Radiopacity of restorative materials using digital images

Detalhes bibliográficos
Autor(a) principal: Salzedas, Leda Maria Pescinini
Data de Publicação: 2006
Outros Autores: Louzada, Mário Jefferson Quirino, Oliveira Filho, Antonio Braz de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of applied oral science (Online)
Texto Completo: https://www.revistas.usp.br/jaos/article/view/3359
Resumo: The radiopacity of esthetic restorative materials has been established as an important requirement, improving the radiographic diagnosis. The aim of this study was to evaluate the radiopacity of six restorative materials using a direct digital image system, comparing them to the dental tissues (enamel-dentin), expressed as equivalent thickness of aluminum (millimeters of aluminum). Five specimens of each material were made. Three 2-mm thick longitudinal sections were cut from an intact extracted permanent molar tooth (including enamel and dentin). An aluminum step wedge with 9 steps was used. The samples of different materials were placed on a phosphor plate together with a tooth section, aluminum step wedge and metal code letter, and were exposed using a dental x-ray unit. Five measurements of radiographic density were obtained from each image of each item assessed (restorative material, enamel, dentin, each step of the aluminum step wedge) and the mean of these values was calculated. Radiopacity values were subsequently calculated as equivalents of aluminum thickness. Analysis of variance (ANOVA) indicated significant differences in radiopacity values among the materials (P
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spelling Radiopacity of restorative materials using digital images Radiopacidade de materiais restauradores utilizando imagens digitais DensitometriaMateriais dentáriosRadiografia digitalDensitometryDental materialDigital radiography The radiopacity of esthetic restorative materials has been established as an important requirement, improving the radiographic diagnosis. The aim of this study was to evaluate the radiopacity of six restorative materials using a direct digital image system, comparing them to the dental tissues (enamel-dentin), expressed as equivalent thickness of aluminum (millimeters of aluminum). Five specimens of each material were made. Three 2-mm thick longitudinal sections were cut from an intact extracted permanent molar tooth (including enamel and dentin). An aluminum step wedge with 9 steps was used. The samples of different materials were placed on a phosphor plate together with a tooth section, aluminum step wedge and metal code letter, and were exposed using a dental x-ray unit. Five measurements of radiographic density were obtained from each image of each item assessed (restorative material, enamel, dentin, each step of the aluminum step wedge) and the mean of these values was calculated. Radiopacity values were subsequently calculated as equivalents of aluminum thickness. Analysis of variance (ANOVA) indicated significant differences in radiopacity values among the materials (P A radiopacidade dos materiais tem sido valorizada como importante requisito, incrementando o diagnóstico radiográfico. O objetivo deste estudo foi avaliar, no sistema digital Digora, as densidades radiográficas de 06 materiais restauradores comparando-os aos tecidos dentais (esmalte e dentina), expressos em milímetros de alumínio (mm Al). Foram confeccionadas 05 amostras de cada material e três cortes de um molar extraído hígido (incluindo esmalte e dentina), com 2 mm de espessura, e um penetrômetro de alumínio com 09 degraus. Sobre cada placa óptica foram colocados amostras dos diferentes materiais, um corte do dente humano, o penetrômetro e a identificação, e feita a exposição utilizando um aparelho de raios X. Foram obtidas 05 medidas de densidade radiográfica de cada item avaliado (material restaurador, esmalte, dentina e degraus do penetrômetro de alumínio) em cada radiografia, e calculadas as médias destas medidas. A partir destas médias de densidade, foram calculados os valores da radiopacidade destes itens em mm de Al, em cada radiografia. Análise de variância (ANOVA) indicou diferença significante entre os valores de radiopacidade dos materiais (pUniversidade de São Paulo. Faculdade de Odontologia de Bauru2006-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/335910.1590/S1678-77572006000200015Journal of Applied Oral Science; Vol. 14 No. 2 (2006); 147-152 Journal of Applied Oral Science; Vol. 14 Núm. 2 (2006); 147-152 Journal of Applied Oral Science; v. 14 n. 2 (2006); 147-152 1678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/3359/4049Copyright (c) 2006 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessSalzedas, Leda Maria PescininiLouzada, Mário Jefferson QuirinoOliveira Filho, Antonio Braz de2012-04-27T11:53:41Zoai:revistas.usp.br:article/3359Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2012-04-27T11:53:41Journal of applied oral science (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Radiopacity of restorative materials using digital images
Radiopacidade de materiais restauradores utilizando imagens digitais
title Radiopacity of restorative materials using digital images
spellingShingle Radiopacity of restorative materials using digital images
Salzedas, Leda Maria Pescinini
Densitometria
Materiais dentários
Radiografia digital
Densitometry
Dental material
Digital radiography
title_short Radiopacity of restorative materials using digital images
title_full Radiopacity of restorative materials using digital images
title_fullStr Radiopacity of restorative materials using digital images
title_full_unstemmed Radiopacity of restorative materials using digital images
title_sort Radiopacity of restorative materials using digital images
author Salzedas, Leda Maria Pescinini
author_facet Salzedas, Leda Maria Pescinini
Louzada, Mário Jefferson Quirino
Oliveira Filho, Antonio Braz de
author_role author
author2 Louzada, Mário Jefferson Quirino
Oliveira Filho, Antonio Braz de
author2_role author
author
dc.contributor.author.fl_str_mv Salzedas, Leda Maria Pescinini
Louzada, Mário Jefferson Quirino
Oliveira Filho, Antonio Braz de
dc.subject.por.fl_str_mv Densitometria
Materiais dentários
Radiografia digital
Densitometry
Dental material
Digital radiography
topic Densitometria
Materiais dentários
Radiografia digital
Densitometry
Dental material
Digital radiography
description The radiopacity of esthetic restorative materials has been established as an important requirement, improving the radiographic diagnosis. The aim of this study was to evaluate the radiopacity of six restorative materials using a direct digital image system, comparing them to the dental tissues (enamel-dentin), expressed as equivalent thickness of aluminum (millimeters of aluminum). Five specimens of each material were made. Three 2-mm thick longitudinal sections were cut from an intact extracted permanent molar tooth (including enamel and dentin). An aluminum step wedge with 9 steps was used. The samples of different materials were placed on a phosphor plate together with a tooth section, aluminum step wedge and metal code letter, and were exposed using a dental x-ray unit. Five measurements of radiographic density were obtained from each image of each item assessed (restorative material, enamel, dentin, each step of the aluminum step wedge) and the mean of these values was calculated. Radiopacity values were subsequently calculated as equivalents of aluminum thickness. Analysis of variance (ANOVA) indicated significant differences in radiopacity values among the materials (P
publishDate 2006
dc.date.none.fl_str_mv 2006-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/jaos/article/view/3359
10.1590/S1678-77572006000200015
url https://www.revistas.usp.br/jaos/article/view/3359
identifier_str_mv 10.1590/S1678-77572006000200015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/jaos/article/view/3359/4049
dc.rights.driver.fl_str_mv Copyright (c) 2006 Journal of Applied Oral Science
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2006 Journal of Applied Oral Science
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Odontologia de Bauru
publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Odontologia de Bauru
dc.source.none.fl_str_mv Journal of Applied Oral Science; Vol. 14 No. 2 (2006); 147-152
Journal of Applied Oral Science; Vol. 14 Núm. 2 (2006); 147-152
Journal of Applied Oral Science; v. 14 n. 2 (2006); 147-152
1678-7765
1678-7757
reponame:Journal of applied oral science (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Journal of applied oral science (Online)
collection Journal of applied oral science (Online)
repository.name.fl_str_mv Journal of applied oral science (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||jaos@usp.br
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