Q. Half of my back molar fell out so I’ve had two fillings which have fell out. Last time I visited my dentist gave me a replacement filling and some antibiotics for an abscess on the same tooth. The abscess still hasn’t gone so I think I’l have to get it taken out now which I’m very worried about, I don’t want to forever have a gap in my mouth and I also read that having a gap from a missing tooth will cause your other teeth to move and may fall out aswell. I’m 16 and really worried about it. Is there anything I can have done to replace the tooth?,