Evidence map›Paper›PMID 40038165›Full record

ArticleOral radiology2025

Evaluation of the effect of reducing metal artifacts in multi-detector CT imaging of zirconia and titanium implants.

Hideki Suito, Hozumi Yoshihara, Naoki Maeda, Ryosuke Kasai, Tadashi Inoue, Masafumi Amano, Yuuri Oku, Keiko Fujimoto, Kan Nagao

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Article in Oral radiology, 2025. 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

5 · Who and what money

Authors and funding

9 authors.

Hideki SuitoDepartment of Oral and Maxillofacial Radiology, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima, 770-8504, Japan. suito.hideki@tokushima-u.ac.jp.ORCID 0000-0002-3059-2700
Hozumi YoshiharaDepartment of Oral and Maxillofacial Radiology, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima, 770-8504, Japan.ORCID 0009-0000-6856-8813
Naoki MaedaDepartment of Oral and Maxillofacial Radiology, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima, 770-8504, Japan.ORCID 0009-0005-6293-3409
Ryosuke KasaiDepartment of Medical Imaging/Nuclear Medicine, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.ORCID 0000-0002-4699-1642
Tadashi InoueDepartment of Clinical Technology, Division of Radiology, Tokushima University Hospital, Tokushima, Japan.ORCID 0009-0001-3542-1054
Masafumi AmanoDepartment of Clinical Technology, Division of Radiology, Tokushima University Hospital, Tokushima, Japan.ORCID 0009-0002-5059-9085
Yuuri OkuDepartment of Prosthodontics and Oral Rehabilitation, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.ORCID 0009-0003-4381-9403
Keiko FujimotoDepartment of Prosthodontics and Oral Rehabilitation, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.ORCID 0000-0001-6224-7867
Kan NagaoDepartment of Prosthodontics and Oral Rehabilitation, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.ORCID 0000-0003-0856-6239

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesZirconia oral implants produce larger artifacts on computed tomography (CT) compared to titanium oral implants. This study aimed to compare the effectiveness of metal artifact reduction (MAR) software and dual-energy (DE) methods, which are used in multi-detector CT (MDCT) to reduce the artifacts produced by titanium and zirconia oral implants.

methodsOral implants were placed in the lower right second premolar and second molar regions of an acrylic mandible model and evaluated using MDCT. For MAR, Single Energy Metal Artifact Reaction (SEMAR) images were obtained, and for DE, images were obtained at 135 keV. The evaluation was based on 21 regions of interest (ROIs) with sides of 2.8 mm, set at 15, 25, and 35 mm from the center (the lower-right first premolar), with 65°, 90°, 115°, and 145° angles set on the buccal and lingual sides. The evaluation was based on an Artifact Index (AI).

resultsThe lingual aspect of the AI tended to be larger compared to the buccal aspect, regardless of the image-processing method. In addition, the SEMAR method tended to have a greater artifact reduction effect than the DE method. The distortion of the mandibular model and occurrence of new artifacts were confirmed using SEMAR.

conclusionsSEMAR had higher artifact reduction effects on metal artifacts than the DE method. Although SEMAR and dual-energy methods can effectively reduce metal artifacts, they also cause false images and areas that cannot be observed. Therefore, diagnostic and treatment planning, including imaging, is essential before artifact reduction processing.

Indexed as

ArtifactsDental ImplantsMultidetector Computed TomographyTitaniumZirconiumHumansMandibleMetalsDental ImplantsMetalsTitaniumZirconiumzirconium oxideComputed tomographyDual-energyMetal artifact reductionTitanium implantZirconia implant

Identifiers

PMID40038165

What OpenQuestion holds

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Registered trials

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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.