Efficacy and Safety of Bleaching Gels According to Application Protocol
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2341/19-253-L http://hdl.handle.net/11449/218652 |
Resumo: | Objectives: This study evaluated bleaching efficacy, enamel microhardness, and roughness of highly concentrated hydrogen peroxide (HP) gels (35%-40%) using different application protocols. Gel decomposition and pH alteration were also analyzed. Methods and Materials: Bovine enamel/dentin specimens were divided into groups according to the bleaching gel-Pola Office Plus (POP-SDI, 37.5% HP), Opalescence Boost (OPB-Ultradent, 40% HP), Whiteness HP (WHP-FGM, 35% HP)-and application protocol-single application (SA) and multiple application (MA) during the in-office session. Deionized water was used in control group (no bleaching). Thus, seven final groups were obtained (n=15/group). Color (CIE L*a*b*), surface microhardness (SMH), and roughness (Ra) were assessed before/after treatments. The pH of gels was measured, and HP concentration was determined with potassium permanganate titration method in different times. Data were submitted to analysis of variance and Tukey tests (5%). Results: All gels presented similar and clinically acceptable bleaching efficacy (Delta E>2.7) for both SA and MA, as well as no significant differences for SMH and Ra comparing the two protocols in the same gel. Peroxide decomposition significantly increased with time, but final gel concentrations were still high after 45 minutes (32.29% POP; 38.45% OPB; and 32.74% WHP). The pH decreased over time (initial - after 45 min) for WHP (6.83 +/- 0.07 - 5.81 +/- 0.06), but minimal alterations were observed for POP (8.09 +/- 0.09 - 7.88 +/- 0.07) and OPB (7.82 +/- 0.11 - 7.87 +/- 0.07). Conclusions: Peroxide decomposition was very low for all gels tested, and pH remained stable for POP and OPB gels. Bleaching protocol did not influence whitening efficacy and hazardous effects over enamel, thus potentially there was no clinical significance. Therefore, for the products tested, there is no evidence for recommending the gel change during the bleaching session. |
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Efficacy and Safety of Bleaching Gels According to Application ProtocolObjectives: This study evaluated bleaching efficacy, enamel microhardness, and roughness of highly concentrated hydrogen peroxide (HP) gels (35%-40%) using different application protocols. Gel decomposition and pH alteration were also analyzed. Methods and Materials: Bovine enamel/dentin specimens were divided into groups according to the bleaching gel-Pola Office Plus (POP-SDI, 37.5% HP), Opalescence Boost (OPB-Ultradent, 40% HP), Whiteness HP (WHP-FGM, 35% HP)-and application protocol-single application (SA) and multiple application (MA) during the in-office session. Deionized water was used in control group (no bleaching). Thus, seven final groups were obtained (n=15/group). Color (CIE L*a*b*), surface microhardness (SMH), and roughness (Ra) were assessed before/after treatments. The pH of gels was measured, and HP concentration was determined with potassium permanganate titration method in different times. Data were submitted to analysis of variance and Tukey tests (5%). Results: All gels presented similar and clinically acceptable bleaching efficacy (Delta E>2.7) for both SA and MA, as well as no significant differences for SMH and Ra comparing the two protocols in the same gel. Peroxide decomposition significantly increased with time, but final gel concentrations were still high after 45 minutes (32.29% POP; 38.45% OPB; and 32.74% WHP). The pH decreased over time (initial - after 45 min) for WHP (6.83 +/- 0.07 - 5.81 +/- 0.06), but minimal alterations were observed for POP (8.09 +/- 0.09 - 7.88 +/- 0.07) and OPB (7.82 +/- 0.11 - 7.87 +/- 0.07). Conclusions: Peroxide decomposition was very low for all gels tested, and pH remained stable for POP and OPB gels. Bleaching protocol did not influence whitening efficacy and hazardous effects over enamel, thus potentially there was no clinical significance. Therefore, for the products tested, there is no evidence for recommending the gel change during the bleaching session.