We are on well water and use reverse osmosis for our drinking water so it is not fluoridated and DD brushes with a non fluoride toothpaste. Our pedi practices integrative medicine so prefers natural treatments if available and I trust him. He prescribed a fluoride supplement for B at half the standard dosage since she's not getting any. Our dentist said she needs at least a little too. But MIL is all "fluoride causes cancer!" MIL is anti vax and anti anything non organic or not made by the Amish (she's a retired nurse FFS?!?). DH knows she's BSC but is kinda listening to her on this for some reason. I'm going ahead with it anyway (when I remember) but wondered if any of you are supplementing?
FTR, B is fully vaxed and doing fine so far.
Re: Fluoride?
The risk of too much fluoride, is that it can cause fluorosis, which is permanent teeth damage.
We have fluoride in our water, so we don't use toothpaste with fluoride, or a supplement.