fluoride?

Aly • 💞 mama bear to 💜Olivia 1/23/17 and 💙 Charlie 8/21/18

so we had Olivia's 6 month well check today and I was asked twice (once by the nurse and once by the doctor) if we wanted to do fluoride on her two teeth today. I said we'd just wait till her 9 month appt since she'll probably have 2 more teeth by then anyway. but I also had no idea they did this..? we have well water so there's no fluoridated water in this house. I'll have to do some research but I'm wondering what all you mommies think? did you guys even know about it?