Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/241980
Type: Artigo de periódico
Title: Influence Of The Artefact Reduction Algorithm Of Picasso Trio Cbct System On The Diagnosis Of Vertical Root Fractures In Teeth With Metal Posts
Author: Bezerra
I. S. Q.; Neves
F. S.; Vasconcelos
T. V.; Ambrosano
G. M. B.; Freitas
D. Q.
Abstract: Objectives: To assess the influence of the artefact reduction algorithm (AR) available on the Picasso Trio 3D (R) imaging system (Vatech, Hwaseong, Republic of Korea) on image quality [greyscale values, contrast-to-noise ratio (CNR) and artefact formation] and diagnosis of vertical root fractures (VRFs) in the teeth with intracanal metal posts. Methods: 30 uniradicular teeth had their crowns removed and their roots endodontically treated to receive intracanal metal posts. In 20 teeth, both complete (n = 10) and incomplete (n = 10) VRFs were created. Each tooth was scanned twice, with and without AR activation. The mean and variation of greyscale values, as well as CNR, were calculated for all images. Subsequently, an evaluator compared the amount of artefact (cupping, white streaks and dark bands) in all images. Five evaluators rated for VRF presence using a five-point scale. Results: Mean greyscale values and CNR were significantly decreased in images acquired with the AR. The usage of the algorithm promoted an overall reduction of image artefacts. Regarding the diagnosis of complete and incomplete VRFs, the use of the AR had an overall negative impact on specificity and accuracy. Conclusions: While indeed reducing artefact formation, the use of the AR, instead of improving the impact on the diagnosis of VRFs in teeth with intracanal metal posts, had a negative impact on the diagnosis.
Subject: Beam Computed-tomography
Endodontically Treated Teeth
In-vitro
Periapical Radiography
Ct
Scan
Country: LONDON
Editor: BRITISH INST RADIOLOGY
Citation: Influence Of The Artefact Reduction Algorithm Of Picasso Trio Cbct System On The Diagnosis Of Vertical Root Fractures In Teeth With Metal Posts. British Inst Radiology, v. 44, p. JUN-2015.
Rights: embargo
Identifier DOI: 10.1259/dmfr.20140428
Address: http://www.birpublications.org/doi/abs/10.1259/dmfr.20140428?url_ver=Z39.88-2003&rfr_id=ori%3Arid%3Acrossref.org&rfr_dat=cr_pub%3Dpubmed&
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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