In vitro study on radiographic gray levels of biomaterials using two digital image methods

Detalhes bibliográficos
Autor(a) principal: Nobrega, Newton Fernando Sobreira [UNIFESP]
Data de Publicação: 2012
Outros Autores: Puchnick, Andrea [UNIFESP], Cerqueira, Leandro Kfouri Martins [UNIFESP], Costa, Claudio, Ajzen, Sergio Aron [UNIFESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNIFESP
Texto Completo: http://dx.doi.org/10.1590/S1980-65232012000300008
http://repositorio.unifesp.br/handle/11600/6883
Resumo: PURPOSE: To compare the direct and indirect radiographic methods for assessing the gray levels of biomaterials employing the Digora for Windows and the Adobe Photoshop CS2 systems. METHODS: Specimens of biomaterials were made following manusfacturer's instructions and placed on phosphor storage plates (PSP) and on radiographic film for subsequent gray level assessment using the direct and indirect radiographic method, respectively. The radiographic density of each biomaterial was analyzed using Adobe Photoshop CS2 and Digora for Windows software. RESULTS: The distribution of gray levels found using the direct and indirect methods suggests that higher exposure times are correlated to lower reproducibility rates between groups. CONCLUSION: The indirect method is a feasible alternative to the direct method in assessing the radiographic gray levels of biomaterials, insofar as significant reproducibility was observed between groups for the exposure times of 0.2 to 0.5 seconds.
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spelling In vitro study on radiographic gray levels of biomaterials using two digital image methodsEstudo in vitro dos níveis radiográficos de cinza de biomateriais utilizando duas modalidades de imagem digitalDigital dental radiographyradiographic densitysoftware validationRadiografia dentária digitaldensidade radiográficavalidação de softwarePURPOSE: To compare the direct and indirect radiographic methods for assessing the gray levels of biomaterials employing the Digora for Windows and the Adobe Photoshop CS2 systems. METHODS: Specimens of biomaterials were made following manusfacturer's instructions and placed on phosphor storage plates (PSP) and on radiographic film for subsequent gray level assessment using the direct and indirect radiographic method, respectively. The radiographic density of each biomaterial was analyzed using Adobe Photoshop CS2 and Digora for Windows software. RESULTS: The distribution of gray levels found using the direct and indirect methods suggests that higher exposure times are correlated to lower reproducibility rates between groups. CONCLUSION: The indirect method is a feasible alternative to the direct method in assessing the radiographic gray levels of biomaterials, insofar as significant reproducibility was observed between groups for the exposure times of 0.2 to 0.5 seconds.OBJETIVO: Comparar os métodos radiográficos direto e indireto para avaliar os níveis de cinza de biomateriais empregando os sistemas Digora for Windows e Adobe Photoshop CS2. MÉTODOS: corpos de prova confeccionados com biomateriais foram posicionados numa película radiográfica e numa placa de fósforo com protetor para a realização de exposições radiográficas e posterior avaliação dos níveis de cinza por meio dos métodos indireto e direto, respectivamente. A densidade radiográfica de cada biomaterial foi analisada usando-se os sistemas Adobe Photoshop CS2 e Digora for Windows. RESULTADOS: A distribuição de níveis de cinza observada por meio dos métodos direto e indireto sugeriu uma menor reprodutibilidade entre grupos quanto maior o tempo de exposição. CONCLUSÃO: O método indireto constitui uma alternativa viável ao método direto para avaliar os níveis radiográficos de cinza de biomateriais na medida em que foi observada uma reprodutibilidade significativa entre grupos nos tempos de exposição de 0,2 a 0,5 segundos.Federal University of São Paulo São Paulo School of Medicine Department of Image DiagnosticsUniversity of São Paulo School of DentistryUNIFESP, São Paulo School of Medicine Department of Image DiagnosticsSciELOPontifícia Universidade Católica do Rio Grande do SulUniversidade Federal de São Paulo (UNIFESP)Universidade de São Paulo (USP)Nobrega, Newton Fernando Sobreira [UNIFESP]Puchnick, Andrea [UNIFESP]Cerqueira, Leandro Kfouri Martins [UNIFESP]Costa, ClaudioAjzen, Sergio Aron [UNIFESP]2015-06-14T13:43:31Z2015-06-14T13:43:31Z2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion218-222application/pdfhttp://dx.doi.org/10.1590/S1980-65232012000300008Revista Odonto Ciência. Pontifícia Universidade Católica do Rio Grande do Sul, v. 27, n. 3, p. 218-222, 2012.10.1590/S1980-65232012000300008S1980-65232012000300008.pdf1980-6523S1980-65232012000300008http://repositorio.unifesp.br/handle/11600/6883engRevista Odonto Ciênciainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP2024-07-30T03:47:25Zoai:repositorio.unifesp.br/:11600/6883Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestbiblioteca.csp@unifesp.bropendoar:34652024-07-30T03:47:25Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false
