Abstract：
PURPOSE:To compare the effect of toothbrushing abrasion with hydrated silica-based whitening and regular toothpastes on root dentin using contact profilometry. MATERIALS AND METHODS:Ninety dentin specimens (4 x 4 x 2 mm) were randomly divided into five experimental groups (n = 18) according to the toothpaste: three whitening (W1, W2 and W3) and two regular toothpastes (R1 and R2) produced by two different manufacturers. Using a brushing machine, each specimen was brushed with a constant load of 300 g for 2500 cycles (4.5 cycles/s). The toothpastes were diluted at a ratio of 1:3 w/w (dentifrice:distilled water). The brush diamond tip of the profilometer moved at a constant speed of 0.05 mm/s with a force of 0.7 mN. RESULTS:The average value of brushing abrasion in μm (mean ± SD) was obtained from five consecutive measurements of each specimen: W1 = 8.86 ± 1.58, W2 = 7.59 ± 1.04, W3 = 8.27 ± 2.39, R1 = 2.89 ± 1.05 and R2= 2.94 ± 1.29. There was a significant difference between groups (ANOVA, p<0.0001). Post-hoc Tukey's test for multiple comparisons showed differences between all the whitening and regular toothpastes, but not among the whitening nor among the regular toothpastes. CONCLUSION:The whitening toothpastes tested can cause more dentin abrasion than the regular ones.
journal_name
Oral Health Prev Dentjournal_title
Oral health & preventive dentistryauthors
Vieira GH,Nogueira MB,Gaio EJ,Rosing CK,Santiago SL,Rego ROdoi
10.3290/j.ohpd.a36465subject
Has Abstractpub_date
2016-01-01 00:00:00pages
547-553issue
6eissn
1602-1622issn
1757-9996pii
36465journal_volume
14pub_type
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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doi：
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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journal_title：Oral health & preventive dentistry
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doi：
更新日期：2006-01-01 00:00:00
