Radiology:MRI检查会让你的银汞合金牙齿填充物释放汞成分吗?

2018-11-15 shaosai MedSci原创

本研究旨在体外评价7.0T和1.5T MRI检查后银汞合金汞释放的价值。

本研究旨在体外评价7.0T和1.5T MRI检查后银汞合金汞释放的价值。

本研究共评价了60个具有临床指征拔除的无龋臼齿或前臼齿。在每个牙齿两侧进行开洞并填入银汞合金。9天后,20个随机选择的2组牙齿在行MRI扫描后20分钟内置入20 mL人工唾液中。24小时后,从唾液中取出,利用电感耦合等离子体质谱法评价唾液腺中汞含量。利用当茶分析比较3组牙齿平均汞含量,采用Tukey检验进行平均汞含量多重比较。

结果为,在7.0T、1.5T和对照组中,人工唾液中平均汞含量分别为673 μg/L ± 179 、172 μg/L ± 60、141 μg/L ± 152。7.0T人工唾液中平均汞含量要明显高于1.5T(P < .001; 95%CI: 368 μg/L, 633 μg/L)和对照组(P < .001; 95% CI: 416 μg/L, 648 μg/L)。而在1.5T和对照组中,平均汞含量无统计学差异(P = .84; 95%CI: -164 μg/L, 110 μg/L)。

本研究表明在体外研究中,7.0T MRI检查会引起银汞合金植入物释放汞离子,而1.5T扫描中并无该种情况。

原始出处:

Yilmaz S, Adisen MZ, Ota T. et al.Ex Vivo Mercury Release from Dental Amalgam after 7.0-T and 1.5-T MRI.Radiology.DOI:10.1148/radiol.2018172597

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    2018-11-17 zhouqu_8
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    2018-11-17 楚秀娟

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