Evidence map›Paper›PMID 41822144›Full record

ArticleInternational journal of dentistry2026

Comparative Analysis of Artifact Expression in Zirconia and Graphene Crowns in CBCT Images From Different Systems.

Sâmia Mouzinho-Machado, Rocharles Cavalcante Fontenele, Fernanda Bulhões Fagundes, Bahaaeldeen M Elgarba, Reinhilde Jacobs, Sergio Lins de-Azevedo-Vaz

Abstract read
In one paragraph

Article in International journal of dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

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

1 citing paper in PubMed.

  1. Article
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.

Sâmia Mouzinho-MachadoState University of Campinas, Campinas, Brazil, unicamp.br.ORCID https://orcid.org/0000-0002-9144-0735
Rocharles Cavalcante FonteneleDepartment of Stomatology, Public Health and Forensic Dentistry, Division of Oral Radiology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil, usp.br.ORCID https://orcid.org/0000-0002-6426-9768
Fernanda Bulhões FagundesState University of Campinas, Campinas, Brazil, unicamp.br.ORCID https://orcid.org/0000-0002-9777-4197
Bahaaeldeen M ElgarbaOMFS-IMPATH Research Group - Department of Imaging and Pathology, Faculty of Medicine, University Hospitals Leuven, Katholieke Universiteit Leuven, Leuven, Belgium, uzleuven.be.ORCID https://orcid.org/0000-0003-4936-6567
Reinhilde JacobsOMFS-IMPATH Research Group - Department of Imaging and Pathology, Faculty of Medicine, University Hospitals Leuven, Katholieke Universiteit Leuven, Leuven, Belgium, uzleuven.be.ORCID https://orcid.org/0000-0002-3461-0363
Sergio Lins de-Azevedo-VazState University of Campinas, Campinas, Brazil, unicamp.br.ORCID https://orcid.org/0000-0001-5578-5309

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Comparing artifact expression in emerging materials, like zirconia, known for high artifact generation, to lower-density materials like graphene is essential to find ways to minimize it. Evaluating these materials across cone-beam computed tomography (CBCT) systems and acquisition protocols provides a comprehensive performance assessment. Purpose: To compare zirconia and graphene-reinforced crowns' volumetric alteration artifact, surface area distortion, and general artifact expression on CBCT images using three systems and three protocols. Materials and Methods: An anthropomorphic phantom covered with Mix-D soft tissue-simulator material was scanned using 3 CBCT systems: 3D Accuitomo 170, NewTom VGi evo, and Veraview X800. A single zirconia or graphene crown was placed on the right mandibular second premolar. Three acquisition protocols were used: medium field of view (FOV) with standard resolution (SR), small FOV with SR, and small FOV with high resolution (HR). The CBCT images of the crowns were segmented and analyzed using the 3-matic Medical 17.0 (Materialise) software program to obtain the crown's volume and surface area. The root mean square error (RMSE) between the segmentation results and a reference standard (micro-CT scanning) was used to measure general artifact expression. A two-way repeated measures analysis of variance (ANOVA) was performed to assess the parameters' influence in the volumetric alteration artifact, surface area distortion, and general artifact expression. Results: The zirconia crown exhibited significantly more volumetric alteration artifact, surface area distortion, and general artifact expression than the graphene crown across all CBCT systems ( Conclusions: Zirconia's greater volumetric alteration, surface detail distortion and loss, and artifact expression in CBCT imaging can be mitigated by using lower-density materials like graphene. Furthermore, optimizing CBCT exposure protocols may independently reduce artifacts and surface distortion, regardless of the material's density.

Identifiers

PMID41822144
PMCPMC12976806

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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.