The Open Dentistry Journal




ISSN: 1874-2106 ― Volume 13, 2019
RESEARCH ARTICLE

Influence of Time Intervals between Bleaching Procedures on Enamel Microhardness and Surface Roughness



Roberta Pimentel de Oliveira*, Juliana Costa Pereira Baia, Mara Eliane Soares Ribeiro, Mario Honorato da Silva e Souza Junior, Sandro Cordeiro Loretto
Faculty of Dentistry, Federal University of Para, Augusto Corrêa Street, number 1. Guamá, Belém, Para, Brazil

Abstract

Background:

Dental bleaching has been increasingly sought out to improve dental aesthetics, but it may cause changes in dental enamel.

Objective:

To assess the influence of different time intervals on bleaching gel applications with regard to the Microhardness (MH) and Surface Roughness (SR) on dental enamel.

Material and Methods:

Forty bovine incisors were randomly divided into two groups (G1 and G2) and both were bleached with 35% Hydrogen Peroxide (HP35) (n=20; G1: seven-day interval and G2: two-day interval). The MH and SR tests were performed before bleaching (T0) and after the first (T1), second (T2), and third (T3) bleaching gel applications. The specimens were stored in artificial saliva between each application (37°C). The data were analyzed using the student’s t-test (p ≤ 0.05) for dependent samples.

Results:

The reduced time interval (two days) led to a significant reduction in MH, while MH was not affected during the seven-day interval. The SR results increased regardless of the bleaching gel application time interval.

Conclusion:

The decreased time interval of two days between bleaching gel applications caused changes in MH but did not influence the SR of dental enamel.

Keywords: Dental bleaching, Bleaching agents, Peroxides, Hydrogen peroxide, Dental enamel, Hardness tests.


Article Information


Identifiers and Pagination:

Year: 2018
Volume: 12
First Page: 555
Last Page: 559
Publisher Id: TODENTJ-12-555
DOI: 10.2174/1874210601812010555

Article History:

Received Date: 10/3/2018
Revision Received Date: 20/6/2018
Acceptance Date: 10/7/2018
Electronic publication date: 13/7/2018
Collection year: 2018

Article Metrics:

CrossRef Citations:
0

Total Statistics:

Full-Text HTML Views: 1723
Abstract HTML Views: 1210
PDF Downloads: 350
ePub Downloads: 226
Total Views/Downloads: 3509

Unique Statistics:

Full-Text HTML Views: 885
Abstract HTML Views: 625
PDF Downloads: 247
ePub Downloads: 147
Total Views/Downloads: 1904
Geographical View

© 2018 Pimentel de Oliveira 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 the author at the Faculty of Dentistry, Federal University of Para, Augusto Corrêa Street, number 1. Guamá, Belém, Para, Brazil; Tel: +55 (91) 98097-2222; E-mail: betapimentel@hotmail.com


Endorsements



"Thank you for your magnificent and marvelous support throughout the publication stages. I would like to endorse my experience with you as a Junior Researcher and a recent graduate of the Dental school. Once again Thank you for your Great Help and Guidance throughout the stages of Publication. You guys are a great team and I am proud to be a Young Bentham author."


Asra Sabir Hussain
The University of Edinburgh Business School, UK

"My experience with Bentham Open was a valuable one because the quality of the services and analysis of my paper contributed in improving what we intended to convey to the readers."


José Ricardo Kina
Department of Surgery and Integrated Clinic,
Araçatuba School of Dentistry, São Paulo State University
Brazil

"The Publication Manager was very cooperative and replied my mails and guided me without any delays; however the reviewing process was too long."


Mahtab Memarpour
Prevention of Oral and Dental Disease Research Center,
Department of Pediatric Dentistry, School of Dentistry,
Shiraz University of Medical Sciences, Shiraz,
Iran


Browse Contents



Webmaster Contact: info@benthamopen.net
Copyright © 2019 Bentham Open