Welcome to OCF. You will find the support you need here to help make some difficult decisions. Before any treatment starts your mother will see many doctors. It is very important to ask questions if you do not understand what the doctor is saying. Dont try to get by with reading body language, ask for clarity.

First about the teeth. If teeth are questionable and the dentist or oral surgeon doesnt think they will make it thru radiation treatments, then its best to take them out before any treatment. Radiation can do a number on teeth.

Your mother should be seen at a cancer center. I do understand the doctor asking for your decisions about weather she will do chemo and radiation. Oral cancer can be very agressive. If at all possible treatments should not be delayed. While, at the same time, you must make informed decisions that will have the best outcome for your mother. A second or third opinion is always a good idea.

Best of luck with everything.