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Table 4 Vertical discrepancy and impression technique accuracy

From: Implant impression accuracy of parallel and non-parallel implants: a comparative in-vitro analysis of open and closed tray techniques

Variables Impression technique Vertical discrepancy Total P value
Yes (%) No (%)
Impression technique Open 20 (20.8%) 76 (79.2%) 96 0.037*
Closed 32 (33.3%) 64 (66.7%) 96
Total 52 (27%) 140 (73%) 192
Parallel implant Open 8 (16.7%) 40 (83.3%) 48 0.112
Closed 14 (29.2%) 34 (70.8%) 48
Total 22 (23%) 74 (77%) 96
Non-parallel implant Open 12 (25%) 36 (75%) 48 0.135
Closed 18 (37.5%) 30 (62.5%) 48
Total 30 (31%) 66 (69%) 96
  1. Chi-square test, P value < 0.05 statistically significant
  2. *The differences between open and closed tray techniques accuracy regarding vertical discrepancy