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Table 1 Horizontal measurement in the open and closed tray impression techniques

From: The impact of impression coping geometrical design on accuracy of implant impressions: an experimental study

Impression techniques N Median IQR P value
Open tray High retentive (Osstem) 32 0.011 0.009 0.068
Medium retentive (Straumann) 32 0.015 0.014
Low retentive (SIC) 32 0.020 0.029
Closed tray Triangular (Osstem) 32 0.037 0.056 0.654
Rectangular (Straumann) 32 0.016 0.023
Round SIC 32 0.036 0.036
  1. Kruskal-Wallis test, P value > 0.05 no significance difference