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Table 6 Correlation between resistance to sliding and bracket slot dimension relative to horizontal displacement setting

From: Analysis of the characteristics of slot design affecting resistance to sliding during active archwire configurations

   Bracket depth slot dimension Bracket width slot dimension
Number of evaluated brackets Type of bracket r P value Significance r P value Significance
5 (1), (2), (3), (4), (5) 0.2 0.391 ns -0.3 0.341 ns
4 (2), (3), (4), (5) 0.4 0.375 ns -0.4 0.375 ns
4 (1), (3), (4), (5) 0.4 0.375 ns -0.8 0.166 ns
4 (1), (2), (4), (5) 0.4 0.375 ns -0.4 0.375 ns
4 (1), (2), (3), (5) -0.6 0.208 ns -0.2 0.458 ns
4 (1), (2), (3), (4) 0.4 0.375 ns 0.4 0.375 ns
  1. Spearman's rank correlation coefficient. Damon SL II (1), In-Ovation (2), Quick (3), Synergy (4), Time 2 (5), *p < 0.05; not significant, ns.