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Table 1 Mean static and cyclic shear bond strengths, standard deviations, and results of the statistical tests

From: Effects of cyclic loading on the shear bond strength of metal orthodontic brackets bonded to resin composite veneer surface using different conditioning protocols

Group Meansaand standard deviation (MPa) t Test P value (static vs. cyclic) CSBS/SSBS (%)
  Static shear bond strength Cyclic shear bond strength   
Diamond bur 6.44 ± 0.12 A 5.85 ± 0.03 A >0.001 90.83
Microetcher 6.01 ± 0.02 B 5.31 ± 0.04 A >0.001 88.35
Phosphoric acid 5.14 ± 0.03 C 3.25 ± 0.03 C <0.001 63.22
Control 5.04 ± 0.05 C 3.84 ± 0.93 C <0.001 76.19
  1. aMeans with the same letters in the same column are not significantly different at P < 0.05, according to the Scheffe test.