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

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dc.contributor.authorOchoa-Rodríguez, Victor Manuel [UNESP]
dc.contributor.authorWilches-Visbal, Jorge Homero
dc.contributor.authorRoma, Barbara [UNESP]
dc.contributor.authorCoaguila-Llerena, Hernán [UNESP]
dc.contributor.authorTanomaru-Filho, Mário [UNESP]
dc.contributor.authorGonçalves, Andréa [UNESP]
dc.contributor.authorSpin-Neto, Rubens
dc.contributor.authorFaria, Gisele [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionSchool of Oral Sciences
dc.contributor.institutionSchool of Health
dc.date.accessioned2020-12-12T02:16:34Z
dc.date.available2020-12-12T02:16:34Z
dc.date.issued2020-01-01
dc.description.abstractThe 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.en
dc.description.affiliationUniversidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Restorative Dentistry
dc.description.affiliationUniversity of Magdalena School of Oral Sciences Department of Dentistry
dc.description.affiliationUniversidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Oral Diagnosis and Surgery
dc.description.affiliationAarhus University School of Health Department of Dentistry and Oral Health
dc.description.affiliationUnespUniversidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Restorative Dentistry
dc.description.affiliationUnespUniversidade Estadual Paulista-Unesp Araraquara School of Dentistry Department of Oral Diagnosis and Surgery
dc.identifierhttp://dx.doi.org/10.1590/1807-3107BOR-2020.VOL34.0080
dc.identifier.citationBrazilian Oral Research, v. 34.
dc.identifier.doi10.1590/1807-3107BOR-2020.VOL34.0080
dc.identifier.fileS1806-83242020000100258.pdf
dc.identifier.issn1807-3107
dc.identifier.issn1806-8324
dc.identifier.scieloS1806-83242020000100258
dc.identifier.scopus2-s2.0-85088484294
dc.identifier.urihttp://hdl.handle.net/11449/200808
dc.language.isoeng
dc.relation.ispartofBrazilian Oral Research
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectDental
dc.subjectDental cements
dc.subjectDigital
dc.subjectEndodontics
dc.subjectMaterials testing
dc.subjectRadiography
dc.subjectRadiology
dc.titleRadiopacity of endodontic materials using two models for conversion to millimeters of aluminumen
dc.typeArtigo
unesp.author.orcid0000-0003-0596-6683[1]
unesp.author.orcid0000-0003-3649-5079[2]
unesp.author.orcid0000-0002-7694-4732[3]
unesp.author.orcid0000-0002-9991-718X[4]
unesp.author.orcid0000-0002-2574-4706[5]
unesp.author.orcid0000-0001-8498-8199[6]
unesp.author.orcid0000-0002-9562-0610[7]
unesp.author.orcid0000-0001-7030-3718[8]

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Artigos - Odontologia Restauradora - FOAR
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