The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics.
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.actaodontologicalat.com/archivo/v23n2/fulltext/articulo1.pdf http://hdl.handle.net/11449/72145 |
Resumo: | This study examined the effect of 10% and 16% carbamide peroxide bleaching agents on the surface microhardness of micro-particulate feldspathic ceramics (VM7 and VM13, Vita Zahnfabrik). Forty specimens (8-mm diameter, 2-mm thickness) were divided into four groups (n=10): GI-VM7 + 10% Whiteness, G2-VM7 + 16% Whiteness, G3-VM13 + 10% and G4-VM13 + 16% Whiteness. The home-use bleaching agents were applied for 8 hours on 15 days, and the specimens were stored in distilled water at 37 degrees C. The Vickers hardness number (HV) was determined for each specimen. Data were analyzed by the Wilcoxon and Mann-Whitney tests (p < 0.05). The microhardness values before exposure were: g1-433 (57); g2-486 (22); g3-509 (28); g4-518 (24), and after exposure: G1-349 (32); G2-496 (95); G3-519 (38); G4-502 (81). G2 exhibited a higher and significant difference than GI in VM7 groups, and the effect of bleaching concentration was shown to be significant by the Mann-Whitney test. And for VM13, both the Wilcoxon and Mann-Whitney tests showed no significant differences. When using 10% carbamide peroxide, the microhardness of VM7 ceramic was affected, and there were no effect on the microhardness between VM7 and VM13 ceramics when 16% carbamide peroxide was used. |
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Repositório Institucional da UNESP |
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The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics.biomedical and dental materialsdrug derivativeperoxidetooth bleaching agentureaurea peroxideceramicsdrug effecthardnessCeramicsDental MaterialsHardnessHardness TestsPeroxidesTooth Bleaching AgentsUreaThis study examined the effect of 10% and 16% carbamide peroxide bleaching agents on the surface microhardness of micro-particulate feldspathic ceramics (VM7 and VM13, Vita Zahnfabrik). Forty specimens (8-mm diameter, 2-mm thickness) were divided into four groups (n=10): GI-VM7 + 10% Whiteness, G2-VM7 + 16% Whiteness, G3-VM13 + 10% and G4-VM13 + 16% Whiteness. The home-use bleaching agents were applied for 8 hours on 15 days, and the specimens were stored in distilled water at 37 degrees C. The Vickers hardness number (HV) was determined for each specimen. Data were analyzed by the Wilcoxon and Mann-Whitney tests (p < 0.05). The microhardness values before exposure were: g1-433 (57); g2-486 (22); g3-509 (28); g4-518 (24), and after exposure: G1-349 (32); G2-496 (95); G3-519 (38); G4-502 (81). G2 exhibited a higher and significant difference than GI in VM7 groups, and the effect of bleaching concentration was shown to be significant by the Mann-Whitney test. And for VM13, both the Wilcoxon and Mann-Whitney tests showed no significant differences. When using 10% carbamide peroxide, the microhardness of VM7 ceramic was affected, and there were no effect on the microhardness between VM7 and VM13 ceramics when 16% carbamide peroxide was used.Universidade Estadual Paulista (Unesp)Passos, Sheila PVanderlei, Aleska DSalazar-Marocho, Susana MAzevedo, Sarina M BVasquez, Vanessa Z CKimpara, Estevão Tomomitsu [UNESP]2014-05-27T11:25:23Z2014-05-27T11:25:23Z2010-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article79-83http://www.actaodontologicalat.com/archivo/v23n2/fulltext/articulo1.pdfActa odontológica latinoamericana : AOL, v. 23, n. 2, p. 79-83, 2010.0326-4815http://hdl.handle.net/11449/721452-s2.0-7995211289109679163886657540000-0003-0586-4644Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Odontológica Latinoamericana (AOL)0,264info:eu-repo/semantics/openAccess2021-10-23T12:14:39Zoai:repositorio.unesp.br:11449/72145Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T12:14:39Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. |
