Clinical Study of the Whitening Dentifrices on Tooth Color and Sensitivity

Clinical, Controlled, Double-blind Study on the Effect of Whitening Dentifrices on Tooth Color and Tooth Sensitivity

Objective:The aim of this clinical study was to evaluate tooth color alteration (ΔE) and tooth sensitivity (TS) in patients that used two commercial brand-whitening dentifrices for four weeks. Sixty participants were selected in accordance with inclusion and exclusion criteria and randomly allocated in three groups (n=20): G1-Colgate Luminous White®, G2- Close up White Now® and G3- Sorriso® dentifrice (placebo). Then, participants received the instructions to use only the blinded supplied dentifrice and toothbrush to make the habitual oral hygiene, three times per day during four weeks. Evaluators assessed tooth color (CIEL*a*b system) and TS (VAS scale) at baseline and every week (assessment points 1, 2, 3 and 4). Two-way ANOVA and posterior Tukey and Friedman test analyzed data (α = 0.05).

Inclusion Criteria:

• At least six anterior teeth without restorations
• Participants should have good general and oral health (no dental caries and periodontal disease)

Exclusion Criteria:

• Tooth sensitivity
• Any condition that could cause tooth sensitivity (non-carious cervical lesions, dentin exposure)
• Participants following orthodontic treatment
• Smokers