There was a tragic accident in Japan back in 1982: A dentist mistakenly applied HF solution instead of fluorides to a girl, who subsequently suffered extreme pa

There was a tragic accident in Japan back in 1982: A dentist mistakenly applied HF solution instead of fluorides to a girl, who subsequently suffered extreme pain and died. Both materials are called フッ素 (fusso, which is actually the name of Fluorine), and there was a fatal miscommunication between dentist's assistant and the distributor. The dentist felt so guilty and stressed out that he died from stroke at the girl's funeral. For Japanese in my generation, the fear of HF was imprinted by the accident. I couldn't find English reference, but here's Japanese wikipedia page: https://ja.wikipedia.org/wiki/%E5%85%AB%E7%8E%8B%E5%AD%90%E5%B8%82%E6%AD%AF%E7%A7%91%E5%8C%BB%E5%B8%AB%E3%83%95%E3%83%83%E5%8C%96%E6%B0%B4%E7%B4%A0%E9%85%B8%E8%AA%A4%E5%A1%97%E5%B8%83%E4%BA%8B%E6%95%85 https://ja.wikipedia.org/wiki/%E5%85%AB%E7%8E%8B%E5%AD%90%E5...