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Table 3 Mean differences and standard deviations of translucency parameter (TP) after staining (ΔTPst-i), bleaching (ΔTPbl-st), and the residual difference compared to baseline (ΔTPbl-i)

From: Effect of staining beverages and bleaching on optical properties of a CAD/CAM nanohybrid and nanoceramic restorative material

Staining solutions

CAD/CAM restorative materials

LU

GR

ΔTPst-i

  

 Distilled water

− 0.15 ± 0.03Aa

− 0.13 ± 0.03Aa

 Coffee

− 0.62 ± 0.07Ab

− 0.56 ± 0.07Bb

 Tea

− 0.51 ± 0.04Acd

− 0.53 ± 0.06Ab

 Cola

− 0.42 ± 0.04Ae

− 0.39 ± 0.05Ac

 Ginger

− 0.55 ± 0.07Abc

− 0.54 ± 0.07Ab

ΔTPbl-st

  

 Distilled water

− 0.09 ± 0.03Aa

− 0.13 ± 0.02Ba

 Coffee

0.46 ± 0.06Ab

0.33 ± 0.04Bbc

 Tea

0.38 ± 0.05Abc

0.37 ± 0.05Ab

 Cola

0.16 ± 0.04Ad

0.17 ± 0.04Ad

 Ginger

0.19 ± 0.04Ad

0.31 ± 0.04Bc

ΔTPbl-i

  

 Distilled water

− 0.24 ± 0.03Aa

− 0.22 ± 0.03Aa

 Coffee

− 0.17 ± 0.02Ab

− 0.24 ± 0.04Ba

 Tea

− 0.14 ± 0.03Ab

− 0.13 ± 0.03Ab

 Cola

− 0.26 ± 0.05Aa

− 0.22 ± 0.04Ba

 Ginger

− 0.36 ± 0.06Ac

− 0.25 ± 0.04Ba

  1. Mean values represented with different superscript lowercase letter (column) are significantly different (P < 0.05)
  2. Mean values represented with different superscript uppercase letter (row) are significantly different (P < 0.05)