Brown spot on teeth

I am at this moment having couch time with Ella and I was checking.out her teeth which look great other than two of her top teeth, one on each side with a brown spot near her gum.
I tried scraping them off and nothing.
Surely isn't decay this young and her teeth looking clean and healthy.
Anyone else seen this?
I tried scraping them off and nothing.
Surely isn't decay this young and her teeth looking clean and healthy.
Anyone else seen this?
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