Evaluation of metal artefacts for two CBCT devices with a new dental arch phantom.

Dento Maxillo Facial Radiology
Luciano Augusto Cano MartinsFrancisco Haiter-Neto

Abstract

To create a new phantom design to evaluate the real impact of artefacts caused by titanium on bone structures in cone beam CT images considering different positions and quantity of metals in the dental arch, with and without metal artefact reduction (MAR). A three cylindrical polymethyl methacrylate (PMMA) plate phantom was designed containing eight perforations arranged to simulate the lower dental arch in the intermediate plate. Three titanium cylinders were positioned in different locations and quantities to test different clinical conditions and to quantify the impact of the metal artefact around five bone cylinders. Scans were carried out in seven different protocols (Control, A-F) in two cone beam CT devices (OP300 Maxio and Picasso Trio). Eight regions of interest around each cortical and trabecular bone were used to measure the grey value standard deviation corresponding the artefact expression in the Image J software. Both the artefact expression and the MAR effect were assessed using the Wilcoxon, Friedman (Dunn) and Kruskal-Wallis tests (significance level of 5%). For both devices, MAR was statistically efficient only for the protocols E, and F. Protocol F (three metals on the adjacent area of the analysis region) sh...Continue Reading

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Dec 12, 2018·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Karla de Faria VasconcelosFrancisco Haiter-Neto

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Citations

Feb 8, 2021·Odontology·Hazuki MiyashitaMasaru Igarashi
Jun 11, 2021·Dento Maxillo Facial Radiology·Fernanda Coelho-SilvaSergio Lins de-Azevedo-Vaz
Jul 9, 2021·Imaging Science in Dentistry·Bianca Rodrigues TerrabuioCássia Maria Fischer Rubira

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