Effect of 14.1T MRI on Mercury & Amalgam: A Study by ICP-MS and XRD

Year 2023, Volume: 5 Issue: 3, 158 - 166, 27.12.2023

Samed Şatır , Selmi Yılmaz

https://doi.org/10.51122/neudentj.2023.72

Abstract

Aim: The aim of this study was to evaluate the effect of electromagnetic effects of magnetic resonance imaging (MRI) on the release of mercury (Hg) and on the possible amalgam phase change in amalgam with 14.1T MRI.
Material and methods: 60 amalgam discs with 4 mm diameter and 4 mm height were prepared. 30 were selected as the control and 30 as MRI group. They were placed in the Fusayama-Meyer solution. MRI group were exposed to 14.1T ultra-high-field magnetic resonance imaging (UHF-MRI) system (EPFL, Lausanne, Switzerland). 2, 12 and 24 hours after MRI, all discs were removed from the solutions. Inductively coupled plasma-mass spectroscopy (ICP-MS) analysis was performed to the solutions. X-ray diffractometry (XRD) was performed to amalgam discs. Differences and interactions between groups were evaluated by two-way ANOVA.
Results: The concentration of Hg released from the amalgams to the solution in the MRI group was significantly higher than the control group (p=0,026; F=5,253). The peak intensity of the amalgam in the MRI group obtained by XRD was significantly lower than the control group (p = 0.000).
Conclusion: UHF-MRI increases the release of Hg in the amalgam due to the strength of the magnetic field and appears to have a debilitating effect on the crystal structure of the amalgam within the period of exposure to the magnetic field.

Keywords

Amalgam, Magnetic Resonance Imaging, Inductively coupled plasma-mass spectroscopy, Mercury, X-ray diffractometry

Supporting Institution

AKDENİZ ÜNİVERSİTESİ BİLİMSEL ARAŞTIRMA PROJELERİ KOORDİNATÖRLÜĞÜ

Project Number

TDH-2018-3157

Thanks

Thanks to Deniz Ozel Erkan for the support of professional statistical analysis. Thanks to Ting Yin and Ozlem Ipek for their support in the UHF-MRI application.

14.1T MRG'nin Cıva ve Amalgama Etkisi: ICP-MS ve XRD Çalışması

Abstract

Amaç: Bu çalışmanın amacı, Manyetik Rezonans Görüntülemenin (MRG) elektromanyetik etkilerinin cıva (Hg) salınımı ve olası amalgam faz değişimi üzerindeki etkisini 14.1T MRG ile değerlendirmektir.
Gereç ve Yöntemler: 4 mm çapında ve 4 mm yüksekliğinde 60 adet amalgam disk hazırlandı. 30'u kontrol ve 30'u MRG grubu olarak seçildi. Diskler Fusayama-Meyer solüsyonuna yerleştirildi. MRG grubu 14.1T Ultra Yüksek Alanlı Manyetik Rezonans Görüntüleme (UYA-MRG) sistemine (EPFL, Lozan, İsviçre) maruz bırakıldı. MRG'den 2, 12 ve 24 saat sonra tüm diskler solüsyonlardan çıkarıldı. Solüsyonlara İndüktif eşleşmiş plazma-kütle spektroskopisi (ICP-MS) analizi yapıldı. Amalgam disklere X-ışını difraktometresi (XRD) uygulandı. Gruplar arasındaki farklılıklar ve etkileşimler çift yönlü ANOVA ile değerlendirildi.
Bulgular: MRG grubunda amalgamlardan solüsyona salınan Hg konsantrasyonu kontrol grubuna göre anlamlı derecede yüksekti (p=0,026; F=5,253). XRD ile elde edilen MRG grubundaki amalgamın pik seviyesi kontrol grubuna göre anlamlı derecede düşüktü (p=0.000).
Sonuç: UYA-MRG, manyetik alanın gücünden dolayı amalgamdaki Hg salınımını arttırmaktadır ve manyetik alana maruz kalma süresi içinde amalgamın kristal yapısı üzerinde zayıflatıcı bir etkiye sahip olduğu görülmektedir.

Keywords

Amalgam, Manyetik Rezonans Görüntüleme, İndüktif eşleşmiş plazma-kütle spektroskopisi, Cıva, X-ışını difraktometresi

Project Number

TDH-2018-3157

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