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