Dentin abrasivity of various desensitizing toothpastes

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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.

Keywords:
Toothpaste, Dentin, Dentin tubules, Root dentin, Hypersensitivity

Autoři: W. H. Arnold ^1*; Ch. Gröger ¹; M. Bizhang ²; E. A. Naumova ¹
Působiště autorů: Department of Biological and Material Sciences in Dentistry, School of Dentistry, Witten/Herdecke University, Witten, Germany. ¹; Department of Preventive and Operative Dentistry, School of Dentistry, Witten/Herdecke University, Witten, Germany. ²
Vyšlo v časopise: Head & Face Medicine 2016, 12:16
Kategorie: Research
prolekare.web.journal.doi_sk: https://doi.org/10.1186/s13005-016-0113-1

© 2016 Arnold et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
The electronic version of this article is the complete one and can be found online at: http://head-face-med.biomedcentral.com/articles/10.1186/s13005-016-0113-1.

Souhrn

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

Keywords:
Toothpaste, Dentin, Dentin tubules, Root dentin, Hypersensitivity

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