Evidence map›Paper›PMID 29582689›Full record

ArticleDento maxillo facial radiology2018

Metallic materials in the exomass impair cone beam CT voxel values.

Amanda P Candemil, Benjamin Salmon, Deborah Q Freitas, Glaucia Mb Ambrosano, Francisco Haiter-Neto, Matheus L Oliveira

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Article in Dento maxillo facial radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Amanda P Candemil1 Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas , Piracicaba , Brazil.
Benjamin Salmon2 Department of Dental Medicine,  Bretonneau Hospital, HUPNVS, AP-HP , Paris , France.
Deborah Q Freitas1 Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas , Piracicaba , Brazil.
Glaucia Mb Ambrosano4 Department of Community Dentistry, Piracicaba Dental School, University of Campinas , Piracicaba , Brazil.
Francisco Haiter-Neto1 Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas , Piracicaba , Brazil.
Matheus L Oliveira1 Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas , Piracicaba , Brazil.ORCID http://orcid.org/0000-0002-8054-8759

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo assess the influence of artefacts arising from metallic materials in the exomass on cone beam CT (CBCT) voxel values.

methodsCBCT scans were taken of a phantom composed of 16 tubes filled with a homogeneous hyperdense solution and metallic materials of different compositions (titanium, cobalt-chromium and amalgam) and numbers (one, two and three). The phantom was centred in a 5 × 5 cm field of view such that the metallic materials were located in the exomass, using three CBCT units. Voxel values were obtained from the 16 homogeneous areas and averaged. Also, standard deviation was calculated to measure voxel value variability. Analysis of variance in a factorial scheme with additional treatment 3 × 3 + 3 (material × number + control) was performed, followed by Tukey's test for multiple comparisons, and Dunnett's test for comparisons with the control groups, at a level of significance of 5%.

resultsMetallic material in the exomass significantly reduced the mean voxel value in the CS9300 and Picasso Trio units, and increased voxel value variability in all CBCT units. Amalgam was the material that induced significantly greater reduction of the mean voxel value in the CS9300 and Picasso Trio units, and significantly greater increase in the NewTom Giano. Voxel value variability was significantly greater for amalgam in all conditions. The presence of one cylinder induced significantly less pronounced effects on the mean voxel value and voxel value variability.

conclusionsArtefacts arising from metallic materials in the exomass have a negative influence on CBCT voxel values.

Indexed as

ArtifactsCone-Beam Computed TomographyDental MaterialsPhantoms, ImagingDental Materials

Identifiers

PMID29582689
PMCPMC6196053

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.