Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4103/0976-237X.188543 http://hdl.handle.net/11449/161951 |
Resumo: | Objectives: This study aimed to evaluate the influence of the incorporation of pigments on surface hardness of four acrylic resins subjected to thermocycling and analyze their elemental composition using energy dispersive X-ray spectroscopy (EDS). Materials and Methods: Twenty-one discs of each resin were fabricated, whereas seven had no additive, seven had 3% of nanoscale pigments and last seven had 10% of them. The percentage was obtained by measuring the total weight of each resin disc. Besides, seven discs composed by only nanoscale pigments were also fabricated, totalizing 91 discs. The pigment was weighed by using an analytical balance (BEL Analytical Equipment, SP, Brazil). The surface hardness was measured through a hardness tester machine before and after thermocycling (5-55 degrees C, for 2000 cycles). Data were analyzed by ANOVA and Tukey's test (P < 0.05). The chemical composition of the discs composed only by nanoscale pigments was analyzed with EDS test. Results: Hardness of all resins decreased after thermocycling. The lowest values were observed on the discs with 3% of nanoscale pigments and discs fabricated only with them. EDS showed the presence of titanium dioxide. Conclusion: Discs with 7% of pigments (after thermocycling) showed higher hardness values. |
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Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesisAcrylic resinsdenture basesgeriatricsObjectives: This study aimed to evaluate the influence of the incorporation of pigments on surface hardness of four acrylic resins subjected to thermocycling and analyze their elemental composition using energy dispersive X-ray spectroscopy (EDS). Materials and Methods: Twenty-one discs of each resin were fabricated, whereas seven had no additive, seven had 3% of nanoscale pigments and last seven had 10% of them. The percentage was obtained by measuring the total weight of each resin disc. Besides, seven discs composed by only nanoscale pigments were also fabricated, totalizing 91 discs. The pigment was weighed by using an analytical balance (BEL Analytical Equipment, SP, Brazil). The surface hardness was measured through a hardness tester machine before and after thermocycling (5-55 degrees C, for 2000 cycles). Data were analyzed by ANOVA and Tukey's test (P < 0.05). The chemical composition of the discs composed only by nanoscale pigments was analyzed with EDS test. Results: Hardness of all resins decreased after thermocycling. The lowest values were observed on the discs with 3% of nanoscale pigments and discs fabricated only with them. EDS showed the presence of titanium dioxide. Conclusion: Discs with 7% of pigments (after thermocycling) showed higher hardness values.Foundation for Support to Research of the State of Sao Paulo - BrazilSao Paulo State Univ, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, Aracatuba, SP, BrazilUniv Fed Minas Gerais, Dept Oral Surg Pathol & Dent Clin, Belo Horizonte, MG, BrazilSao Paulo State Univ, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, Aracatuba, SP, BrazilFoundation for Support to Research of the State of Sao Paulo - Brazil: 2009/15170-3Medknow Publications & Media Pvt LtdUniversidade Estadual Paulista (Unesp)Universidade Federal de Minas Gerais (UFMG)Goiato, Marcelo Coelho [UNESP]Rossatti Zuccolotti, Bruna Carolina [UNESP]Moreno, AmaliaVechiato Filho, Aljomar Jose [UNESP]Paulini, Marcela Borghi [UNESP]Dos Santos, Daniela Micheline [UNESP]2018-11-26T17:06:17Z2018-11-26T17:06:17Z2016-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article307-311application/pdfhttp://dx.doi.org/10.4103/0976-237X.188543Contemporary Clinical Dentistry. Mumbai: Medknow Publications & Media Pvt Ltd, v. 7, n. 3, p. 307-311, 2016.0976-237Xhttp://hdl.handle.net/11449/16195110.4103/0976-237X.188543WOS:000383794800010WOS000383794800010.pdf9719883814872582Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengContemporary Clinical Dentistryinfo:eu-repo/semantics/openAccess2023-11-30T06:15:45Zoai:repositorio.unesp.br:11449/161951Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-30T06:15:45Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
