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Changes in lightness (ΔL) of extrinsic dental stain |
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| ΔL |
A Nicotine chewing gum |
B Nicotine chewing gum |
C Whitening chewing gum |
Saliva |
|
|
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| 60 min |
9.53 ± 1.77** |
8.74 ± 1.73** |
3.99 ± 2.13* |
-0.16 ± 0.55 |
| 120 min |
13.76 ± 2.32** |
11.97 ± .1.65** |
5.52 ± 2.26* |
0.04 ± 0.48 |
|
Lightness change (ΔL) in extrinsic stain scores by chewing gums A, B and C and saliva after 60 min or 120 min of in vitro mastication (mean ± standard deviation of 16 samples (n = 16)). Values with the same number of asterisks are not statistically different. Gums A and B versus C or saliva, as well as C versus saliva, are significantly different (at p < 0.01) at both 60 and 120 min. | ||||
Moore et al. BMC Oral Health 2008 8:23 doi:10.1186/1472-6831-8-23 |
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