Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum

Detalhes bibliográficos
Autor(a) principal: Ochoa-Rodríguez, Victor Manuel [UNESP]
Data de Publicação: 2020
Outros Autores: Wilches-Visbal, Jorge Homero, Roma, Barbara [UNESP], Coaguila-Llerena, Hernán [UNESP], Tanomaru-Filho, Mário [UNESP], Gonçalves, Andréa [UNESP], Spin-Neto, Rubens, Faria, Gisele [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/1807-3107BOR-2020.VOL34.0080
http://hdl.handle.net/11449/200808
Resumo: The aims of the present study were to compare conventional radiography, radiographs digitized with a scanner or photographic camera, and digital radiography, used to evaluate the radiopacity of endodontic materials, and to compare the accuracy of linear and quadratic models used to convert radiopacity values to equivalent millimeters of aluminum (mm Al). Specimens of AH Plus, Endofill, Biodentine and BioMTA materials (n = 8) were radiographed next to an aluminum step-wedge using radiographic films and digital radiography systems (FONA CMOS sensor, Kodak CMOS sensor and photosensitive phosphor plate-PSP). Conventional radiographs were digitized using a scanner or photographic digital camera. Digital images of all the radiographic systems were evaluated using dedicated software. Optical density units (ODU) of the specimens and the aluminum step-wedge were evaluated by a photo-densitometer (PTDM), used in conventional radiographs. The radiopacity in equivalent mm Al of the materials was determined by linear and quadratic models, and the coefficients of determination (R2) values were calculated for each model. Radiopacity of the materials ranged from-9% to 25% for digital systems and digitized radiographs, compared to the PTDM (p < 0.05). The R2 values of the quadratic model were higher than those of the linear model. In conclusion, the FONA CMOS sensor showed the lowest radiopacity variability of the methodologies used, compared with the PTDM, except for the BioMTA group (higher than PTDM). The quadratic model showed higher R2 values than the linear model, thus indicating better accuracy and possible adoption to evaluate the radiopacity of endodontic materials.
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spelling Radiopacity of endodontic materials using two models for conversion to millimeters of aluminumDentalDental cementsDigitalEndodonticsMaterials testingRadiographyRadiologyThe aims of the present study were to compare conventional radiography, radiographs digitized with a scanner or photographic camera, and digital radiography, used to evaluate the radiopacity of endodontic materials, and to compare the accuracy of linear and quadratic models used to convert radiopacity values to equivalent millimeters of aluminum (mm Al). Specimens of AH Plus, Endofill, Biodentine and BioMTA materials (n = 8) were radiographed next to an aluminum step-wedge using radiographic films and digital radiography systems (FONA CMOS sensor, Kodak CMOS sensor and photosensitive phosphor plate-PSP). Conventional radiographs were digitized using a scanner or photographic digital camera. Digital images of all the radiographic systems were evaluated using dedicated software. Optical density units (ODU) of the specimens and the aluminum step-wedge were evaluated by a photo-densitometer (PTDM), used in conventional radiographs. The radiopacity in equivalent mm Al of the materials was determined by linear and quadratic models, and the coefficients of determination (R2) values were calculated for each model. Radiopacity of the materials ranged from-9% to 25% for digital systems and digitized radiographs, compared to the PTDM (p < 0.05). The R2 values of the quadratic model were higher than those of the linear model. In conclusion, the FONA CMOS sensor showed the lowest radiopacity variability of the methodologies used, compared with the PTDM, except for the BioMTA group (higher than PTDM). The quadratic model showed higher R2 values than the linear model, thus indicating better accuracy and possible adoption to evaluate the radiopacity of endodontic materials.Universidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Restorative DentistryUniversity of Magdalena School of Oral Sciences Department of DentistryUniversidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Oral Diagnosis and SurgeryAarhus University School of Health Department of Dentistry and Oral HealthUniversidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Restorative DentistryUniversidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Oral Diagnosis and SurgeryUniversidade Estadual Paulista (Unesp)School of Oral SciencesSchool of HealthOchoa-Rodríguez, Victor Manuel [UNESP]Wilches-Visbal, Jorge HomeroRoma, Barbara [UNESP]Coaguila-Llerena, Hernán [UNESP]Tanomaru-Filho, Mário [UNESP]Gonçalves, Andréa [UNESP]Spin-Neto, RubensFaria, Gisele [UNESP]2020-12-12T02:16:34Z2020-12-12T02:16:34Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/1807-3107BOR-2020.VOL34.0080Brazilian Oral Research, v. 34.1807-31071806-8324http://hdl.handle.net/11449/20080810.1590/1807-3107BOR-2020.VOL34.0080S1806-832420200001002582-s2.0-85088484294S1806-83242020000100258.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Oral Researchinfo:eu-repo/semantics/openAccess2024-09-27T18:04:00Zoai:repositorio.unesp.br:11449/200808Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-27T18:04Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
title Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
spellingShingle Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
Ochoa-Rodríguez, Victor Manuel [UNESP]
Dental
Dental cements
Digital
Endodontics
Materials testing
Radiography
Radiology
title_short Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
title_full Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
title_fullStr Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
title_full_unstemmed Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
title_sort Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
author Ochoa-Rodríguez, Victor Manuel [UNESP]
author_facet Ochoa-Rodríguez, Victor Manuel [UNESP]
Wilches-Visbal, Jorge Homero
Roma, Barbara [UNESP]
Coaguila-Llerena, Hernán [UNESP]
Tanomaru-Filho, Mário [UNESP]
Gonçalves, Andréa [UNESP]
Spin-Neto, Rubens
Faria, Gisele [UNESP]
author_role author
author2 Wilches-Visbal, Jorge Homero
Roma, Barbara [UNESP]
Coaguila-Llerena, Hernán [UNESP]
Tanomaru-Filho, Mário [UNESP]
Gonçalves, Andréa [UNESP]
Spin-Neto, Rubens
Faria, Gisele [UNESP]
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
School of Oral Sciences
School of Health
dc.contributor.author.fl_str_mv Ochoa-Rodríguez, Victor Manuel [UNESP]
Wilches-Visbal, Jorge Homero
Roma, Barbara [UNESP]
Coaguila-Llerena, Hernán [UNESP]
Tanomaru-Filho, Mário [UNESP]
Gonçalves, Andréa [UNESP]
Spin-Neto, Rubens
Faria, Gisele [UNESP]
dc.subject.por.fl_str_mv Dental
Dental cements
Digital
Endodontics
Materials testing
Radiography
Radiology
topic Dental
Dental cements
Digital
Endodontics
Materials testing
Radiography
Radiology
description The aims of the present study were to compare conventional radiography, radiographs digitized with a scanner or photographic camera, and digital radiography, used to evaluate the radiopacity of endodontic materials, and to compare the accuracy of linear and quadratic models used to convert radiopacity values to equivalent millimeters of aluminum (mm Al). Specimens of AH Plus, Endofill, Biodentine and BioMTA materials (n = 8) were radiographed next to an aluminum step-wedge using radiographic films and digital radiography systems (FONA CMOS sensor, Kodak CMOS sensor and photosensitive phosphor plate-PSP). Conventional radiographs were digitized using a scanner or photographic digital camera. Digital images of all the radiographic systems were evaluated using dedicated software. Optical density units (ODU) of the specimens and the aluminum step-wedge were evaluated by a photo-densitometer (PTDM), used in conventional radiographs. The radiopacity in equivalent mm Al of the materials was determined by linear and quadratic models, and the coefficients of determination (R2) values were calculated for each model. Radiopacity of the materials ranged from-9% to 25% for digital systems and digitized radiographs, compared to the PTDM (p < 0.05). The R2 values of the quadratic model were higher than those of the linear model. In conclusion, the FONA CMOS sensor showed the lowest radiopacity variability of the methodologies used, compared with the PTDM, except for the BioMTA group (higher than PTDM). The quadratic model showed higher R2 values than the linear model, thus indicating better accuracy and possible adoption to evaluate the radiopacity of endodontic materials.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-12T02:16:34Z
2020-12-12T02:16:34Z
2020-01-01
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/10.1590/1807-3107BOR-2020.VOL34.0080
Brazilian Oral Research, v. 34.
1807-3107
1806-8324
http://hdl.handle.net/11449/200808
10.1590/1807-3107BOR-2020.VOL34.0080
S1806-83242020000100258
2-s2.0-85088484294
S1806-83242020000100258.pdf
url http://dx.doi.org/10.1590/1807-3107BOR-2020.VOL34.0080
http://hdl.handle.net/11449/200808
identifier_str_mv Brazilian Oral Research, v. 34.
1807-3107
1806-8324
10.1590/1807-3107BOR-2020.VOL34.0080
S1806-83242020000100258
2-s2.0-85088484294
S1806-83242020000100258.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Oral Research
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Scopus
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 repositoriounesp@unesp.br
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