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sao Paulo State Univ UNESP, Inst Sci & Technol, Dept Restorat, Sao Jose Dos Campos, SP, BrazilSao Paulo State Univ UNESP, Inst Sci & Technol, Dept Restorat Dent, Sao Jose Dos Campos, SP, BrazilUniv Taubate, Sch Dent, Dept Restorat Dent, Dept Dent,UNITAU, Taubate, SP, BrazilSao Paulo State Univ UNESP, Inst Sci & Technol, Dept Restorat Dent, Sao Paulo, SP, BrazilSao Paulo State Univ UNESP, Inst Sci & Technol, Dept Restorat, Sao Jose Dos Campos, SP, BrazilSao Paulo State Univ UNESP, Inst Sci & Technol, Dept Restorat Dent, Sao Jose Dos Campos, SP, BrazilSao Paulo State Univ UNESP, Inst Sci & Technol, Dept Restorat Dent, Sao Paulo, SP, BrazilCNPq: 310320/2017-8FAPESP: 2016/13044-4Operative Dentistry IncUniversidade Estadual Paulista (UNESP)Univ TaubateBorges, A. B. [UNESP]Abreu, F. S. de [UNESP]Mailart, M. C. [UNESP]Zanatta, R. F. [UNESP]Torres, C. R. G. [UNESP]2022-04-28T17:22:09Z2022-04-28T17:22:09Z2021-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleE105-E116http://dx.doi.org/10.2341/19-253-LOperative Dentistry. Indianapolis: Operative Dentistry Inc, v. 46, n. 2, p. E105-E116, 2021.0361-7734http://hdl.handle.net/11449/21865210.2341/19-253-LWOS:000692033000018Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengOperative Dentistryinfo:eu-repo/semantics/openAccess2022-04-28T17:22:09Zoai:repositorio.unesp.br:11449/218652Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:14:44.445530Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Efficacy and Safety of Bleaching Gels According to Application Protocol |
title |
Efficacy and Safety of Bleaching Gels According to Application Protocol |
spellingShingle |
Efficacy and Safety of Bleaching Gels According to Application Protocol Borges, A. B. [UNESP] |
title_short |
Efficacy and Safety of Bleaching Gels According to Application Protocol |
title_full |
Efficacy and Safety of Bleaching Gels According to Application Protocol |
title_fullStr |
Efficacy and Safety of Bleaching Gels According to Application Protocol |
title_full_unstemmed |
Efficacy and Safety of Bleaching Gels According to Application Protocol |
title_sort |
Efficacy and Safety of Bleaching Gels According to Application Protocol |
author |
Borges, A. B. [UNESP] |
author_facet |
Borges, A. B. [UNESP] Abreu, F. S. de [UNESP] Mailart, M. C. [UNESP] Zanatta, R. F. [UNESP] Torres, C. R. G. [UNESP] |
author_role |
author |
author2 |
Abreu, F. S. de [UNESP] Mailart, M. C. [UNESP] Zanatta, R. F. [UNESP] Torres, C. R. G. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Univ Taubate |
dc.contributor.author.fl_str_mv |
Borges, A. B. [UNESP] Abreu, F. S. de [UNESP] Mailart, M. C. [UNESP] Zanatta, R. F. [UNESP] Torres, C. R. G. [UNESP] |
description |
Objectives: This study evaluated bleaching efficacy, enamel microhardness, and roughness of highly concentrated hydrogen peroxide (HP) gels (35%-40%) using different application protocols. Gel decomposition and pH alteration were also analyzed. Methods and Materials: Bovine enamel/dentin specimens were divided into groups according to the bleaching gel-Pola Office Plus (POP-SDI, 37.5% HP), Opalescence Boost (OPB-Ultradent, 40% HP), Whiteness HP (WHP-FGM, 35% HP)-and application protocol-single application (SA) and multiple application (MA) during the in-office session. Deionized water was used in control group (no bleaching). Thus, seven final groups were obtained (n=15/group). Color (CIE L*a*b*), surface microhardness (SMH), and roughness (Ra) were assessed before/after treatments. The pH of gels was measured, and HP concentration was determined with potassium permanganate titration method in different times. Data were submitted to analysis of variance and Tukey tests (5%). Results: All gels presented similar and clinically acceptable bleaching efficacy (Delta E>2.7) for both SA and MA, as well as no significant differences for SMH and Ra comparing the two protocols in the same gel. Peroxide decomposition significantly increased with time, but final gel concentrations were still high after 45 minutes (32.29% POP; 38.45% OPB; and 32.74% WHP). The pH decreased over time (initial - after 45 min) for WHP (6.83 +/- 0.07 - 5.81 +/- 0.06), but minimal alterations were observed for POP (8.09 +/- 0.09 - 7.88 +/- 0.07) and OPB (7.82 +/- 0.11 - 7.87 +/- 0.07). Conclusions: Peroxide decomposition was very low for all gels tested, and pH remained stable for POP and OPB gels. Bleaching protocol did not influence whitening efficacy and hazardous effects over enamel, thus potentially there was no clinical significance. Therefore, for the products tested, there is no evidence for recommending the gel change during the bleaching session. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-03-01 2022-04-28T17:22:09Z 2022-04-28T17:22:09Z |
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 |
http://dx.doi.org/10.2341/19-253-L Operative Dentistry. Indianapolis: Operative Dentistry Inc, v. 46, n. 2, p. E105-E116, 2021. 0361-7734 http://hdl.handle.net/11449/218652 10.2341/19-253-L WOS:000692033000018 |
url |
http://dx.doi.org/10.2341/19-253-L http://hdl.handle.net/11449/218652 |
identifier_str_mv |
Operative Dentistry. Indianapolis: Operative Dentistry Inc, v. 46, n. 2, p. E105-E116, 2021. 0361-7734 10.2341/19-253-L WOS:000692033000018 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Operative Dentistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
E105-E116 |
dc.publisher.none.fl_str_mv |
Operative Dentistry Inc |
publisher.none.fl_str_mv |
Operative Dentistry Inc |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808129408237568000 |