Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.jaypeejournals.com/eJournals/Abstract.aspx?id=5496&AID=24&num=18 http://hdl.handle.net/11449/125892 |
Resumo: | Objective: This study aims to evaluate the degree of conversion (DC) and hydrolytic degradation through the Vickers hardness test (HV) of a nanofilled (Filtek™ Z-250, 3M) and a microhybrid (Filtek™Supreme-XT, 3M) composite resin. Materials and methods: Eight disk-shaped specimens (4 mm diameter × 2 mm thick, ISO 4049) of each material were prepared for each test. Composites were inserted into single increment in a metallic matrix and light-cured for 40 seconds. VH readings were performed for each specimen at predetermined intervals: immediately after polymerization (control), 1, 2, 3, 7, 14, 21, 30 and 180 days. After curing, initial hardness measurements were performed and the specimens were immersed in artificial saliva at 37°C. For DC (%), specimens were ground, pressed with KBr and analyzed by FT-IR spectrophotometer. Results: Student t-test showed that there was no difference between the resins for DC (p = 0.252). ANOVA analysis revealed that Z-250 VH means were all greater than S-XT, for both top and bottom surfaces, whatever the storage-period in artificial saliva (p < 0.001). After 180 days of storage, the hardness obtained for S-XT was similar with that at the baseline, for both top and bottom surfaces. While for Z-250 hardness was not significantly different from baseline only for top surface, but there was a significant decrease observed in hardness for bottom surface. Conclusion: The materials tested showed no evidence of hydrolytic degradation in a significant way, in a 6-month storagetime in artificial saliva. Nanofilled resin presents a monomer conversion comparable to the conventional microhybrid. |
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Repositório Institucional da UNESP |
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Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resinComposite resinsHardness testsArtificial salivaFourier transform infrared spectroscopyObjective: This study aims to evaluate the degree of conversion (DC) and hydrolytic degradation through the Vickers hardness test (HV) of a nanofilled (Filtek™ Z-250, 3M) and a microhybrid (Filtek™Supreme-XT, 3M) composite resin. Materials and methods: Eight disk-shaped specimens (4 mm diameter × 2 mm thick, ISO 4049) of each material were prepared for each test. Composites were inserted into single increment in a metallic matrix and light-cured for 40 seconds. VH readings were performed for each specimen at predetermined intervals: immediately after polymerization (control), 1, 2, 3, 7, 14, 21, 30 and 180 days. After curing, initial hardness measurements were performed and the specimens were immersed in artificial saliva at 37°C. For DC (%), specimens were ground, pressed with KBr and analyzed by FT-IR spectrophotometer. Results: Student t-test showed that there was no difference between the resins for DC (p = 0.252). ANOVA analysis revealed that Z-250 VH means were all greater than S-XT, for both top and bottom surfaces, whatever the storage-period in artificial saliva (p < 0.001). After 180 days of storage, the hardness obtained for S-XT was similar with that at the baseline, for both top and bottom surfaces. While for Z-250 hardness was not significantly different from baseline only for top surface, but there was a significant decrease observed in hardness for bottom surface. Conclusion: The materials tested showed no evidence of hydrolytic degradation in a significant way, in a 6-month storagetime in artificial saliva. Nanofilled resin presents a monomer conversion comparable to the conventional microhybrid.Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Odontologia Restauradora, Faculdade de Odontologia de Araraquara, Araraquara, Rua Humaitá 1680 3 andar sala 313, Centro, CEP 14801-903, SP, BrasilUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Odontologia Restauradora, Faculdade de Odontologia de Araraquara, Araraquara, Rua Humaitá 1680 3 andar sala 313, Centro, CEP 14801-903, SP, BrasilUniversidade Estadual Paulista (Unesp)Ferreira Jassé, FernandaBorges, Carlos Henrique BragaTonetto, Mateus RodriguesRastelli, Alessandra Nara de SouzaBagnato, Vanderlei SalvadorCampos, Edson AlvesSantos, Reidson Stanley SoaresBandeca, Matheus CoêlhoSaad, José Roberto Cury [UNESP]2015-08-06T16:13:23Z2015-08-06T16:13:23Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article876-882http://www.jaypeejournals.com/eJournals/Abstract.aspx?id=5496&AID=24&num=18The Journal of Contemporary Dental Practice, v. 14, n. 5, p. 876-882, 2013.1526-3711http://hdl.handle.net/11449/12589210.5005/jp-journals-10024-14191541792949750106691496952621339359045870555486544947860249518663Currículo Lattesreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengThe Journal of Contemporary Dental Practice0,263info:eu-repo/semantics/openAccess2021-10-23T21:56:24Zoai:repositorio.unesp.br:11449/125892Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:42:57.297612Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin |
