Reproducibility of microhandeness measurements in different surfices
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | https://www.ufpe.br/ijd/index.php/exemplo/article/view/395 http://hdl.handle.net/11449/125837 |
Resumo: | The aim of this study was to assess inter and intra-examiner reproducibility of Knoop hardness (KH) of two materials: composite resin (CR – FiltekTM Supreme XT- 3M ESPE) and bovine dental enamel (BDE). Five specimens were made for each material. The CR composite resin was inserted into a cylindrical metal matrix (4 x 2mm, ISO 4049) and photo-activated for 40s on the upper side (top) with a LED Celalux® (Voco, Germany). BDE specimens were taken from the buccal side of the teeth in blocks of 3x3x3mm that were embedded into acrylic discs, flattened with sandpapers and polished. Three KH readings were performed for each specimen using load of 25 gf applied for 5 seconds, at predetermined intervals: immediately and after 4 and 7 days of preparation. Each indentation was measured using a microhardness tester by three independent observers in each period of analysis. KH values were recorded separately by their respective observers. KH values were recorded separately by their respective observers. Data were statistically analyzed by ANOVA and Tukey’s test (α=0.05). To test for a possible correlation between measurements of each examiner, a linear regression analysis was performed. There was no statistical difference (P> 0.05) in intra and inter-examiner ratings, regardless of the period of analysis. A strong positive linear correlation (BDE- r(mean)=0.87; CR- r(mean)=0.90) was observed between KH measurements of the different examiners. The KH test showed high reproducibility among multiple examiners, regardless of periods or the materials used |
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Reproducibility of microhandeness measurements in different surficesReprodutibilidade de mensurações de microdureza em diferentes superfíciesReproducibility of resultsHardness testsDentistryReprodutibilidade dos testesTestes de durezaOdontologiaThe aim of this study was to assess inter and intra-examiner reproducibility of Knoop hardness (KH) of two materials: composite resin (CR – FiltekTM Supreme XT- 3M ESPE) and bovine dental enamel (BDE). Five specimens were made for each material. The CR composite resin was inserted into a cylindrical metal matrix (4 x 2mm, ISO 4049) and photo-activated for 40s on the upper side (top) with a LED Celalux® (Voco, Germany). BDE specimens were taken from the buccal side of the teeth in blocks of 3x3x3mm that were embedded into acrylic discs, flattened with sandpapers and polished. Three KH readings were performed for each specimen using load of 25 gf applied for 5 seconds, at predetermined intervals: immediately and after 4 and 7 days of preparation. Each indentation was measured using a microhardness tester by three independent observers in each period of analysis. KH values were recorded separately by their respective observers. KH values were recorded separately by their respective observers. Data were statistically analyzed by ANOVA and Tukey’s test (α=0.05). To test for a possible correlation between measurements of each examiner, a linear regression analysis was performed. There was no statistical difference (P> 0.05) in intra and inter-examiner ratings, regardless of the period of analysis. A strong positive linear correlation (BDE- r(mean)=0.87; CR- r(mean)=0.90) was observed between KH measurements of the different examiners. The KH test showed high reproducibility among multiple examiners, regardless of periods or the materials usedO objetivo deste trabalho foi estimar a reprodutibilidade intra e interexaminadores das mensurações de dureza knoop (DK) de dois materiais: resina composta (RC- FiltekTM Supreme XT- 3M ESPE) e esmalte dental bovino (EDB). Cinco corpos-de-prova foram confeccionados para cada material. A RC foi inserida em matriz metálica circular (4 x 2 mm, ISO 4049) e fotoativada por 40 s na face superior com LED Celalux® (Voco, Alemanha). Para a confecção dos corpos-de-prova de EDB, blocos (3 x 3 x 3 mm) obtidos a partir da face vestibular de dentes bovinos foram incluídos em discos de acrílico, desgastados com lixa e polidos. Três leituras de DK foram realizadas com carga de 25 g durante 5 s para cada corpo-de-prova, em três tempos: imediatamente e após 4 e 7 dias da confecção. Cada indentação foi mensurada, em microdurômetro, por 3 observadores independentes, em cada período da análise. Os valores de DK foram registrados isoladamente por seus respectivos observadores. Os dados foram submetidos à ANOVA e Tukey (α=0,05). Para avaliar o coeficiente de correlação (r) entre as observações de cada examinador, uma regressão linear foi realizada. Não houve diferença estatística (P>0,05) nas avaliações intra ou inter examinador, independentemente do período de análise. Observou-se forte correlação (EDB- r(médio)=0,87; RC- r(médio)=0,90) entre as mensurações de DK dos diferentes examinadores. O teste de DK apresentou elevada reprodutibilidade entre os múltiplos examinadores, independentemente dos períodos ou dos materiais utilizados.