Journal of Dental Hygiene Science : eISSN 2233-7679

Table 3

Luminosity (L), Chromaticity a (a), and Chromaticity b (b) Changes for Different Esthetic Restorative Materials over Time in Coffee Staining

Color measurementDifferenceSelf-curing GILight-curing GIFlowable resinPackable resinp-value
LBefore-1 week after staining3.10±2.58a13.14±5.21b1.63±0.80a2.09±0.89a<0.001
Before-1 week after whitening−0.96±3.22a6.32±4.35b0.67±1.45a−0.07±1.65a<0.001
Before-2 weeks after whitening4.32±7.976.63±11.51−0.95±4.291.80±5.050.209
p-value0.5600.0320.1660.208
aBefore-1 week after staining0.15±0.24a−4.51±0.87b−0.86±0.56c−1.30±0.20c<0.001
Before-1 week after whitening−0.04±0.18a−2.17±0.51b−0.79±0.35c−1.22±0.24c<0.001
Before-2 weeks after whitening−0.27±0.68a−1.35±1.15b−0.68±0.37ab−1.57±0.49b0.002
p-value0.115<0.0010.2920.113
bBefore-1 week after staining−1.61±1.93a−14.78±1.67b−2.72±1.63a−0.95±1.23a<0.001
Before-1 week after whitening−0.48±2.59a−7.87±1.74b0.03±1.37ac2.27±1.18c<0.001
Before-2 weeks after whitening0.04±2.61a−4.37±1.73b0.77±0.97a3.63±1.33c<0.001
p-value0.235<0.001<0.001<0.001

Values are presented as mean±standard deviation.

GI: glass ionomer.

p-value: repeated measure ANOVA.

a,b,cTukey post-hoc analysis.

J Dent Hyg Sci 2021;21:178-84 https://doi.org/10.17135/jdhs.2021.21.3.178
© 2021 J Dent Hyg Sci