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Table 1 Participants’ characteristics at baseline

From: The change of teeth color, whiteness variations and its psychosocial and self-perception effects when using low vs. high concentration bleaching gels: a one-year follow-up

Baseline features Groups
HP 37.5% HP 6%
Age (years; mean ± SD) 27 ± 7.5
Minimum age (years) 20
Maximum age (years) 54
Male (%) 52%
*L (mean ± SD) 84.41 ± 2.95 86.17 ± 2.81
*a (mean ± SD) 0.08 ± 1.06 0.15 ± 1.24
*b (mean ± SD) 27.96 ± 3.18 28.42 ± 3.68
Baseline Vita bleach SGU median (min:max) 9 (7:11) 9 (7:11)
Baseline Vita classical SGU median (min:max) 9 (9:12) 9 (9:12)
  1. SD Standard deviation