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)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)Roberto, Andiara Ribeiro [UNESP]Borges, Carlos Henrique Braga [UNESP]Jassé, Fernanda Ferreira [UNESP]Boaventura, Juliana Maria Capelozza [UNESP]Rastelli, Alessandra Nara de Souza [UNESP]Reis, José Maurício Santos Nunes [UNESP]Saad, José Roberto Cury [UNESP]2015-08-06T16:13:15Z2015-08-06T16:13:15Z2012info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article7-11application/pdfhttps://www.ufpe.br/ijd/index.php/exemplo/article/view/395IJD. International Journal of Dentistry, v. 11, n. 1, p. 7-11, 2012.1806-146Xhttp://hdl.handle.net/11449/125837ISSN1806-146X-2012-11-01-07-11.pdf312335383726183215417929497501066914969526213393Currículo Lattesreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporIJD. International Journal of Dentistryinfo:eu-repo/semantics/openAccess2024-01-26T06:33:29Zoai:repositorio.unesp.br:11449/125837Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-26T06:33:29Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Reproducibility of microhandeness measurements in different surfices Reprodutibilidade de mensurações de microdureza em diferentes superfícies |
title |
Reproducibility of microhandeness measurements in different surfices |
spellingShingle |
Reproducibility of microhandeness measurements in different surfices Roberto, Andiara Ribeiro [UNESP] Reproducibility of results Hardness tests Dentistry Reprodutibilidade dos testes Testes de dureza Odontologia |
title_short |
Reproducibility of microhandeness measurements in different surfices |
title_full |
Reproducibility of microhandeness measurements in different surfices |
title_fullStr |
Reproducibility of microhandeness measurements in different surfices |
title_full_unstemmed |
Reproducibility of microhandeness measurements in different surfices |
title_sort |
Reproducibility of microhandeness measurements in different surfices |
author |
Roberto, Andiara Ribeiro [UNESP] |
author_facet |
Roberto, Andiara Ribeiro [UNESP] Borges, Carlos Henrique Braga [UNESP] Jassé, Fernanda Ferreira [UNESP] Boaventura, Juliana Maria Capelozza [UNESP] Rastelli, Alessandra Nara de Souza [UNESP] Reis, José Maurício Santos Nunes [UNESP] Saad, José Roberto Cury [UNESP] |
author_role |
author |
author2 |
Borges, Carlos Henrique Braga [UNESP] Jassé, Fernanda Ferreira [UNESP] Boaventura, Juliana Maria Capelozza [UNESP] Rastelli, Alessandra Nara de Souza [UNESP] Reis, José Maurício Santos Nunes [UNESP] Saad, José Roberto Cury [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Roberto, Andiara Ribeiro [UNESP] Borges, Carlos Henrique Braga [UNESP] Jassé, Fernanda Ferreira [UNESP] Boaventura, Juliana Maria Capelozza [UNESP] Rastelli, Alessandra Nara de Souza [UNESP] Reis, José Maurício Santos Nunes [UNESP] Saad, José Roberto Cury [UNESP] |
dc.subject.por.fl_str_mv |
Reproducibility of results Hardness tests Dentistry Reprodutibilidade dos testes Testes de dureza Odontologia |
topic |
Reproducibility of results Hardness tests Dentistry Reprodutibilidade dos testes Testes de dureza Odontologia |
description |
The aim of this study was to assess inter and intra-examiner reproducibility of Knoop hardness (KH) of two materials: composite resin (CR – FiltekTM Supreme XT- 3M ESPE) and bovine dental enamel (BDE). Five specimens were made for each material. The CR composite resin was inserted into a cylindrical metal matrix (4 x 2mm, ISO 4049) and photo-activated for 40s on the upper side (top) with a LED Celalux® (Voco, Germany). BDE specimens were taken from the buccal side of the teeth in blocks of 3x3x3mm that were embedded into acrylic discs, flattened with sandpapers and polished. Three KH readings were performed for each specimen using load of 25 gf applied for 5 seconds, at predetermined intervals: immediately and after 4 and 7 days of preparation. Each indentation was measured using a microhardness tester by three independent observers in each period of analysis. KH values were recorded separately by their respective observers. KH values were recorded separately by their respective observers. Data were statistically analyzed by ANOVA and Tukey’s test (α=0.05). To test for a possible correlation between measurements of each examiner, a linear regression analysis was performed. There was no statistical difference (P> 0.05) in intra and inter-examiner ratings, regardless of the period of analysis. A strong positive linear correlation (BDE- r(mean)=0.87; CR- r(mean)=0.90) was observed between KH measurements of the different examiners. The KH test showed high reproducibility among multiple examiners, regardless of periods or the materials used |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 2015-08-06T16:13:15Z 2015-08-06T16:13:15Z |
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 |
https://www.ufpe.br/ijd/index.php/exemplo/article/view/395 IJD. International Journal of Dentistry, v. 11, n. 1, p. 7-11, 2012. 1806-146X http://hdl.handle.net/11449/125837 ISSN1806-146X-2012-11-01-07-11.pdf 3123353837261832 1541792949750106 6914969526213393 |
url |
https://www.ufpe.br/ijd/index.php/exemplo/article/view/395 http://hdl.handle.net/11449/125837 |
identifier_str_mv |
IJD. International Journal of Dentistry, v. 11, n. 1, p. 7-11, 2012. 1806-146X ISSN1806-146X-2012-11-01-07-11.pdf 3123353837261832 1541792949750106 6914969526213393 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
IJD. International 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 |
7-11 application/pdf |
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 |
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1803650360719441920 |