I am in the middle of this problem myself. I had SCC of tonsil 4.5 years ago. They didn't suggest anything before treatment, allthough on my own I went to my dentist and had everything fixed. My teeth were in perfect condition before treatment. After tx was done, my teeth started falling apart. I went to a couple dentists, oral surgeon and prosthodontist. I was told I couldn't have them pulled at first. Then was told that maybe I could if I had Hyperbaric Oxygen Treatments done before and after the extractions. The fear is getting Osteoradionecrosis. So after seeing all the specialists, and talking to my Oral surgeon, I determined that I couldn't have the HBO treatments due to cost. 48K and insurance wont cover.
I started having them pulled at the Oral Surgery dept at Vanderbilt, they pulled a couple to test and be sure I would heal, I did. Then 4 more, then 8, I have 8 more to go and I am healing.
I looked all over myself for help. I received some help from the American Cancer Society through a patient navigator. Call them and get a file started on him, the ACS will start contacting organizations that they have access to looking for help for you. Also, check with the social worker at your hospital, they often have programs to help in unusual situations. I also contacted a few orthodontist, in the area that would be qualified to do this type of work. You don't want just a normal dentist. Click on the Resources link at the top of any page, and click on the American Cancer Society to access them.
I wish you luck, and keep me posted on what you find.