title |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin |
spellingShingle |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin Ferreira Jassé, Fernanda Composite resins Hardness tests Artificial saliva Fourier transform infrared spectroscopy |
title_short |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin |
title_full |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin |
title_fullStr |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin |
title_full_unstemmed |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin |
title_sort |
Long-term surface hardness and monomer conversion of a nonofilled and a microhybrid composite resin |
author |
Ferreira Jassé, Fernanda |
author_facet |
Ferreira Jassé, Fernanda Borges, Carlos Henrique Braga Tonetto, Mateus Rodrigues Rastelli, Alessandra Nara de Souza Bagnato, Vanderlei Salvador Campos, Edson Alves Santos, Reidson Stanley Soares Bandeca, Matheus Coêlho Saad, José Roberto Cury [UNESP] |
author_role |
author |
author2 |
Borges, Carlos Henrique Braga Tonetto, Mateus Rodrigues Rastelli, Alessandra Nara de Souza Bagnato, Vanderlei Salvador Campos, Edson Alves Santos, Reidson Stanley Soares Bandeca, Matheus Coêlho Saad, José Roberto Cury [UNESP] |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Ferreira Jassé, Fernanda Borges, Carlos Henrique Braga Tonetto, Mateus Rodrigues Rastelli, Alessandra Nara de Souza Bagnato, Vanderlei Salvador Campos, Edson Alves Santos, Reidson Stanley Soares Bandeca, Matheus Coêlho Saad, José Roberto Cury [UNESP] |
dc.subject.por.fl_str_mv |
Composite resins Hardness tests Artificial saliva Fourier transform infrared spectroscopy |
topic |
Composite resins Hardness tests Artificial saliva Fourier transform infrared spectroscopy |
description |
Objective: This study aims to evaluate the degree of conversion (DC) and hydrolytic degradation through the Vickers hardness test (HV) of a nanofilled (Filtek™ Z-250, 3M) and a microhybrid (Filtek™Supreme-XT, 3M) composite resin. Materials and methods: Eight disk-shaped specimens (4 mm diameter × 2 mm thick, ISO 4049) of each material were prepared for each test. Composites were inserted into single increment in a metallic matrix and light-cured for 40 seconds. VH readings were performed for each specimen at predetermined intervals: immediately after polymerization (control), 1, 2, 3, 7, 14, 21, 30 and 180 days. After curing, initial hardness measurements were performed and the specimens were immersed in artificial saliva at 37°C. For DC (%), specimens were ground, pressed with KBr and analyzed by FT-IR spectrophotometer. Results: Student t-test showed that there was no difference between the resins for DC (p = 0.252). ANOVA analysis revealed that Z-250 VH means were all greater than S-XT, for both top and bottom surfaces, whatever the storage-period in artificial saliva (p < 0.001). After 180 days of storage, the hardness obtained for S-XT was similar with that at the baseline, for both top and bottom surfaces. While for Z-250 hardness was not significantly different from baseline only for top surface, but there was a significant decrease observed in hardness for bottom surface. Conclusion: The materials tested showed no evidence of hydrolytic degradation in a significant way, in a 6-month storagetime in artificial saliva. Nanofilled resin presents a monomer conversion comparable to the conventional microhybrid. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 2015-08-06T16:13:23Z 2015-08-06T16:13:23Z |
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.jaypeejournals.com/eJournals/Abstract.aspx?id=5496&AID=24&num=18 The Journal of Contemporary Dental Practice, v. 14, n. 5, p. 876-882, 2013. 1526-3711 http://hdl.handle.net/11449/125892 10.5005/jp-journals-10024-1419 1541792949750106 6914969526213393 5904587055548654 4947860249518663 |
url |
http://www.jaypeejournals.com/eJournals/Abstract.aspx?id=5496&AID=24&num=18 http://hdl.handle.net/11449/125892 |
identifier_str_mv |
The Journal of Contemporary Dental Practice, v. 14, n. 5, p. 876-882, 2013. 1526-3711 10.5005/jp-journals-10024-1419 1541792949750106 6914969526213393 5904587055548654 4947860249518663 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
The Journal of Contemporary Dental Practice 0,263 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
876-882 |
dc.source.none.fl_str_mv |
Currículo Lattes 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_ |
1808129453954433024 |