dc.title.none.fl_str_mv In vitro study on radiographic gray levels of biomaterials using two digital image methods
Estudo in vitro dos níveis radiográficos de cinza de biomateriais utilizando duas modalidades de imagem digital
title In vitro study on radiographic gray levels of biomaterials using two digital image methods
spellingShingle In vitro study on radiographic gray levels of biomaterials using two digital image methods
Nobrega, Newton Fernando Sobreira [UNIFESP]
Digital dental radiography
radiographic density
software validation
Radiografia dentária digital
densidade radiográfica
validação de software
title_short In vitro study on radiographic gray levels of biomaterials using two digital image methods
title_full In vitro study on radiographic gray levels of biomaterials using two digital image methods
title_fullStr In vitro study on radiographic gray levels of biomaterials using two digital image methods
title_full_unstemmed In vitro study on radiographic gray levels of biomaterials using two digital image methods
title_sort In vitro study on radiographic gray levels of biomaterials using two digital image methods
author Nobrega, Newton Fernando Sobreira [UNIFESP]
author_facet Nobrega, Newton Fernando Sobreira [UNIFESP]
Puchnick, Andrea [UNIFESP]
Cerqueira, Leandro Kfouri Martins [UNIFESP]
Costa, Claudio
Ajzen, Sergio Aron [UNIFESP]
author_role author
author2 Puchnick, Andrea [UNIFESP]
Cerqueira, Leandro Kfouri Martins [UNIFESP]
Costa, Claudio
Ajzen, Sergio Aron [UNIFESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Nobrega, Newton Fernando Sobreira [UNIFESP]
Puchnick, Andrea [UNIFESP]
Cerqueira, Leandro Kfouri Martins [UNIFESP]
Costa, Claudio
Ajzen, Sergio Aron [UNIFESP]
dc.subject.por.fl_str_mv Digital dental radiography
radiographic density
software validation
Radiografia dentária digital
densidade radiográfica
validação de software
topic Digital dental radiography
radiographic density
software validation
Radiografia dentária digital
densidade radiográfica
validação de software
description PURPOSE: To compare the direct and indirect radiographic methods for assessing the gray levels of biomaterials employing the Digora for Windows and the Adobe Photoshop CS2 systems. METHODS: Specimens of biomaterials were made following manusfacturer's instructions and placed on phosphor storage plates (PSP) and on radiographic film for subsequent gray level assessment using the direct and indirect radiographic method, respectively. The radiographic density of each biomaterial was analyzed using Adobe Photoshop CS2 and Digora for Windows software. RESULTS: The distribution of gray levels found using the direct and indirect methods suggests that higher exposure times are correlated to lower reproducibility rates between groups. CONCLUSION: The indirect method is a feasible alternative to the direct method in assessing the radiographic gray levels of biomaterials, insofar as significant reproducibility was observed between groups for the exposure times of 0.2 to 0.5 seconds.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
2015-06-14T13:43:31Z
2015-06-14T13:43:31Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/S1980-65232012000300008
Revista Odonto Ciência. Pontifícia Universidade Católica do Rio Grande do Sul, v. 27, n. 3, p. 218-222, 2012.
10.1590/S1980-65232012000300008
S1980-65232012000300008.pdf
1980-6523
S1980-65232012000300008
http://repositorio.unifesp.br/handle/11600/6883
url http://dx.doi.org/10.1590/S1980-65232012000300008
http://repositorio.unifesp.br/handle/11600/6883
identifier_str_mv Revista Odonto Ciência. Pontifícia Universidade Católica do Rio Grande do Sul, v. 27, n. 3, p. 218-222, 2012.
10.1590/S1980-65232012000300008
S1980-65232012000300008.pdf
1980-6523
S1980-65232012000300008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Revista Odonto Ciência
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 218-222
application/pdf
dc.publisher.none.fl_str_mv Pontifícia Universidade Católica do Rio Grande do Sul
publisher.none.fl_str_mv Pontifícia Universidade Católica do Rio Grande do Sul
dc.source.none.fl_str_mv reponame:Repositório Institucional da UNIFESP
instname:Universidade Federal de São Paulo (UNIFESP)
instacron:UNIFESP
instname_str Universidade Federal de São Paulo (UNIFESP)
instacron_str UNIFESP
institution UNIFESP
reponame_str Repositório Institucional da UNIFESP
collection Repositório Institucional da UNIFESP
repository.name.fl_str_mv Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)
repository.mail.fl_str_mv biblioteca.csp@unifesp.br
_version_ 1814268347506753536

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