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the claim

Fixed metal dental retainers are not affected by MRI magnetic fields

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 5 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that fixed metal dental retainers are not affected by MRI magnetic fields?

No. Evidence shows that fixed metal dental retainers are indeed affected by MRI magnetic fields, primarily by producing magnetic susceptibility artifacts that can distort imaging and reduce diagnostic quality.

Verdict: REFUTED · 0 sources for, 5 against · Last checked

The analysis

The claim states that fixed metal dental retainers are not affected by MRI magnetic fields. However, multiple literature reviews, in vitro, and in vivo studies (e.g., papers [0], [1], [6], [7], and [8]) clearly demonstrate that metal orthodontic retainers interact with MRI magnetic fields, resulting in mechanical displacement, heating concerns, and significant image artifacts. Therefore, the claim is refuted by the available evidence.

Evidence against · 5
Unwanted effects due to interactions between dental materials and magnetic resonance imaging: a review of the literature.
2018
This review highlights that dental materials with magnetic properties, including orthodontic appliances, interact unfavorably with the magnetic fields and radiofrequency pulses of MRIs, causing mechanical displacement, heat generation, and artifacts.
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SJ, C., DB, S., & S, T. (2018). Unwanted effects due to interactions between dental materials and magnetic resonance imaging: a review of the literature.. doi.org. https://doi.org/10.5395/rde.2018.43.e39

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More against · 4
Evaluation of magnetic resonance imaging artifacts caused by fixed orthodontic CAD/CAM retainers—an in vitro study
2020
This in vitro study demonstrates that fixed orthodontic retainers create significant MRI image artifacts due to interactions with the magnetic field.
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Roser, C. J., Hilgenfeld, T., Şen, S., Badrow, T., Zingler, S., Heiland, S., Bendszus, M., Lux, C., & Juerchott, A. (2020). Evaluation of magnetic resonance imaging artifacts caused by fixed orthodontic CAD/CAM retainers—an in vitro study. doi.org. https://doi.org/10.1007/s00784-020-03450-x

Orthodontic appliances and MR image artefacts: An exploratory in vitro and in vivo study using 1.5-T and 3-T scanners.
2021
This study evaluates fixed orthodontic retainers and notes that they cause notable artifacts in magnetic resonance imaging depending on their material composition.
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M, S., M, S., F, A., S, M., S, A., L, B., & K, H. (2021). Orthodontic appliances and MR image artefacts: An exploratory in vitro and in vivo study using 1.5-T and 3-T scanners.. doi.org. https://doi.org/10.5624/isd.20200199

Diagnostic compatibility of various fixed orthodontic retainers for head/neck MRI and dental MRI
2023
This evaluation of fixed orthodontic retainers shows that metal retainers, particularly steel variants, interact with 3-T MRI magnetic fields to produce substantial artifact volumes that impair diagnostic quality.
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Juerchott, A., Roser, C. J., Saleem, M. A., Nittka, M., Lux, C., Heiland, S., Bendszus, M., & Hilgenfeld, T. (2023). Diagnostic compatibility of various fixed orthodontic retainers for head/neck MRI and dental MRI. doi.org. https://doi.org/10.1007/s00784-023-04861-2

MRI compatibility of orthodontic brackets and wires: systematic review article.
2022
This systematic review indicates that fixed orthodontic devices interact with MRI fields to produce clinically relevant susceptibility artifacts in the orofacial region.
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A, D., F, D., T, V., P, B., F, J., & C, D. (2022). MRI compatibility of orthodontic brackets and wires: systematic review article.. doi.org. https://doi.org/10.1186/s12903-022-02317-9

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Receipt History
first checked04 Aug 2026
judged → REFUTED · 1004 Aug 2026
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