Exhaled mercury following removal and insertion of amalgam restorations.
Exhaled mercury following removal and insertion of amalgam restorations.
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移除和插入汞合金修复体后呼出的汞。
DOI：
10.1016/0022-3913(83)90391-8
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
Gay,DD
中科院分区：
文献类型：
--
作者：
Reinhardt,JW;Boyer,DB;Svare,CW;Frank,CW;Cox,RD;Gay,DD
牙科汞合金和修复程序中的汞暴露对患者的影响不如牙科人员的汞暴露那么广泛。一个.一项研究发现，在一组114名没有接受牙科治疗的成年人中，只有6人的尿液中含有可测量的汞，其中一人正在使用汞利尿剂。这与目前正在接受牙科治疗的24人进行了比较。其中5人在治疗前后的尿液中显示出汞。讨论了汞合金以外的汞源（如含汞防腐剂和杀菌剂）吸收汞的可能性。这项研究的结论是，牙科汞合金似乎并不是汞吸收和排泄的重要来源。在另一项研究中，Frykholm 2使用放射性汞同位素在5名患者中的每名患者体内放置4或5个汞合金。放射性汞的尿排泄量逐渐增加，并在治疗后第5天达到平均峰值2.5 pg/L。在每一种情况下，到第七天或第八天，水平下降到零，此时放射性汞合金被移除，以避免进一步暴露。在移除后的第二天，尿液中的汞含量上升到5皮克/升，然后在两天内下降到零。一些研究者发现尿中汞的排泄是非常不规则的，因此测量吸收量是不可靠的。暴露后，早期有一个快速的尿排泄阶段，随后是一个较慢的阶段，
P atient exposure to mercury from dental amalgam and restorative procedures has not been studied as extensively as mercury exposure to dental personnel. One. study found that in a group of 114 adults not undergoing dental treatment, only six had measurable mercury in the urine, and one of those persons was using a mercurial diuretic.’This was compared to a group of 24 persons currently undergoing dental treatment. Of that group five showed mercury in the urine before and after treatment. The possibility of mercury absorption from sources other than dental amalgam, such as mercurial antiseptics and germicides, was discussed. The study concluded that dental amalgams do not appear to be an important source of mercury absorption and excretion.In another study Frykholm2 used a radioisotope of mercury in placing four or five amalgam restorations in each of five patients. The urinary excretion of radioactive mercury gradually increased for each individual and reached an average peak of 2.5 pg/liter on the fifth day following treatment. In each case the level then dropped to zero by the seventh or eighth day, at which time the radioactive amalgams were removed to avoid further exposure. On the day following removal, urinary levels of mercury rose to 5 pg/liter and then dropped to zero in 2 days. Some investigators have found urinary excretion of mercury to be quite irregular and therefore an unreliable measure of quantity absorbed. Following exposure there is an early rapid phase of urinary excretion followed by a slower phase that may account for more