Newmother: sounds like we have the same problem. You can read my post and some answers here:
I am also worried about my sons teeth. The exposed tooth surface under enamel became dark, and the teeth are rubbed off some almost to the gum.
But this only happening with the upper teeth, the lower teeth look pretty normal, which confuses me most.
I am not sure what caused it, but these upper teeth were very soft from the moment they appeared, like nails, ulike the lower teeth.
Dentists here suggested pulling all 6 of them at once under full anastesia. I think it is too much and believe it is better for future teeth that these, bad or good, hold the place. Also that my son could chew normally these years before new teeth come.
I would really like to get some response from those who had similar problem. How will it be with the new teeth? Would they be as bad?