well, yes, leaving them can be dangerous if they are impacted, which means they are not going to come in straight and/or they are going to affect other teeth. but, i do not know if that is what they are. the dentist has to determine that by a panorex x-ray. i didn't see all of what you wanted to write because you wrote it all in the subject line and i think it cut some of it off. i would get a 2nd opinion if i were you. if you have amalgams removed, go a dentist who cuts them out, not drills them.