Skip to main content

Advertisement

Table 2 Comparison of difference in Ra (average roughness) between baseline and post polishing roughness

From: Comparative evaluation of enamel surface roughness after debonding using four finishing and polishing systems for residual resin removal—an in vitro study

R a Mean baseline roughness Mean post polishing roughness Mean difference Ra
Group 1 0.86 μm 3.36 μm 2.50 μm
Group 2 0.95 μm 3.17 μm 2.22 μm
Group 3 0.82 μm 1.99 μm 1.16 μm
Group 4 0.84 μm 4.62 μm 3.78 μm
p value 0.666 < 0.001 < 0.001
  1. Ra average roughness, μm micrometer, p value probability value