IADR Abstract Archives
Bleaching efficacy of a non abrasive whitening toothpaste
Objectives: The aim of this clinical study was to evaluate the effectiveness of a whitening tooth paste containing 3% of carbamide peroxide and lactoperoxydase.
Methods: Thirty four volunteers were included. They were instructed to brush their teeth using an enzymatic-activated dentifrice in particular procedure for three weeks. Color was recorded before and after the treatment using Vita Easy Shade spectrophotometer. L (tooth color lightness), a (the displacement along the red-green axis) and b (the displacement along the yellow-blue axis) differences were measured before and after treatment using the paired t and the Wilcoxon signed-rank tests. Color changes (ΔE) were calculated using these measurements.
Results: Five subjects were excluded. ΔE was 4.03. For the set of 348 teeth, a greater tendency towards green (lower a*) and blue (lower b*) was observed (p<0.05). There were no significant differences in the lightness after treatment. The mandibular central incisors showed greater towards green (lower a*) and blue (lower b*). Bleaching effectiveness was observed for both upper and lower central as well as for lateral mandibular incisors.
Conclusions: Based on these results, it may be concluded that brushing with an enzymatic-activated dentifrice is effective for whitening teeth.
Methods: Thirty four volunteers were included. They were instructed to brush their teeth using an enzymatic-activated dentifrice in particular procedure for three weeks. Color was recorded before and after the treatment using Vita Easy Shade spectrophotometer. L (tooth color lightness), a (the displacement along the red-green axis) and b (the displacement along the yellow-blue axis) differences were measured before and after treatment using the paired t and the Wilcoxon signed-rank tests. Color changes (ΔE) were calculated using these measurements.
Results: Five subjects were excluded. ΔE was 4.03. For the set of 348 teeth, a greater tendency towards green (lower a*) and blue (lower b*) was observed (p<0.05). There were no significant differences in the lightness after treatment. The mandibular central incisors showed greater towards green (lower a*) and blue (lower b*). Bleaching effectiveness was observed for both upper and lower central as well as for lateral mandibular incisors.
Conclusions: Based on these results, it may be concluded that brushing with an enzymatic-activated dentifrice is effective for whitening teeth.