My friend has just told me & is very upset.
Her DS's has one discoloured tooth & apparently on the other tooth (or behind it) is an abecess.
I would have thought it was better to leave them for when the front teeth come through ?
Not a dentit though - so hopefully some experts can advise & my friend is very upset & doesn't know what to do.
I don't think she knows what has caused it (am thinking anti-biotics? I am sure she is very good with teeth cleaning)