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Table 4 Intergroup differences of PI and GBI scores, salivary markers

From: Changes in the oral environment after placement of lingual and labial orthodontic appliances

  Plaque index Gingival bleeding index Salivary flow rate (ml/min) Buffering capacity (pH)
  T 0 (mean ± SD) T 1 (mean ± SD) T 2 (mean ± SD) T 0 (mean ± SD) T 1 (mean ± SD) T 2 (mean ± SD) T 0 (mean ± SD) T 1 (mean ± SD) T 2 (mean ± SD) T 0 (mean ± SD) T 1 (mean ± SD) T 2 (mean ± SD)
Lingual technique (n = 10) 0.47 ± 0.18 0.56 ± 0.15 0.59 ± 0.16 0.18 ± 0.13 0.22 ± 0.07 0.29 ± 0.19 1.11 ± 0.47 1.25 ± 0.38 1.39 ± 0.46 5.20 ± 0.79 5.30 ± 0.85 5.00 ± 0.88
Labial technique (n = 10) 0.42 ± 0.17 0.52 ± 0.25 0.43 ± 0.20 0.31 ± 0.21 0.45 ± 0.17 0.33 ± 0.13 1.06 ± 0.65 1.32 ± 0.45 1.50 ± 1.22 5.35 ± 0.41 5.75 ± 0.79 5.50 ± 0.41
p value NS NS NS NS ** NS NS NS NS NS NS NS
  1. NS, not significant. **p < 0.01 (Mann-Whitney U test).