2020
DOI: 10.5624/isd.2020.50.1.1
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Magnitude of beam-hardening artifacts produced by gutta-percha and metal posts on cone-beam computed tomography with varying tube current

Abstract: Purpose: This 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 Methods: A 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 magnitud… Show more

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Cited by 37 publications
(26 citation statements)
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“…Technical causes of artifacts, such as electrical and phantom noise, scatter, beam hardening, and the exponential edge-gradient effect, as well as artifacts caused by the materials used for dental restorations, are known problems that must be taken into account. 11,[32][33][34] This study presents an analysis of the direct correlation of different patterns of patient motion on image quality in CBCT scans of the oral and maxillofacial region in a large cohort of patients, and the results of similar studies could be validated. Although significant technical advances have been made in recent years in implementing motion artifact correction tools, other studies are warranted to further reduce the need for re-exposure and to improve interpretability, thereby possibly enhancing operational areas for CBCT imaging.…”
Section: Discussionmentioning
confidence: 99%
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“…Technical causes of artifacts, such as electrical and phantom noise, scatter, beam hardening, and the exponential edge-gradient effect, as well as artifacts caused by the materials used for dental restorations, are known problems that must be taken into account. 11,[32][33][34] This study presents an analysis of the direct correlation of different patterns of patient motion on image quality in CBCT scans of the oral and maxillofacial region in a large cohort of patients, and the results of similar studies could be validated. Although significant technical advances have been made in recent years in implementing motion artifact correction tools, other studies are warranted to further reduce the need for re-exposure and to improve interpretability, thereby possibly enhancing operational areas for CBCT imaging.…”
Section: Discussionmentioning
confidence: 99%
“…Technical causes of artifacts, such as electrical and phantom noise, scatter, beam hardening, and the exponential edge-gradient effect, as well as artifacts caused by the materials used for dental restorations, are known problems that must be taken into account. 11 32 33 34 …”
Section: Discussionmentioning
confidence: 99%
“…2018, Gaêta‐Araujo et al . 2020). Furthermore, although beam‐hardening dark streaks might mimic some pathological conditions (e.g.…”
Section: Discussionmentioning
confidence: 99%
“…2018, Gaêta‐Araujo et al . 2020). Thus, different metal alloys or different dental materials, such as dental implants, could create different results.…”
Section: Discussionmentioning
confidence: 99%
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