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Table 4 Comparison of difference in Rz (mean roughness depth) 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 z

Mean baseline roughness depth

Mean post polishing roughness depth

Mean difference Rt

Group 1

2.10 μm

8.19 μm

6.09 μm

Group 2

2.02 μm

8.40 μm

6.38 μm

Group 3

2.11 μm

7.95 μm

5.84 μm

Group 4

2.04 μm

10.93 μm

8.89 μm

p value

0.702

< 0.001

< 0.001

  1. Rz mean roughness depth, μm micrometer, p value probability value