title |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. |
spellingShingle |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. Passos, Sheila P biomedical and dental materials drug derivative peroxide tooth bleaching agent urea urea peroxide ceramics drug effect hardness Ceramics Dental Materials Hardness Hardness Tests Peroxides Tooth Bleaching Agents Urea |
title_short |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. |
title_full |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. |
title_fullStr |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. |
title_full_unstemmed |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. |
title_sort |
The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics. |
author |
Passos, Sheila P |
author_facet |
Passos, Sheila P Vanderlei, Aleska D Salazar-Marocho, Susana M Azevedo, Sarina M B Vasquez, Vanessa Z C Kimpara, Estevão Tomomitsu [UNESP] |
author_role |
author |
author2 |
Vanderlei, Aleska D Salazar-Marocho, Susana M Azevedo, Sarina M B Vasquez, Vanessa Z C Kimpara, Estevão Tomomitsu [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Passos, Sheila P Vanderlei, Aleska D Salazar-Marocho, Susana M Azevedo, Sarina M B Vasquez, Vanessa Z C Kimpara, Estevão Tomomitsu [UNESP] |
dc.subject.por.fl_str_mv |
biomedical and dental materials drug derivative peroxide tooth bleaching agent urea urea peroxide ceramics drug effect hardness Ceramics Dental Materials Hardness Hardness Tests Peroxides Tooth Bleaching Agents Urea |
topic |
biomedical and dental materials drug derivative peroxide tooth bleaching agent urea urea peroxide ceramics drug effect hardness Ceramics Dental Materials Hardness Hardness Tests Peroxides Tooth Bleaching Agents Urea |
description |
This study examined the effect of 10% and 16% carbamide peroxide bleaching agents on the surface microhardness of micro-particulate feldspathic ceramics (VM7 and VM13, Vita Zahnfabrik). Forty specimens (8-mm diameter, 2-mm thickness) were divided into four groups (n=10): GI-VM7 + 10% Whiteness, G2-VM7 + 16% Whiteness, G3-VM13 + 10% and G4-VM13 + 16% Whiteness. The home-use bleaching agents were applied for 8 hours on 15 days, and the specimens were stored in distilled water at 37 degrees C. The Vickers hardness number (HV) was determined for each specimen. Data were analyzed by the Wilcoxon and Mann-Whitney tests (p < 0.05). The microhardness values before exposure were: g1-433 (57); g2-486 (22); g3-509 (28); g4-518 (24), and after exposure: G1-349 (32); G2-496 (95); G3-519 (38); G4-502 (81). G2 exhibited a higher and significant difference than GI in VM7 groups, and the effect of bleaching concentration was shown to be significant by the Mann-Whitney test. And for VM13, both the Wilcoxon and Mann-Whitney tests showed no significant differences. When using 10% carbamide peroxide, the microhardness of VM7 ceramic was affected, and there were no effect on the microhardness between VM7 and VM13 ceramics when 16% carbamide peroxide was used. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-12-01 2014-05-27T11:25:23Z 2014-05-27T11:25:23Z |
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://www.actaodontologicalat.com/archivo/v23n2/fulltext/articulo1.pdf Acta odontológica latinoamericana : AOL, v. 23, n. 2, p. 79-83, 2010. 0326-4815 http://hdl.handle.net/11449/72145 2-s2.0-79952112891 0967916388665754 0000-0003-0586-4644 |
url |
http://www.actaodontologicalat.com/archivo/v23n2/fulltext/articulo1.pdf http://hdl.handle.net/11449/72145 |
identifier_str_mv |
Acta odontológica latinoamericana : AOL, v. 23, n. 2, p. 79-83, 2010. 0326-4815 2-s2.0-79952112891 0967916388665754 0000-0003-0586-4644 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Odontológica Latinoamericana (AOL) 0,264 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
79-83 |
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_ |
1799965545747972096 |