Evidence map›Paper›PMID 33625608›Full record

ArticleClinical oral investigations2021

Do the number of basis images and metal artifact reduction affect the production of artifacts near and far from zirconium dental implants in CBCT?

Eduarda Helena Leandro Nascimento, Hugo Gaêta-Araujo, Rocharles Cavalcante Fontenele, Nicolly Oliveira-Santos, Christiano Oliveira-Santos, Deborah Queiroz Freitas

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Article in Clinical oral investigations, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed, 22 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

6 authors at 2 institutions in 1 country.

Eduarda Helena Leandro NascimentoDepartment of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
Hugo Gaêta-AraujoDepartment of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
Rocharles Cavalcante FonteneleDepartment of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil. rocharlesf@gmail.com.ORCID http://orcid.org/0000-0002-6426-9768
Nicolly Oliveira-SantosDepartment of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
Christiano Oliveira-SantosDepartment of Stomatology, Public Oral Health and Forensic Dentistry, Division of Oral Radiology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil.
Deborah Queiroz FreitasDepartment of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
Universidade Estadual de Campinas (UNICAMP) · BRUniversidade de São Paulo · BR

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior 001
6 · The paper itself

Abstract

objectivesThis study aimed to evaluate the influence of the number of basis images and the metal artifact reduction (MAR) tool on the production of artifacts near and far from a zirconium implant in cone-beam computed tomography (CBCT). MATERIALS AND

methodsCBCT scans of a mandible were acquired before and after insertion of an implant, using 450 and 720 basis images, with and without MAR activation. The mean and standard deviation (SD) of the gray values of the regions of interest (ROIs) located on the cortices adjacent to the implant and at different distances from it (in the soft tissue) were calculated. The mean of the gray values was used to calculate the absolute contrast difference (ACD) between the control and implant scans.

resultsIn general, the number of basis images did not affect the SD and the ACD values of the buccal and lingual ROIs (p > 0.05). The implant increased the SD in the lingual cortical plate (p < 0.05). In this case, MAR activation decreased SD (p < 0.05). All ROIs located at different distances from the implant showed higher SD on scans acquired with 450 basis images (p < 0.05), regardless of MAR condition.

conclusionsA higher number of basis images reduces the magnitude of artifacts but does not influence the image quality in bone cortical plates. MAR improves the image in the areas most affected by artifacts. CLINICAL RELEVANCE: The number of basis images is known as a factor capable of influencing the image quality and radiation dose for the patient. Therefore, it is important to investigate its effect on the expression of artifacts in the CBCT images.

Indexed as

Dental ImplantsSpiral Cone-Beam Computed TomographyArtifactsCone-Beam Computed TomographyHumansMandibleZirconiumDental ImplantsZirconiumArtifactsCone-beam computed tomographyDental implantZirconium

Identifiers

PMID33625608
OpenAlexW3132859612

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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.