ArticleImaging science in dentistry2020
Magnitude of beam-hardening artifacts produced by gutta-percha and metal posts on cone-beam computed tomography with varying tube current.
Article in Imaging science in dentistry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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.
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.
Who cites it
31 citing papers in PubMed, 48 citations in OpenAlex.
- Accuracy of static-guided endodontics for access cavity preparation with pulp canal obliteration: a randomized controlled clinical trial.BMC oral health · 2025Trial
- Photon-Counting Detector CT-Based Virtual Monoenergetic Imaging With Metal Artifact Reduction for Endodontic Diagnostics.International dental journal · 2026Article
- Photon-counting detector vs. cone-beam CT in endodontics: a study of simulated endodontic conditions, treatments, and associated complications.BMC oral health · 2026Article
- Article
- Effect of Phantom Containing Implants Angulation on the Amount of Metal Artifacts Around the Implants in CBCT Images.International journal of dentistry · 2026Article
- Ex Vivo Quantitative Evaluation of Beam Hardening Artifacts at Various Implant Locations in Cone-Beam Computed Tomography Using Metal Artifact Reduction and Noise Reduction Techniques.Diagnostics (Basel, Switzerland) · 2025Article
- Impact of imaging protocol and tube current adjustment on the radiation dose in CBCT imaging of mandibular incisors.Clinical oral investigations · 2025Article
- Gray values and noise behavior of cone-beam computed tomography machines-an in vitro study.Dento maxillo facial radiology · 2025Article
- cBrazilian dental journal · 2025Article
- Expression of beam hardening artifacts on horizontally stitched cone-beam computed tomography images.Imaging science in dentistry · 2024Article
- Combination of metal artifact reduction and sharpening filter application for horizontal root fracture diagnosis in teeth adjacent to a zirconia implant.Imaging science in dentistry · 2024Article
- Expression of artefacts from different orthodontic brackets and wires in cone beam computed tomography scans-an in vitro study.Clinical oral investigations · 2024Article
- Influence of tube current and metal artifact reduction on the diagnosis of external cervical resorption in teeth adjacent to a dental implant in CBCT: an ex-vivo study.Clinical oral investigations · 2024Article
- Vertical root fracture diagnosis in teeth with metallic posts: Impact of metal artifact reduction and sharpening filters.Imaging science in dentistry · 2024Article
- Filtered back projection vs. iterative reconstruction for CBCT: effects on image noise and processing time.Dento maxillo facial radiology · 2023Article
- Does the shape of the field-of-view influence the magnitude of artefacts from high-density materials in cone-beam computed tomography?Dento maxillo facial radiology · 2023Article
- The effects of different metal posts, cements, and exposure parameters on cone-beam computed tomography artifacts.Imaging science in dentistry · 2023Article
- Feasibility of photon-counting computed tomography as a novel imaging modality for challenging endodontic diagnostic tasks.Scientific reports · 2023Article
- Efficacy of low-dose cone beam computed tomography and metal artifact reduction tool for assessment of peri-implant bone defects: an in vitro study.BMC oral health · 2022Article
- Does the size of an object containing dental implant affect the expression of artifacts in cone beam computed tomography imaging?Head & face medicine · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis study was performed to evaluate the magnitude of artifacts produced by gutta-percha and metal posts on cone-beam computed tomography (CBCT) scans obtained with different tube currents and with or without metal artifact reduction (MAR). MATERIALS AND
methodsA tooth was inserted in a dry human mandible socket, and CBCT scans were acquired after root canal instrumentation, root canal filling, and metal post placement with various tube currents with and without MAR activation. The artifact magnitude was assessed by the standard deviation (SD) of gray values and the contrast-to-noise ratio (CNR) at the various distances from the tooth. Data were compared using multi-way analysis of variance.
resultsAt all distances, a current of 4 mA was associated with a higher SD and a lower CNR than 8 mA or 10 mA (
conclusionIncreasing the tube current from 4 mA to 8 mA may reduce the magnitude of artifacts from metal posts. The magnitude of artifacts arising from metal posts was significantly higher at distances of 1.5 cm or less than at greater distances. MAR usage improved image quality near the metal post, but had no significant influence farther than 1.5 cm from the tooth.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.