As you already know, dental extractions post-radiation therapy are a risk due to the possibility of developing ORN (osteoradionecrosis) resulting from compromised blood flow to the jaw. If you check my past posts on this topic, you will see that it is a complicated decision. My husband did not get good advice until he consulted a dental surgeon who was part of an oral cancer team. I would not proceed with extractions until seeing a dental surgeon with experience treating oral cancer patients. If at all possible, check with a large cancer center.

I know it's a lot to absorb. The OCF pages under dental issues are helpful and your radiation oncologist should be able to give you some guidance.
All the best,
travelottie