Role of desensitizing/whitening dentifrices in enamel wear
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To analyze the impact of desensitizing (D) and/or whitening (W) dentifrices on erosion and erosion-abrasion. Enamel specimens were allocated into 10 groups. For abrasion, 30,000 brushing strokes were performed and surface roughness (SR) was evaluated. Erosion-abrasion consisted of 1 % citric acid (2min), artificial saliva (60min); 6×/day; 5 days. Toothbrushing was carried out 2×/day (45 strokes). Surface loss (SL) was determined with an optical profilometer. Data were statistically analyzed.

Only one dentifrice increased surface roughness of enamel to a higher degree than brushing with saliva. Brushing with the test dentifrices did not cause higher enamel erosive wear than brushing with saliva. This study enhances our knowledge on the effect of desensitizing and whitening dentifrices, indicating that they do not worsen enamel loss due to abrasion and they might be a safe option for individuals with erosive tooth wear.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0300571220301366
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