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Open Access 01-12-2016 | Research

Dentin abrasivity of various desensitizing toothpastes

Authors: W. H. Arnold, Ch. Gröger, M. Bizhang, E. A. Naumova

Published in: Head & Face Medicine | Issue 1/2016

Abstract

Background

The aim of this study was to compare the abrasivity of various commercially available toothpastes that claim to reduce dentin hypersensitivity.

Methods

Dentin discs were prepared from 70 human extracted molars. The discs were etched with lemon juice for 5 min, and one half of the discs were covered with aluminum tape. Following this, they were brushed with 6 different toothpastes, simulating a total brushing time of 6 months. As a negative control, discs were brushed with tap water only. The toothpastes contained pro-arginine and calcium carbonate, strontium acetate, stannous fluoride, zinc carbonate and hydroxyapatite, new silica, or tetrapotassium pyrophosphate and hydroxyapatite. After brushing, the height differences between the control halves and the brushed halves were determined with a profilometer and statistically compared using a Mann–Whitney U test for independent variables.

Results

A significant difference (p < 0.001) in height difference between the controls and the toothpaste-treated samples was found in all cases, except for the stannous fluoride-containing toothpaste (p = 0.583). The highest abrasion was found in the toothpaste containing zinc carbonate and hydroxyapatite, and the lowest was found in the toothpaste containing pro-arginine and calcium carbonate.

Conclusions

Desensitizing toothpastes with different desensitizing ingredients have different levels of abrasivity, which may have a negative effect on their desensitizing abilities over a long period of time.

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Title: Dentin abrasivity of various desensitizing toothpastes
Authors: W. H. Arnold
Ch. Gröger
M. Bizhang
E. A. Naumova
Publication date: 01-12-2016
Publisher: BioMed Central
Published in: Head & Face Medicine / Issue 1/2016
Electronic ISSN: 1746-160X
DOI: https://doi.org/10.1186/s13005-016-0113-1

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Dentin abrasivity of various desensitizing toothpastes

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Methods

Results

Conclusions

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