I have never heard of face collapse with having a root of a tooth taken out. I know there are all kinds of bone graphs that can be used. I hope Bryanna will address your concerns over this. Having that tooth out, will get rid of the infection. You don't want to be sick over this like you have been.
Oral surgeons, work. Also there is a kind of doctor that works with the face and jaw. Forgot what kind of doc. they are called. Bryanna would be the one who would know what kind of special doctor you may need. I am sorry you are going through all this too. I still can't believe they left part of that tool in your tooth. A bit careless I would say, as usually there are xrays taken after a proceedure to check on what they did. Be good to yourself. ginnie