An early memory of mine from growing up in Sweden is when the ‘fluorine lady’ came to my school. Between the 1960s and the 1980s, ‘fluorine lady’ visits were compulsory and involved pupils being instructed in how to take care of their teeth, being told that sweets are bad for you, and so on – before lining up to gargle a shot of fluorine. I recall the fluorine lady picking out my toothbrush for special attention – it had seen better days - to demonstrate to the other kids how you know when it’s time to invest in a new one. She ended her visit with an admonition to my parents whom I should tell, she said, to get me a new toothbrush ASAP.
