Evidence map›Paper›PMID 34289314›Full record

ArticleDento maxillo facial radiology2022

CBCT image artefacts generated by implants located inside the field of view or in the exomass.

Husniye Demirturk Kocasarac, Lisa J Koenig, Gulbahar Ustaoglu, Matheus Lima Oliveira, Deborah Queiroz Freitas

Open access · bronzeAbstract read
In one paragraph

Article in Dento maxillo facial radiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.5field-weighted citation impact, top 7% of its field
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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

15 citing papers in PubMed, 21 citations in OpenAlex.

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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

5 authors at 3 institutions in 3 countries.

Husniye Demirturk KocasaracDivision of Oral and Maxillofacial Radiology, Department of General Dental Sciences, Marquette University School of Dentistry, Milwaukee, Wisconsin, United States.ORCID 0000-0002-4808-0949
Lisa J KoenigDivision of Oral and Maxillofacial Radiology, Department of General Dental Sciences, Marquette University School of Dentistry, Milwaukee, Wisconsin, United States.
Gulbahar UstaogluDepartment of Periodontics, Bolu Abant Izzet Baysal University Faculty of Dentistry, BAIBU Golkoy Yerleskesi, Merkez/Bolu, Turkey.
Matheus Lima OliveiraDivision of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.ORCID 0000-0002-8054-8759
Deborah Queiroz FreitasDivision of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.ORCID 0000-0002-1425-5966
Marquette University · USUniversidade Estadual de Campinas (UNICAMP) · BRBolu Abant İzzet Baysal University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo compare artefacts in cone-beam computed tomography (CBCT) arising from implants of different materials located either inside the field of view (FOV) or in the exomass, and to test different image-acquisition parameters to reduce them.

methodsCBCT scans of a human mandible prepared with either a titanium, titanium-zirconium, or zirconia implant were acquired with the Planmeca ProMax utilizing FOV sizes of 8 × 5 cm and 4 × 5 cm, which placed the implant inside the FOV (8 × 5 cm) or in the exomass (4 × 5 cm). The scanning parameters considered three conditions of metal artefact reduction (MAR), disabled, low, and high, and 2 kVp levels (80 and 90). The standard deviation (SD) of grey values of regions of interest was obtained. The effects of implant material, implant position, MAR condition, kVp level, and their interactions were evaluated by Analysis of Variance (α = 5%).

resultsThe zirconia implant produced the highest SD values (more heterogeneous grey values, corresponding to greater artefact expression), followed by titanium-zirconium, and titanium. In general, implants in the exomass produced images with higher SD values than implants inside the FOV. MAR was effective in decreasing SD values, especially from the zirconia implant, only when the implant was inside the FOV. Images with 80 kVp had higher SD values than those with 90 kVp, regardless of the other factors (

conclusionsImplants in the exomass lead to greater artefact expression than when they are inside the FOV. Special attention should be paid to scanning parameters that reduce metal-related artefacts, such as MAR activation and increasing kVp. This is especially important with a zirconia implant inside the FOV.

Indexed as

Dental ImplantsSpiral Cone-Beam Computed TomographyArtifactsCone-Beam Computed TomographyHumansMandibleDental ImplantsArtefactsCBCTTitaniumX-RaysZirconia

Identifiers

PMID34289314
PMCPMC8802698
OpenAlexW3186967579

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.