Análise da redução de artefato de contraste do branco em imagens de tomografia computadorizada de feixe cônico com materiais obturadores de canais radiculares
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2022-05-23
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Universidade Federal de Goiás
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Objective: The aim of this study was to evaluate the white contrast artifact reduction
filter of a new cone beam computed tomography software (CBCT) in root canal filling
materials. Material and methods: Eighty-four mandibular molars were selected,
prepared, filled and randomly distributed into 4 groups (n=21), corresponding to the
filling materials: G1. Sealapex®; G2. AH Plus®; G3. Endofill®; G4. Bio C-sealer®.
The mesiobuccal roots (MV) were cut mesiodistally using the microtome at 6mm
from the root apex. Five markings on the surfaces of each sample were made after
cutting (1 on the “Z” axis, 2 on the “X” axis and 2 on the “Y’ axis) for guidance during
measurements of the filling materials and subsequent synchronization of the CBCT
images. Following root canal fillings and root cutting, CBCTs were acquired using
the Prexion 3D Elite®. Measurements of the dimensions of the filling materials were
obtained in the mesiodistal and buccolingual directions using a digital micrometer
associated with the operating microscope. The image measurements of the root
canals filling materials of the mesial roots were performed with the linear
measurement tool of the e-Vol DX software, configured for millesimal
measurements with the Blooming Artefact Reduction (BAR 2) filter. Statistical data
were evaluated with Van der Waerden's non-parametric analysis of variance,
followed by Tukey's test applied to normalized data. Comparisons were performed
in a significance level α = 5%. Results: The measurements of the filling materials
using the e-Vol DX software and the digital micrometer did not show significant
differences between them (p >0.05). Conclusion: The use of the BAR 2 filter of the
e-Vol DX software removed the interference of white contrast artifact in CBCT
images with root canal filling materials.
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ENDO, M. M. Análise da redução de artefato de contraste do branco em imagens de tomografia computadorizada de feixe cônico com materiais obturadores de canais radiculares. 2022. 108 f. Tese (Doutorado em Odontologia) - Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, 2022.