Influence of image filters on the reproducibility of measurements of alveolar bone loss

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dc.contributor.authorAlves, Wivian Eiras Garcia Wong [UNESP]
dc.contributor.authorOno, Evelise [UNESP]
dc.contributor.authorTanaka, Jefferson Luis Oshiro [UNESP]
dc.contributor.authorMedici Filho, Edmundo [UNESP]
dc.contributor.authorDe Moraes, Luiz César [UNESP]
dc.contributor.authorDe Moraes, Mari Eli Leonelli [UNESP]
dc.contributor.authorCastilho, Julio Cezar de Melo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:22:01Z
dc.date.available2014-05-27T11:22:01Z
dc.date.issued2006-11-01
dc.description.abstractThe reproducibility of measurements of alveolar bone loss on radiographs may be a problem on epidemiologic studies, as they are based on comparisons of the diagnosis of various examiners. The aim of the present research paper was to assess the inter- and intra-examiner reproducibility of measurements of the interproximal alveolar bone loss on non-manipulated digital radiographs and after the application of image filters. Five Oral Radiologists measured the distance between the cementoenamel junction (CEJ) to the alveolar crest or to the deepest point of the bony defect on 12 interproximal digital radiographs of molars and bicuspids of a dry human skull. The digital manipulation and the linear measurements were obtained with the Trophy Windows software (Throphy®). For each image, six different versions were created: 1) non-manipulated; 2) bright-contrast adjustment; 3) negative; 4) negative with brightness-contrast adjustment; 5) pseudo-colored; 6) pseudo-colored with brightness-contrast adjustment. In order to prevent interpretation bias because of the repetition of measurements, the examiners measured the radiographs in a random sequence. The two-way ANOVA test at 5% level of significance to compare the means of readings of the same operator with each filter indicated p<0.05 for the majority of operators, while the comparison between the mean values of operators using the same filter indicated p>0.05 for all filters. Based on the results, we concluded that linear measurements of interproximal alveolar bone loss on digital radiographs are highly reproducible among examiners. Nevertheless, the application of image filters significantly influenced the degree of intra-examiner reproducibility. Some filters even reduced the reproducibility of intra-examiner readings.en
dc.description.affiliationSão Paulo State University
dc.description.affiliationDepartment of Biosciences and Oral Diagnosis Sao Paulo State University
dc.description.affiliationFaculdade de Odontologia de São José Dos Campos Departamento de Diagnóstico e Cirurgia, Av. Eng Francisco Jose Longo, 777, 12245-000 - S. Jose dos Campos - SP
dc.description.affiliationUnespSão Paulo State University
dc.description.affiliationUnespDepartment of Biosciences and Oral Diagnosis Sao Paulo State University
dc.format.extent415-420
dc.identifierhttp://dx.doi.org/10.1590/S1678-77572006000600006
dc.identifier.citationJournal of Applied Oral Science, v. 14, n. 6, p. 415-420, 2006.
dc.identifier.doi10.1590/S1678-77572006000600006
dc.identifier.file2-s2.0-33847014199.pdf
dc.identifier.issn1678-7757
dc.identifier.issn1678-7765
dc.identifier.lattes0450226572005125
dc.identifier.lattes9300670753766517
dc.identifier.scieloS1678-77572006000600006
dc.identifier.scopus2-s2.0-33847014199
dc.identifier.urihttp://hdl.handle.net/11449/69203
dc.language.isoeng
dc.relation.ispartofJournal of Applied Oral Science
dc.relation.ispartofjcr1.709
dc.relation.ispartofsjr0,645
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectDigital radiography
dc.subjectLinear measurements
dc.subjectPeriodontal disease
dc.titleInfluence of image filters on the reproducibility of measurements of alveolar bone lossen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/jaos/paboutj.htm
unesp.author.lattes0450226572005125
unesp.author.lattes9300670753766517
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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Artigos - Diagnóstico e Cirurgia - ICT