The Open Dentistry Journal


ISSN: 1874-2106 ― Volume 11, 2017
RESEARCH ARTICLE

Effect of 10% Strontium Chloride and 5% Potassium Nitrate with Fluoride on Bleached Bovine Enamel



Cristiane de Melo Alencar, Victor Feliz Pedrinha, Jesuína Lamartine Nogueira Araújo, Renata Antunes Esteves, Ana Daniela Silva da Silveira, Cecy Martins Silva*
Faculty of Dentistry, Federal University of Pará, Pará, Brazil

Abstract

Background:

Dental whitening has been increasingly sought out to improve dental aesthetics, but may cause chemical and morphological changes in dental enamel surfaces.

Objective:

This study evaluated in vitro the effect of 10% strontium chloride and 5% potassium nitrate with fluoride on bovine enamel, through tristimulus colorimetry, Knoop microhardness (KHN), and roughness after bleaching with 35% hydrogen peroxide (HP).

Methods:

The specimens were divided into three groups (n=15): GControl received bleaching treatment with 35% HP; GNitrate received bleaching with 35% HP followed by the application of 5% potassium nitrate with 2% sodium fluoride; and GStrontium received bleaching with 35% HP followed by the application of 10% strontium chloride on the enamel. Next, five specimens of each experimental group were subjected to KHN and tristimulus colorimetry tests, and 10 specimens were subjected to surface roughness (SR) tests. The values obtained for the different groups were compared through analysis of variance (ANOVA) followed by a post-hoc Tukey-Kramer test in addition to Student’s T-test for paired data.

Results:

In the intergroup comparison, KHN final differed statistically (p<0.05). The mean SR final of the experimental groups differed statistically from the GControl group (p<0.05). In addition, the groups did not differ in color variation (p>0.05).

Conclusion:

10% strontium chloride and 5% potassium nitrate combined with 2% fluoride downplayed morphological changes to the enamel, without interfering with the effectiveness of the bleaching process.

Keywords: Tooth bleaching, Dental enamel, Dentin desensitizing agents, Strontium, Tooth remineralization, 5% Potassium nitrate.


Article Information


Identifiers and Pagination:

Year: 2017
Volume: 11
First Page: 476
Last Page: 484
Publisher Id: TODENTJ-11-476
DOI: 10.2174/1874210601711010476

Article History:

Received Date: 25/03/2017
Revision Received Date: 19/05/2017
Acceptance Date: 17/07/2017
Electronic publication date: 31/08/2017
Collection year: 2017

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© 2017 Alencar et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the Faculty of Dentistry, Federal University of Pará, Dos Mundurucus Street - 822/903, 66025-66, Jurunas, Belém, Pará, Brazil, Tel: (+55) 91-991144905; E-mail: cecymsilva@gmail.com


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