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Table 2 Average (standard deviation) according to the experimental groups (n = 15)

From: The effect of green tea on the shear strength of brackets after home whitening treatment

Treatments Sodium ascorbate Green tea
Without whitening 18.07 ± 4.10Aa 18.26 ± 4.68Aa
With whitening 14.85 ± 2.49Ab 14.80 ± 5.43Ab
Without whitening 17.61 ± 4.12
Only whitened 9.81 ± 3.61§
  1. Averages followed by different capital letters differed statistically in Tukey’s test (p < 0.05) comparing the antioxidants
  2. Averages followed by different lowercase letters differed statistically in Tukey’s test (p < 0.05) for each antioxidant
  3. §Statistically different from the positive control group in Dunnett’s test (p < 0.05)
  4. Statistically different from the negative control group in Dunnett’s test (p < 0.05)
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