Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/198718 |
Resumo: | PURPOSE: This crossover study evaluated the hydrogen (HP) and carbamide (CP) peroxide degradation of bleaching gels in prefilled (PT) and customized trays (CT). METHODS: Volunteers were randomly allocated to treatments (n=10) : PT-HP/OGO (Opalescence GO-10%); CT-HP/WTC (White Class-10%) or CT-CP/OPF (Opalescence PF-10%). Gel samples were collected from the upper and lower trays in each period (baseline, 15, 30, 50 and 120 minutes). HP concentration was determined with the potassium permanganate titration method. Degradation was calculated based on initial concentration of gels. Repeated measures two-way ANOVA and Tukey's test (5%) were applied. RESULTS: Bleaching gels exhibited exponential degradation over time. In 30 minutes, no significant differences in degradation among them were detected (P= 0.13). After 2 hours, lower degradation of CT-CP/OPF (61.85±10.65), compared with hydrogen peroxide in PT and CT (71.55±8.24 and 78.69±9.33, respectively) was observed. The gels showed higher degradation rate in lower trays than in upper trays in all evaluated times. In general, the bleaching gels in lower trays degraded more than in upper trays. The carbamide peroxide gel presented lower degradation than hydrogen peroxide after 2 hours. The degradation of the 10% hydrogen peroxide gel used in prefilled trays was higher than the one in customized trays after 30 minutes, but after 120 minutes, the degradation rate was similar for both. CLINICAL SIGNIFICANCE: Bleaching gels degraded faster in lower arches than in upper arches. The degradation process was faster in the first 15 minutes of use and depended on the gel's composition, time of use, and tray position in the dental arches. |
id |
UNSP_556bce6e0f9b22cde43e30035b20cafd |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/198718 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trialPURPOSE: This crossover study evaluated the hydrogen (HP) and carbamide (CP) peroxide degradation of bleaching gels in prefilled (PT) and customized trays (CT). METHODS: Volunteers were randomly allocated to treatments (n=10) : PT-HP/OGO (Opalescence GO-10%); CT-HP/WTC (White Class-10%) or CT-CP/OPF (Opalescence PF-10%). Gel samples were collected from the upper and lower trays in each period (baseline, 15, 30, 50 and 120 minutes). HP concentration was determined with the potassium permanganate titration method. Degradation was calculated based on initial concentration of gels. Repeated measures two-way ANOVA and Tukey's test (5%) were applied. RESULTS: Bleaching gels exhibited exponential degradation over time. In 30 minutes, no significant differences in degradation among them were detected (P= 0.13). After 2 hours, lower degradation of CT-CP/OPF (61.85±10.65), compared with hydrogen peroxide in PT and CT (71.55±8.24 and 78.69±9.33, respectively) was observed. The gels showed higher degradation rate in lower trays than in upper trays in all evaluated times. In general, the bleaching gels in lower trays degraded more than in upper trays. The carbamide peroxide gel presented lower degradation than hydrogen peroxide after 2 hours. The degradation of the 10% hydrogen peroxide gel used in prefilled trays was higher than the one in customized trays after 30 minutes, but after 120 minutes, the degradation rate was similar for both. CLINICAL SIGNIFICANCE: Bleaching gels degraded faster in lower arches than in upper arches. The degradation process was faster in the first 15 minutes of use and depended on the gel's composition, time of use, and tray position in the dental arches.Institute of Science and Technology Department of Restorative Dentistry UNESPInstitute of Science and Technology Department of Restorative Dentistry UNESPUniversidade Estadual Paulista (Unesp)Mailart, Mariane C. [UNESP]Ferracioli, Carolina deS [UNESP]Torres, Carlos Rg [UNESP]Palo, Renato M. [UNESP]Borges, Alessandra B. [UNESP]2020-12-12T01:20:14Z2020-12-12T01:20:14Z2020-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article89-94American journal of dentistry, v. 33, n. 2, p. 89-94, 2020.0894-8275http://hdl.handle.net/11449/1987182-s2.0-85083023280Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAmerican journal of dentistryinfo:eu-repo/semantics/openAccess2021-10-22T19:57:49Zoai:repositorio.unesp.br:11449/198718Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:52:46.290065Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial |
title |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial |
spellingShingle |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial Mailart, Mariane C. [UNESP] |
title_short |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial |
title_full |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial |
title_fullStr |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial |
title_full_unstemmed |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial |
title_sort |
Hydrogen peroxide degradation of bleaching systems with different trays: Randomized clinical trial |
author |
Mailart, Mariane C. [UNESP] |
author_facet |
Mailart, Mariane C. [UNESP] Ferracioli, Carolina deS [UNESP] Torres, Carlos Rg [UNESP] Palo, Renato M. [UNESP] Borges, Alessandra B. [UNESP] |
author_role |
author |
author2 |
Ferracioli, Carolina deS [UNESP] Torres, Carlos Rg [UNESP] Palo, Renato M. [UNESP] Borges, Alessandra B. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Mailart, Mariane C. [UNESP] Ferracioli, Carolina deS [UNESP] Torres, Carlos Rg [UNESP] Palo, Renato M. [UNESP] Borges, Alessandra B. [UNESP] |
description |
PURPOSE: This crossover study evaluated the hydrogen (HP) and carbamide (CP) peroxide degradation of bleaching gels in prefilled (PT) and customized trays (CT). METHODS: Volunteers were randomly allocated to treatments (n=10) : PT-HP/OGO (Opalescence GO-10%); CT-HP/WTC (White Class-10%) or CT-CP/OPF (Opalescence PF-10%). Gel samples were collected from the upper and lower trays in each period (baseline, 15, 30, 50 and 120 minutes). HP concentration was determined with the potassium permanganate titration method. Degradation was calculated based on initial concentration of gels. Repeated measures two-way ANOVA and Tukey's test (5%) were applied. RESULTS: Bleaching gels exhibited exponential degradation over time. In 30 minutes, no significant differences in degradation among them were detected (P= 0.13). After 2 hours, lower degradation of CT-CP/OPF (61.85±10.65), compared with hydrogen peroxide in PT and CT (71.55±8.24 and 78.69±9.33, respectively) was observed. The gels showed higher degradation rate in lower trays than in upper trays in all evaluated times. In general, the bleaching gels in lower trays degraded more than in upper trays. The carbamide peroxide gel presented lower degradation than hydrogen peroxide after 2 hours. The degradation of the 10% hydrogen peroxide gel used in prefilled trays was higher than the one in customized trays after 30 minutes, but after 120 minutes, the degradation rate was similar for both. CLINICAL SIGNIFICANCE: Bleaching gels degraded faster in lower arches than in upper arches. The degradation process was faster in the first 15 minutes of use and depended on the gel's composition, time of use, and tray position in the dental arches. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:20:14Z 2020-12-12T01:20:14Z 2020-04-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
American journal of dentistry, v. 33, n. 2, p. 89-94, 2020. 0894-8275 http://hdl.handle.net/11449/198718 2-s2.0-85083023280 |
identifier_str_mv |
American journal of dentistry, v. 33, n. 2, p. 89-94, 2020. 0894-8275 2-s2.0-85083023280 |
url |
http://hdl.handle.net/11449/198718 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
American journal of dentistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
89-94 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128714427334656 |