铅及铅化合物在工业生产中用途广、用量大,中毒大都是在持续接触下出现的,因此慢性中毒较多见。其发病率以铅矿开采和冶炼为最高,其次是蓄电池工业,再次是印刷业,长期服用含铅偏方而致中毒者亦偶有所见。口腔牙龈铅线铅斑是这类中毒常见的前驱症状。1980年上半年我科对××蓄电池厂等156名铅作业工人进行了口腔检查及牙龈铅线铅斑调查,现将结果报告如下: 检查标准铅线铅斑:主要依靠视诊。铅线为距龈缘1厘米处、沿龈乳头迂回的、宽1毫米左右的淡紫色或石板色狭线条。铅斑指牙龈上灰白色斑块。 Lead and lead compounds are widely used in industrial production, large amount, poisoning mostly appear under continuous contact, so chronic poisoning is more common. The incidence of lead mining and smelting is the highest, followed by the battery industry, printing industry is again, long-term use of lead-containing poisoning were also occasionally seen. Lead gingival lead plumb line is a common precursor of such poisoning symptoms. In the first half of 1980, our department performed oral examinations and lead gingival plumb line investigations on 156 lead workers such as ×× Battery Factory. The results are reported as follows: Check the standard Lead lead spot: mainly rely on the diagnosis. Lead line from the gingival margin 1 cm, along the gingiva nipple circuitous, about 1 mm wide lavender or slate colored strips. Lead spots gums on the gray patches.