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Progress in Orthodontics

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.
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