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Table 2 Mean and Standard deviation of Δa, Δb, ΔL, and ΔE parameters in different experimental groups

From: Comparison the effect of charcoal-containing, hydrogen peroxide-containing, and abrasive whitening toothpastes on color stability of a resin composite; an in vitro study

 

Control

GB

GO

GT

GP

Δa

− 0/01 ± 0/58a

− 0/04 ± 0/28a

− 0/23 ± 0/37a

0/15 ± 0/29a

− 0/24 ± 0/33a

Δb

− 0/56 ± 1/76ab

− 1/39 ± 2/33ab

− 0/49 ± 1/91ab

1/1 ± 2/48a

− 1/77 ± 1/62b

ΔL

− 4/16 ± 2/02a

− 3/74 ± 2/67 a

− 2/09 ± 2/19ab

− 0/1 ± 3/18b

− 3/8 ± 1/43a

ΔE

4/56 ± 2/01b

4/74 ± 2/3b

2/9 ± 2/09b

3/52 ± 1/95b

4/37 ± 1/78b

  1. Control; distilled water, GB: Bencer, GO: Optic White, GT: Total White, and GP: Perfect White. Different lowercase letters indicate significant differences (p < 0.05). The same lowercase letter indicates lack of statistically significant difference between the two subgroups (p > 0.05)