银汞合金为口腔科常用的充填材料,对于汞的毒性已为公众所重视。但对其可能引起的过敏性口炎并未引起应有的注意,常易与其它口腔粘膜病相混,而被误诊。28年来,我们共医治5例银汞合金充填后所致的迟发型过敏性口炎的病例。报告如下。一、病例介绍(见附表)二、讨论1969年Djerassi等为了证实银汞能否致敏,在180名有银汞修复物的病人前臂内侧,作银汞作皮肤斑贴试验,29人为阳性(16.10％)。60名无银汞充 Silver amalgam is a commonly used filling material in dentistry, and the toxicity to mercury has been paid more attention to by the public. However, it may cause allergic stomatitis did not cause due attention, often easy to be mixed with other oral mucosal diseases, and was misdiagnosed. For 28 years, we treated a total of 5 cases of late-onset allergic stomatitis caused by amalgam filling. The report is as follows. First, the case introduction (see the table) Second, to discuss Djerassi in 1969, etc. In order to confirm whether silver-mercury sensitization, in the inner side of the forearm of 180 patients with amalgam restoration, silver-mercury for skin patch test, 29 were positive (16.10%). 60 silver-free mercury charge