View in EDS HTML Full Text PDF Full Text

No Increased Mercury Release from Dental Restorations at 1.5T, 3T, or 7T MRI.

Saved in:
Bibliographic Details
Title: No Increased Mercury Release from Dental Restorations at 1.5T, 3T, or 7T MRI.
Authors: Burkett, Brian J.1 (AUTHOR) burkett.brian@mayo.edu, Rasmussen, Chad M.2 (AUTHOR), Fillmore, W. Jonathan3 (AUTHOR), McDonald, Jennifer S.1 (AUTHOR), McDonald, Robert J.1 (AUTHOR), Fagan, Andrew J.1 (AUTHOR), Erdahl, Sarah A.4 (AUTHOR), Eckdahl, Steven J.4 (AUTHOR), Welker, Kirk M.1 (AUTHOR)
Source: Magnetic Resonance in Medicine. Feb2024, Vol. 91 Issue 2, p660-669. 10p.
Subjects: Dental fillings, Dental amalgams, Mercury (Element), Artificial saliva, Magnetic resonance imaging
Abstract: Purpose: Dental amalgam contains mercury and is commonly used in dental restorations. The impact of MRI on mercury excretion from dental amalgam is not well understood across clinical field strengths, especially 7T. We investigated the effects of MRI exposure on mercury excretion using fresh, lab‐created dental amalgam restorations and in extracted teeth with old, pre‐existing restorations. Methods: Donated, unfilled human teeth (n = 120) were restored with amalgam before being stored in saline, artificial saliva, or a dry box prior to MRI scanning. The teeth were placed in individual tubes of fresh artificial saliva and scanned at 1.5T, 3T, or 7T or left unscanned as controls. Mercury concentrations were measured 24–30 h later. Donated teeth with pre‐existing restorations (n = 40) were stored in artificial saliva, scanned at 7T or left unscanned as controls, and mercury concentration tested. Results: For teeth extracted and restored in a laboratory, no significant difference was found (F = 2.42, P = 0.072) between mean mercury concentrations of unscanned teeth (13.72 μg/L) and teeth scanned at 1.5T (10.88 μg/L), 3T (12.65 μg/L), or 7T (8.88 μg/L). For teeth extracted with previously placed restorations, no significant difference (P = 0.288) was found between unscanned controls (4.28 μg/L) and teeth scanned at 7T (6.63 μg/L). Conclusion: MRI of dental amalgam does not significantly increase mercury excretion at 1.5T, 3T, or 7T compared to unscanned teeth. This holds true for controlled laboratory restorations as well as for those placed and lived with prior to extraction and scanning, demonstrating no added risk to the clinical patient or research subject. [ABSTRACT FROM AUTHOR]
Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 173925241
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: No Increased Mercury Release from Dental Restorations at 1.5T, 3T, or 7T MRI.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Burkett%2C+Brian+J%2E%22">Burkett, Brian J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> burkett.brian@mayo.edu</i><br /><searchLink fieldCode="AR" term="%22Rasmussen%2C+Chad+M%2E%22">Rasmussen, Chad M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fillmore%2C+W%2E+Jonathan%22">Fillmore, W. Jonathan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22McDonald%2C+Jennifer+S%2E%22">McDonald, Jennifer S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22McDonald%2C+Robert+J%2E%22">McDonald, Robert J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fagan%2C+Andrew+J%2E%22">Fagan, Andrew J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Erdahl%2C+Sarah+A%2E%22">Erdahl, Sarah A.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eckdahl%2C+Steven+J%2E%22">Eckdahl, Steven J.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Welker%2C+Kirk+M%2E%22">Welker, Kirk M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Magnetic+Resonance+in+Medicine%22">Magnetic Resonance in Medicine</searchLink>. Feb2024, Vol. 91 Issue 2, p660-669. 10p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Dental+fillings%22">Dental fillings</searchLink><br /><searchLink fieldCode="DE" term="%22Dental+amalgams%22">Dental amalgams</searchLink><br /><searchLink fieldCode="DE" term="%22Mercury+%28Element%29%22">Mercury (Element)</searchLink><br /><searchLink fieldCode="DE" term="%22Artificial+saliva%22">Artificial saliva</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+resonance+imaging%22">Magnetic resonance imaging</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose: Dental amalgam contains mercury and is commonly used in dental restorations. The impact of MRI on mercury excretion from dental amalgam is not well understood across clinical field strengths, especially 7T. We investigated the effects of MRI exposure on mercury excretion using fresh, lab‐created dental amalgam restorations and in extracted teeth with old, pre‐existing restorations. Methods: Donated, unfilled human teeth (n = 120) were restored with amalgam before being stored in saline, artificial saliva, or a dry box prior to MRI scanning. The teeth were placed in individual tubes of fresh artificial saliva and scanned at 1.5T, 3T, or 7T or left unscanned as controls. Mercury concentrations were measured 24–30 h later. Donated teeth with pre‐existing restorations (n = 40) were stored in artificial saliva, scanned at 7T or left unscanned as controls, and mercury concentration tested. Results: For teeth extracted and restored in a laboratory, no significant difference was found (F = 2.42, P = 0.072) between mean mercury concentrations of unscanned teeth (13.72 μg/L) and teeth scanned at 1.5T (10.88 μg/L), 3T (12.65 μg/L), or 7T (8.88 μg/L). For teeth extracted with previously placed restorations, no significant difference (P = 0.288) was found between unscanned controls (4.28 μg/L) and teeth scanned at 7T (6.63 μg/L). Conclusion: MRI of dental amalgam does not significantly increase mercury excretion at 1.5T, 3T, or 7T compared to unscanned teeth. This holds true for controlled laboratory restorations as well as for those placed and lived with prior to extraction and scanning, demonstrating no added risk to the clinical patient or research subject. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=173925241
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/mrm.29872
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 660
    Subjects:
      – SubjectFull: Dental fillings
        Type: general
      – SubjectFull: Dental amalgams
        Type: general
      – SubjectFull: Mercury (Element)
        Type: general
      – SubjectFull: Artificial saliva
        Type: general
      – SubjectFull: Magnetic resonance imaging
        Type: general
    Titles:
      – TitleFull: No Increased Mercury Release from Dental Restorations at 1.5T, 3T, or 7T MRI.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Burkett, Brian J.
      – PersonEntity:
          Name:
            NameFull: Rasmussen, Chad M.
      – PersonEntity:
          Name:
            NameFull: Fillmore, W. Jonathan
      – PersonEntity:
          Name:
            NameFull: McDonald, Jennifer S.
      – PersonEntity:
          Name:
            NameFull: McDonald, Robert J.
      – PersonEntity:
          Name:
            NameFull: Fagan, Andrew J.
      – PersonEntity:
          Name:
            NameFull: Erdahl, Sarah A.
      – PersonEntity:
          Name:
            NameFull: Eckdahl, Steven J.
      – PersonEntity:
          Name:
            NameFull: Welker, Kirk M.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 02
              Text: Feb2024
              Type: published
              Y: 2024
          Identifiers:
            – Type: issn-print
              Value: 07403194
          Numbering:
            – Type: volume
              Value: 91
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Magnetic Resonance in Medicine
              Type: main
ResultId 1