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Table 6 Post-hoc tests for Rt (maximum roughness height)

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

Dependent variable Comparison group Compared with Mean difference (unit-μm) Std. error p value
Baseline Rt Group 1 Group 2 − 0.04 0.06 0.924
Group 3 − 0.01 0.06 0.992
Group 4 − 0.03 0.06 0.951
Group 2 Group 3 0.02 0.06 0.987
Group 4 0.005 0.06 1
Group 3 Group 4 − 0.015 0.06 0.995
Post polishing Rt Group 1 Group 2 − 0.0004 0.15 1
Group 3 0.39 0.15 0.062
Group 4 − 1.12* 0.15 < 0.001
Group 2 Group 3 0.39 0.15 0.061
Group 4 − 1.12* 0.15 < 0.001
Group 3 Group 4 − 1.51* 0.15 < 0.001
Difference in Rt Group 1 Group 2 0.04 0.17 0.996
Group 3 0.41 0.17 0.085
Group 4 − 1.08* 0.17 < 0.001
Group 2 Group 3 0.37 0.17 0.141
Group 4 − 1.12* 0.17 < 0.001
Group 3 Group 4 − 1.50* 0.17 < 0.001
  1. Rt maximum roughness height, μm micrometer, p value probability value, *statistical significance