From: In vitro tooth whitening effect of two medicated chewing gums compared to a whitening gum and saliva
ΔE | A Nicotine chewing gum | B Nicotine chewing gum | C Whitening chewing gum | Saliva |
---|---|---|---|---|
60 min | 10.80 ± 1.96** | 10.08 ± 1.69** | 5.00 ± 2.27* | 1.03 ± 0.43 |
120 min | 14.91 ± 2.12** | 13.15 ± 1.57** | 6.55 ± 2.24* | 0.65 ± 0.29 |