title |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
spellingShingle |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis Goiato, Marcelo Coelho [UNESP] Acrylic resins denture bases geriatrics |
title_short |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
title_full |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
title_fullStr |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
title_full_unstemmed |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
title_sort |
Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
author |
Goiato, Marcelo Coelho [UNESP] |
author_facet |
Goiato, Marcelo Coelho [UNESP] Rossatti Zuccolotti, Bruna Carolina [UNESP] Moreno, Amalia Vechiato Filho, Aljomar Jose [UNESP] Paulini, Marcela Borghi [UNESP] Dos Santos, Daniela Micheline [UNESP] |
author_role |
author |
author2 |
Rossatti Zuccolotti, Bruna Carolina [UNESP] Moreno, Amalia Vechiato Filho, Aljomar Jose [UNESP] Paulini, Marcela Borghi [UNESP] Dos Santos, Daniela Micheline [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Minas Gerais (UFMG) |
dc.contributor.author.fl_str_mv |
Goiato, Marcelo Coelho [UNESP] Rossatti Zuccolotti, Bruna Carolina [UNESP] Moreno, Amalia Vechiato Filho, Aljomar Jose [UNESP] Paulini, Marcela Borghi [UNESP] Dos Santos, Daniela Micheline [UNESP] |
dc.subject.por.fl_str_mv |
Acrylic resins denture bases geriatrics |
topic |
Acrylic resins denture bases geriatrics |
description |
Objectives: This study aimed to evaluate the influence of the incorporation of pigments on surface hardness of four acrylic resins subjected to thermocycling and analyze their elemental composition using energy dispersive X-ray spectroscopy (EDS). Materials and Methods: Twenty-one discs of each resin were fabricated, whereas seven had no additive, seven had 3% of nanoscale pigments and last seven had 10% of them. The percentage was obtained by measuring the total weight of each resin disc. Besides, seven discs composed by only nanoscale pigments were also fabricated, totalizing 91 discs. The pigment was weighed by using an analytical balance (BEL Analytical Equipment, SP, Brazil). The surface hardness was measured through a hardness tester machine before and after thermocycling (5-55 degrees C, for 2000 cycles). Data were analyzed by ANOVA and Tukey's test (P < 0.05). The chemical composition of the discs composed only by nanoscale pigments was analyzed with EDS test. Results: Hardness of all resins decreased after thermocycling. The lowest values were observed on the discs with 3% of nanoscale pigments and discs fabricated only with them. EDS showed the presence of titanium dioxide. Conclusion: Discs with 7% of pigments (after thermocycling) showed higher hardness values. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07-01 2018-11-26T17:06:17Z 2018-11-26T17:06:17Z |
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/10.4103/0976-237X.188543 Contemporary Clinical Dentistry. Mumbai: Medknow Publications & Media Pvt Ltd, v. 7, n. 3, p. 307-311, 2016. 0976-237X http://hdl.handle.net/11449/161951 10.4103/0976-237X.188543 WOS:000383794800010 WOS000383794800010.pdf 9719883814872582 |
url |
http://dx.doi.org/10.4103/0976-237X.188543 http://hdl.handle.net/11449/161951 |
identifier_str_mv |
Contemporary Clinical Dentistry. Mumbai: Medknow Publications & Media Pvt Ltd, v. 7, n. 3, p. 307-311, 2016. 0976-237X 10.4103/0976-237X.188543 WOS:000383794800010 WOS000383794800010.pdf 9719883814872582 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Contemporary Clinical Dentistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
307-311 application/pdf |
dc.publisher.none.fl_str_mv |
Medknow Publications & Media Pvt Ltd |
publisher.none.fl_str_mv |
Medknow Publications & Media Pvt Ltd |
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_ |
1799965120089030656 |