3600® 11.3 ± 1.1^,§,# 17.0 ± 2.3^,§,# 35.7 ± 4.3^,§,# <.0001
Emerald® 32.8 ± 10.7†,^ 29.9 ± 8.9^,° 61.5 ± 18.1†,^,°,* 0.0007
DWIO® 27.1 ± 10.7‡,§ 34.8 ± 10.8‡,§ 111.0 ± 24.8‡,§,°,ç <.0001
Omnicam® 30.6 ± 3.3•,# 43.2 ± 9.4•,#,° 89.3 ± 14.0•,#,*,ç <.0001
  1. The same symbol after SD indicates differences in precision between scanner pairs (Tukey-adjustment for multiple comparison). Minimum significant difference across scanners: 8.8 μm, 9.8 μm, 19.4 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 precision according to the context