Effect of Whitening Dentifrices on Short‐Term Color Stability and Tooth Sensitivity After In‐Office Bleaching: A Randomized Single‐Blind Clinical Trial
Randomized trial evaluates whitening dentifrices' impact on color stability and sensitivity in participants after bleaching, suggesting varying effects over time.
Key Points
This trial aimed to evaluate the impact of different whitening dentifrices on color stability and tooth sensitivity after bleaching.
Randomized single-blind clinical trial with 120 participants treated with 40% hydrogen peroxide.
Participants were assigned to one control and five whitening dentifrice groups, each containing different mechanisms.
Color changes were measured spectrophotometrically using the CIELAB system, and sensitivity was assessed using a numeric rating scale.
No significant differences in color change among dentifrice groups at any time point (p > 0.05).
A significant time × group interaction was detected (p < 0.05), primarily due to control group changes at 3 months.
Tooth sensitivity peaked at 48 hours, resolving by Day 7, with the dentifrice using desensitizing agents showing lower early sensitivity scores (p < 0.05).