Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/319845
Type: Artigo de Periódico
Title: Accuracy Of Digital Subtraction Radiography In The Detection Of Vertical Root Fractures
Author: Queiroz
PM; Nascimento
HAR; da Paz
TDJ; Anacleto
FN; Freitas
DQ
Abstract: Introduction: The objective of this study was to evaluate the accuracy of digital subtraction radiography in the diagnosis of vertical root fractures (VRFs). Methods: Twenty decoronated uniradicular human teeth. were placed in the alveoli of a dry mandible and radio-graphed twice, first without (unfilled roots) and then with (filled roots) a gutta-percha cone placed into the root canal. Roots were then removed from the dry mandible, and vertical fractures were created with the aid of a universal testing machine. The fractured roots were repositioned in the mandibular alveoli and again radiographed twice. Radiographic images were subtracted by using the Regeemy software in 3 test situations: group 1, initial radiographic images of unfilled roots and images of fractured or non-fractured unfilled roots; group 2, initial radiographic images of unfilled roots and images of fractured or non-fractured filled roots; and group 3, initial radiographic images of filled roots and images of fractured or non-fractured filled roots. Three examiners evaluated all the original digital radiographs, as well as the subtracted images, for the presence or absence of VRFs. Numerical data were subject to statistical analysis with the use of receiver operator characteristic (ROC) curves. Results: The areas under the ROC curve for groups 1, 2, and 3 were 0.86, 0.73, and 0.66, respectively. For the original digital radiographs, areas under the ROC curve were 0.80 (without gutta-percha) and 0.73 (with gutta-percha). No statistically significant differences were found between subtracted and original images. Conclusions: Digital subtraction radiography could be considered as an alternative tool for the investigation of VRFs because of its comparable diagnostic accuracy to existing methods.
Subject: Digital Subtraction Radiography (dsr)
Radiography
Vertical Root Fracture
Editor: ELSEVIER SCIENCE INC
Rights: fechado
Identifier DOI: 10.1016/j.joen.2016.03.003
Address: http://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0099239916300309
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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