What are these brown/yellow speckles on her teeth?

[Cholcis]

So my 7yo brushes her teeth twice a day using an oral b electric toothbrush. Shes recently had these brownish/yellow speckles appear on her two front teeth and bottom teeth. I always make sure she focuses on getting between the teeth but since she uses an electric toothbrush I thought this would help. What could these spots be? The top teeth are second teeth. Thank you.

Dentist here!
It’s very different to tell from the photo. But if you say they’ve only just appeared, it must be staining.
See you dentist to check

Bring her to the dentist and ask Mumsnet to take down this pic of your child.

looks like tartar

Maybe Dental fluorosis? Have a Google of that. X

.