White Tongue

Ni

My baby always has a white milk tongue. I know it’s not thrush because it brushes away when I scrub it; however, I can’t reach the back on her tongue. I bought so many different kinds of toothbrushes to try to reach back there but still nothing works. (I’ve even tried the kind that you put on your finger). Anyone else experience this with their baby’s? What do you do- leave it or try to clean as best as you can/often as you can?