P.S. and it's right to ask "what's in the mouth (maybe on the tongue)", and not what's on the teeth, because on the teeth there can be plaque, caries, etc.!(thanks to advertising, it enlightens me!)))
P.S. and it's right to ask "what's in the mouth (maybe on the tongue)", and not what's on the teeth, because on the teeth there can be plaque, caries, etc.!(thanks to advertising, it enlightens me!)))