Abstract:
OBJECTIVES:This study evaluated the erosive tooth wear promoted by commercial whitening toothpastes on eroded dentin in vitro. DESIGN:Ninety bovine roots were embedded, polished and subjected to the baseline profile analysis. The samples were protected in 2/3 of the dentin surface and were randomly assigned to 6 groups (n = 15/group): Oral-B 3D White; Close-up Diamond Attraction Power White; Sorriso Xtreme White 4D; Colgate Luminous White; Crest and erosion only. All samples were submitted to erosive pH cycles (4 × 90 s in 0.1% citric acid, pH 2.5, per day) and abrasive challenges (2 × 15 s, per day) for 7 days. The samples were subjected to abrasion, using toothbrushing machine, soft toothbrushes and slurries of the tested toothpastes (1.5 N, 1:3 water). Between the challenges, the samples were immersed in artificial saliva. The final profile was overlaid to the baseline profile for the calculation of the erosive dentin wear (μm). The data were subjected to Kruskal-Wallis/Dunn tests (p < 0.05). RESULTS:Colgate Luminous White (4.7 μm) and Sorriso Xtreme White 4D (4.0 μm) promoted the highest wear, similarly to Oral-B 3D White (2.3 μm). Oral-B 3D White promoted similar wear compared to Crest (1.1 μm) and Close-up Diamond Attraction Power White (1.2 μm); however, it induced significant higher dentin wear compared to erosion only (1.0 μm). Close-up Diamond Attraction Power White and Crest did not increase the erosive wear compared to erosion only. CONCLUSION:Some whitening toothpastes increase the wear of eroded dentin, which should be considered by the dentist when prescribing them to patient with root exposure.
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Vertuan M,de Souza BM,Machado PF,Mosquim V,Magalhães ACdoi
10.1016/j.archoralbio.2019.104580subject
Has Abstractpub_date
2020-01-01 00:00:00pages
104580eissn
0003-9969issn
1879-1506pii
S0003-9969(19)30586-2journal_volume
109pub_type
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