Linear and logarithmic subtraction for detecting enamel subsurface demineralization

dc.creatorHaiter-Neto, F
dc.creatorFerreira, RI
dc.creatorTabchoury, CPM
dc.creatorBoscolo, F
dc.date2005
dc.dateMAY
dc.date2014-11-14T18:06:22Z
dc.date2015-11-26T16:07:46Z
dc.date2014-11-14T18:06:22Z
dc.date2015-11-26T16:07:46Z
dc.date.accessioned2018-03-28T22:56:26Z
dc.date.available2018-03-28T22:56:26Z
dc.identifierDentomaxillofacial Radiology. British Inst Radiology, v. 34, n. 3, n. 133, n. 139, 2005.
dc.identifier0250-832X
dc.identifierWOS:000230206700001
dc.identifier10.1259/dmfr/92119765
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/81071
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/81071
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/81071
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1266215
dc.descriptionObjective: To compare the diagnostic performance of linear and logarithmically contrast-enhanced subtraction images, acquired with digital and digitized radiographs, in detecting approximal enamel subsurface demineralization. Methods: Fifty caries-free human third molars were immersed in a demineralizing solution for 60, 75, 90, and 120 days, in order to induce artificial enamel subsurface demineralization. The teeth were coated with nail varnish, leaving only a circular window of approximately 7 mm(2) in one of the approximal surfaces, allowing contact with the solution. Standardized radiographs of the teeth were taken prior to and after the demineralization period with three digital systems, CygnusRay MPS (R), DenOptix (R) and DIGORA (R), and InSight (R) film. Conventional, digital and digitized radiographs were assessed by three experienced radiologists. Linear and logarithmically contrast-enhanced subtraction images were acquired and then examined by a fourth independent radiologist. For the validation of the radiographic diagnosis, the enamel test areas were submitted to Knoop microhardness profiling. Radiographic interpretation data was evaluated using ROC analysis. The areas under the ROC curves (A(z)) were compared by the chi-squared test. The level of significance was set at P = 0.05. Results: No significant differences were found between linear and logarithmically contrast-enhanced subtraction images, acquired with the four studied modalities: CygnusRay MPS (R)(linear) (A(z) = 0.95), CygnusRay MPSlog(R) (A(z) = 0.98), DenOptix(linear)(R) (A(z) = 0.97), DenOptixe(log)(R)(A(z) = 0.99), DIGORA(linear)(R) inem (A(z) = 0.98), DIGORA(log)(R) (A(z) = 0.98), digitized radiography(linear) (A(z) = 0.99), digitized radiography(linear) (A(z) = 0.99). Conclusion: Linear and logarithmically contrast-enhanced subtraction images, acquired with digital and digitized radiographs, were diagnostically comparable for assessing enamel subsurface demineralization.
dc.descriptiono TEXTO COMPLETO DESTE ARTIGO, ESTARÁ DISPONÍVEL À PARTIR DE AGOSTO DE 2015.
dc.description34
dc.description3
dc.description133
dc.description139
dc.languageen
dc.publisherBritish Inst Radiology
dc.publisherLondon
dc.publisherInglaterra
dc.relationDentomaxillofacial Radiology
dc.relationDentomaxillofac. Radiol.
dc.rightsembargo
dc.sourceWeb of Science
dc.subjectdental caries
dc.subjectdiagnosis
dc.subjectdiagnostic imaging
dc.subjectsubtraction techniques
dc.subjectRadiographic Caries Diagnosis
dc.subjectContrast Enhancement
dc.subjectDigital Radiography
dc.subjectApproximal Enamel
dc.subjectCarious Lesions
dc.subjectDental-caries
dc.subjectMineral Loss
dc.subjectImages
dc.subjectExposure
dc.subjectFilm
dc.titleLinear and logarithmic subtraction for detecting enamel subsurface demineralization
dc.typeArtículos de revistas


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