Does Extended Breastfeeding Cause Tooth Decay?

My daughter has had four cavities in her four short years of life. How is this possible? I can’t say we’re religious flossers, but the rest of our dental routine is pretty admirable. Regular brushing? Yep. Fluoride tablets? Absolutely. Hard candies? Not allowed.

According to our dentist, my daughter’s tooth decay could have been caused by extended breastfeeding. She pointed out that once solids are introduced, bacteria in the mouth can change and breast milk can actually cause cavities.
extended breastfeeding and cavities
After doing a bit of my own research though, I have to disagree. Repeated studies have shown that breast milk has proteins and antibacterial qualities that prevent tooth decay. My older son was also breastfed until well over two years old and has never had a cavity to this day.
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