Norseth J
Nor Tannlaegeforen Tid. 1977 Sep;87(8):371-6.
To evaluate the occupational hazard in use of mercury by dentists, the work environment and procedures of 22 dentists and their 33 assistants were surveyed. Determinations were made of a) the mercury vapour concentrations in the offices b) the urinary excretion of mercury by the 55 persons concerned c) the mercury concentration in blood. In three of the offices surveyed, mercury vapour concentration exceeded the threshold limit value of 0.05 mg/m3, implying a lack of care in handling mercury. Urinary mercury contents of one dentist and four dental assistants exceeded 0.05 mg/l i.e. the upper "normal" value for a population with no known exposure to mercury. The manner in preparation and handling of the amalgam were considered to be the predominant comtamination factor.
为评估牙医使用汞时的职业危害，对22名牙医及其33名助手的工作环境和操作程序进行了调查。测定了以下各项：a）办公室内汞蒸气浓度；b）55名相关人员的尿汞排泄量；c）血液中的汞浓度。在所调查的三个办公室中，汞蒸气浓度超过了0.05毫克/立方米的阈限值，这意味着在汞处理方面缺乏谨慎。一名牙医和四名牙科助手的尿汞含量超过了0.05毫克/升，即未接触过汞的人群的“正常”上限值。汞合金的制备和处理方式被认为是主要的污染因素。
